The present disclosure discloses a method for preparing a tensile specimen and a vibration curing device. The method includes obtaining a colloid mixture and putting it into a beaker and using a stirring device to stir the colloid mixture mixed evenly. The method further includes putting the colloid mixture into a vacuum dryer, and spraying a release agent on cleaned tensile specimen mold, and using a needle to inject the colloid mixture into a molding groove of the tensile specimen mold and filling the molding groove, fixing the pressing plate and the tensile specimen mold together to form a whole mold, fixing it on a vibration platform of a vibration device, turning on the vibration device to vibrate the whole mold and to heat the whole mold to a predetermined temperature, cooling the whole mold, and demolding the whole mold to obtain the tensile specimen of the structural adhesive.
B29C 45/56 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule utilisant des éléments de moules mobiles pendant ou après l'injection, p. ex. pour le moulage par injection-pressage
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
B29C 45/73 - Chauffage ou refroidissement du moule
B29K 63/00 - Utilisation de résines époxy comme matière de moulage
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
2.
Prefabricated movable and adjustable support frame for construction crossing over existing line, and method of installing same
Provided is a prefabricated movable and adjustable support frame for construction crossing over an existing line, and a method of installing the same used in field of railway construction engineering, the support frame including a rail track of the existing line, an adjustable support, a slideway stringer, a support beam, a hinge, a brake device, and a traction mechanism, where the adjustable support includes 4 pillar assemblies, each of the pillar assemblies includes an outer column and an inner column, the inner column is inserted into the outer column, a lower end of the outer column is connected to a lower rail wheel, an upper end of the inner column is connected to an upper pulley, the inner columns adjacent to each other and the outer columns adjacent to each other along the rail track of the existing line are connected by hinged nodes through a cross brace assembly.
Disclosed are an iron-based alloy strengthened by an intermetallic compound (IMC) phase-coated nano-rare earth oxide phase and a preparation method thereof. The preparation method includes the following steps: step S1, preparation of a pre-alloyed powder; step S2, first mechanical alloying; step S3, mixing by ball milling; step S4, second mechanical alloying; step S5, thermomechanical densification; and step S6, solid solution heat treatment and aging heat treatment.
The disclosure discloses a polycrystalline diamond composite sheet having a continuous gradient transition layer and a 3D printing preparation method thereof. The polycrystalline diamond composite sheet consists of a polycrystalline diamond layer, a continuous gradient transition layer, and a cemented carbide substrate from top to bottom, in which the continuous gradient transition layer consists of diamond and cemented carbide. Along a direction from the cemented carbide substrate to the polycrystalline diamond layer, a content of the cemented carbide in the continuous gradient transition layer decreases from 100% to 0, and a content of the diamond increases from 0 to 100%. By designing and combining the continuous gradient transition layer with 3D printing technology, the disclosure realizes a continuous change in the two materials of diamond and cemented carbide, thereby eliminating the sudden change interface of the materials inside the diamond composite sheet.
B22F 7/02 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de couches successives
B22F 10/32 - Commande ou régulation des opérations de l’atmosphère, p. ex. de la composition ou de la pression dans une chambre de fabrication
5.
SURGICAL NAVIGATION SYSTEM BASED ON VISUAL ANALYSIS
Disclosed is a surgical navigation system based on visual analysis, which comprises an image acquisition module, a data preprocessing module, a data classification module, a registration module, a three-dimensional reconstruction module, and a tracking feedback module. The present invention belongs to the technical field of surgical navigation, relates in particular to a surgical navigation system based on visual analysis, and aims to solve the technical problems of poor quality of an image provided by a three-dimensional model constructed by a medical image in a single mode and a provided angle of view being singular and unable to fully reflect the position of a lesion. According to the present solution, adaptive non-local mean filtering denoising processing is carried out on images, and a multi-modal medical image is acquired for constructing a model having different angles of view and physical information. Meanwhile, according to the present solution, a coarse-to-fine medical registration method which combines a progressive image and a speeded-up robust feature algorithm is used, so that the precision of registration is improved.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
6.
METHOD, SYSTEM AND DEVICE FOR PERFORMING INTESTINAL POLYP CONTOUR SEGMENTATION ON BASIS OF ADAPTIVE THRESHOLD
Disclosed in the present invention are a method, system and device for performing intestinal polyp contour segmentation on the basis of an adaptive threshold. The present method comprises: acquiring an intestinal polyp image to be segmented, and removing highlight points and additional information from said intestinal polyp image, so as to obtain a first intestinal polyp image; increasing the image contrast of the first intestinal polyp image, so as to obtain a second intestinal polyp image; performing segmentation on the second intestinal polyp image by means of using an adaptive threshold algorithm, so as to obtain a main contour image; removing noise spots from the main contour image, so as to obtain a denoised image; performing local detail processing on the denoised image, so as to obtain a processed denoised image; extracting an intestinal polyp contour from the processed denoised image, and performing curve fitting on the intestinal polyp contour, so as to obtain a complete intestinal polyp contour; and performing intestinal polyp contour segmentation on the basis of the complete intestinal polyp contour. The present invention can improve the accuracy of intestinal polyp contour segmentation.
A surgical navigation positioning system and method. The system comprises a data acquisition module, a data preprocessing module, a model reconstruction module, a coordinate registration module, an information restoration module, and a positioning tracking module. The method comprises acquiring an original patient image, a patient CT image, and real-time video data, carrying out data preprocessing and optimized registration by means of a guided image filtering denoising algorithm, implementing model reconstruction by means of a ray casting algorithm, and using an adversarial training method to implement information restoration of an occluded image, thus increasing the precision, accuracy, and safety of surgical navigation positioning.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G06T 7/246 - Analyse du mouvement utilisant des procédés basés sur les caractéristiques, p. ex. le suivi des coins ou des segments
The present invention relates to the technical field of automatic localization in medical images, and specifically to a method for automatic localization in a medical image based on deep learning. The method comprises the following steps: establishing a digital analysis model, collecting a large amount of medical image data, and performing integrity evaluation and screening on the collected medical image data; and on the basis of the result of screening of medical image information. According to the present invention, by means of the powerful feature extraction and generalization capabilities of a deep learning network, a specific area in a medical image can be automatically and accurately localized, avoiding the interference of errors and improving the accuracy of localization, by automatically localizing the specific area, the efficiency of medical diagnosis is improved, the deep learning network has strong adaptability and can process different types of medical images, unknown image information can also be fed back, and feedback data is collected and inputted into the model for system update, enabling the present invention to have a learning ability, thereby achieving both universality and flexibility.
The present disclosure provides a holographic electromagnetic exploration method based on full-area observation alternating coverage integral-difference mixed stimulus, including: S1: determining an area to be explored and a core target area of the area to be explored; S2: dividing the area to be explored into a plurality of basic array areas, dividing the core target area into a plurality of staggered array areas, and determining a plurality of mixed stimulus system arrangement positions within the area to be explored; S3: arranging a basic observation array composed of receiving stations in each basic array area successively; and S4: arranging a staggered observation array composed of receiving stations in each staggered array area successively.
G01V 3/08 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
G03H 1/08 - Procédés ou appareils pour produire des hologrammes pour faire des hologrammes synthétiques
10.
UWB-TECHNOLOGY-BASED SURGICAL POSITIONING METHOD, SYSTEM AND DEVICE, AND MEDIUM
Disclosed in the present invention are a UWB-technology-based surgical positioning method, system and device, and a medium. The method comprises: establishing a human body electromagnetic simulation model, and using UWB technology to provide a signal which is propagated within a human body in the human body electromagnetic simulation model, so as to establish a channel model; constructing a path loss model for calculating a path loss in the channel model; on the basis of a signal reception principle, constructing a mathematical model which includes a received power and a path loss; after a first path loss is calculated by means of the path loss model, calculating a received power on the basis of the mathematical model; at the minimum received power, calculating a second path loss on the basis of the mathematical model; calculating a communication distance on the basis of the second path loss, a free-space path loss model, and environmental parameters which include a shadow loss; and on the basis of the communication distance, using a trilateration positioning method to perform surgical positioning on a target to be measured. The present invention can improve the accuracy of surgical positioning, thereby avoiding causing additional harm to patients.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 34/00 - Chirurgie assistée par ordinateurManipulateurs ou robots spécialement adaptés à l’utilisation en chirurgie
H04B 17/391 - Modélisation du canal de propagation
G01S 1/00 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteurs de radiophareRécepteurs travaillant avec ces systèmes
H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal
H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
11.
POLYCRYSTALLINE CUBIC BORON NITRIDE COMPOSITE SHEET HAVING CONTINUOUS GRADIENT STRUCTURE AND PREPARATION METHOD THEREOF
The disclosure discloses a polycrystalline cubic boron nitride composite sheet having a continuous gradient structure and a preparation method thereof. The polycrystalline cubic boron nitride composite sheet consists of a cemented carbide substrate, a continuous gradient layer, and a CBN layer from bottom to top. The continuous gradient layer contains cemented carbide and CBN, a content of CBN increases in continuous gradient from bottom to top, while a content of the cemented carbide decreases in continuous gradient from bottom to top. A volume fraction D of CBN and a volume fraction M of cemented carbide in the continuous gradient layer both satisfy exponential gradient functions. At the same time, the disclosure uses direct ink writing 3D printing technology with slurry to realize the preparation of the polycrystalline cubic boron nitride composite sheet having the continuous gradient structure.
C04B 35/5831 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures à base de nitrure de bore à base de nitrure de bore cubique
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
Introduced are a method, a software apparatus, an electronic device, and a storage medium for simulating inerter using finite element analysis. The method involves: acquiring structural parameters of an inerter; simulating the mechanical properties of racks on rigid rods and flywheels within the inerter using the structural parameters and a finite element platform; formulating constraint equations and transformation formula to simulate translational-rotational conversion and inertia amplification mechanism of the inerter; integrating the force and constraint information to achieve the finite element simulation of the inerter. The finite element simulation method for the inerter addresses the challenge of lacking “inerter units” and the inability to simulate inertia components in general finite element software platforms. It also overcomes the technical bottleneck of real-time dynamic coupling simulation between inerter and complex engineering structures. This may effectively promote the design, optimization, and application of inerter in the vibration control of large-scale engineering structures.
NATIONAL ENGINEERING RESEARCH CENTER OF HIGH-SPEED RAILWAY CONSTRUCTION TECHNOLOGY (Chine)
Inventeur(s)
Guo, Wei
He, Chongjian
Ren, Shaoxun
Yu, Zhiwu
Jiang, Lizhong
Abrégé
A model predictive control method for a seismic simulation shaking table, comprising: S1: acquiring offline data of input signals and output signals of a seismic simulation shaking table; S2, on the basis of the acquired offline data, using sparse regression to identify a kinetic equation of the seismic simulation shaking table; and S3, on the basis of the kinetic equation, predicting output signals of the seismic simulation shaking table under different input signals, and using an optimization model to correct the input signals; moreover, on the basis of real-time data of the input signals and the output signals collected by the seismic simulation shaking table in the control process, performing parameter updating on the kinetic equation; and repeating the processes of prediction, optimization of input signals, and parameter updating until a preset target signal has been reproduced. The method has good precision and stability, and can effectively improve the control performance of the seismic simulation shaking table. The present invention further relates to a model predictive control system for a seismic simulation shaking table, a medium, and a terminal.
24244)(OH)], thereby achieving the high-selectivity deep purification of beryllium ions in beryllium-containing wastewater, so as to eliminate beryllium pollution in a water environment. The beryllium (II) mineralization reagent is particularly suitable for the treatment of beryllium-containing wastewater generated during the smelting process of non-ferrous metals, such as beryllium, lithium, lead and zinc, and can reduce the beryllium concentration in the beryllium-containing wastewater to 0.002 mg/L or below, which is lower than the discharge standard of 5 μg/L specified in the National Comprehensive Wastewater Discharge Standard (GB8978-1996). In addition, the beryllium (II) mineralization reagent has the advantages of low costs, no toxicity, a simple construction process, a high purification efficiency, good long-acting stability of precipitated slag, no secondary pollution, etc.
C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p. ex. par addition d'oligo-éléments
C02F 1/58 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par élimination de composés spécifiés dissous
C02F 9/00 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout
C02F 1/66 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par neutralisationAjustage du pH
C02F 103/16 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de procédés métallurgiques, c.-à-d. de la production, de la purification ou du traitement de métaux, p. ex. déchets de procédés électrolytiques
15.
Method for recycling copper-containing wastewater from micro-etching
2 #COOH, adding the FeS-based pH-responsive material to weakly-acidic copper-containing wastewater from the micro-etching to allow a reaction, and conducting processes such as sulfide precipitation, exchange, adsorption complexation, and flocculation precipitation to finally obtain a precipitate with CuS as a main component. This method makes full use of the pH responsiveness and abundant surface active sites of the FeS-based pH-responsive material, and can control a recovery rate of copper ions in the wastewater at 99.8% or more merely by adjusting a pH value of the copper-containing wastewater from the micro-etching.
C02F 103/34 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'industrie chimique non prévue dans les groupes
16.
STANDING WAVE ACOUSTOFLUIDIC DEVICE FOR SORTING EXOSOMES IN BODY FLUIDS AND METHOD FOR USING SAME
Disclosed are a standing wave acoustofluidic device for sorting exosomes in body fluids and a method for using same. The standing wave acoustofluidic device for sorting exosomes in body fluids comprises an upper microfluidic chip and a lower acoustic wave excitation apparatus. The microfluidic chip comprises a channel chip and a cover plate, and the acoustic wave excitation apparatus comprises a piezoelectric transducer and an acoustic wave coupling liquid layer. The piezoelectric transducer is reversibly connected to the cover plate by means of the acoustic wave coupling liquid layer. The piezoelectric transducer is a piezoelectric ceramic. The channel chip is provided with a body fluid sorting channel, and the cover plate is provided with a micro-channel groove array structure corresponding to the body fluid sorting channel. The micro-channel groove array structure adjusts acoustic waves excited by the piezoelectric transducer, such that the acoustic waves are modulated in a space composed of the channel chip and the cover plate to form a required standing wave acoustic field. The present invention has advantages such as not affecting cell activity, being unaffected by temperature and the like, offering a stable sorting process, a simple manufacturing process, and low regulation difficulty, and eliminating the need to match the width, depth, and the like of microfluidic channels with the half-wavelength of acoustic waves.
C12M 1/42 - Appareils pour le traitement de micro-organismes ou d'enzymes au moyen d'énergie électrique ou ondulatoire, p. ex. magnétisme, ondes sonores
C12M 1/00 - Appareillage pour l'enzymologie ou la microbiologie
B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes
17.
LOW-ALLOYED MAGNESIUM ALLOY WITH HIGH DUCTILITY AND HIGH DAMPING CAPACITIES AT ROOM TEMPERATURE AND PREPARATION METHOD THEREOF
A low-alloyed magnesium (Mg) alloy with high ductility and high damping capacities at room temperature and a preparation method thereof are provided. The low-alloyed Mg alloy with high ductility and high damping capacities includes the following elements in percentage by mass: 0.5-1.5% of Gadolinium (Gd), 0.5-0.9% of Zinc (Zn), 0.3-0.6% of Zirconium (Zr), and the balance of Mg (Mg). By adding low-content Gd, Zn and Zr elements to a Mg matrix, the low-alloyed Mg alloy not only has effects of solid solution strengthening, precipitation strengthening and fine-grain strengthening, but also, under the interaction effect of a plurality of elements, promotes the non-basal dislocation slipping of Mg alloy, and stimulates the dislocation damping mechanism, thereby effectively improving the plasticity and damping properties of Mg alloy. The low-alloyed Mg alloy with high ductility and high damping capacities at room temperature has excellent plasticity and damping properties at room temperature.
C22C 23/06 - Alliages à base de magnésium avec un métal du groupe des terres rares comme second constituant majeur
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
18.
RHEOLOGICAL DIE CASTING PREPARATION METHOD FOR ALUMINUM ELECTROLYTIC METAL CERAMIC ANODE
The present invention provides a rheological die casting preparation method for an aluminum electrolytic metal ceramic anode, comprising: mixing metal ceramic powder and an organic binder to obtain a material agglomerate, molding the material agglomerate to obtain an anode shell material, fixing a T-shaped electric connection guide rod containing a soldering lug to the center of a mold, preheating the mold, and preheating the anode shell material, then injecting the anode shell material into a cavity of the mold via a flow channel, cooling and demolding the mold to obtain a metal ceramic anode blank containing the T-shaped electric connection guide rod, degreasing and sintering the metal ceramic anode blank containing the electric connection guide rod to obtain the aluminum electrolytic metal ceramic anode. According to the present invention, integrated near net shape forming of the special-shaped metal ceramic anode shell and the electric connection guide rod is realized by means of the rheological die casting preparation method, and the bottom of the T-shaped guide rod is tightly connected to the inner wall of the metal ceramic, solving the problems that aluminum electrolytic metal ceramic of a complex structure is difficult to form, and the electric connection guide rod is prone to falling off.
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
B22F 3/22 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet pour la fabrication de pièces par coulée en moule poreux ou absorbant, c.-à-d. par coulée d'une suspension de poudre métallique dans un moule poreux, d'une façon analogue au coulage de la barbotine
A reagent for detecting aging neutrophils in blood and the use thereof. The reagent can be used for assisting in diagnosis of mental disorders, and for predicting and/or judging the therapeutic effects of a drug for mental disorders. By using the number of aging neutrophils in blood as a blood diagnosis marker for mental disorders, the reagent for detecting aging neutrophils in blood can rapidly diagnose mental disorders, and also provides therapeutic targets and important bases for clinical applications such as gene therapy and drug therapy.
C12Q 1/02 - Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismesCompositions à cet effetProcédés pour préparer ces compositions faisant intervenir des micro-organismes viables
A61K 45/00 - Préparations médicinales contenant des ingrédients actifs non prévus dans les groupes
A61P 25/18 - Antipsychotiques, c.-à-d. neuroleptiquesMédicaments pour le traitement de la manie ou de la schizophrénie
20.
INTEGRATED PREPARATION METHOD FOR ALUMINUM ELECTROLYSIS METAL ANODE SHELL AND ELECTRIC CONNECTION
An integrated preparation method for an aluminum electrolysis metal anode shell (1) and electrical connection. The method comprises: mixing a metal shell powder and a thermoplastic adhesive to obtain a semi-solid hot material, crushing the semi-solid hot material to obtain metal shell feeding particles, preheating a mold to 60-100°C, then filling the preheated feeding particles into the mold, performing pressurization, raising the temperature to 5-50°C above the softening point temperature of the thermoplastic adhesive, performing rheological pressing to obtain a metal shell blank, filling an alloy inner core powder into the core of the metal shell blank to obtain an inert anode blank having an alloy inner core (2), and sintering the inert anode blank having the alloy inner core (2) to obtain an inert anode for aluminum electrolysis.
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 1/103 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques contenant un liant organique comprenant un mélange de, ou obtenu par réaction de, plusieurs composants autres que les solvants ou les agents lubrifiants
The present disclosure provides a method for generating a small molecule based on a pharmacophore model, a device, and a medium. The method includes: using a fully connected graph to represent a pharmacophore model; using a feature extraction model based on a graph neural network to extract a feature vector of the pharmacophore model from the fully connected graph of the pharmacophore model; performing random sampling on a specified latent variable distribution to obtain a latent variable; and inputting the latent variable and the feature vector of the pharmacophore model to a pre-trained decoder to generate a molecule matching the pharmacophore model, where the pre-trained decoder is a decoder obtained by training a variational autoencoder with training samples.
A method for detecting a QRS complex of an electrocardiogram signal, an apparatus therefor, a device and a medium are provided. A QRS complex of an electrocardiogram signal is detected by a detection model including a DenseNet and a dual-channel Long Short-Term Memory (LSTM). Spatial feature information of the QRS complex in the electrocardiogram signal is learned through the DenseNet, and then the spatial feature learned by the DenseNet and the time sequence data are input into respective channels of the dual-channel LSTM, so that the dual-channel LSTM can fuse the spatial information and the time sequence information of the QRS complex in the electrocardiogram signal, thereby improving a segmentation effect of the model on features, and finally improving accuracy of detecting the QRS complex.
The present disclosure provides a preparation method of arsenic iron alloy, which includes the following steps: ball milling arsenic powder and iron powder under the protection of inert atmosphere according to a molar ratio of 0.1˜0.35:1 or 0.35˜2:1 to obtain pretreated material; vacuum hot pressed sintering the pretreated material to obtain arsenic iron alloy. The vacuum hot press sintering process includes: placing the pretreated material in a vacuum environment; and sintering the pretreated material; in the sintering process, a pressure of 30˜50 MPa is applied to the pretreated material. The sintering process includes: heating the pretreated material from room temperature to 400˜500° C., and holding for 0.5˜1 h; and heating the pretreated material from 400˜500° C. to 600˜800° C., and holding for 0.5˜1 h. The present disclosure can obtain arsenic iron alloy with high performance and low leaching toxicity.
NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES (Chine)
Inventeur(s)
Jiang, Canhua
Liang, Ye
Zuo, Guokun
Zhang, Jiaji
Zheng, Yutian
Xiao, Cong
Song, Tao
Deng, Hua
Jian, Ai
Abrégé
A connecting device and a surgical navigation system. The connecting device is used for connecting two adjacent cascade pipes (6) of the surgical navigation system. The connecting device comprises connecting pipes (1), butt joint pipes (2), sleeves (3), and positioning beads (4); each connecting pipe (1) and each butt joint pipe (2) are respectively arranged at two ends of the corresponding cascade pipe (6); the butt joint pipe (2) on one cascade pipe (6) is sleeved on the outer wall of the connecting pipe (1) on the other cascade pipe (6); a connecting protrusion (11) is provided on the connecting pipe (1); a connecting groove (21) communicated with the interior of the butt joint pipe (2) is formed in the inner wall of the butt joint pipe (2). On the one hand, the dual fixed connection facilitates adjusting the length of the cascade pipes (6), so that, on the basis of the actual situation, a user can adjust the length of the cascade pipes (6) in the surgical navigation system, and on the other hand, the gap at the joint of the two adjacent cascade pipes (6) during connection can be reduced, so that the connection stability is improved, the connection accuracy is improved, and errors are reduced.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
The present disclosure provides a measured positioning surgical navigation system and method. The system includes: a three-dimensional (3D) image reconstruction module, including a ct device, a magnetic resonance device and an ultrasound device; a 3D positioning error correction module, including a plurality of base stations and positioning chips; a scalpel, provided with a tail position sensor; and a controller, wherein the devices, the base stations, the positioning chips, and the sensor are each communicatively connected to the controller. A first 3D image is established according to the devices of the 3D image reconstruction module, a second 3D image of a lesion of a patient is constructed according to the 3D positioning error correction module, and fusion correction is performed on the two 3D images to obtain a target positioning data set, and in combination with a real-time position of the scalpel, surgical step navigation is performed, thereby improving the surgery.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
26.
COORDINATED RECOVERY METHOD FOR WASTE LITHIUM ION BATTERY MATERIAL AND HIGH-GRADE NICKEL MATTE
A coordinated recovery method for a waste lithium ion battery material and high-grade nickel matte, comprising the following steps: (1) mixing a waste lithium ion battery material with high-grade nickel matte, so as to obtain a mixture; (2) roasting the mixture, so as to obtain a co-roasted solid product; (3) leaching the solid product by means of deionized water, so as to obtain a lithium-containing water leachate and water leaching residues; (4) acid-dissolving the water leaching residues, so as to obtain an acidic leachate, and then precipitating and removing impurities from the leachate and performing extraction separation, so as to obtain metal sulfate; and (5) carrying out purification treatment on the lithium-containing water leachate, so as to obtain lithium carbonate. The present invention preferentially extracts lithium from retired lithium ion batteries, prepares nickel sulfate by means of atmospheric acid leaching of high-grade nickel matte, converts valuable metal in the lithium batteries into water-insoluble forms, and achieves a lithium leaching rate of over 92% and efficient separation of the valuable metal.
An electroseismic integrated monitoring method comprises: transmitting a current signal including at least one of: a multi-frequency current signal or a single-frequency current signal, the frequency of the current signal being determined according to a proppant, and the proppant performs telescopic vibration under excitation of the current signal at a predetermined frequency. An acoustic wave signal received by a seismic sensor. The acoustic wave signal is an acoustic wave signal generated for the current signal to excite the proppants to perform telescopic vibration. A vibration position of the proppant at a fracturing layer is determined according to the acoustic wave signal. The vibration position is used to determine a basis for propped fracture characteristics. An electrostrictive material is used as the proppant, so that the position of the proppant can be monitored by means of microseism.
NO.3 ENGINEERING CO., LTD. OF CCCC THIRD HARBOR ENGINEERING CO., LTD. (Chine)
CCCC THIRD HARBOR ENGINEERING CO., LTD. (Chine)
CENTRAL SOUTH UNIVERSITY (Chine)
Inventeur(s)
Luo, Weibo
Pan, Qiujing
Zhang, Zhiyong
Wu, Hongtao
Liu, Lei
Wang, Shuying
Abrégé
Disclosed in the present invention are a shield tunneling digital twin stratum construction method and system fusing multi-source data, and the method comprises: first using investigation data of drilling, geotechnical tests, in-situ tests, etc. and considering the characteristics of "sparsity", "multi-dimensional correlation" and "spatial variability" of stratum distribution and geotechnical parameters to construct a multi-layer perceptron-based stratum three-dimensional distribution model, and establish a geotechnical parameter multivariate correlation three-dimensional conditional random field based on sparse Bayesian learning technology; using the stratum distribution and the multivariate geotechnical parameter random field to establish a shield tunnel tunneling random finite element digital twin model; and, on the basis of coupling double-unscented Kalman filtering, fusing shield tunneling mechanical parameters and stratum deformation monitoring data, and performing construction feedback-based dynamic inversion on stratum distribution uncertainty and geotechnical parameter space correlation to achieve fine characterization of stratum distribution and geotechnical parameters in front of a shield tunneling surface, so as to obtain a shield tunneling dynamic digital twin stratum model.
G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
29.
SIMPLE REFLEX INTELLIGENT AGENT FOR CRAWLING LITERATURE DATA AND METHOD OF CRAWLING LITERATURE DATA
The present disclosure discloses a simple reflex intelligent agent for crawling literature data and a method for crawling literature data. The simple reflex intelligent agent includes a performance module, an environment module, a sensing module and an actuator module; the performance module is used to construct a performance objective function; the environment module constructs an environment collection for the simple reflex intelligent agent; the sensing module monitors whether system time and a number of journals have been changed; the actuator module sets targets based on the performance objective function and automatically crawls literature data.
An aluminum electrolytic cell. A middle channel zone for collecting gas/heat is provided in an upper portion of a central gap of the aluminum electrolytic cell, and thus a high-temperature melt in the aluminum electrolytic cell and an area above the high-temperature melt are divided into three temperature zones with gradient temperature distribution, such as an inner heat-preserving zone, the middle channel zone and an outer sealed heat-preserving zone, such that the heat emitted from the upper portion of the electrolytic cell is carried by flue gas as much as possible, and is centralizedly and controllably discharged through the middle channel zone by means of flue gas flow regulation and control. Thus, the problems of it not being possible for a conventional single heat-preserving layer to seal the heat emitted from an upper portion and to seal flue gas to the maximum degree, etc. are solved. Moreover, in the present invention, anode carbon blocks and anode steel claws are all sealed in the outer sealed heat-preserving zone, which prevents the anode carbon blocks, the anode steel claws, anode guide rods, etc. in the outer sealed heat-preserving zone from being directly exposed to high-temperature flue gas and thus corroding, and which creates conditions for the use of an ultra-low voltage energy-saving electrolysis process or the implementation of a new energy consumption oriented flexible operation process, and for generating power by means of waste heat of the high-temperature flue gas.
NATIONAL RAILWAY ADMINISTRATION EQUIPMENT TECHNOLOGY CENTER (Chine)
SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE OF DAQIN RAILWAY CO., LTD (Chine)
CHANGSHA NANRUI RAIL TRANSPORT ELECTRIC EQUIPMENT CO., LTD (Chine)
Inventeur(s)
Li, Wei
Wei, Xiang
Yu, Yongsheng
Wang, Songxu
Liu, Zhijian
Yao, Meiqi
Wang, Kai
Zhang, Wenlu
Li, Ting
Abrégé
A locomotive wireless multi-heading remote distributed power traction operation control system. A set of differential multi-heading control unit (8) is added to a train control and management system of an original locomotive, and is combined and fused with a train control and management system (21), a brake control unit (24), a train safety monitoring device (20), a locomotive logic control unit (23), and a locomotive third-party device (25) to implement wireless multi-heading distributed power traction control operation of locomotives in a heavy haul combined train, and adapt to train multi-heading traction control operation of differential locomotives of a heavy haul combined train or multi-heading operation of different railway locomotives. Also provided is a multi-heading locomotive.
The present application provides a modular membrane isolation carbon desorption device, a carbon capture system, a method, and an application thereof. The device comprises an electrolyzer in which a plurality of anion exchange membranes are arranged, dividing the electrolyzer into multiple electrolysis units. Each electrolysis unit is equipped with electrodes, and the polarities of the electrodes in adjacent units are opposite. An electrolysis unit containing a positive electrode function as an anode electrolysis unit, while one with a negative electrode serves as a cathode electrolysis unit. This application effectively reduces heat loss during the carbon desorption process and enables dual-sided dissolution of the positive electrode and dual-sided deposition of the negative electrode, thereby enhancing electrolysis efficiency during the carbon desorption process.
B01D 53/96 - Régénération, réactivation ou recyclage des réactifs
B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption
B01D 53/18 - Unités d'absorptionDistributeurs de liquides
GIANT SEQUOIA AI TECHNOLOGY (CHANGSHA) LIMITED (Chine)
Inventeur(s)
Yao, Hongchun
Chen, Rujun
Guo, Zhenwei
Shen, Ruijie
Chen, Siwen
Zhang, Haojie
Abrégé
A method and an apparatus for acquiring induced polarization parameters by using a spread spectrum signal, a medium and a device are provided, where the method includes: sending a spread spectrum signal to a detection object and acquiring time sequence data of the spread spectrum signal; acquiring a frequency spectrum value of each main frequency in the spread spectrum signal, and obtaining a normalized complex value of each main frequency based on the frequency spectrum value of each main frequency; obtaining a frequency value of each combined frequency in the spread spectrum signal; calculating a normalized complex value of each combined frequency according to the normalized complex value of each main frequency; and calculating induced polarization parameters of all combined frequencies according to frequency values of all combined frequencies and normalized complex values of all combined frequencies.
NATIONAL RAILWAY ADMINISTRATION EQUIPMENT TECHNOLOGY CENTER (Chine)
SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE OF DAQIN RAILWAY CO., LTD. (Chine)
CHANGSHA NANRUI RAIL TRANSPORT ELECTRIC EQUIPMENT CO., LTD. (Chine)
Inventeur(s)
Li, Wei
Wang, Songxu
Yu, Yongsheng
Zhang, Wenlu
Wu, Jianhua
Chen, Guozhong
Wang, Kai
Abrégé
Disclosed in the present invention are a heavy-haul train and a longitudinal dynamics traction operation optimization control system and method thereof. A model prediction function is added to a locomotive wireless double heading system so as to suppress large longitudinal impulse that is likely to be generated when the operation speed of the heavy-haul combined train is regulated, especially when the heavy-haul train is switched at a grade change point working condition, and the major potential safety hazard that affects the safe and stable operation of the heavy-haul combined train is avoided. In a distributed dynamic marshalling mode of the heavy-haul combined train, the requirements for the difference between the tractive force and the regenerative braking force of a master locomotive and slave locomotives of a multi-locomotive under the same working condition are predicted by the model, the amplitude of the power for the traction and the regenerative braking of the master locomotive and the slave locomotives is reasonably adjusted, and asynchronous control of the train under different working conditions is gradually achieved, so that the purposes of optimizing the dynamics performance of the heavy-haul combined train and reducing the longitudinal impulse of the heavy-haul train are achieved, and the operation of the train is guaranteed.
B61L 23/08 - Dispositifs de commande, d'avertissement ou autres dispositifs de sécurité le long de la voie ou entre les véhicules ou les trains pour commander le trafic dans une direction uniquement
B61L 15/00 - Indicateurs de signalisation sur le véhicule ou sur le train
35.
METHOD FOR PREPARING HIGH-PURITY METALLIC ARSENIC FROM ARSENIC-CONTAINING SOLID WASTE THROUGH SHORT FLOW PROCESS
A method for preparing high-purity metallic arsenic from arsenic-containing solid waste through a short flow process is provided. The method includes: performing oxidative alkaline leaching on nonferrous metallurgy arsenic-containing solid waste to obtain an arsenic-containing alkaline leaching solution; sequentially adding a mixed ammonium magnesium reagent consisting of a carboxyl and/or hydroxy-containing water-soluble macromolecular organic matter, a magnesium compound and an ammonium compound, and a hydrophobic macromolecular organic matter having a periodic geometric structure into the arsenic-containing alkaline leaching solution, and taking a reaction under stirring to obtain complex arsenate crystals cladded with an organic matter; and roasting the complex arsenate crystals cladded with the organic matter, then mixing the roasted complex arsenate crystals cladded with the organic matter with carbon powder, performing reduction roasting, and recycling metallic arsenic from smoke through condensation.
A high-strength and tough multi-component soft magnetic alloy and preparation method thereof are provided. The high-strength and tough multi-component soft magnetic alloy is composed of the following components in atomic percentage: Fe 32-45%, Co 24-29%, Ni 24-29%, Al 2.5-8%, Ti 1.5-3.5%, Ta 1.0-5%, Nb 0-2%, and Mo 0-2%. The multi-component alloys prepared by the present invention exhibit a face-centered cubic structure of the matrix, featured with high strength, high ductility, low coercivity and relatively high saturation magnetization. These properties make it suitable for manufacturing critical components for applications in industries such as electrical engineering, automatic control, mobile communications, and others.
C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
C22C 1/02 - Fabrication des alliages non ferreux par fusion
C22F 1/16 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid des autres métaux ou de leurs alliages
H01F 1/147 - Alliages caractérisés par leur composition
A magnetotelluric impedance estimation method is provided, belonging to the field of exploration. The method specifically includes the following steps: Step 1, performing Fourier transform on electromagnetic time series data of a plurality of electromagnetic field components to obtain a frequency spectrum array corresponding to each of electromagnetic field components; Step 2, identifying an interference frequency of each of electromagnetic field components according to the frequency spectrum array; Step 3, merging the interference frequency and a deviation value; Step 4, attenuating the frequency spectrum array using the merged interference frequency and deviation value; Step 5, recovering the electromagnetic time series data using the attenuated frequency spectrum array, so as to obtain a transform result; and Step 6, performing magnetotelluric impedance estimation according to the transform result. By the scheme disclosed, the adaptability and accuracy of magnetotelluric impedance estimation are improved.
A device for testing adhesion between a powder material and a wall surface, comprising a support system, a pressurization system, a stretching system, and a control system. The support system plays a role in fixing and supporting and is composed of a base (3) and a rack (4); a support guide rail (2) and a pressure applying motor (18) are arranged on the base (3); the pressure applying motor (18) is connected to a pressure applying ball screw (1) to control lifting/lowering of a lifting/lowering rod (5); and a support platform (6) is connected to the lifting/lowering rod (5) and moves up and down along with the lifting/lowering rod (5). A rotating motor (16) and a bevel gearbox (7) are arranged on the support platform (6), wherein an output shaft of the bevel gearbox (7) is connected to a pressure sensor (8) for measuring and controlling pressure applied to the powder material. The pressure sensor (8) is connected to a pressure applying end cover (9) for applying pressure to a test material (11) in a cylindrical loading barrel (10) and rotating forwardly and reversely under the driving of a rotating servo motor (16) to better apply pressure; and in such a process, the size of the test material is compressed, and at this time, an industrial personal computer (17) controls the pressure applying motor (18) to compensate for the position of the pressure applying end cover (9), thereby ensuring that the pressure sensor (8) is maintained at set pressure. The cylindrical loading barrel (10) is fixed on the rack (4); an upper end of the cylindrical loading barrel (10) is in contact with a stretching end cover (12), such that the test material (11) will be adhered to the stretching end cover (12) after being pressed; during testing, the stretching end cover (12) can slowly move upwards at a constant speed under the driving of a ball screw (14), the tension of the stretching end cover is tested by a tension and compression sensor (13) and collected to the industrial personal computer (17), and a stretching speed is determined by a rotating speed of a stretching servo motor (15) and is controlled by the industrial personal computer (17).
A flexible power plant based on supercritical carbon dioxide power circulation is provided. The plant includes a heat source circulation system, a thermodynamic circulation system, a desalination system and a control system. The heat source circulation system is connected to the thermodynamic circulation system and the seawater desalination system, and provides heat source required for their operations, respectively; the control system is simultaneously connected to respective actuators of the heat source circulation system, the thermodynamic circulation system and the seawater desalination system, and controls their operations, correspondingly.
F01K 25/10 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières ces vapeurs étant froides, p. ex. ammoniac, gaz carbonique, éther
C02F 1/06 - Distillation par évaporation dite évaporation "flash"
C02F 103/08 - Eau de mer, p. ex. pour le dessalement
F01K 7/32 - Ensembles fonctionnels de machines à vapeur caractérisés par l'emploi de types particuliers de machines motricesEnsembles fonctionnels ou machines motrices caractérisés par un circuit de vapeur, un cycle de fonctionnement ou des phases particuliersDispositifs de commande spécialement adaptés à ces systèmes, cycles ou phasesUtilisation de la vapeur soutirée ou de la vapeur d'évacuation pour le réchauffage de l'eau d'alimentation les machines motrices utilisant la vapeur à la pression critique ou hypercritique
F01K 23/06 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle
40.
POLYCRYSTALLINE DIAMOND COMPOSITE SHEET HAVING RIPPLE-SHAPED GRADIENT LAYER AND PREPARATION METHOD THEREOF
The disclosure relates to a polycrystalline diamond composite sheet having a ripple-shaped gradient layer and a preparation method thereof. The polycrystalline diamond composite sheet consists of a cemented carbide substrate, a ripple-shaped gradient layer of a multi-layer structure, and a polycrystalline diamond layer from bottom to top. In the ripple-shaped gradient layer, a content of polycrystalline diamond increases from bottom to top, and a content of cemented carbide decreases from bottom to top. In the ripple-shaped gradient layer, an amplitude of a ripple-shaped structure is 0.2 to 0.6 mm, a wavelength is 1 to 2 mm, a spacing between an upper ripple and a lower ripple of a top layer is set to a gradient of (t/2 to t) mm to t mm from a peak to a trough, and spacings between an upper ripple and a lower ripple of remaining layers are all t mm, wherein t is 0.05 to 0.4.
C04B 37/02 - Liaison des articles céramiques cuits avec d'autres articles céramiques cuits ou d'autres articles, par chauffage avec des articles métalliques
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B33Y 80/00 - Produits obtenus par fabrication additive
C04B 35/532 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de carbone, p. ex. graphite obtenus à partir de particules carbonées avec ou sans autres composants non organiques contenant un liant carbonisable
A simple reflex agent for crawling literature data and a literature data crawling method. The simple reflex agent comprises: a performance module, an environment module, a sensing module, and an actuator module; the performance module is used for constructing a performance objective function; the environment module is used for constructing an environment set of the simple reflex agent; the sensing module is used for monitoring whether the system time and the number of journals are changed; and the actuator module is used for setting an objective on the basis of the performance objective function and automatically crawling literature data. Comprehensive and accurate literature data crawling can be implemented.
Disclosed in the present invention is a method for calculating the Chinese-English semantic similarity of paragraph-level texts, comprising: respectively performing paragraph representation vector extraction on a Chinese paragraph and an English paragraph; modeling paragraph texts in terms of three levels of topic words, sentences, and paragraphs, and performing information interaction within and among the levels on the basis of a graph attention network; then fusing information of the three levels of topic words, sentences, and paragraphs to obtain paragraph representation vectors; and calculating the distance between the paragraph representation vectors to obtain the semantic similarity of the Chinese paragraph and the English paragraph. According to the method, information of three levels of topic words, sentences, and paragraphs are fused to obtain high-quality paragraph representation vectors, thereby achieving high-accuracy calculation of the semantic similarity of Chinese-English cross-language paragraphs.
2323233, and according to different addition amounts of Cr powder, the conductivity is 3-20% IACS higher than that before addition of the Cr powder. The copper alloy is widely used in the fields of new energy vehicles, ultra-high-voltage power transmission and transformation, aerospace and high-speed rail transit.
B22F 3/20 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet par extrusion
B22F 3/17 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet par forgeage
B22F 3/24 - Traitement ultérieur des pièces ou objets
C22F 1/08 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du cuivre ou de ses alliages
H01B 1/02 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement de métaux ou d'alliages
44.
TOOTH GEL AND TOOTH STRIP WITH REMINERALIZATION CAPABILITY AND PREPARATION METHOD OF TOOTH GEL
The present application discloses a tooth gel and a tooth strip with remineralization capability, and a preparation method of the tooth gel. The tooth gel includes the following raw material components by mass: 1-35% of active ingredients, 20-60% of thickening agent, 20-70% of solvent, 5-25% of solid dispersant, 0.1-0.8% of essence, 0.1-1.0% of sweetener and 0.1-1.0% of pH regulator; the raw materials for preparing the active ingredients include calcium phosphate and/or bioactive glass; and the tooth strip includes a three-layer structure: an anti-sticking liner, a dental gel layer and a peel-off backing layer, where the anti-sticking liner is adhered to one surface of the dental gel layer, the other surface of the dental gel layer is adhered to the a peel-off backing layer, and the dental gel layer is a tooth gel.
The disclosure provides a gradient structure cubic boron nitride composite sheet and a preparation method thereof. The gradient structure cubic boron nitride composite sheet consists of a cemented carbide substrate, a gradient transition layer, and a CBN layer from bottom to top. The gradient transition layer consists of N gradient layers, and the N is 4 to 18. From bottom to top, there are sequentially a first gradient layer, a second gradient layer, an Nth gradient layer, and so on. Any of the gradient layers consists of CBN and cemented carbide, in which the volume fraction of the cemented carbide in the Nth layer is 5 to 30% less than the volume fraction of the cemented carbide in the N−1th layer, and the volume fraction of the CBN in the Nth layer is 5 to 30% more than the volume fraction of the CBN in the N−1th layer.
C04B 35/56 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de carbures
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B33Y 70/10 - Composites de différents types de matériaux, p. ex. mélanges de céramiques et de polymères ou mélanges de métaux et de biomatériaux
C04B 35/5831 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures à base de nitrure de bore à base de nitrure de bore cubique
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
The present disclosure provides a preparation method of a fly ash-based ceramic membrane support, including the following steps: 1) subjecting fly ash to alkali washing and acid washing to obtain pretreated fly ash; 2) blending a raw material including the pretreated fly ash, and then conducting aging and extrusion molding to obtain a green body; and 3) spraying a surface water-retaining agent (including glycerol, tung oil, a diol, and polyethylene glycol) on a surface of the green body to allow static curing in a constant-temperature and constant-humidity environment, and then conducting drying and sintering after the curing is completed. The preparation method can effectively improve molding and sintering performances of the fly ash to obtain a fly ash-based ceramic membrane support with a qualified performance.
C04B 35/18 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base de silicates autres que l'argile riches en oxyde d'aluminium
C04B 35/622 - Procédés de mise en formeTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
Disclosed in the present invention are an adaptive sparse recognition and control method and system for a multi-working-condition industrial system, and a device. The method comprises: collecting data of a plurality of known working conditions during an industrial process, recognizing a prediction model for each working condition on the basis of the collected data, constructing a prediction model set, and estimating a prediction error threshold value of each prediction model; collecting the current state quantity, predicting a state quantity at the current moment by using each prediction model and according to a state quantity and a control quantity at the previous moment, and calculating a prediction error; selecting a prediction model having the minimum prediction error, and comparing the prediction error of the prediction model with the threshold value: if the prediction error continuously exceeds the threshold value, determining that a new working condition occurs, using an adaptive update method to update the prediction model having the minimum prediction error, using the prediction model as the current working condition prediction model, and adding the prediction model into the prediction model set; and performing model predictive control on the industrial process under the current working condition. The present invention can provide an accurate prediction model, so as to rapidly and accurately control an industrial process.
G05B 13/04 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques impliquant l'usage de modèles ou de simulateurs
G06N 5/02 - Représentation de la connaissanceReprésentation symbolique
48.
METHOD FOR PREPARING TITANIUM METAL BY MOLTEN SALT ELECTROLYSIS
A method for preparing titanium metal by molten salt electrolysis is provided. The method includes constructing an electrochemical system, where an anode chamber is filled with an anode molten salt electrolyte that contains a titanium-containing raw material and inserted with an anode, a cathode chamber is filled with a cathode molten salt electrolyte and inserted with a cathode, and the anode molten salt electrolyte and the cathode molten salt electrolyte are not in contact with each other, but are connected by a liquid alloy at the bottom of the electrolytic cell; the system for electrolysis is powered on to obtain the titanium metal product at the cathode. The method of the present disclosure can treat low-quality titanium-containing materials, can be operated continuously, and can obtain relatively high-quality titanium.
C25C 3/28 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus du titane, du zirconium, de l'hafnium, du tantale ou du vanadium du titane
A vehicle-following operation risk state determination method and system, and a device, relating to the technical field of data processing. The method specifically comprises: step 1, acquiring trajectory data of a plurality of human-driven vehicles in actual road traffic; step 2, dividing all the human-driven vehicles into K following vehicle groups, each following vehicle group comprising a front vehicle and a rear vehicle; according to the trajectory data and scene discriminant function of the rear vehicle in each following vehicle group, determining that the traffic scene of the following vehicle group is normal following or abnormal following; and on the basis of the trajectory data and style discriminant function of the rear vehicle in each normal following vehicle group, determining that the driving style of a corresponding driver is an aggressive non-sensitive type, a conservative non-sensitive type, an aggressive sensitive type, or a conservative sensitive type; and step 3, performing accident risk determination on each following vehicle group according to the traffic scene of the following vehicle group and the driving style of the driver. The determination method improves the determination accuracy and adaptability.
G08G 1/052 - Détection du mouvement du trafic pour le comptage ou la commande avec des dispositions pour déterminer la vitesse ou l'excès de vitesse
G08G 1/01 - Détection du mouvement du trafic pour le comptage ou la commande
G08G 1/0967 - Systèmes impliquant la transmission d'informations pour les grands axes de circulation, p. ex. conditions météorologiques, limites de vitesse
G08G 1/0968 - Systèmes impliquant la transmission d'indications de navigation au véhicule
50.
Asymmetric Laplace-based wind power forecasting method and system
The invention provides a wind power forecasting method and system based on an asymmetric Laplace distribution. It utilizes the asymmetric Laplace distribution to model the uncertainty of the power forecasts. First, the maximum information coefficient (MIC) is used to characterize the linear and nonlinear relationship between the target and historical power data to select reasonable and optimal inputs. Then, to avoid the information loss, a multi-scale feature fusion module is proposed which combines the features obtained from different convolutional layers of a convolutional neural network (CNN), thereby further enhancing the feature extraction ability of the traditional CNN. Finally, a BiLSTM is used to extract temporal information and forecast the parameters of asymmetric Laplace distribution.
A method for preparing rare earth alloys by molten salt electrolysis using rare earth oxides as the raw material is provided, where the electrolytic cell used is divided into the anode chamber and the cathode chamber containing melts such as anolyte, catholyte and liquid alloy. The method has the advantages of continuous production, high operability, low requirements on raw material purity and high quality of rare earth alloy products.
A method for preparing lithium metal by molten salt electrolysis is provided. The method is carried out by using an electrolytic cell. The electrolytic cell is divided into an anode chamber and a cathode chamber. The anode chamber is filled with an anode molten salt electrolyte and inserted with an anode, and the cathode chamber is filled with a cathode molten salt electrolyte and inserted with a cathode. The bottom of the electrolytic cell is further filled with a liquid alloy. After the electrolytic cell is powered on, raw materials including lithium chloride, lithium carbonate, lithium hydroxide, lithium oxide, etc. are added into the anode chamber so as to obtain a lithium metal product in the cathode chamber. The method of the present invention has advantages such as continuous production, low requirements for a lithium chloride raw material, and high purity of a lithium metal product.
The present disclosure relates to a high-selectivity hydrophilic electrode for electrochemically extracting lithium and a preparation method thereof. The preparation method includes the step of carrying out surface coating modification on an electrode active material by using polydopamine. The interception of impurity ions is achieved by utilizing the advantages, which polydopamine has, of preferentially accumulating and transporting lithium ions, thereby improving the selectivity of the electrode active material on lithium. In the pulping process of an electrode adsorption material, a hydroxyl-containing polar hydrophilic organic polymer compound is introduced to perform blending modification, thereby improving the hydrophilicity of a binder polyvinylidene fluoride (PVDF). In addition, pore formation via inorganic salts is combined with a drying mode of “low temperature-high temperature” so that the “porous-microcrack” morphology is formed on the electrode, thereby improving the mass transfer effect of the solution inside the electrode. The preparation method of the electrode disclosed by the present disclosure has the characteristics of simplicity, practicability, environmental friendliness, low cost and the like, and is easy for industrial production.
The present disclosure provides a phase inversion pore-forming agent and a pore-forming method for a fly ash-based ceramic flat membrane support. The phase inversion pore-forming agent includes poly(oxyphenylene sulfone) and N-methylpyrrolidone (NMP), and is used in a preparation process of the fly ash-based ceramic flat membrane support. Pores can be formed through phase inversion, forming straight-through pores with gradient distribution inside the ceramic flat membrane support, thus avoiding a low porosity, a poor water flux, and uneven pore formation of the existing fly ash-based ceramic flat membrane support.
C04B 35/622 - Procédés de mise en formeTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
B28B 11/24 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour faire prendre ou durcir
C04B 35/18 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base de silicates autres que l'argile riches en oxyde d'aluminium
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
C04B 38/04 - Mortiers, béton, pierre artificielle ou articles de céramiques poreuxLeur préparation en éliminant par dissolution des substances ajoutées
55.
RADIO FREQUENCY POSITIONING CHIP-BASED SURGICAL OPERATION NAVIGATION SYSTEM
Disclosed is a radio frequency positioning chip-based surgical operation navigation system, relating to the technical field of microscopic radio positioning navigation. By means of using beacons (4, 5, 8) capable of transmitting signals for labeling a lesion tissue (3) and a blood vessel (6), a scalpel (7) is positioned in real time. A detector (1) is used for receiving related signals. The distance between each of the beacons (4, 5, 8) and the detector (1) is determined according to an RSSI ranging method. A real three-dimensional coordinate system is constructed to obtain coordinates of each of the beacons (4, 5, 8). Position correction is performed on the beacon positions of the beacons (4, 5, 8) in combination with a Kalman filtering algorithm metal detection technology. Then, a virtual three-dimensional coordinate system is constructed by means of three-dimensional fusion of corresponding CT images. A coordinate system for real-time navigation is obtained by means of mapping. Ultimately, the effect of assisting an operation in improving the accuracy, shortening the operation time and reducing trauma is achieved.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
G06K 7/00 - Méthodes ou dispositions pour la lecture de supports d'enregistrement
G06T 17/00 - Modélisation tridimensionnelle [3D] pour infographie
G06T 19/00 - Transformation de modèles ou d'images tridimensionnels [3D] pour infographie
56.
TRAJECTORY TRACKING DEVICE CAPABLE OF POSITIONING TIP OF INTERVENTIONAL GUIDE WIRE
The present invention provides a trajectory tracking device capable of positioning a tip of an interventional guide wire. A chip detection assembly is configured for detecting the specific position of a positioning chip in a space of an operating table. A virtual three-dimensional coordinate system established according to an actual space coordinate system of the operating table is provided in a position calculation system. The current coordinates of the positioning chip are calculated according to data returned by the chip detection assembly, such that the coordinate position of the positioning chip is confirmed in the virtual three-dimensional coordinate system. A display is used for displaying the coordinates and high-lightness points. The positioning chip is arranged at the tip of the guide wire and the like. According to the present invention, a digital three-dimensional model of body surface skin and a blood vessel can be accurately constructed, and corresponds to the virtual three-dimensional coordinate system in the system, allowing for accurate positioning of the guide wire in the blood vessel. Meanwhile, multiple visual displays effectively improve an operator's awareness of the position of the tip of the guide wire, thereby improving the operation reliability, safety and operation speed, being capable of shortening the duration of X-ray radiation during insertion of the guide wire, and reducing the cumulative amount of radiation exposure.
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
A61B 90/13 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures pour la chirurgie stéréotaxique, p. ex. système stéréotaxique à cadre avec des guides pour aiguilles ou instruments, p. ex. des glissières courbes ou des articulations à rotule guidés par la lumière, p. ex. pointeurs lasers
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61B 34/00 - Chirurgie assistée par ordinateurManipulateurs ou robots spécialement adaptés à l’utilisation en chirurgie
Provided is an endoscope navigation system, which comprises: an endoscope device, a target positioning chip being arranged in the head end of the endoscope device; an operating bed used for bearing a target subject, wherein body surface labels are arranged at a plurality of anatomical positions of the target object, an auxiliary positioning chip is arranged in the body surface label, and a detection apparatus is arranged on the operating bed; a display; and a processor, wherein the processor is connected to the endoscope device, the detection apparatus, and the display, and the processor is used for: constructing a coordinate system by taking any point in the operating room as an original point, determining the positions of the auxiliary positioning chips in the coordinate system, converting a three-dimensional reconstruction model of the target object under the coordinate system; determining the position of the target positioning chip in the coordinate system and displaying the coordinate system and the positions of the three-dimensional reconstruction model and the target positioning chip in the coordinate system by means of the display, and determining and displaying, by means of the display, the advancing direction of the endoscope device at a furcation site. The endoscope navigation system can navigate the advancing direction of the endoscope at the furcation site.
Provided in the embodiment of the present invention is a B-ultrasonic positioning system capable of performing position information interaction confirmation with a detected target, which belongs to the technical field of surgery and specifically comprises: a lesion positioning chip guided and arranged at the position of a target lesion according to a CT image; a standard surgical bed; a chip detection apparatus arranged on the standard surgical bed; a laser movably arranged on the standard surgical bed, a transmitting end of the laser being perpendicular to the standard surgical bed; a B-ultrasonic probe with two probe positioning chips; a display; and a position calculation module configured to calculate coordinate values of the lesion positioning chip in a three-dimensional coordinate system according to position data and highlight same by means of the display, and control the laser to move to the position right above the lesion positioning chip. The position calculation module controls the B-ultrasonic probe to detect a target lesion and calculates the direct distance between the probe positioning chip close to the B-ultrasonic probe and the lesion positioning chip. By means of the scheme of the present invention, the operation complexity of B ultrasound is reduced, and the positioning accuracy, the real-time performance, and the adaptability are improved.
A61B 8/00 - Diagnostic utilisant des ondes ultrasonores, sonores ou infrasonores
A61B 90/13 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures pour la chirurgie stéréotaxique, p. ex. système stéréotaxique à cadre avec des guides pour aiguilles ou instruments, p. ex. des glissières courbes ou des articulations à rotule guidés par la lumière, p. ex. pointeurs lasers
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
A61G 13/06 - Tables d'opération réglablesLeurs commandes la surface totale de la table pouvant être élevée ou abaissée
A61G 13/10 - Parties constitutives, détails ou accessoires
A61G 13/12 - Appuis qui leur sont spécialement adaptésDisposition des surfaces pour supporter des patients
59.
INTELLIGENT HUMAN BODY SELF-POWERED REGIONAL BLOOD FLOW CONTROL DEVICE
Provided is an intelligent human body self-powered regional blood flow control device. An air bag (11), a plurality of detection sensors, a control circuit, and an arteriopalmus power generation assembly (7) are reasonably deployed, controlled and integrated into a whole, such that the convenience of use of the device is enhanced. The "control circuit" is a key component for integrating the air bag (11) and the detection sensors, and is also a basis for constructing a feedback loop. By means of processing feedback data from the plurality of detection sensors, a pressure component can be intelligently regulated and controlled. The tripartite linkage thus achieves intelligent control over blood flow automation. A lasting and stable energy supply can be provided for the device in a pulse self-energy supply manner, which will greatly improve the convenience and safety of clinical applications. The function of integrating power supply, detection, regulation and control, and alarm reminding achieved by the device is unachievable by any manually controlled blood flow control device at present. The expandability and adaptability of the device in different blood flow control demand scenarios are also incomparable to those of existing devices.
A61B 17/12 - Instruments, dispositifs ou procédés chirurgicaux pour ligaturer ou comprimer par un autre moyen les parties tubulaires du corps, p. ex. les vaisseaux sanguins ou le cordon ombilical
60.
METHOD FOR PREPARING EARLY-STRENGTH LIQUID ACCELERATOR FREE OF ALKALI, CHLORINE, AND FLUORINE
NATIONAL ENGINEERING RESEARCH CENTER OF HIGH-SPEED RAILWAY CONSTRUCTION TECHNOLOGY (Chine)
CHINA RAILWAY NO.10 ENGINEERING GROUP CO., LTD. (Chine)
Inventeur(s)
Yuan, Qiang
Tian, Yi
Yang, Qian
Hu, Chaolong
Chen, Lei
Yu, Zhiwu
Tan, Sui
Abrégé
The present invention provides a method for preparing an early-strength liquid accelerator free of alkali, chlorine, and fluorine. In percentage by mass and on the basis of the sum of the usage amounts of aluminum sulfate, diethanolamine, a pH regulator, a complexing agent, Tween 20, and water, aluminum sulfate accounts for 56%-58%, diethanolamine accounts for 5%-6%, the pH regulator accounts for 0.7%-0.8%, the complexing agent accounts for 1.3%-1.4%, Tween 20 accounts for 0.6%-0.8%, and the remainder is water. The preparation method comprises: after uniformly mixing water, a pH regulator, and a complexing agent, adding the mixture into a reaction kettle, and heating the reaction kettle; adding aluminum sulfate into the reaction kettle, and stirring the mixture until the aluminum sulfate is completely dissolved; adding diethanolamine into the reaction kettle to obtain a premix; and adding tween 20 into the premix to obtain a liquid accelerator. The liquid accelerator prepared in the present invention also achieves the effect of being free of alkali, chlorine, and fluorine while ensuring the effects of rapid setting, early strength, and stability.
C04B 24/28 - Composés macromoléculaires obtenus autrement que par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
C04B 24/04 - Acides carboxyliquesLeurs sels, anhydrides ou esters
C04B 24/06 - Acides carboxyliquesLeurs sels, anhydrides ou esters comportant des groupes hydroxyle
61.
METHOD FOR PRODUCING METAL ALUMINUM BY MOLTEN SALT ELECTROLYSIS OF ALUMINUM OXIDE
A method for producing metal aluminum by molten salt electrolysis of aluminum oxide is provided. The method for producing metal aluminum by molten salt electrolysis of aluminum oxide uses an electrolytic cell. The electrolytic cell is divided into an anode chamber and a cathode chamber, and is filled with melts such as anolyte, catholyte and an alloy medium. The electrolytic cell is powered on to operate and an aluminum oxide raw material is added to the anode chamber to obtain high-purity metal aluminum in the cathode chamber. The disclosure provides an aluminum electrolysis method having the advantages of strong electrolysis operation adaptability, large selectivity of electrolysis materials and raw materials, being energy saving and environmentally friendly, and being capable of directly producing refined aluminum or high-purity aluminum.
Disclosed in the present invention are a high-strength and ductility multi-component soft magnetic alloy and a preparation method therefor. The high-strength and ductility multi-component soft magnetic alloy consists of the following components in atomic percentages: 32-45% of Fe, 24-29% of Co, 24-29% of Ni, 2.5-8% of Al, 1.5-3.5% of Ti, 1.0-5% of Ta, 0-2% of Nb, and 0-2% of Mo. The multi-component alloy matrix prepared by the present invention mainly presents the structural features of a face-centered cubic structure, has excellently matched strength and plasticity as well as relatively low coercive force and relatively high saturation magnetization, and can be made into important devices to be applied to the fields of power industry, automatic control, mobile communications, etc.
H01F 1/147 - Alliages caractérisés par leur composition
63.
PYRIDINE PYRROLE RUTHENIUM COORDINATION COMPLEX, PREPARATION METHOD THEREFOR AND USE THEREOF AS CATALYST FOR ELECTROCATALYZING AMMONIA OXIDATION TO PREPARE HYDRAZINE
A pyridine pyrrole ruthenium coordination complex, a preparation method therefor and use thereof as a catalyst for electrocatalyzing ammonia oxidation to prepare hydrazine is provided. The pyridine pyrrole ruthenium coordination complex takes high-activity metal ruthenium as a central metal ion and compounds containing pyridine pyrrole with electron withdrawing/donating capability as ligands, and thus has relatively high catalytic activity for ammonia oxidation. High conversion rate and highly selective conversion of ammonia can be realized by applying the pyridine pyrrole ruthenium coordination complex to electrocatalytic ammonia oxidation in an organic solvent, with major products including H2, N2, N2H4.
HUNAN COMMUNICATION RESEARCH INSTITUTE CO., LTD. (Chine)
Inventeur(s)
Huang, Helai
Jin, Jieling
Zou, Guoqing
Yao, Guang
Li, Ye
Zhou, Bo
Xu, Xingwei
Li, Yonghan
Dai, Jianjun
Abrégé
An expressway tunnel accident real-time risk prediction method and apparatus, a device, and a medium. The method comprises: acquiring accident data, entrance and exit traffic flow data, and weather data of a target tunnel within a preset historical time period; acquiring entrance and exit traffic flow data and weather data corresponding to each accident of the target tunnel occurring within the preset historical time period, and acquiring contrast data of the entrance and exit traffic flow data and the weather data; taking the entrance and exit traffic flow data, the weather data, and the contrast data as an experimental data set; on the basis of the experimental data set, extracting accident threatening features affecting a tunnel accident risk; training a tunnel accident real-time risk prediction model on the basis of the experimental data set and the accident threatening features; and predicting the tunnel accident risk in real time on the basis of the trained tunnel accident real-time risk prediction model. An expressway tunnel accident risk can be predicted in real time.
Provided in the present invention is a preparation method for an arsenic-iron alloy. The preparation method comprises the steps of: S1, subjecting arsenic powder and iron powder at a molar ratio of (0.1-2) : 1 to a ball-milling treatment under the protection of an inert atmosphere, so as to obtain a pretreated substance; and S2, subjecting the pretreated substance to a vacuum hot pressing sintering treatment, so as to obtain an arsenic-iron alloy, wherein the vacuum hot pressing sintering treatment comprises: placing the pretreated substance in a vacuum environment, sintering the pretreated substance, and applying a pressure ranging from 30 MPa to 50 MPa to the pretreated substance during the sintering process, the sintering process comprising: heating the pretreated substance from room temperature to 400-500ºC and maintaining the temperature for 0.5-1 hour, and then heating the pretreated substance from 400-500ºC to 600-800ºC and maintaining the temperature for 0.5-1 hour. In the present invention, an arsenic-iron alloy with high performance and low leaching toxicity can be obtained.
Coarse particle flotation equipment and method based on coupled fluidization of cyclone and damping are provided. The flotation equipment includes a flotation column. A raw ore feed pipe is provided in an upper part of the flotation column. The flotation column is sequentially divided into a mine tailing bottom launder area, a cyclone mineralization area and a static separation area from bottom to top. A plurality of water-gas mixing jet pipes which are obliquely arranged inwardly and upwardly and communicated with an inner cavity of the flotation column being provided at a side wall of the cyclone mineralization area, jet directions of the plurality of water-gas mixing jet pipes are distributed clockwise or anticlockwise around an axis of the flotation column, and a damping element for reducing turbulence of a water flow is further provided between the cyclone mineralization area and the static separation area.
A static mixed-flow separation net applied to a spiral wound membrane. The static mixed-flow separation net is composed of several separation net strips (1), which are fixed by means of a separation net strip frame (3) and are uniformly distributed at equal intervals in a feeding direction. Each separation net strip (1) is composed of several separation net units (2); each separation net unit (2) is provided with three fluid channels, which are perpendicular to a feeding fluid direction; and a fluid is subjected to a static flow mixing in the separation net units (2), such that no vortex and turbulent flow are generated, and no fluid dead corner exists when the fluid flows through the separation net, in this way, the surface concentration of substances retained on the membrane is reduced, the mass transfer rate is increased, and fluid mixing is strengthened; and while the concentration polarization and the membrane pollution are effectively reduced, the pressure drop and pump consumption, which are increased due to the addition of the separation net during membrane operation are reduced, and thus the energy utilization rate is increased.
B01D 65/08 - Prévention de l'encrassement de la membrane ou de la polarisation par concentration
B01D 63/10 - Modules à membranes enroulées en spirale
B01D 69/00 - Membranes semi-perméables destinées aux procédés ou aux appareils de séparation, caractérisées par leur forme, leur structure ou leurs propriétésProcédés spécialement adaptés à leur fabrication
68.
METHOD FOR PREPARING CEMENTING MATERIAL BY SINTERING ACTIVATION OF COAL GANGUE
A method for preparing a cementing material by sintering and activating coal gangue is provided. The method includes the following steps: (1) crushing coarse-grained coal gangue to predetermined particle size; (2) fully and evenly mixing the crushed coal gangue, the composite additive and water according to a set proportion, and granulating the obtained mixture; (3) distributing, igniting and exhausting the granulated pellets in the sintering machine to obtain decarburized coal gangue sinter; (4) cooling the decarburized coal gangue sinter in a cooler; (5) crushing and finely grinding the cooled coal gangue sinter to obtain a coal gangue active mixture; and (6) mixing the coal gangue active admixture, the fly ash, the quicklime and the gypsum according to a predetermined ratio, and then carrying out injection moulding, mold removal and curing to obtain the coal gangue-based cementitious material.
C04B 28/14 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments de sulfate de calcium
69.
TRAIN HAVING PROTECTION DEVICE WITH SELF-ADAPTIVE CRASHWORTHINESS
A train having a protection device with self-adaptive crashworthiness is disclosed, which relates to the technical field of safety protection of trains. The train includes multiple vehicles, a head vehicle is located at the head end of the train, and a head vehicle energy absorbing coupler mechanism is mounted at the front end of the head vehicle, each two adjacent vehicles are connected to each other by a middle vehicle energy absorbing coupler mechanism. An image acquisition mechanism and a radar detector are mounted at the head vehicle for monitoring whether there is an obstacle ahead the train, measuring distance and collision speed between the train and the obstacle, and for transmitting measured data to a processing center of the train, the processing center optimizes and adjusts impact force at the head vehicle energy absorbing coupler mechanism and the middle vehicle energy absorbing coupler mechanisms based on a collision situation.
A method for preparing a nano-phase strengthened nickel-based superalloy using micron-scale ceramic particles is provided. In the method, a nickel-based superalloy is used as a matrix, and one or more of TiC, TiB2, WC and Al2O3 are used as a strengthening phase. A ceramic particle raw material used as the strengthening phase has a particle size of 1-5 μm and is added in an amount of 1-5 wt. %. A nickel-based superalloy composite powder having homogeneously distributed nano-scale ceramic is prepared by mechanical milling. A nano-scale ceramic phase strengthened nickel-based superalloy is prepared by 3D printing technology, which has a homogeneously distributed nano-scale ceramic phase and excellent mechanical properties.
B22F 10/28 - Fusion sur lit de poudre, p. ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
B22F 10/85 - Acquisition ou traitement des données pour la commande ou la régulation de procédés de fabrication additive
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p. ex. par broyage, meulage ou écrasement à la meule
Disclosed in the present invention are a method for detecting a nucleic acid on the basis of a DNA nanorobot, and the use thereof in a kit or a biosensor. According to the detection method, a padlock probe and a DNAzyme strand are designed according to the sequence of a to-be-detected target gene, and primers, a protection strand and a substrate strand are also correspondingly designed; the amplification of the sequence of a target gene is achieved by means of the NickRCA technique; a DNA nanorobot is constructed by means of DNAzyme; the amplification product binds to the DNA nanorobot to change the conformation of the DNAzyme; the activity of the enzyme is activated to cleave the substrate strand under the action of metal ions to achieve the directional amplification of the signal; a nano-marker is added to the reaction system to serve as a signal reference; and qualitative and/or quantitative analysis of the to-be-detected target gene is achieved by means of sensor detection.
C12Q 1/68 - Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismesCompositions à cet effetProcédés pour préparer ces compositions faisant intervenir des acides nucléiques
72.
MULTIPURPOSE SYSTEM OF COOLING AND HEATING SUPPLY AND FIREFIGHTING SERVO-CONTROL BASED ON ENERGY-STORAGE CO2 CIRCULATION AND OPERATION METHOD OF SAME
A multipurpose system of cooling and heating supply and firefighting servo-control based on energy-storage CO2 circulation and an operating method thereof are provided, the system based on the CO2 compression refrigeration circulation with three-stage compression and multi-stage energy storage, provides three-levels standing cool volume for the cool end, domestic hot water and heating for the hot end, and extinguishing agents CO2 for the firefighting end. By means of a new modular process design, the system realizes the independent operation and free combination of refrigeration circulation in multi-stages, so as to achieve the purpose of adjustable working conditions, flexible output and high efficiency of energy utilization. The multi-stage energy storage of liquid CO2 can realize the “flexibility” of system power consumption, and acts as a standing safety module for firefighting to be put into the safe operation of the energy system.
A62C 35/60 - Réseaux de conduites humides, c.-à-d. contenant la substance extinctrice même lorqu'ils ne sont pas utilisés
F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
73.
PRINTED MATHEMATICAL FORMULA RECOGNITION METHOD AND APPARATUS, AND STORAGE MEDIUM
Disclosed in the present invention are a printed mathematical formula recognition method and apparatus, and a storage medium. The method comprises: acquiring a printed mathematical formula picture, and performing preprocessing; extracting a first feature matrix of the printed mathematical formula picture on the basis of an encoder; extracting context semantic features of the first feature matrix, so as to obtain a second feature matrix; performing relative position encoding on the second feature matrix by using relative position encoding technology, so as to obtain a third feature matrix; and inputting the third feature matrix into a decoder, so as to obtain a Latex-format sequence of a printed mathematical formula, wherein the third feature matrix is formed by sequentially extracting context semantic features and relative position features between elements again on the basis of the first feature matrix, and the extracted features can more accurately reflect the characteristics of the printed mathematical formula, thereby improving the final accuracy of printed mathematical formula recognition.
G06N 3/04 - Architecture, p. ex. topologie d'interconnexion
G06V 10/82 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant les réseaux neuronaux
The present invention discloses a train compartment vibration monitoring method and vibration signal feature library establishment and application methods. The non-intrusive train compartment vibration monitoring method only obtains vibration signals of a main measurement point in a train compartment during actual monitoring. The method accurately and truthfully reflects the relationship between the position of a vibration source and the phase offset and amplitude attenuation, can monitor the vibration of an unknown vibration source, and can identify the abnormal vibration to provide a basis for abnormal vibration processing. The method can realize the reconstruction of vibration source signals on the basis of only measuring the vibration signals of the main measurement point, so as to realize the real-time update of multiple variable vibration signal feature library; and the multivariable vibration signal feature library can provide a data basis for vibration signal optimization decomposition, vibration signal image identification, abnormal vibration signal identification, etc.
A high-strength Al-Cu-Mg-Mn aluminum alloy and a preparation method therefor is provided. The alloy includes the following components in percentage by weight: Si:≤0.5%, Fe: ≤0.5%, Cu: 4.5-6.3%, Mg: 0.6-1.2%, Mn: 0.6-1.5%, Sc: 0.15-0.35%, Zr: 0.1-0.2%, and Y: 0.1-0.3%, the balance being aluminum and non-removable impurities. The preparation method includes: smelting, refining, impurity removing and degassing, pouring, homogenizing heat treatment, three-dimensional large deformation forging pre-deformation, isothermal deformation processing, and heat treatment. A casting mold used is a special combined mold having a metal mold as an inner mold, a surrounding cooling pipe, and a sand mold as an outer mold, and is used to prepare and obtain high-quality, high-performance castings. The heat treatment is solid solution treatment plus gradient aging treatment. The Al-Cu-Mg-Mn aluminum alloy has a tensile strength higher than 520 MPa and an elongation of 12-16%, that is, an increased elongation rate and improved strength.
C22C 21/16 - Alliages à base d'aluminium avec le cuivre comme second constituant majeur avec du magnésium
C22C 21/14 - Alliages à base d'aluminium avec le cuivre comme second constituant majeur avec du silicium
C22C 1/02 - Fabrication des alliages non ferreux par fusion
C22C 1/03 - Fabrication des alliages non ferreux par fusion utilisant des alliages-mères
C22F 1/057 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages d'alliages avec le cuivre comme second constituant majeur
76.
PANCREATIN INACTIVATION STENT DRAINAGE TUBE AND PREPARATION METHOD THEREFOR
A pancreatin inactivation stent drainage tube (1) and a preparation method therefor. The stent drainage tube (1) comprises a stent drainage tube skeleton (4) and pancreatin inactivation layers (2, 3). The stent drainage tube skeleton (4) is made of a transparent medical polyvinyl chloride (PVC) or polyimide (PI) material by means of 3D printing technology, and is of a tubular structure with a smooth outer surface and a wrinkled inner surface. The inactivation layers (2, 3) consist of one or two of Ag and Cu nanoparticle layers of a wrinkled structure. The inactivation layers (2, 3) coat the inner and outer surfaces of the skeleton of the tubular structure. The outer surface is provided with barbs (5) for fixing, and side holes for observation, etc. to remedy the defect that existing stent drainage tubes for pancreaticojejunostomy do not have inactivating activity against pancreatin, thereby improving the safety of pancreaticojejunostomy.
CHINA RAILWAY NO.5 ENGINEERING GROUP CO., LTD. (Chine)
CENTRAL SOUTH UNIVERSITY (Chine)
Inventeur(s)
Xiong, Sheng
Chen, Debin
Fu, Jun
Qiao, Shifan
Fan, Chuangang
Abrégé
Disclosed in the present invention is an oxygen supply, cooling and dust removal method for tunnel construction. The method comprises: continuously digging a plurality of pilot tunnels forward in the same direction; providing a transverse channel, which is used for connecting the pilot tunnels, every X meters in the tunneling direction; importing outside air into a tunnel face of each pilot tunnel in a blowing ventilation mode; measuring the oxygen content, the temperature and the dust content near the tunnel face; when the oxygen content reaches a threshold A1, performing local oxygen production near the tunnel face by means of a mobile oxygen production device; when the temperature reaches a threshold B1, performing local cooling near the tunnel face by means of a mobile cooling device; and when the dust content reaches a threshold C1, performing local dust collection near the tunnel face by means of a mobile dust removal device. When a blowing ventilation mode gradually fails, the operation environment near a tunnel face is improved in a targeted mode by means of mobile devices, such that construction requirements can be met.
Changsha Xingxiao Material Technology Co., Ltd. (Chine)
Inventeur(s)
Liu, Zhiyi
Liu, Fei
He, Guangyu
Abrégé
Provided is a refined Goss-grain aluminum alloy plate and a preparation method thereof. The refined Goss-grain aluminum alloy plate includes the following compositions: 3.7-4.8 wt % of Cu, 1.2-1.7 wt % of Mg, 0.3-0.8 wt % of Mn, 0.03-0.10 wt % of Ti, and the balance of Al. The refined Goss-grain aluminum alloy plate is prepared by a method including subjecting an Al—Cu—Mg alloy ingot with a certain composition to a homogenizing at a temperature of 470-505° C., a hot rolling at high temperature of 465-495° C. with a large deformation of 80%-98% and a high final temperature, then directly to a cold rolling with a small or medium deformation of 5% to 50%, and then to a recrystallization and annealing treatment at a temperature of 300-450° C., a solid solution treatment at a temperature of 460-505° C., and a natural aging treatment for at least 96 hours.
C22C 21/16 - Alliages à base d'aluminium avec le cuivre comme second constituant majeur avec du magnésium
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
Disclosed are a method for constructing a simplified model of a railway vehicle, a collision simulation method and a system. According to the construction method, a refined model is used as a reference for constructing simplified models; the vehicle body at the middle part of a train car is arranged to be of a solid single-shell structure, and two ends are set to have a hollow double-shell structure; setting thickness simplification ratios for a plurality of groups of simplified models, and designing a longitudinal collision working condition and a transverse collision working condition; then, under each type of collision working condition, performing collision simulation on the refined model and on the simplified model under each group of thickness simplification ratios, to obtain a collision response curve for each; then, based on the collision response curves of the simplified models and the refined model, using a CORA evaluation method to calculate a total CORA value corresponding to each simplified model; and finally, selecting an optimal simplified model from the simplified models having a high total CORA value. The simplified models constructed by the present invention are not only applicable for dynamic collision response analysis in complex train accident scenarios, but are likewise applicable in researching passenger secondary collision injuries.
G06F 30/15 - Conception de véhicules, d’aéronefs ou d’embarcations
G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
G06F 119/14 - Analyse des forces ou optimisation des forces, p. ex. forces statiques ou dynamiques
80.
OPTIMIZED METHOD FOR AMPLIFICATION AND PRODUCTION AT SCALE FOR REGULATORY T CELLS
Disclosed are an optimized amplification and at-scale production method for regulatory T cells. The method comprises the following steps: preparing a resuspension comprising umbilical cord blood regulatory T cells; transferring the resuspension comprising umbilical cord blood regulatory T cells into a sterile tube provided with a magnetic pole, and magnetically separating CD4+CD25+CD127- regulatory T cells; adding an amplification and culturing solution into regulatory T cells with magnetic beads for culturing, carrying out initial culturing for 1-2 days, then subculturing once every 1-3 days, and co-culturing for 40-50 days. By means of one-step separation, a good cell amplification effect is achieved (time is shortened and cell activity is good), effective amplification time is increased from 18 to 40-50 days, and the amplification effect does not gradually worsen; regulatory T cell amplification generations and quantity are greatly increased, and the needs of clinical patients can be meet.
A high recovery rate in-vitro amplification method for cryo-preserved umbilical cord blood regulatory T cells, which comprises the following steps: performing recovery on cryo-preserved umbilical cord blood regulatory T cells after primary amplification, and then using a serum-free culture solution to re-suspend the cells; adding the obtained re-suspended solution into an an amplification and culturing solution and performing secondary amplification and culturing, and after 1-2 days of initial culturing, carrying out sub-culturing once every 1-3 days, and co-culturing for 13 days or more, where IL-2 is further added into the amplification and culturing solution. In the present method, recovery and amplification can be re-performed on previously amplified and cryo-preserved regulatory T cells; and the activity of the recovered regulatory T cells subjected to secondary amplification can reach 90% or more, and amplification can continue to be performed (e.g. a third time or a fourth time), and the amplified cells may also be used for clinical treatment, greatly shortening the amount of time that patients await regulatory T cells, and clinical on-demand acquisition can be satisfied.
An antimony-sulfide-containing ore-based molten salt electrolysis continuous production method and apparatus. The method comprises: (1) putting antimony sulfide ore and eutectic molten salt in a high-antimony electrolytic furnace for constant-current voltage-limiting heating electrolytic smelting, in the smelting process, blowing an inert gas to stir the melt, and respectively discharging a metal antimony liquid and elemental sulfur from an antimony discharge port of the high-antimony electrolytic furnace and a flue gas port of the high-antimony electrolytic furnace; and (2) feeding the post-electrolysis melt obtained in step (1) into a depletion electrolytic furnace through a chute for constant-voltage dilution electrolysis, supplementing molten salt before the electrolysis, respectively discharging the metal antimony liquid and elemental sulfur from an antimony discharge port of the depletion electrolytic furnace and a flue gas port of the depletion electrolytic furnace, and discharging post-depletion slag from a slag discharge port. According to the design of molten salt electrolysis antimony smelting in two connected furnaces, the whole electrolysis process can be carried out simultaneously under two different process parameters according to requirements, so that the purpose of enabling low antimony content in the molten salt electrolysis slag, and molten salt and slag component separation is achieved, and the economic and feasible requirements of industrial production technology are satisfied.
The present invention sets forth an alcohol fuel cracking hydrogen production apparatus and a system, wherein the alcohol fuel cracking hydrogen production apparatus comprises: successively securely connected from left to right, an exhaust inlet unit, an alcohol fuel cracking hydrogen production unit and an exhaust outlet unit; on the whole, the alcohol fuel cracking hydrogen production unit has a hollow cylindrical structure, and comprises a nickel-based catalyst microchannel and a copper-based catalyst microchannel; in a cross-section perpendicular to the central axis of the alcohol fuel cracking hydrogen production unit, the nickel-based catalyst microchannel and/or the copper-based catalyst microchannel form a non-equidistant circular distribution. The apparatus, system and control method provided in the present invention can solve the problem of single-catalyst-structure alcohol fuel cracking hydrogen production technology being unable to fully utilize the high-temperature exhaust of an engine, and also of an adverse effect on the service life of the catalyst.
C01B 3/22 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par décomposition de composés organiques gazeux ou liquides
F01N 5/02 - Silencieux ou dispositifs d'échappement combinés ou associés à des dispositifs bénéficiant de l'énergie des gaz évacués les dispositifs utilisant la chaleur
84.
SMALL-MOLECULE GENERATION METHOD BASED ON PHARMACOPHORE MODEL, AND DEVICE AND MEDIUM
A small-molecule generation method based on a pharmacophore model, and a device and a medium. The method comprises: representing a pharmacophore model by a fully connected graph; extracting a feature vector of the pharmacophore model from the fully connected graph of the pharmacophore model by using a feature extraction model based on a graph neural network; performing random sampling on a specified latent variable distribution, so as to obtain a latent variable; and inputting the latent variable and the feature vector of the pharmacophore model into a pre-trained decoder, so as to generate molecules matching the pharmacophore model, wherein the trained decoder is a decoder obtained by training a variational autoencoder by using a training sample. The method can be applied to ligand-based drug design, receptor-based drug design, optimization of lead compounds and the finding of substitutes addressing drug resistance, and is used for constructing molecular databases for virtual screening, such that molecular screening based on large-scale federated databases is replaced. Therefore, blind experimental works are reduced, the time and cost for researching and developing drugs are saved on, and the pressure on researching and developing drugs is relieved.
ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING CO., LTD. (Chine)
CENTRAL SOUTH UNIVERSITY (Chine)
Inventeur(s)
Ye, Hengdi
Yan, Xu
Li, Qian
Wei, Jinchao
Chai, Liyuan
Zhou, Haoyu
Shen, Weimin
Abrégé
A method for co-processing hazardous waste by a rotary kiln and a sintering machine. The method comprises: 1) pyrolysis: feeding high-volatile hazardous waste into a rotary kiln (C1) from a kiln head (1), feeding combustion-supporting air into the rotary kiln (C1) from a kiln tail (3), and pyrolyzing the high-volatile hazardous waste in a pyrolysis chamber (20201); 2) incineration: feeding material residues obtained after pyrolysis and pyrolysis gas into an incineration chamber (20202), mixing with the combustion-supporting air and burning; 3) flue gas circulation: circulating part of flue gas obtained after the incineration into the rotary kiln (C1) from the kiln head (1); 4) cooling: cooling hot residues obtained after the incineration to obtain cold residues; and 5) sintering: placing the cold residues on a sintering trolley and igniting for sintering, in step 3), the proportion of the amount of the circulated flue gas entering the rotary kiln (C1) in the total flue gas amount being calculated according to the content of combustibles in the flue gas obtained the incineration and the temperature of the flue gas. According to the technical solution of using a counter-flow rotary kiln and a sintering machine, ring formation and slagging during the incineration of iron-containing solid waste in the rotary kiln (C1) is effectively relieved, and accurate control on the amount of the circulated flue gas in the rotary kiln (C1) is achieved.
F23G 5/027 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres comportant un traitement préalable par pyrolyse ou par gazéification
F23G 5/14 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres comportant un chauffage supplémentaire comportant une combustion secondaire
F23G 5/32 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres les déchets ou les combustibles pauvres étant soumis à un mouvement tourbillonnant, p. ex. incinérateurs cycloniques
86.
METHOD FOR SYNCHRONOUSLY REMOVING FLUORINE, CHLORINE AND IRON IN SOLUTION
Disclosed is a method for synchronously removing fluorine, chlorine and iron in a solution, comprising: continuously introducing gas containing a strong oxidizing gas into a solution containing Fe2+, F-and Cl-, at the same time adding a catalyst, adding a neutralizer to control the pH value to be 1.5-4.2, undergoing a reaction under shear enhancement, and performing solid-liquid separation to obtain a purified solution and iron-removed slag. In the present invention, chlorine ions are catalyzed by the catalyst to react with the strong oxidizing gas to form chlorine, in the presence of the metal mineral type catalyst, a seed crystal does not need to be introduced, only the pH value is controlled, and shear enhancement is performed, so that iron-removed slag mainly in a goethite crystalline form having a small particle size can be efficiently generated, such that more fluorine ions are adsorbed, and thus efficient adsorptive fluorine removal is achieved. Therefore, by means of the method of the present invention, fluorine, chlorine and iron can be synchronously and efficiently removed. According to the present invention, fluorine, chlorine and iron can be removed from the solution in one step, and the method is an efficient, clean and energy-saving purification process.
Disclosed are a train compartment air adjustment and control method and apparatus, and a storage medium and a program product. A ventilation system is adjusted according to microbial diffusion situations among various test points, so as to reduce a microbial pollution index of an area where passengers are located. The method has a guide effect on railway train air quality adjustment and control. By means of the present invention, a mapping relationship between microbial pollution and the concentration of atmospheric pollutants is studied, the problem of the real-time performance of microbial detection can be effectively solved, and the real-time adjustment and control of microbial pollution in a train compartment are guaranteed.
A dynamic speed limit control method for a highway bottleneck section in a mixed traffic flow environment, comprising: S1, identifying a highway bottleneck section by using a traffic event detection device or a construction operation reporting system; S2, setting a speed limit control period and a model prediction period; S3, dividing a controlled section according to a region where the bottleneck section is located; S4, collecting traffic flow data of a highway section to be controlled by using a traffic flow monitoring device; S5, optimizing a cell transmission model according to the collected traffic flow data and traffic flow characteristics of a normal state, a speed-limited state, and a bottleneck section of a highway in a mixed traffic flow environment to obtain an improved cell-transmission model; and S6, selecting an optimal speed limit value according to the improved cell-transmission model, and publishing the optimal speed limit value by means of a dynamic speed limit control system.
G08G 1/09 - Dispositions pour donner des instructions variables pour le trafic
G08G 1/0967 - Systèmes impliquant la transmission d'informations pour les grands axes de circulation, p. ex. conditions météorologiques, limites de vitesse
89.
Application of Valdecoxib in preparation of medications for preventing and treating glaucoma
A preparation method of a medication associated with a PERK-ATF4-CHOP signaling pathway for preventing and treating glaucoma includes a step of administering VAL (Valdecoxib). The VAL is a regulating agent for the PERK-ATF4-CHOP signaling pathway. Through regulating the PERK-ATF4-CHOP signaling pathway, the VAL inhibits ERS (endoplasmic reticulum stress), so as to prevent and treat glaucoma. A medication composition for preventing and treating glaucoma includes VAL and a pharmaceutically acceptable carrier.
JiangXi University of Science and Technology (Chine)
Inventeur(s)
Du, Yong
Lv, Jian
Chang, Keke
Zhang, Weibin
Lou, Ming
Li, Zepeng
Lv, Yangqing
Abrégé
3Al, and an ordered strengthening phase is formed and is diffused and distributed in the binding phase, such that the rare earth hard alloy has a better high-temperature oxidation resistance, a better room-temperature fracture toughness and a better high-temperature bending strength than a conventional hard alloy.
C22C 29/08 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de carbures ou de carbonitrures à base de carbures mais ne contenant pas d'autres composés métalliques à base de carbure de tungstène
C22C 29/00 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures
C22C 1/051 - Fabrication de métaux durs à base de borures, de carbures, de nitrures, d'oxydes ou de siliciuresPréparation du mélange de poudres utilisé comme matière première à cet effet
91.
GEO-ACOUSTIC EVENT LOCATION METHOD AND INSTABILITY DISASTER EARLY WARNING METHOD BASED ON SAME, GEO-ACOUSTIC SENSOR, MONITORING SYSTEM, AND READABLE STORAGE MEDIUM
Sound signal when a wave generated by a geo-acoustic event source reaches any monitoring point (S1), constructing a theoretical propagation difference model and an observed propagation difference model of the waveform characterization quantity between monitoring points, to calculate a waveform characterization quantity difference value between two monitoring points (S2); and constructing an objective function based on the theoretical propagation difference model and the observed propagation difference model, and obtaining the location of the geo-acoustic event by means of inversion based on the objective function (S3). According to the geo-acoustic event location method, the arrival time, time domain parameters, spectral information, and waveform shape of the geo-acoustic signal when the wave generated by the geo-acoustic event source reaches any monitoring point are considered, then the non-uniformity of a propagation medium is comprehensively reflected, and the inversion precision of geo-acoustic event location is finally improved.
11 structure are dispersed and distributed in the matrix, and the nanoparticles and the BCC matrix maintain a complete coherent orientation relationship, so that the alloy has the compression strength remarkably improved, has the deformable capability enhanced, has the resistivity improved, has the temperature coefficient of resistance reduced, and has the mechanical and resistive performances comprehensively improved.
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
H05B 3/12 - Éléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur caractérisés par la composition ou la nature du matériau conducteur
Provided is a liver puncture outfit, which relates to an intrahepatic blood flow blocking instrument, and comprises a sleeve (1), the head end thereof being provided with a V-shaped clamping nozzle (11), the tail end thereof being provided with a sleeve ring (12), the outer edge of the sleeve (1) being provided with an air bag (13) disposed along the axial direction of the sleeve (1), the outer edge of the air bag (13) being provided with an expansion sleeve (14) having a smooth outer surface, the air bag (13) being capable of pushing the radius of the expansion sleeve (14) to change, and the sleeve (1) being provided with scales; and a core rod (2), comprising a rod body (21) with an angle instrument, a spine end (22) provided with a feedback element, and a holding part (23), the spine end (22) being arranged at one end of the rod body (21), and the holding part (23) being arranged at the other end of the rod body (21). The core rod (2) can be inserted into the sleeve (1) and be in smooth contact with the inner surface of the sleeve (1), the sleeve ring (12) and the holding part (23) are arranged in a limiting manner, and when the core rod (2) is inserted into the sleeve (1), the spine end (22) is higher than the V-shaped clamping nozzle (11), and the expansion sleeve (14) is used as a movable piece. In the process of puncturing the liver and establishing the channel, the expansion sleeve (14) extrudes the punctured liver by means of expansion to achieve the purpose of hemostasis, and the expansion sleeve (14), before exiting the core rod (2), can pass through the tunnel of the sleeve (1) and be accurately placed, so as to clip the blood vessel in front of the V-shaped clamping nozzle (11), thereby achieving blood flow blocking.
Disclosed in the present invention is a short-process method for preparing high-purity metal arsenic from arsenic-containing solid waste. The method comprises carrying out oxidative alkaline leaching on arsenic-containing solid waste in nonferrous metallurgy, so as to obtain an arsenic-containing alkaline leaching solution; sequentially adding into the arsenic-containing alkaline leaching solution a mixed magnesium-ammonium reagent consisting of a carboxyl and/or hydroxyl-containing water-soluble polymer organic matter, a magnesium compound and an ammonium compound, and a hydrophobic polymer organic matter having a periodic geometric structure, and stirring same for a reaction, so as to obtain organic matter-wrapped double arsenate crystals; and roasting the organic matter-wrapped double arsenate crystals, mixing same with carbon powder to carry out reduction roasting, and condensing and recovering metal arsenic from a flue gas. The method can not only achieve a safe disposal of the arsenic-containing solid waste in nonferrous metallurgy, but also implement resource utilization of arsenic components therein to prepare a high-purity metal arsenic product, and the method is simple, rapid, and highly-efficient, realizes low cost, and is satisfactory to industrial production.
A preparation method for nano tungsten carbide (WC) powder, specifically comprising the following steps: (1) sequentially dissolving a tungsten salt, an organic monomer, a cross-linking agent, and a carburant in deionized water to form a transparent solution, and then adding an initiator to prepare a gel; and (2) drying the gel and performing calcination to obtain nano WC powder. The WC powder prepared by the method has high quality, near-spherical morphology, and fine, uniform, and nanoscale particle size, thus avoiding a plurality of defects of powder prepared by other methods, such as an uneven particle size and irregular morphology.
A composite organic binder and methods for preparing and using the same are disclosed. The composite organic binder is made of the following components in mass percentages: 0.97-1.13% of polyethylene oxide and 98.87-99.03% of a papermaking sludge. The composite organic binder could solve the problems of high residual rate, poor pellet strength and low pellet iron grade existing in the process of producing iron ore pellets with bentonite and other binders. Results of examples show that green pellets have higher strength and shock temperature and the finished pellets have higher iron grade and excellent metallurgical properties, if the composite organic binder is used in an amount of 0.4-0.6% of the dry weight of iron ore concentrate.
− ions exists, the cathodic reduction peak of the working electrode can be specifically enhanced between 0 to −0.1 V, the goal of specific detection of bacteria can be achieved.
NATIONAL ENGINEERING RESEARCH CENTER OF HIGH-SPEED RAILWAY CONSTRUCTION TECHNOLOGY (Chine)
Inventeur(s)
Yin, Yapeng
Wang, Hanfeng
Zhao, Chongyu
Liu, Zhiwei
Abrégé
A flexible vortex generator for inhibiting vortex-induced vibration of bridges, comprising a fixed base (1) and a clamping sleeve disposed on the fixed base (1). A flexible part (3) is disposed on the clamping sleeve; one end of the flexible part (3) is detachably connected to the clamping sleeve, and the other end of the flexible part (3) is a free end and can freely swing along with wind. The flexible vortex generator does not need any external energy input, and an existing bridge device does not need to be changed; only self-adaptive deformation of the flexible part is utilized, a series of vortexes are induced by means of flapping of a flexible structure, the flow form of the surface of a bridge is changed, the wind resistance of the bridge is enhanced, and a vortex-induced vibration phenomenon of the bridge is remarkably inhibited.
A type of high-strength and ductile multicomponent precision resistance alloys and fabrication methods thereof are provided. The alloys are composed of the following components by atomic percentage: Ni 45-60%, Cr 15-30%, Fe 5-20%, Al 5-15%, Mn 3-5%, Cu 0.2-3%, Si 1-5%. Particularly, the sum of the atomic percentages of Mn, Cu and Si is ≤13% and ≥4.2%, the sum of the atomic percentages of Ni, Cr, Fe and Al is ≥70% and ≤95.8%, and the sum of the atomic percentages of all the components is 100%. The multicomponent alloys prepared by the methods exhibit face-cantered cubic matrix and possess high strength and good ductility; further, they have high resistivity and excellent resistivity stability in wide temperature ranges below 773 K.
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
C22C 1/02 - Fabrication des alliages non ferreux par fusion
100.
PRECIPITATION-HARDENED HIGH-ENTROPY ALLOY COMPONENT DESIGN AND PREPARATION METHOD BASED ON DIFFUSION MULTIPLE TECHNOLOGY
The present invention relates to the field of high-entropy alloys, and relates to rapid design and preparation of a novel precipitation-hardened high-entropy alloy by using a diffusion multiple technology. According to the present invention, a high-entropy alloy and/or a medium-entropy alloy are/is prepared into a diffusion multiple; then, a diffusion experiment is performed to obtain a single-phase solid solution diffusion layer; the components of the diffusion layer are tested to obtain the content range of each element in the diffusion layer; the components of the precipitation-hardened high-entropy alloy are obtained according to the content range and type design of each element in the diffusion layer; the regional typical components of the precipitation-hardened high-entropy alloy obtained on the basis of high-throughput screening are selected for alloy smelting, homogenization treatment, cold rolling, solid solution treatment, and aging treatment, so as to prepare a precipitation-hardened high-entropy alloy having excellent strength and plasticity combination. According to the present invention, a component range of the precipitation-hardened high-entropy alloy is quickly screened by using the diffusion multiple technology, and a new product having excellent performance is prepared. The present invention provides a new idea for rapid design of the precipitation-hardened high-entropy alloy, and provides necessary conditions for industrialization of the precipitation-hardened high-entropy alloy.
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