Disclosed is a digital twinning method for monitoring an operation state of a tower of a wind turbine generator system online. The method includes: 1) constructing a simplified model of the tower of the wind turbine generator system, and discretizing the simplified model according to a finite element method to obtain a finite element model; 2) reducing an order of the finite element model of the tower according to proper orthogonal decomposition, analyzing precision of a reduced-order model under different orders, and selecting the reduced-order model having a smallest reduced order as a final reduced-order model on the premise that the precision satisfies actual engineering requirements; and 3) programming upper computer software in a computer, deploying the reduced-order model to the upper computer software, further building a physical entity of the tower, and monitoring a stress and a strain of the physical entity online through the reduced-order model.
G06F 119/02 - Reliability analysis or reliability optimisationFailure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
2.
17β-HYDROXYSTEROID DEHYDROGENASE MUTANT AND USE THEREOF IN PREPARATION OF STEROID HORMONE
Provided are a 17β-hydroxysteroid dehydrogenase mutant and a use thereof in preparation of a steroid hormone boldenone. 17β-hydroxysteroid dehydrogenase derived from Brettanomyces naardenensis (17β-HSDbn) is mutated to obtain mutants 17β-HSDbnN222W, 17β-HSDbnG151Y, and 17β-HSDbnF212I which respectively undergo heterologous expression in recombinant Escherichia coli, and the enzyme activity thereof is respectively improved by 2.34 times, 1.79 times, and 1.71 times compared with that of the wild-type 17β-HSDbn. The mutants are further applied to Mycobacterium sp. for heterologous expression, constructed genetically engineered bacteria Mn B-3805△kMS pMV307-17β-HSDbnN222W, Mn B-3805△kMS pMV307-17β-HSDbnG151Y, and Mn B-3805△kMS pMV307-17β-HSDbnF212I are converted for 120 h to respectively produce 3.54 g/L, 3.84 g/L, and 3.05 g/L of boldenone, and the yield is respectively increased by 45.08%, 57.37%, and 25.0% compared with that of an original strain overexpressing the wild-type 17β-HSDbn. The present invention is more suitable for industrial application, can reduce the production cost of boldenone, and further improves the production efficiency.
Provided is a multienzyme complex assembly system for producing L-cysteine at high yield. A reasonable metabolic modification target is determined by means of screening of critical pathway enzymes CysE, CysM, NrdH, and CysK in a L-cysteine synthesis pathway and L-cysteine transport-related channel proteins EamA and EamB, two affinity short peptides RIDD and RIAD are respectively fusion-expressed with the critical pathway enzymes and the channel proteins, and by means of combination optimization, the assembly of the critical pathway enzymes and the channel proteins is implemented, thereby accelerating the reaction rate of the L-cysteine synthesis pathway, improving the metabolic flux, and enhancing the degree of aggregation of products in the vicinity of a cell membrane. On the basis of the construction and application strategy of the multienzyme complex assembly system, further provided are a genetically engineered bacterium for producing L-cysteine at high yield and a construction method therefor, implementing efficient synthesis of L-cysteine.
The present invention belongs to the technical field of purification and particularly relates to a purification method for removing arsenic from an antimony chloride solution. The method comprises: 1) adding a copper-antimony alloy to a crude arsenic-containing antimony chloride solution to be treated in a protective atmosphere and reacting to obtain a low-arsenic antimony chloride solution; and 2) distilling and concentrating the low-arsenic antimony chloride solution to obtain a high-purity antimony chloride solution. The present invention addresses the technical challenge of arsenic impurity removal during the preparation of high-purity antimony, distillation is carried out under low-temperature conditions, the operation is simple, the energy consumption is low, the preparation process flow is simple, the production efficiency is high, the implementation is easy, no industrial pollution is generated, and the method is suitable for industrialization.
The present disclosure relates to a device and process for preparing sebacic acid through electromagnetic induction heating coupled with dry constant-temperature alkaline hydrolysis. The device includes an electromagnetic heating cylinder and a reaction kettle arranged in the electromagnetic heating cylinder, heat storage pellets fill space between the reaction kettle and the electromagnetic heating cylinder, and the heat storage pellets adhere to an inner wall of the electromagnetic heating cylinder and an outer wall of the reaction kettle. The upper end of the reaction kettle is provided with a feeding port, a gas outlet and a temperature measuring port, the reaction kettle is also provided with a stirring device, a lower portion of the reaction kettle is provided with a discharging port, and the feeding port, the gas outlet, the temperature measuring port and the discharging port all extend out of the thermal insulation cotton.
C07C 51/09 - Preparation of carboxylic acids or their salts, halides, or anhydrides from carboxylic acid esters or lactones
B01J 8/08 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles
B01J 8/10 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles
A flange integrated tuned mass damper, including a main shaft structure, a plurality of wire rope isolators, and a mass ring. Flange plates are installed on the main shaft structure, and the mass ring is located below and connected to the flange plates through the plurality of wire rope isolators uniformly distributed in a circumferential direction. The plurality of wire rope isolators are uniformly distributed outside the main shaft structure in the circumferential direction, and the wire rope isolators directly carries the mass ring and are in a tensile deformation state, with both spring and damper functions. The wire rope isolators can bear tensile, compressive, rolling, and shearing loads, thus ensuring the degree of freedom of the mass ring in any horizontal direction.
The present invention relates to a phosphorescent material and the use thereof, and more particularly to a cyclic tetradentate metal platinum (II) complex phosphorescent material and the use thereof. The present invention provides a cyclic tetradentate metal platinum (II) complex phosphorescent material based on 8-phenylquinoline, benzoxazole, and phenoxy groups. It is a novel tetradentate platinum (II) complex with a 6/6/6 metal fused ring structure. The phosphorescent material of the tetradentate fused ring structure system of the present invention has the characteristics of easy modulation of HOMO and LUMO orbital energy levels and strong luminescence. It has good chemical stability and thermal stability and is easy to fabricate evaporation-type OLED devices. The organic electroluminescent device fabricated using the compound of the present invention as a light-emitting layer can reduce the start-up voltage and remarkably improve the external quantum efficiency.
The present disclosure belongs to the technical field of purification, and particularly relates to a method for purifying an antimony chloride solution through arsenic removal. The method includes: 1) adding copper-antimony alloy into a crude arsenic-containing antimony chloride solution to be treated in a protective atmosphere to obtain an antimony chloride solution containing low-concentration arsenic impurities after a reaction; and 2) performing distillation and concentration on the antimony chloride solution containing low-concentration arsenic impurities to obtain a high-purity antimony chloride solution. According to the present disclosure, the technical difficulty of removing impurity arsenic in a preparation process for high-purity antimony is solved, distillation is carried out under the condition of a low temperature, the operation is simple and low in energy consumption, and the technological process for preparation is simple, high in production efficiency, easy to realize, free of industrial pollution and therefore, suitable for industrialization.
Provided is a double-helix scheduling method for soundcard buffers during sound recording and reproduction, which belongs to the technical field of multimedia communication. The method includes steps as follows: step 1: preparing N frame buffers for each process of the sound recording and the sound reproduction; step 2: adding N sound recording buffers in a sound card, and starting the sound recording; and writing N sound reproduction buffers in the sound card one by one, then starting the sound playing; step 3: writing sound reproduction buffers in the sound card in a sound recording callback function; step 4: adding sound recording buffers in a sound reproduction callback function; and step 5: finishing the sound recording and the sound reproduction.
A method for increasing the production of Erinacine A in liquid fermentation of Hericium erinaceus is provided. Through screening of exogenous factors, methyl violet and/or rotenone are selected as the exogenous factors, which ultimately greatly increases the Erinacine A content in the liquid fermentation of Hericium erinaceus, with important production and application value. The liquid fermentation method has high efficiency and can significantly increase the content of Erinacine A in the liquid fermentation process, breaking through the synthetic barrier and having the characteristics of large increase amplitude and fast effect. Compared with other current research on liquid fermentation of Hericium erinaceus to produce Erinacine A, the method for increasing the liquid fermentation production of Erinacine A from Hericium erinaceus is at the highest level, with important research significance.
The present invention provides a cyclic tetradentate metal platinum complex phosphorescent material based on pyridine heterocycle, benzoxazole, and carbazole derivatives. It is a novel tetradentate platinum (II) complex with a 6/6/6 metal fused ring phenoxy coordination structure. The phosphorescent material of the N—C—N—N tetradentate fused ring structure system of the present invention have the characteristics of easy modulation of HOMO and LUMO orbital energy levels and strong luminescence. It has good chemical stability and thermal stability, and is easy to fabricate evaporation-type OLED devices.
The present invention is in the field of organic electroluminescence, and specifically relates to a fused ring carbazole tetradentate metal platinum (II) complex and use thereof. In the present invention, a tetradentate metal platinum (II) complex phosphorescent material is obtained by introducing a five-membered heterocyclic system such as benzofuran or benzothiophene at the 5, 6-positions of carbazole. Increasing the ratio of the local state (LE) in the excited triplet state of the cyclic tetradentate platinum (II) complex leads to a lower shoulder peak, which improves the luminescence color purity of the materials, which in turn increases device lifetime. The materials provided by the present invention all have good chemical stability and thermal stability and are easy to fabricate an evaporation-type OLED device.
The present invention belongs to the field of organic electroluminescence, and specifically relates to a ring-fused carbazole tetradentate platinum (II) complex and the use thereof. In the present invention, a five-membered heterocyclic system such as benzofuran or benzothiophene is introduced to position 5,6- of carbazole to obtain a tetradentate platinum (II) complex phosphorescent material. The composition proportion of a locally-excited state (LE) in a triplet state excited by the ring-fused tetradentate platinum (II) complex is increased, thereby enabling same to have a low shoulder peak, and improving the color purity of the molecular luminescence of the material. Therefore, the lifetime of a device is prolonged. The material provided by the present invention has a very good chemical stability and thermal stability, which facilitates the preparation of an evaporation-type OLED device. Both the current efficiency and the lifetime of an organic electroluminescence device fabricated by using the compound of the present invention as a luminous layer are obviously improved, and the lighting voltage thereof is significantly reduced. After being combined with a fluorescent doping material, the transport of holes and electrons can be balanced; therefore, the energy transfer between a host and a guest is more efficient, and the photochromic purity of a device can be improved.
The present invention belongs to the field of organic electroluminescence, and specifically relates to a tetradentate cyclometalated platinum (II) complex based on pyridylcarbazole and an application thereof, and an electronic device. In the present invention, a charge distribution in an excited state of a compound is improved by means of introducing a substituent group at an appropriate position of a ligand of the compound, such that there are more metal-to-pyridocarbene charge transfer states (3MLCT) in an excited state of a material composed of the compound, which is conductive to improving a radiation rate, thereby extending the service life of a device. The material provided has good chemical stability and thermal stability, and is easily prepared into evaporated OLED devices. An organic electroluminescent device manufactured by using the compound of the present invention as a light-emitting layer has significantly improved current efficiency and service life and a significantly reduced turn-on voltage. After the compound is combined with a fluorescent doped material (a boron-containing compound), transmissions of holes and electrons can be balanced, such that energy transfer between a host and a guest is more efficient, and the light color purity of a device can be improved.
The present invention relates to the field of organic electroluminescence, and in particular to a fused-ring carbazole tetradentate metal platinum (II) complex and a use thereof, and an electronic device. According to the present invention, the interaction between molecules is reduced by means of the introduction of diphenyl, and a fused-ring carbazole system is introduced at different positions of carbazole to improve the component proportion of a localized state (LE) in an excited triplet state of a cyclic tetradentate platinum (II) complex, so that the cyclic tetradentate platinum (II) complex has a low shoulder peak to improve the purity of luminescence of material molecules. Materials involved in the present invention all have good chemical stability and thermal stability, and are easy to prepare evaporated OLED devices. The combination with a fluorescent doping material can balance transport of holes and electrons, and energy transfer between a subject and an object is more efficient. An organic electroluminescent device manufactured by using the compound of the present invention as a luminous layer has markedly improved current efficiency, markedly prolonged service life, and a markedly reduced turn-on voltage. In particular, the joint use with phosphorescent-sensitized boron-containing compounds can improve the purity of luminescence of devices.
Disclosed in the present invention are a portable measurement device capable of accurately measuring the CTC value of activated carbon, and a measurement method thereof. The device of the present invention comprises an air drying assembly, a flow meter, an organic matter steam bubbling bottle containing carbon tetrachloride inside, an adsorption tube filled with activated carbon, an electronic balance and a computer. The air drying assembly is used for drying air and transferring same to the flow meter, the organic matter steam bubbling bottle and the adsorption tube; a first semiconductor refrigeration piece is arranged at the bottom of the organic matter steam bubbling bottle; the first semiconductor refrigeration piece is used for cooling the organic matter steam bubbling bottle to keep same at a low temperature; and the electronic balance is used for recording mass changes of the adsorption tube in real time and transmitting mass change data to the computer. The device provided by the present application can fast and efficiently measure the carbon tetrachloride adsorption rate of activated carbon, the test result having high accuracy and having an error within 5% compared with a test value obtained by means of the national standard method, thus being capable of fast reflecting the adsorption capacity of activated carbon, and having a relatively high industrial practical application value.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
17.
METAL PLATINUM (II) AND PALLADIUM (II) COMPLEX, ORGANIC LIGHT-EMITTING DEVICE AND DISPLAYING OR LIGHTING APPARATUS
The present invention provides a metal platinum (II) and palladium (II) complex, an organic light-emitting device and a display or lighting apparatus, wherein a structure of the metal platinum (II) and palladium (II) complex is as shown in the following formula (I).
The present invention provides a metal platinum (II) and palladium (II) complex, an organic light-emitting device and a display or lighting apparatus, wherein a structure of the metal platinum (II) and palladium (II) complex is as shown in the following formula (I).
The present invention provides a metal platinum (II) and palladium (II) complex, an organic light-emitting device and a display or lighting apparatus, wherein a structure of the metal platinum (II) and palladium (II) complex is as shown in the following formula (I).
A cyclometalated platinum (II) and palladium (II) complex based on a tetradentate ligand according to the present invention contains molecules having relatively strong rigidity, can effectively inhibit non-radiative transition generated by molecular vibration, and has relatively high quantum efficiency and luminous intensity. Meanwhile, a tetradentate phosphorescent metal complex of the present invention is a novel parent nucleus structure, which may be developed into a series of efficient phosphorescent metal platinum complexes. The present invention has excellent application prospects in the fields of OLED display and lighting and the like, especially in the field of light-emitting layer materials.
The present invention belongs to the field of organic electroluminescence, and specifically relates to a pyridinocarbene-based tetradentate cyclometalated platinum (II) complex, and a use thereof. Compared with a benzocarbene platinum (II) complex, pyridinocarbene has a stronger electron-withdrawing ability, so that an excited state has more metal-to-pyridinocarbene charge transfer (3MLCT) states, which helps to improve a radiation rate thereof, and thus extend device service life. The material provided by the present invention has good chemical stability and thermal stability, and is easy to prepare in a vapor-deposited OLED device. An organic electroluminescent device made using the compound of the present invention as a light-emitting layer has significant improvements in current efficiency and service life, and significantly reduces lighting voltage. When combined with a fluorescent doping material (a boron-containing compound), it can balance hole and electron transport, make energy transfer between a host and a guest more efficient, and improve the light color purity of the device.
A method for chemical-biological cascade synthesis of L-phosphinothricin is carried out as follows: 3-(methylethoxyphosphinyl) ethyl propionate is synthesized by addition reaction from diethoxymethylphosphine and acrylic acid, then a condensation reaction is carried out with 3-(methylethoxyphosphinyl) ethyl propionate and sodium ethoxide as reactants, then the product is subjected to a hydrolysis reaction with diethyl oxalate to synthesize 4-(hydroxymethylphosphinyl)-2-oxobutyric acid, and finally, L-phosphinothricin is catalytically synthesized by taking 4-(hydroxymethylphosphinyl)-2-oxobutyric acid as a raw material, and using highly active and stable wet cells co-expressing phsophinothricin dehydrogenase and alcohol dehydrogenase or co-expressing a phsophinothricin dehydrogenase mutant and alcohol dehydrogenase as a biocatalyst, thereby solving the problems of existing L-phosphinothricin synthesis being tedious, low asymmetric amination reduction activity and poor stability.
A semantic image restoration method based on GAN networks, comprising: carrying out preprocessing and data enhancement on a semantic tag image and an original image in an image data set; using two GAN networks to form a cyclic generative adversarial process, wherein the network structure comprises two generators and two discriminators, each generator uses a U-Net network structure, and each discriminator uses a PatchGAN network structure; and the generators and the discriminators being subjected to iterative learning, step-by-step evolution, and training until dynamic balance is achieved. According to the present invention, when paired data sets are not used, an image of a semantic tag domain transmitted after segmentation is restored into a real original image for the naked eye, thereby overcoming the problem of the limitation of a need for paired data sets in the traditional image restoration technology.
A genetically engineered bacterium that produces D-pantothenic acid and a construction method therefor, and the use of the engineered bacterium in the preparation of D-pantothenic acid by means of microbial fermentation. In the present invention, mainly by means of: (1) increasing the copy number of key genes in the pantoic acid synthesis pathway in Escherichia coli organisms to further make carbon flux flow to the synthesis of D-pantothenic acid, and (2) in order to keep enhancing the flow of carbon flux to the synthesis of D-pantothenic acid, negatively regulating a transcription factor by means of weakening the nitrogen limitation and activating glycolytic front-end genes to pull the carbon flow so as to save phosphoenolpyruvic acid and reduce the central carbon flow that enters TCA, an engineered strain for producing D-pantothenic acid with no plasmid or antibiotic addition is obtained. Finally, the titer of D-pantothenic acid in the shake flask is increased by 87.2% compared to that of the starting strain, and reaches 5.43 g/L. After fermentation in a 5-L fermentation tank for 84 hours, the yield of D-pantothenic acid can reach 94.2 g/L.
22x22-NO mixed flue gas, which is then passed into an absorption bed filled with an absorption material, to absorb and remove nitrogen oxides; the absorption material comprises a porous solid phase material and an absorption liquid membrane loaded thereon, a mass ratio (solid-liquid ratio) of the porous solid phase material to the liquid membrane being 1: 0.05-10; the liquid membrane is primarily composed of three parts: a pH value regulator, a liquid membrane forming agent and a liquid membrane stabilizer, the pH value regulator comprising an organic base and an inorganic base, the liquid membrane stabilizer comprising urea, and the liquid membrane forming agent comprising water and C1-C4 lower alcohols.
The present application belongs to the field of organic electroluminescence and specifically relates to a fluorinated tetradentate platinum (II) complex, an electronic device, an equipment and application of the fluorinated tetradentate platinum (II) complex. The present application provides a fluorinated tetradentate platinum (II) complex, which has a structure as shown in Formula (I) or Formula (II):
The present application belongs to the field of organic electroluminescence and specifically relates to a fluorinated tetradentate platinum (II) complex, an electronic device, an equipment and application of the fluorinated tetradentate platinum (II) complex. The present application provides a fluorinated tetradentate platinum (II) complex, which has a structure as shown in Formula (I) or Formula (II):
The present application belongs to the field of organic electroluminescence and specifically relates to a fluorinated tetradentate platinum (II) complex, an electronic device, an equipment and application of the fluorinated tetradentate platinum (II) complex. The present application provides a fluorinated tetradentate platinum (II) complex, which has a structure as shown in Formula (I) or Formula (II):
In Formula (I) or Formula (II), F1 represents one or more F substitutions on the benzene ring where it is (they are) located, where n is a positive integer from 1 to 5; R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, N, a C1-C30 alkyl, a C1-C30 cycloalkyl, and a C6-C60 aryl. The compound has good chemical stability, which can improve and balance the transport of holes and electrons, making energy transfer between the host and guest more efficient.
Disclosed in the present invention is a health state assessment method for equipment based on a knowledge graph attention network, includes: steps: 1) constructing a graph data model which can comprehensively reflect change of a health state of the equipment by deeply integrating association relationships of equipment components, monitoring data dependence relationships and priori information, etc. by means of a knowledge graph and by combining with domain priori knowledge; 2) extracting feature information of the health state knowledge graph by using a graph attention network, and obtaining a target node vector representation which accurately reflects the health state of the equipment by means of learning; and 3) making a health state representation vector of the equipment pass through a fully connected layer to obtain a health state classification prediction probability, and performing training to reducing a loss value relative to a true label, thereby obtaining a health state assessment result.
The disclosure belongs to the field of organic electroluminescence, and particularly relates to a fluorine-containing tetradentate cyclometalated platinum (II) complex, an electronic device and application thereof. The provided tetradentate cyclometalated platinum (II) complex has a structure shown in formula (I) or formula (II):
The disclosure belongs to the field of organic electroluminescence, and particularly relates to a fluorine-containing tetradentate cyclometalated platinum (II) complex, an electronic device and application thereof. The provided tetradentate cyclometalated platinum (II) complex has a structure shown in formula (I) or formula (II):
in the formula (I) or formula (II), Fn indicates that there are one or more F substituted on a benzene ring where it is located, where n is a positive integer from 1 to 5. The compound according to the disclosure has good chemical stability, can improve and balance transport of holes and electrons, and makes energy transmission between donors and acceptors more efficient, which is specifically indicated by improvement of current efficiency and service life of an organic electroluminescent device with the compound or composition according to the disclosure, which has great application prospects in the field of OLED display and lighting.
Bimetallic metal-organic frameworks nanosheet based on zeolite imidazole framework/materials of institute Lavoisier topology and preparation method and application thereof
Zhejiang Marine Fisheries Research Institute (China)
Inventor
Qin, Lei
Mao, Xiaoyan
Li, Tiejun
Tan, Yingyu
Liu, Wenjie
Jin, Lei
Abstract
A BMOFs nanosheet based on a ZIF/MIL topology, and a preparation method and an application thereof are provided. The preparation method includes dispersing a MOF material of a ZIFs series in an organic phase, then adding an aqueous phase to obtain a mixture; and adding a MOF material of a MILs series into the mixture, sealing, standing for 1-5 days, filtering, performing centrifugal washing, drying, and performing acetone ultrasonic exfoliation to obtain the BMOFs nanosheet based on the ZIF/MIL topology. The preparation method is simple to operate and moderate in conditions, and the prepared ZIF/MIL BMOFs nanosheet has good electrocatalytic activity and stability in an OER.
Eco-Environmental Science Research & Design Institute of Zhejiang Province (China)
Inventor
Qin, Lei
Mao, Xiaoyan
Tan, Yingyu
Huang, Fei
Zhang, Liang
Zhang, Yu
Xiang, Xingwei
Abstract
Provided are a directionally assembled flexible MOF hydrogel, a preparation method and a proton conduction application thereof. The prepared method includes: mixing a transition metal salt and L-Glu to prepare a mixed aqueous solution; putting the mixed aqueous solution into a reaction kettle to react at a constant reaction temperature in a range from 80° C. to 200° C. for a reaction period of 1-5 hours, to thereby obtain a reacted aqueous solution; cooling the reacted aqueous solution to room temperature; and washing the reacted aqueous solution after the cooling with deionized water and absolute ethanol, to thereby obtain the directionally assembled flexible MOF hydrogel, L-Glu-M (M═Zr, Fe, or Co), for sealing and storing. The preparation method is simpler and easier to operate, and the directionally assembled flexible MOF hydrogel has great prospects in the field of proton conducting technologies.
Disclosed in the present invention is a complex network attack detection method based on cross-host abnormal behavior recognition, comprising the following steps: 1) first, collecting host kernel log data to construct an intra-host association graph, then extracting features by using a graph convolutional network, and finally, detecting an abnormal node in the intra-host association graph by using an automatic coding machine; 2) first, constructing an inter-host interaction graph by using network traffic log data, then training a prediction model on the basis of an inter-host interaction graph sequence, and finally, detecting an abnormal edge in the inter-host interaction graph according to a predicted difference; and 3) first, constructing a cross-host abnormal association graph according to intra-host and inter-host anomaly detection results, then propagating an anomaly score by using a PageRank algorithm, and finally confirming an attacked host on the basis of the anomaly score. According to the present invention, by means of joint cross-host network attack detection, a malicious operation event in a host and a transverse movement event between hosts are mutually authenticated, so that the false alarm rate can be effectively reduced.
The present invention provides a metal platinum complex, an organic optoelectronic device, and a display or lighting apparatus. A new 6/5/7 metal fused-ring structure is developed by using 8-phenylquinoline structure and a derivative thereof, and benzo five-membered heterocycles and a phenoxy oxygen tetradentate ligand, to obtain a new class of tetradentate cyclometalated platinum complex phosphor material. A chemical formula of the phosphor material is shown as the general formula (1):
The present invention provides a metal platinum complex, an organic optoelectronic device, and a display or lighting apparatus. A new 6/5/7 metal fused-ring structure is developed by using 8-phenylquinoline structure and a derivative thereof, and benzo five-membered heterocycles and a phenoxy oxygen tetradentate ligand, to obtain a new class of tetradentate cyclometalated platinum complex phosphor material. A chemical formula of the phosphor material is shown as the general formula (1):
Disclosed in the present disclosure are a catalytic combustion type hydrogen sensor and a manufacturing method therefor. The catalytic combustion type hydrogen sensor includes a catalytic combustion element and a compensation element, where both the catalytic combustion element and the compensation element are planar film structures taking mica sheets as substrates, and platinum resistors and aluminum oxide film carriers are sequentially adhered on surfaces of the mica sheets. A layer of palladium nanoparticles are further adhered to a surface of the aluminum oxide film carrier of the catalytic combustion element as a catalyst. According to the present disclosure, the ultra-thin mica sheet is used for replacing a silicon-based material to manufacture the film type catalytic combustion type hydrogen sensor, such that a complicated and high-cost micro-electromechanical system (MEMS) technology is avoided, and the flexible characteristic of the ultra-thin mica sheet endows the sensor with extremely high robustness.
G01N 27/16 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
31.
CENTRAL CHIRALITY INDUCED HELICAL CHIRAL TETRADEMTATE CYCLOMETALATED PLATINUM (II) COMPLEX, ELECTRONIC DEVICE AND APPLICATION THEREOF
The disclosure relates to the technical field of preparation of circularly polarized luminescence materials, in particular to a central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex, an electronic device and application thereof. The central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex provided in the disclosure has a general structure as shown in formula (I) or (I′) in which (I) and (I′) are enantiomers to each other:
The disclosure relates to the technical field of preparation of circularly polarized luminescence materials, in particular to a central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex, an electronic device and application thereof. The central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex provided in the disclosure has a general structure as shown in formula (I) or (I′) in which (I) and (I′) are enantiomers to each other:
The disclosure relates to the technical field of preparation of circularly polarized luminescence materials, in particular to a central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex, an electronic device and application thereof. The central chirality induced helical chiral tetradentate cyclometalated platinum (II) complex provided in the disclosure has a general structure as shown in formula (I) or (I′) in which (I) and (I′) are enantiomers to each other:
Helical chiral metal complex molecules can autonomously induce a whole tetradentate ligand to coordinate with metal ions in a less sterically hindered manner by means of a central chiral fragment La in the tetradentate ligand, to form an optically pure helical chiral metal complex-based circularly polarized luminescence material, without need for chiral resolution. Moreover, the material has high chemical stability and thermal stability, and has important applications in circularly polarized luminescence elements.
An electric boiler device based on utilization of residual energy of an elevator includes a heat storage module, an electric heating module and a control module. A heat storage water tank of the heat storage module is replenished with water from a tap water pipe network, and a preheating unit of the heat storage module converts the residual energy of the elevator into heat energy of the heat storage water tank by using an energy consumption resistor. The control module replenishes a heating water tank with water by delivering preheated water to the electric heating module according to a water level of the heating water tank, and controls a heating unit of the electric heat module to heat the heating water tank according to a user-set temperature, and heated hot water is provided through a user water supply pipe network.
F24D 19/10 - Arrangement or mounting of control or safety devices
B66B 1/30 - Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear
F24D 3/08 - Hot-water central heating systems in combination with systems for domestic hot-water supply
F24D 19/08 - Arrangements for drainage, venting or aerating
33.
ONLINE PRODUCT DEFECT DETECTION APPARATUS AND METHOD IN HERMETIC COMPRESSOR MANUFACTURING
An online product defect detection apparatus and method in hermetic compressor manufacturing. The online detection apparatus uses a multi-channel time-frequency–space feature fusion deep learning algorithm to perform information fusion on time-frequency features of vibration signals in three directions of a housing of a complete hermetic compressor; time-frequency features and spatial features are learned and extracted to solve the identification and classification of a manufacturing defect of the hermetic compressor; and a complete compressor defect is fed back to front-end part machining and assembling stages in real time during intelligent compressor manufacturing, so as to establish an intelligent closed loop for hermetic compressor manufacturing. In addition, the online detection apparatus has relatively high degree of intellectualization, can automatically complete the whole defect detection process under a production takt of a compressor manufacturing line, and compiles statistics and performs feedback on data such as the type and proportion of a product defect, the number of defective products, and the defective rate of products during a manufacturing process, thereby significantly improving the manufacturing efficiency of a hermetic compressor production line.
A pile-supported embankment model test device and method under an action of rainfall and dry-wet cycle comprises a unit model box system with adjustable model box height, a vertical reinforcement system of a model box unit block, a transverse reinforcement system of the model box unit block, a rainfall control device, and a drying system combined with voltage control and resistance wire height control; wherein the vertical reinforcement system of the model box unit block and the transverse reinforcement system of the model box unit block reinforce the unit model box system vertically and horizontally; through the rainfall control pipe and rainfall control valve of the rainfall control device, the rainwater conveying pipe can be watered at the same time to simulate rainfall. The device simulates the natural environment rainfall and drying process to study the working behavior of pile-supported embankment under the action of rainfall and dry-wet cycle.
A denoising method based on a multiscale distribution score for a point cloud includes: constructing a two-layer network model based on multiscale perturbation and point cloud distribution, where the two-layer network model includes a feature extraction module for extracting a feature of the point cloud and a displacement prediction module for predicting a displacement of a noise point; constructing a point cloud noise model for improving a denoising effect and retaining a sharp feature and avoiding reducing quality of point cloud data; extracting a global feature h by inputting the point cloud data into the feature extraction module; iteratively learning the displacement of the noise point by the displacement prediction module according to a feature obtained by the feature extraction unit; and defining a loss function of network training, and completing convergence under the condition that the loss function reaches a set threshold or a maximum number of iterations.
Disclosed in the present invention are a solid inverse catalyst, and a preparation method therefor and the use thereof in the catalysis of low-temperature carbon dioxide methanation. In the present invention, a single metal or alloy component with hydrogen dissociation capacity is taken as a carrier phase, metal oxide nanoparticles capable of adsorbing and activating carbon dioxide are taken as a load phase, and the interface of the prepared catalyst is formed by loading the oxide nanoparticles onto the surface of the metal, which is different from the traditional way of loading a metal onto the surface of an oxide carrier, such that the prepared catalyst is a new-type solid inverse catalyst. Under certain reaction conditions, the prepared inverse catalyst of the present invention is applied to a carbon dioxide methanation reaction, and has good properties exceeding those of most reported catalysts under the conditions of a low temperature of 200ºC or less and a high reaction space velocity (127,000 h-1CH4catcat/h, and the catalyst shows good stability in 1500-hour long-time operation.
Disclosed in the present invention is an electrochemical reduction method for a high-concentration indigo blue without an additional medium and chemical reducing agent. Using an electrolytic separator tank as a reactor, an alkaline aqueous solution containing indigo blue and indigo white as a catholyte, an alkaline aqueous solution as an anolyte, a three-dimensional porous carbon-based conductive material as a cathode, and nickel, stainless steel or a nickel-containing alloy as an anode, a direct current or a pulse current sequentially passes through the anolyte, a separator and the catholyte from the anode to the cathode to electrochemically reduce indigo blue in the catholyte into indigo white. The present invention achieves the electrochemical reduction of indigo blue into indigo white with a high efficiency (the current density being greater than or equal to 6 A/dm2, the high-current efficiency being greater than or equal to 71%, and the conversion rate being greater than or equal to 94%) under the premise of not using an additional medium; the reduction reaction is conducted without hydrogen under normal pressure; and the use amount of sodium hydrosulfite is greatly reduced.
Disclosed in the present invention is a method for improving the efficiency of electrolytic synthesis of 4-amino-3,6-dichloropicolinic acid. The method comprises: carrying out an electrolytic reaction by means of a diaphragm electrolyzer, with an aqueous solution containing 0.8-2.0 mol/L of 4-amino-3,5,6-trichloropicolinic acid as a catholyte, an aqueous alkali metal hydroxide solution as an anolyte, silver as a cathode and a nickel-based material as an anode; and after the electrolytic reaction is completed, separating and purifying the catholyte to obtain 4-amino-3,6-dichloropicolinic acid. By means of the catholyte and the electrolysis method of the present invention, the current efficiency and the current density are higher, the current efficiency being increased from 42.6% to 62.2-62.6%, and the average current density being increased from 3.3 A/dm2to 6.8-9.0 A/dm2; and less wastewater is discharged from the production of a 4-amino-3,6-dichloropicolinic acid product, achieving a decrease from 13 cubic meters to 3.7-4.7 cubic meters for per ton of the product.
Provided in the present invention is a method for preparing diamond on the basis of graphite under normal pressure. The method comprises: depositing tantalum atoms, which escape from a tantalum wire during the heating thereof in an HFCVD system, on a graphite sheet, and converting graphite into diamond under normal pressure. The method has the advantages of low cost, energy conservation, environmental protection, etc.; and the method has low requirements for equipment, involves a simple process and is easy to operate.
The present invention provides a high radiation rate platinum complex based on 1,8-substituted carbazole and an application thereof. The luminescent material of the present invention can efficiently control the excited state properties of material molecules by introducing substituents at 1-, 8-position of carbazole, which increases components of metal-to-ligand charge transfer state (MLCT), and improves the intersystem crossing rate of molecules; at the same time, the introduction of substituents at the 1-, 8-position of carbazole can increase the dihedral angle thereof with a pyridine ring, which can improve the rigidity of molecules, effectively reduce the energy consumed by the vibration and rotation of the carbazole ring in the molecules, and reduce non-radiative attenuation. The described factors can jointly increase the radiation rate of material molecules and shorten the lifetime of the excited state.
A gas-liquid reactor is provided. The gas-liquid reactor includes a reactor housing, where an outer side of the reactor housing is provided with a heat exchange jacket device, and the reactor housing is provided with a liquid phase inlet, a gas phase inlet and a gas-liquid phase outlet, and is internally provided with an electric dispersion gas distributor in communication with the gas phase inlet, and the electric dispersion gas distributor is provided with needle electrodes; and row tubes are arranged above the electric dispersion gas distributor, lower ends of the row tubes are grounded, and upper ends of the row tubes are located below the gas-liquid phase outlet. The gas-liquid reactor is configured to continuously produce gas-liquid reaction, and a gas-phase material is dispersed by utilizing the needle electrodes to form micrometer-scaled bubbles to be premixed with a liquid-phase material, and then stably flows through the row tubes.
B01J 19/18 - Stationary reactors having moving elements inside
42.
GREEN CONSTANT-TEMPERATURE ULTRA-LOW-TEMPERATURE IMMERSION FREEZING METHOD BASED ON COUPLING BETWEEN NON-FREEZING SOLUTION REFRIGERATING MEDIUM AND DRY ICE
A constant-temperature immersion freezing method based on coupling between a non-freezing solution refrigerating medium and dry ice, comprising the following steps: 1) cleaning a food material, and wrapping same by using a plastic wrap; 2) pre-cooling the food material to an internal temperature of 2±0.5°C by using slurry ice, and recording temperature changes of the food material by using a temperature recorder; 3) cooling the non-freezing solution by using a low-temperature constant-temperature reactive bath device, cooling to a set temperature of -45°C, and recording temperature changes by using the temperature recorder; 4) performing immersion freezing by coupling a non-freezing solution and dry ice: putting the food material pre-cooled in step 2) into the cooled non-freezing solution in step 3) for immersion freezing, and adding dry ice at the same time; and 5) recording changes of the internal temperature of the food material in step 4) by using the temperature recorder, and ending freezing when the internal temperature of the food material reaches a target temperature. The method further comprises determining heat transfer of the food material and an addition amount of the dry ice during freezing.
A23B 4/09 - FreezingSubsequent thawingCooling with addition of chemicals before or during cooling with direct contact between the food and the chemical, e.g. liquid N2, at cryogenic temperature
A23L 3/375 - Freezing; Subsequent thawing; Cooling with addition of chemicals with direct contact between the food and the chemical, e.g. liquid N2, at cryogenic temperature
ZHEJIANG YONGTAI CHIRAL MEDICINE TECHNOLOGY CO., LTD. (China)
Inventor
Cheng, Feng
He, Kuang
Liu, Zhiqiang
Zheng, Yuguo
Xia, Haijian
Gu, Jianxiong
Lin, Jiaohua
Jin, Yizhong
Abstract
Provided is an omega-transaminase mutant acquired by a single-point mutation or multi-point mutation at positions 275, 115, and 97 of the amino acid sequence set forth in SEQ ID NO. 2. The transaminase mutant is derived from Aspergillus lentulus. It catalyzes bioreactions with a ketone precursor of a sitagliptin intermediate as the substrate, isopropylamine as the amino donor, pyridoxal phosphate as the coenzyme, and a protonic polar solvent as the cosolvent, thus separating and purifying sitagliptin or the sitagliptin intermediate with high optical purity.
The present disclosure discloses a complex network attack detection method based on cross-host abnormal behavior recognition, and the method includes the following steps: 1) firstly collecting kernel log data of a host to construct an intra-host association graph, then employing a graph convolution network (GCN) to extract features, and finally using an autoencoder to detect abnormal nodes in the intra-host association graph; 2) firstly constructing an inter-host interaction graph by using network flow log data, then training a prediction model based on a sequence of the inter-host interaction graph, and finally detecting abnormal edges in the inter-host interaction graph according to prediction differences; and 3) firstly constructing a cross-host exception association graph according to intra-host and inter-host exception detection results, then spreading exception scores by employing a PageRank algorithm, and finally confirming an attacked host based on the exception scores.
A D-amino acid oxidase mutant with significantly improved catalytic performance, a coding gene, a vector and a genetically engineered bacterium comprising the coding gene, and use of the mutant in microbial catalysis to prepare L-phosphinothricin. The D-amino acid oxidase mutant is obtained by single-point mutation or multi-point joint mutation of the amino acid set forth in SEQ ID NO. 1. The beneficial effects are mainly that: the present invention provides a D-amino acid oxidase mutant with improved enzyme activity and enzyme thermal stability, which can be used for microbial catalysis to prepare L-phosphinothricin, is suitable for industrial production, and has good application prospects.
Disclosed in the present invention are a high-conductivity high-mobility n-type diamond thin film and a preparation method therefor. According to the method, tantalum atoms entering a thin film in a chemical vapor deposition process are doped at a nanoscale interface. The doping method is different from conventional lattice substitution doping, well solves the problem of n-type doping in diamond, and further provides a new way to solve the doping problems of other wide-band gap materials.
C30B 29/60 - Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) complex based on an oxygen atom linkage and containing phenyl acridine and an application thereof. The tetradentate cyclometalated platinum (II) complex has the structure as represented by general formula (I). (I) The cyclometalated platinum (II) complex in the present invention adopts a tetradentate ligand, is high in rigidity, and can improve the light stability of a light-emitting material. At the same time, the complex molecule can strongly emit light, and therefore can be used as a light-emitting material in an OLED device.
The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) complex based on an oxygen atom linkage and containing phenyl acridine and an application thereof. The tetradentate cyclometalated platinum (II) complex has the structure as represented by general formula (I). (I) The cyclometalated platinum (II) complex in the present invention adopts a tetradentate ligand, is high in rigidity, and can improve the light stability of a light-emitting material. At the same time, the complex molecule can strongly emit light, and therefore can be used as a light-emitting material in an OLED device.
The present invention relates to an organic light-emitting diode material, a device and an apparatus. The phosphorescent material and the composition in the present invention have excellent chemical stability, and can improve and balance hole and electron transport, such that the energy transmission between a host and a guest is more efficient. In particular, the current efficiency and service life of an organic electroluminescent device using the composition of the present invention are increased, having great application prospects in the fields of OLED display and illumination.
Disclosed is a testing device and method for a service life of an air-conditioning compressor of a new energy vehicle running with pure gas. The testing device includes an alternative refrigeration system, a measurement and control system, and a testing environment room. A main refrigeration cycle system of the alternative refrigeration system runs with pure gas, gas of a testing compressor is discharged via a discharge throttle valve, and then enters a suction end via a suction throttle valve and an electronic expansion valve, and since there is no phase change, a heat exchange amount is small; adjustable ranges of the discharge throttle valve, the suction throttle valve and the electronic expansion valve are wide; and based on the system structure, a small refrigeration system can be used to test a compressor having high cooling capacity, and the system can quickly achieve a target working condition with a small amount of refrigerant.
A bi-directional penetrating metal bottleneck structure of a type IV hydrogen storage tank is provided, which includes a metal valve seat, a plastic liner, and a fiber winding layer. A valve seat hole is formed on an inner side of the metal valve seat, and the metal valve seat includes an annular flange, a valve seat column section, and a valve seat extension. L-shaped through holes and radial penetrating holes are formed in the valve seat column section. The valve seat hole is an irregular through hole and is provided with an annular groove. The valve seat extension is provided with a winding inclined plane, a self-tightening conical surface, a circumferential groove, and axial penetrating holes. The plastic liner includes an inner plastic joint, an outer plastic joint, a tapered connecting section, L-shaped connectors, radial connectors, axial connectors, and a reinforcement section. A flared annular boss at an upper part of the inner plastic joint is tightly clamped and embedded in the annular groove, and a lower part of the inner plastic joint, the L-shaped connector and the radial connector enclose a “B”-shaped binding structure to wrap a lower part of the valve seat column section inside and outside. According to the present disclosure, binding fastening is achieved, a sealing effect is enhanced, and the reliability and stability of a connection between the plastic liner and the metal valve seat are ensured.
The disclosure relates to the technical field of organic luminescent materials, and provides a metal platinum (II) and palladium (II) complex luminescent material containing quinoline structural units, which is also shown as follows. Compared with a bidentate ligand platinum complexe, the tetradentate ligand-based cyclometalated metal platinum (II) and palladium (II) complex provided by the disclosure has strong molecular rigidity, can effectively suppress non-radiative transition due to molecular vibration, greatly improve the quantum efficiency, and have broad application prospects in many fields such as OLED display and lighting.
The disclosure relates to the technical field of organic luminescent materials, and provides a metal platinum (II) and palladium (II) complex luminescent material containing quinoline structural units, which is also shown as follows. Compared with a bidentate ligand platinum complexe, the tetradentate ligand-based cyclometalated metal platinum (II) and palladium (II) complex provided by the disclosure has strong molecular rigidity, can effectively suppress non-radiative transition due to molecular vibration, greatly improve the quantum efficiency, and have broad application prospects in many fields such as OLED display and lighting.
Disclosed are a complex, use thereof, an organic light-emitting element, and a display or lighting device. The complex has a structure represented by general formula (I) or general formula (I'), wherein (I) and (I') are enantiomers of each other. Helical chirality metal complex molecules of the present invent can autonomously induce a whole tetradentate ligand by means of a central chiral fragment La in the tetradentate ligand to coordinate with a metal ion in a mode of small steric hindrance to form an optically pure helical chirality metal complex circularly polarized luminescence material. The circularly polarized luminescence material does not require chiral resolution, has high chemical stability, and thus has important application value in a circularly polarized light-emitting element.
A method for preparing a cyclohexanone compound by photocatalysis of a biomass phenolic compound, the method comprising: adding a biomass phenolic compound represented by formula I, a photocatalyst, and an aqueous solvent into a reactor, and carrying out a selective hydrogenation reaction at 150-180 °C in an inert gas atmosphere under illumination conditions to obtain a cyclohexanone compound represented by formula II. The method has mild reaction conditions, uses water as an environmentally friendly solvent, yields high conversion rates of biomass phenolic compounds, and has good selectivity for cyclohexanone compounds.
C12N 15/31 - Genes encoding microbial proteins, e.g. enterotoxins
C12P 27/00 - Preparation of compounds containing a gibbane ring system, e.g. gibberellin
55.
CENTRAL CHIRALITY INDUCED SPIRO CHIRAL TETRADENTATE CYCLOMETALATED PLATINUM (II) AND PALLADIUM (II) COMPLEX-BASED CIRCULARLY POLARIZED LUMINESCENCE MATERIAL AND APPLICATION THEREOF
Disclosed are a central chirality induced spiro chiral tetradentate cyclometalated platinum (II) and palladium (II) complex-based circularly polarized luminescence material and an application thereof. Spiro chiral metal complex molecules can be autonomously induced by a whole tetradentate ligand to coordinate with metal ions in a less sterically hindered manner by means of a central chiral fragment La in the tetradentate ligand, to form an optically pure spiro chiral metal complex-based circularly polarized luminescence material, without need for chiral resolution. Moreover, the material has high chemical stability and thermal stability, and has important applications in circularly polarized luminescence devices.
Disclosed in the present invention are a helical-chiral tetradentate cyclometalated platinum (II) and palladium (II) complex circularly polarized light-emitting material based on phenyl-benzimidazole and a derivative thereof, and a use. The helical-chiral metal complex molecule can, by means of a central chiral segment La in a tetradentate ligand, autonomously induce the whole tetradentate ligand to coordinate with metal ions in a small steric hindrance manner to form an optically pure helical-chiral metal complex circularly polarized light-emitting material. The helical-chiral metal complex circularly polarized light-emitting material does not require chiral resolution, has high chemical stability and thermal stability, and has important applications in circularly polarized light-emitting elements.
Disclosed are a spirochiral platinum(ii) and palladium(ii) complex circularly polarized luminescent material, and a use thereof. The formation of the spirochiral metal complex molecule can autonomously induce an entire tetradentate ligand to coordinate with a metal ion in a manner having minimal steric hindrance by means of a central chiral fragment in the ligand, to form an optically pure spirochiral metal complex circularly polarized luminescent material, the induction reaction being stereospecific; the spirochiral metal complex does not require chiral resolution; the spirochiral metal complex material has high chemical stability and thermal stability. The present spirochiral metal complex has important uses in circularly polarized light-emitting components and related fields.
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
C07D 413/14 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
A claw-pole magnetic levitation torque motor includes a stator component and a rotor component. The stator component includes an end cover, upper and lower claw poles, coil skeletons, coils, and a flux guide sleeve. The cavity formed between the upper and lower claw poles accommodates the coil skeletons, on which coils are wound. The rotor component includes a ring-shaped shell, a permanent magnet, a base, and a shaft. The shell is fitted outside the claw poles, the bottom of the shell includes a base having a base platform shoulder, in the center of which a blind hole is opened. The lower end of the shaft is fixedly arranged in the blind hole, and the upper end of the shaft passes through the flux guide sleeve. The stator component is assembled with the rotor component through a gap-fitting between the magnetic guide sleeve and the shaft of the rotor component.
The present invention discloses a method for building a co-culture model for Caco-2/RAW-264.7 cells induced by lipopolysaccharides and an application of the co-culture model. The method includes: 1) culturing Caco-2 cells and RAW-264.7 cells; 2) inoculating the 5 Caco-2 cells onto an AP side of an upper chamber of a Transwell plate, and incubating; 3) inoculating the RAW-264.7 cells onto a 24-well plate, and incubating; 4) transferring the upper chamber of the Transwell plate into the 24-well plate; 5) dissolving lipopolysaccharides in PBS to prepare a stock solution, filtering, and diluting for later use; and 6) adding an LPS-10% DMEM medium on a BL side, incubating, and forming an intestinal inflammation model.
ZHEJIANG PUNCHER DIGITAL TECHNOLOGY CO., LTD (China)
Inventor
Zhan, Hongwu
Xu, Fang
Li, Zhiming
Zhang, Libin
Abstract
A color density characteristic curve collection method for printing, the method comprising: designing an N-order standard color gradation diagram of a single-color channel; performing printing output and scanning correction on the N-order standard color gradation diagram; performing a boundary searching operation on the corrected diagram; partitioning the diagram; and performing deviation calculation. The method is successively used for each color channel, such that color density characteristic curves of all color channels can be obtained. Such method provides a basis for solving the problem of the deviation of color density characteristics at different positions.
Zhejiang Puncher Digital Technology Co., Ltd (China)
Inventor
Zhan, Hongwu
Xu, Fang
Li, Zhiming
Zhang, Libin
Abstract
The present invention belongs to the field of printing, and specifically relates to a method for acquiring a color density characteristic curve in printing, including: designing a standard N-color level image of a single color channel; performing printout and scan correction on the standard N-color level image; performing edge finding operation on a corrected image; dividing the image into regions; and calculating a deviation. According to the method for acquiring a color density characteristic curve in printing by channels provided by the present invention, the color density characteristic curve of all the color channels may be obtained by sequentially using the method in the present invention on the color channels. The method in the present invention provides a basis for studying the performance of a printing system and further solving the problem of color density characteristic deviations at different positions.
The present invention relates to a method of preparing xylitol by using a xylose secondary mother liquor through fermentation. In the method, fermentation treatment is performed on a mixed liquid of the xylose secondary mother liquor and a xylose concentrate, and the xylose secondary mother liquor is subsequently batch-fed instead of glucose in the fermentation process. Thus, a glucose content in the fermentation system is stabilized, and some xylose is provided at the same time. In this way, the use amount of glucose and costs are reduced, and the system xylose can be relatively stabilized, thus improving the entire conversion rate. In the present invention, adding the xylose secondary mother liquor by mixed fermentation and batch feeding and the like enables the contents of heterosaccharides such as arabinose and mannose in the fermentation system to be always within a range of metabolization by fermenting strains, facilitating subsequent purification and improving the xylitol purity.
The invention discloses a porous intermetallic compound and preparation method and application thereof. The pore structure of the porous intermetallic compound includes micropores and mesopores, and the micropores and mesopores are distributed in disorder, wherein the content of the micropores accounts for 6-68%, and the content of mesopores accounts for 32-92%; the specific surface area of the porous intermetallic compound is 50-1600 m2/g, and the porous intermetallic compound is a porous copper silicide intermetallic compound or porous copper-chalcogen intermetallic compound. The invention provides preparation methods of the porous intermetallic compound, and also provides an application of the porous intermetallic compound as a catalyst in the reaction of acetylene hydrochlorination to synthesize vinyl chloride. The porous intermetallic compound catalyst prepared by the invention can carry out the acetylene hydrochlorination reaction in a wide space velocity range, and has good catalytic activity.
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
64.
COMPOSITION, PREPARATION, ORGANIC ELECTROLUMINESCENT DEVICE, AND DISPLAY OR ILLUMINATION APPARATUS
The present invention relates to a composition, a preparation, an organic electroluminescent device, and a display or illumination apparatus. A phosphorescent material and the composition in the invention have good thermal stability, can balance hole and electron transport, and are more efficient in terms of energy transfer between a subject body and an object body. Specifically, the composition of the present invention is used as a luminescent layer of the organic electroluminescent device, and the external quantum efficiency of the luminescent device is improved. The composition has significant application prospects in the fields of OLED display and illumination.
A method for measuring the diameter of filament diffraction fringes by frequency domain calculation comprising: building a set of diffraction optical path measurement system and capturing diffraction fringe images; determining the starting point of the imaging range; Simulating the electromagnetic field propagation process in Fraunhofer diffraction, and determining the optimal fringe range considering the noise caused by the difference in CCD sensitivity; Finally calculating the filament diameter by Fourier transform for different lengths of fringe. The final value of the calculated filament diameter is obtained by fitting an envelope to the variation of the diameter. The invention is simple in calculation and has little dependence on the experimental device, which means the superiority of using the frequency domain for parameter measurement, and the measurement accuracy is in the sub-nanometer level. In addition, the invention proves the feasibility of extracting the fringe period information in the frequency domain.
Disclosed is a method for predicting surface quality of a burnishing workpiece. The method includes the steps: using vibration sensors and signal acquisition instrument to acquire vibration signals generated on a surface of the burnishing workpiece during machining, evaluating the surface quality of the burnishing workpiece based on a coupling coordination degree model, processing signals by using an ensemble empirical mode decomposition method, identifying power spectral density, kurtosis and form factor as signal characteristics, identifying a support vector machine as a decision-making model, optimizing penalty parameters and kernel function parameters by using the Bayesian optimization method, and establishing the relationship between the signal characteristics and the surface quality. The method can quickly identify the signal characteristics for evaluating the workpiece surface quality, thereby improving the workpiece surface quality by intervening in process parameters, making up for the technical defect that condition monitoring cannot be performed during the machining process.
Disclosed is a rolling workpiece surface quality prediction method. A vibration sensor and a signal collection instrument are used to collect a vibration signal produced on a surface of a workpiece during processing, the surface quality of the rolling workpiece is evaluated on the basis of a coupling coordination degree model, an ensemble empirical mode decomposition method is used to process the signal, power spectral density, kurtosis and waveform factors are selected as signal features, a support vector machine is determined as a decision model, a Bayesian optimization method is used to optimize a penalty parameter and a kernel function parameter, and a relationship between the signal features and the surface quality is established. The method can rapidly identify signal features for evaluating workpiece surface quality, so as to achieve the purpose of improving workpiece surface quality by means of process parameter intervention, thereby overcoming the technical defect that real-time state monitoring cannot be carried out during rolling processing, and having the advantage of workpiece surface quality online optimization.
G06F 18/2411 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on the proximity to a decision surface, e.g. support vector machines
G01B 17/08 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring roughness or irregularity of surfaces
68.
METHOD FOR TREATING POLLUTED WATER BODY BY USING WATER QUALITY REGULATOR
Disclosed in the present invention is a method for treating a polluted water body by using a water quality regulator. The water quality regulator comprises acidic calcium sulfate. Pollutants in polluted water bodies comprise blue-green algae, green algae, moss or spirogyra. The acidic calcium sulfate has great safety; and, at a use dilution ratio of 1/3000, an alga removing effect can be achieved just after half an hour, and blue-green algae obviously settle and die after one hour. The water quality regulator is remarkably better than several commonly-used chemical algaecides currently on the market. The water quality regulator causes no secondary pollution, is non-corrosive, has low cost, can be widely used, and is easy to use, thereby being very suitable for emergency treatment and control of blue-green alga outbreak.
A method for detecting and diagnosing a production abnormality of an industrial system on the basis of multi-dimensional sensing data. The method comprises: pre-processing a multi-dimensional sensing data sample, and dividing the pre-processed multi-dimensional sensing data sample into several sub-samples by using a sliding window; by using an automatic encoder, obtaining an abnormality detection model by means of unsupervised training and on the basis of training normal sub-samples; training a classification model according to the abnormality detection model; and performing real-time detection and diagnosis on a production abnormality of an industrial system on the basis of the abnormality detection model and the classification model. By using the method, the problem of it being difficult to perform abnormality diagnosis for abnormality detection of multi-dimensional sensing data by using a black-box model at present is solved.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
70.
METAL PLATINUM (II) AND PALLADIUM (II) COMPLEXES, ORGANIC LIGHT-EMITTING DEVICE, AND DISPLAY OR LIGHTING APPARATUS
Provided in the present invention are metal platinum (II) and palladium (II) complexes, an organic light-emitting device, and a display or lighting apparatus. The metal platinum (II) and palladium (II) complexes have a structure being represented by following formula (I). Molecules of the cyclic metal platinum (II) and palladium (II) complexes based on a tetradentate ligand have strong rigidity, thus non-radiation transition caused by molecular vibration can be effectively inhibited and relatively high quantum efficiency and luminous intensity can be achieved. In addition, the tetradentate phosphorescent metal complexes of the present invention are of a new parent nucleus structure, which can be developed into a series of efficient phosphorescent metal platinum complexes. The present invention has an excellent use prospect in the fields of OLED display, illumination and the like, especially light-emitting layer materials.
The present disclosure discloses a digital hydraulic assisted braking system with a high dynamic response and a control method thereof. The system includes a two-position two-way digital switch valve A, a controller, an electromagnetic two-position two-way proportional reversing valve, a two-position two-way digital switch valve B, a displacement detection system, and a pressure detection system. When a vehicle starts, a control system of the present disclosure maintains a preload state and responds to a braking at any time. During an emergency braking, the braking system is open. When the vehicle is shut down, the braking system is closed. Compared with an existing braking method, by implementing the braking method of the present disclosure, a braking response time is greatly shortened, a dynamic performance of a braking response period is improved, and a safety of vehicle braking is further guaranteed.
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/34 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
72.
Multi-mode hydraulic braking systems and control methods thereof
The present disclosure discloses multi-mode hydraulic braking systems and control methods thereof. The system includes a two-position three-way digital switch valve, an electromagnetic three-position three-way proportional reversing valve, a controller, a pressure detection system, a speed detection system, and a displacement detection system. The controller intelligently switches a digital braking mode, a composite braking mode, and an anti-lock braking mode after collecting a brake signal through the pressure detection system and speed detection system in real time. The present disclosure integrates an electro-hydraulic proportional control technology with the electromagnetic three-position three-way reversing valve as a control element and a digital hydraulic technology with a digital switch valve as a control element and takes into account an anti-lock function on the basis of digital and composite braking modes to ensure safety of emergency braking and improves versatility of the braking system by the controller intelligently switching the operating modes.
Disclosed is a method for enzymatic synthesis of a brivaracetam chiral intermediate, i.e., a method for synthesizing a brivaracetam chiral intermediate (R)-3-cyanohexanoic acid by catalyzing the hydrolysis of 3-cyanohexanitrile using an enzyme with nitrile hydrolysis activity, and the enzyme with nitrile hydrolysis activity is obtained by carrying out a single mutation or a double mutation on an amino acid at position 140 or an amino acid at position 175 in an amino acid sequence as set forth in SEQ ID NO. 2. Compared with a wild type, the nitrilase mutant of the present invention has the activity increased by 10 times, an ee value increased to 300 or more from 39, a substrate conversion rate of 45%, and a product ee which can reach 98.5%, and the yield of (R)-3-aminomethylhexanoic acid by catalytic hydrogenation synthesis using (R)-3-cyanohexanoic acid reaches 85% or more. The present invention features a short synthesis route, mild reaction conditions, and high atom economy, and can be applied to the industrial synthesis of the brivaracetam intermediate.
C12N 15/70 - Vectors or expression systems specially adapted for E. coli
C12N 1/21 - BacteriaCulture media therefor modified by introduction of foreign genetic material
C12N 11/089 - Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
C12N 11/14 - Enzymes or microbial cells immobilised on or in an inorganic carrier
C07C 253/30 - Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
74.
PLATINUM COMPLEX, ORGANIC PHOTOELECTRIC DEVICE, AND DISPLAY OR LIGHTING DEVICE
Provided are a platinum complex, an organic light-emitting device and a display or lighting device. A 8-phenylquinoline structure and a derivative thereof, a benzo-five-membered heterocycle and a phenoxy tetradentate ligand are used to develop a 6/5/7 metal fused cyclic structure and obtain a tetradentate ring platinum complex phosphorescent material. The chemical formula of the phosphorescent material is shown by general formula (1).
Disclosed is a confining pressure-adjustable test and observation system for soil deformation features during vacuum preloading. The system includes a soil vacuum consolidation system, a vacuum drive system, a confining pressure system and a monitoring system; where the soil vacuum consolidation system includes a model box filled with test soil, the confining pressure system is arranged in the model box, two sides of the model box are provided with slide plates, and the slide plates on two sides are provided with expansion control cavities at two side ends of the model box correspondingly, and a corrugated air bag is arranged in the expansion control cavity and is connected to an external air pump and an air bag air pressure control device through a pipeline; the test soil in the model box is covered with geotextile, and the geotextile is covered with a vacuum film.
The present invention discloses a polyphosphate kinase mutant, engineered strain and application thereof, wherein the polyphosphate kinase mutant is obtained by single- or multi-site mutations of the amino acid at position 79, 106, 108, 111 or 285 of the amino acid sequence shown in SEQ ID No. 2. The present invention provides a variety of polyphosphate kinase mutants derived from Cytophaga hutchinsonii, and the specific enzyme activity of these mutants is 2.7-17.9 times higher than that of the parent polyphosphate kinase, more than 70% of the amount of adenosine triphosphate (ATP) consumption in ATP-dependent biocatalytic synthesis reactions may be reduced by the ATP regeneration system constituted by the mutants, which has broad industrial application prospects.
Provided are a polyphosphate kinase mutant, engineering bacteria and a use thereof. The polyphosphate kinase mutant is obtained by a single mutation or a multi-site mutation at position 79, 106, 108, 111 or 285 of the amino acid sequence shown in SEQ ID NO:2. A plurality of polyphosphate kinase mutants derived from Cytophaga hutchinsonii are provided. The specific enzyme activity of the mutants is 2.7 to 17.9 times higher than that of parent polyphosphate kinase. The ATP regeneration system formed by the mutants can reduce than 70% or more of ATP consumption in an ATP-dependent biocatalysis reaction, and has a broad industrial application prospect.
The present invention discloses a method for preparing L-glufosinate ammonium powder. The method includes the following steps: (1) obtaining a transformation solution for performing biocatalytic transformation to prepare L-glufosinate ammonium, and filtering out bacteria to obtain a filtrate; (2) detecting the amount of ammonium sulfate in the filtrate obtained in step (1), adding calcium hydroxide or calcium oxide to react with the ammonium sulfate to produce calcium sulfate precipitates, and filtering out the calcium sulfate precipitates to obtain a filtrate; (3) detecting the amount of glufosinate ammonium in the filtrate obtained in step (2), adding zinc salt, adjusting pH to 5.5-6.8 to produce glufosinate ammonium zinc salt precipitates, and filtering and collecting the glufosinate ammonium zinc salt precipitates; (4) adding a solvent to dissolve the glufosinate ammonium zinc salt precipitates collected in step (3), and adjusting pH of a solution to 2-2.5 to produce L-glufosinate ammonium precipitates; and (5) recrystallizing the L-glufosinate ammonium precipitates obtained in step (4) to obtain purified L-glufosinate ammonium powder. The method provided by the present invention is simple to operate and low in cost, and has a better industrialization prospect.
A01N 57/20 - Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
79.
CATALYTIC COMBUSTION TYPE HYDROGEN SENSOR AND PREPARATION METHOD THEREOF
A catalytic combustion type hydrogen sensor and a preparation method thereof. The catalytic combustion type hydrogen sensor comprises a catalytic combustion element and a compensation element, wherein the catalytic combustion element and the compensation element are both of a planar thin film structure with a mica sheet (1) as a substrate, and a platinum resistor (2) and an aluminum oxide thin film (3) carrier are sequentially attached to a surface of the mica sheet (1) substrate; wherein palladium nanoparticles (4) are also attached as catalysts to a surface of the aluminum oxide thin film (3) carrier of the catalytic combustion element. When the sensor is used for detecting hydrogen concentration, the catalytic combustion element is heated to the starting temperature of hydrogen oxidation, and the heat released by the flameless combustion of hydrogen under the assistance of the catalysts increases the resistance value of the platinum resistor, so as to detect hydrogen concentration. In the catalytic combustion type hydrogen sensor, the basic framework and physical properties of the compensation element are the same as those of the catalytic combustion element, except that the compensation element has no palladium nanoparticles (4) catalysts. Hydrogen does not generate a combustion reaction on the surface and is mainly used for forming a bridge measurement circuit and realizing a temperature compensation function.
G01N 27/16 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
G01N 27/02 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
80.
Boss structure sealing experiment device and system for IV type hydrogen storage cylinder, and test method
A boss structure sealing experiment device for an IV type hydrogen storage cylinder. The device includes a high-pressure chamber, a sealing leakage structure, a cylinder mouth valve, and a low-pressure chamber, where the high-pressure chamber, the sealing leakage structure, and the low-pressure chamber are tightly connected to one another through flange bolts, and the cylinder mouth valve is tightly connected to the high-pressure chamber through threads. Further disclosed is a sealing experiment system. The system includes a boss structure sealing experiment device, a high-pressure gas supply device, and a leaked gas detection device. The high-pressure gas supply device consists of a hydrogen source, a compressor, a buffer tank, a valve, and a pressure gauge; and the leaked gas detection device consists of a gas mixing chamber, a carrier gas, and a gas leakage detector. Further disclosed is a test method for a boss structure sealing experiment.
G01M 3/32 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
81.
DATA-DRIVEN RAPID TRACEABILITY METHOD FOR AIR POLLUTANTS IN SMALL-SCALE REGIONALS
The present invention relates to a data-driven rapid traceability method for air pollution in small-scale regions, comprising: localizing the land use type information of air pollution diffusion model and simulating the meteorological field; according to local meteorological conditions, constructing the meteorological scenarios with the combination of equidistantly divided meteorological parameters; forming the pollution traceability database by the traceability results which is obtained by stimulating the meteorological scenarios via the air pollution diffusion simulation platform; building the data-driven model by taking the pollution traceability database as training data for fitting; realizing the rapid pollution traceability by matching the pollution traceability database or triggering the data-driven model by the real-time meteorological conditions. The present invention greatly improves the precision and speed of pollution traceability, realizes significant improvement in the comprehensive control of air pollution in small-scale regions, greatly supports the substantial reduction of VOCs to effectively improve the air quality.
A shaft-distributed double-acting roller piston pump includes a front end cover, a pump casing, a rear end cover and a pump core assembly. The pump core assembly includes a guide rail assembly including left and right guide rails arranged back to back. The side surfaces of the left and right guide rails away from each other are space cam curved surfaces. A flow distribution shaft is installed in the center of the guide rail assembly. A cylinder assembly is installed on both sides of the guide rail assembly including left and right cylinders, between which a piston assembly is arranged. The piston assembly forms left and right closed cavities with the left and right cylinders respectively. The piston assembly performs axial reciprocating linear motion under the constraint of the cylinder assembly and the guide rail assembly, and the volumes of the left and right closed cavities change continuously.
A novel geotextile tube type sludge dehydration device combined with vacuum preloading including a geotextile tube for filling sludge, a pump drainage mechanism, vacuum tubes and a vacuum pump, where the geotextile tube is divided into top cloth and bottom cloth, a slurry filling inlet is provided on the top cloth, and the top cloth and the bottom cloth are sewn by means of a portable rechargeable bag sewing machine; and the pump drainage mechanism is arranged in the geotextile tube, is connected to the vacuum pump by means of the vacuum tubes, and includes a drainage plate and a hand connector, the drainage plate being inserted into the hand connector, the hand connector is connected to the vacuum tubes, and is fixed by hoops, and the vacuum tubes pass through flange piece ports on the geotextile tube, to be connected to the vacuum pump.
Adsorbable electromagnetic field auxiliary device for large components, comprises an iron core being adsorbed on the component to be processed with an integral rectangular frame including a pair of lateral sides and a pair of longitudinal sides; lateral sides are installed with electromagnetic coils having opposite magnetic pole pointing to the component. A photoelectric sensor installed on the longitudinal side senses the real-time position of the laser head; the longitudinal opposite sides are each provided with a screw movement device and a brush device; the brush head of the brush device slides on the surface of the component forming a directional electric field; the motor controlled by the central controller adjusts the position of the brush device, so that the two brush heads and the laser head are always in a straight line to ensure the stability of the electric field in the laser processing area and uniformity.
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
G01R 1/04 - HousingsSupporting membersArrangements of terminals
85.
MONOAMINE OXIDASE B INHIBITOR HAVING POTENTIAL IRON CHELATING ACTIVITY AND USE THEREOF
A class of monoamine oxidase inhibitors having an iron ion chelating activity. A pyridone derivative having an iron ion chelating activity is organically combined with a chromone parent nucleus having a MAO-B inhibitory activity, which has obvious advantages for neurodegenerative diseases with complicated pathogenesis, such as Alzheimer's disease and Parkinson's disease.
C07D 405/12 - Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
A61P 25/28 - Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
86.
METHOD FOR PREPARING L-GLUFOSINATE AMMONIUM BY BIOLOGICAL ENZYMATIC DE-RACEMIZATION, GLUFOSINATE AMMONIUM DEHYDROGENASE MUTANT AND USE THEREOF
The present invention discloses a method for preparing L-glufosinate ammonium by biological enzymatic de-racemization, a glufosinate ammonium dehydrogenase mutant and a use thereof. The method for preparing L-glufosinate ammonium by biological enzymatic de-racemization includes catalyzing D,L-glufosinate ammonium as a raw material by a multi-enzyme catalysis system to obtain L-glufosinate ammonium. The enzyme catalysis system includes D-amino acid oxidase for catalyzing D-glufosinate ammonium in the D,L-glufosinate ammonium to 2-carbonyl-4-[hydroxy(methyl)phosphonyl]butanoic acid, and a glufosinate ammonium dehydrogenase mutant for catalytically reducing 2-carbonyl-4-[hydroxy(methyl)phosphonyl]butanoic acid to L-glufosinate ammonium. The glufosinate ammonium dehydrogenase mutant is obtained by mutation of glufosinate-ammonium dehydrogenase in wild fungi Thiopseudomonas denitrificans at a mutation site of V377S. The glufosinate ammonium dehydrogenase mutant in the present invention has better catalytic efficiency. When racemic D, L-glufosinate ammonium is used as a substrate for a catalytic reaction, the conversion rate is much higher than the conversion rate of a wild-type enzyme, and the yield of 2-carbonyl-4-[hydroxy(methyl)phosphonyl]butanoic acid (PPO for short) is also greatly improved.
C07D 241/42 - Benzopyrazines with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals
B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
B01J 37/02 - Impregnation, coating or precipitation
TAIZHOU BRANCH, ZHEJIANG-CALIFORNIA INTERNATIONAL NANOSYSTEMS INSTITUTE (China)
ZHEJIANG UNIVERSITY OF TECHNOLOGY (China)
Inventor
Kong, Deyu
Sheng, Jiansong
Yang, Hui
Abstract
The present invention provides a low-cost preparation method for an intercalation modified calcium silicate hydrate (C-S-H) gel nanodispersion. The preparation method comprises: adding calcium hydroxide, superfine quartz sand powder, and water-soluble small molecules to a certain molar concentration of a sodium hydroxide solution; then adding the mixture to a ball mill for ball milling treatment for 90-240 min; and performing repeated pressure filtration treatment and dispersion treatment on the reaction solution to obtain an intercalation modified C-S-H gel nanodispersion. Beneficial effects of the present invention are mainly that: the mechanical force chemical effect during a ball milling process is fully utilized; sodium hydroxide is used as an intermediate component of the chemical reaction of quartz sand powder under a mechanical force chemical effect, so as to promote the chemical reaction of the low-cost quartz sand powder and calcium hydroxide under the mechanical force chemical effect, so that cheap and easily available quartz sand powder and calcium hydroxide can be used as raw materials to prepare intercalation modified C-S-H gel nanodispersion; the preparation process is low in cost; and the sodium hydroxide and pressure filtration water can be recycled.
E. coli, and knocks out the genes of enzymes that catabolizes cofactor, and with the addition of co-metabolic intermediates during cell incubation, the intracellular NADP(H) concentration is increased by at least 50% and the catalytic activity of glufosinate dehydrogenase by 2-fold, resulting in a significant increase in the spatiotemporal yield of the glufosinate synthesis reaction.
The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) coordination complex based on carboxyl coordination and containing pyridyl acridine, and use thereof. The tetradentate cyclometalated platinum (II) coordination complex has the structure of the general formula (I):
The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) coordination complex based on carboxyl coordination and containing pyridyl acridine, and use thereof. The tetradentate cyclometalated platinum (II) coordination complex has the structure of the general formula (I):
The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) coordination complex based on carboxyl coordination and containing pyridyl acridine, and use thereof. The tetradentate cyclometalated platinum (II) coordination complex has the structure of the general formula (I):
In the present invention, the tetradentate cyclometalated platinum (II) coordination complex includes a tetradentate ligand containing a strong-field ligand of an oxygen negative ion, with strong coordination capability and high rigidity, which can improve the quantum efficiency and photostability.
C07F 15/00 - Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
91.
Plant leaves-derived carbon material doped with two metals and preparation and use thereof
A plant leaves-derived carbon material doped with two metals and preparation and use thereof are provided, the carbon material prepared by carbonizing, in an inert atmosphere, plant leaves which have absorbed ions of two metals M1 and M2. The metal M1 is Co, Mn, or Fe. The metal M2 is Ni, Cu, or Zn. The carbon material can be used as an efficient, green, and safe catalyst for the selective oxidation of cycloalkanes to produce cycloalkanols and cycloalkanones, and enable an increased selectivity of the target products (thus less by-products), a low yield of cycloalkyl peroxides, reduced reaction temperature, low environmental impact, and safe production.
C07C 27/12 - Processes involving the simultaneous production of more than one class of oxygen-containing compounds by oxidation of hydrocarbons with oxygen
92.
TETRADENTATE CYCLOMETAL PLATINUM(II) AND PALLADIUM(II) COMPLEX LUMINESCENT MATERIAL CONTAINING QUINOLINE STRUCTURAL UNIT AND APPLICATION THEREOF
The present invention relates to the technical field of organic luminescent materials, and provides a metal platinum (II) and palladium (II) complex luminescent material containing a quinoline structural unit, as shown below. Compared with a bidentate ligand platinum complex, the tetradentate ligand-based cyclometallated platinum (II) and palladium (II) complex provided by the present invention has strong molecular rigidity, and can effectively suppress nonradiative transitions due to molecular vibrations; moreover, quantum efficiency can be greatly improved; in addition, the present invention has broad application prospects in many fields such as OLED display and lighting.
C07D 401/14 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
The present invention discloses a transaminase mutant and application thereof in preparation of sitagliptin intermediates, the transaminase mutant is obtained by substitution of tyrosine with proline at position 74, substitution of glutamic acid with aspartic acid at position 228, substitution of leucine with alanine at position 254 and substitution of methionine with threonine at position 290 of the amino acid sequence shown in SEQ ID NO: 2. The present invention uses wet cells or a purified transaminase as a biocatalyst and a sitagliptin precursor ketone or a prochiral carbonyl compound as a substrate to prepare a sitagliptin intermediate or a sitagliptin ester intermediate; the total yield of the method reaches about 82%, and e.e. value of the product reaches 99%.
C12P 17/18 - Preparation of heterocyclic carbon compounds with only O, N, S, Se, or Te as ring hetero atoms containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin
Disclosed in the present invention is a method for synthesizing a higher alcohol by means of catalytic conversion of ethanol. According to the method, ethanol is used as a raw material and is reacted under the action of a catalyst to generate a higher alcohol. The method is characterized in that the catalyst is a homogeneous mixture of a catalyst I and a catalyst II at a mass ratio of 1:10 to 10:1, the catalyst I is a solid catalyst for the dehydrogenation condensation of ethanol to generate the higher alcohol, and the catalyst II is a solid catalyst having the function of catalyzing an aldol condensation reaction of aldehydes or ketones containing α-H, more aldol condensation active centers are introduced on the basis of catalyst I, and both synergistically catalyze the conversion of ethanol into a higher alcohol. The present invention simultaneously improves the selectivity for a higher alcohol and the conversion rate of ethanol, and ultimately realizes the efficient conversion of ethanol into a higher alcohol under relatively mild reaction conditions without generating small-molecule cracking products. Moreover, the catalyst has excellent stability.
C07C 31/12 - Monohydroxylic acyclic alcohols containing four carbon atoms
C07C 29/32 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of hydroxy groups
C07C 29/17 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
B01J 23/83 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with rare earths or actinides
B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
B01J 35/10 - Solids characterised by their surface properties or porosity
95.
A NITRILASE MUTANT AND APPLICATION THEREOF IN THE SYNTHESIS OF 1-CYANOCYCLOHEXYL ACETIC ACID
The present invention provides a nitrilase mutant and application thereof in the synthesis of 1-cyanocyclohexyl acetic acid, the nitrilase mutant is obtained by mutating one or two of the amino acids at position 180 and 205 of the amino acid sequence shown in SEQ ID No. 2. In the present invention, by semi-rational design and protein molecular modification, the specific enzyme activity of the nitrilase double mutant AcN-G180D/A205C was increased by up to 1.6 folds, and the conversion rate>99%. And the reaction time was shortened to a quarter of the original using the recombinant Escherichia coli containing the nitrilase mutant to hydrolyze 1-cyanocyclohexylacetonitrile at high temperature (50° C.). Therefore, the mutants obtained by the present invention have a good application prospect in efficiently catalyzing 1-cyanocyclohexylacetonitrile to synthesize gabapentin intermediate, 1-cyanocyclohexyl acetic acid.
The present invention provides a high radiation rate platinum complex based on 1,8-substituted carbazole and an application thereof. The luminescent material of the present invention can efficiently control the excited state properties of material molecules by introducing substituents at 1-, 8-position of carbazole, which increases components of metal-to-ligand charge transfer state (MLCT), and improves the intersystem crossing rate of molecules; at the same time, the introduction of substituents at the 1-, 8-position of carbazole can increase the dihedral angle thereof with a pyridine ring, which can improve the rigidity of molecules, effectively reduce the energy consumed by the vibration and rotation of the carbazole ring in the molecules, and reduce non-radiative attenuation. The described factors can jointly increase the radiation rate of material molecules and shorten the lifetime of the excited state.
H01L 51/50 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
97.
CENTRAL CHIRALITY INDUCED SPIRO CHIRAL TETRADENTATE CYCLOMETALATED PLATINUM (II) AND PALLADIUM (II) COMPLEX-BASED CIRCULARLY POLARIZED LUMINESCENCE MATERIAL AND APPLICATION THEREOF
Disclosed are a central chirality induced spiro chiral tetradentate cyclometalated platinum (II) and palladium (II) complex-based circularly polarized luminescence material and an application thereof. Spiro chiral metal complex molecules can autonomously induce the whole tetradentate ligand to coordinate with metal ions in a less sterically hindered manner by means of a central chiral fragment La in the tetradentate ligand, to form an optically pure spiro chiral metal complex-based circularly polarized luminescence material, without the need for chiral resolution. Moreover, the material has high chemical stability and thermal stability, and has important applications in circularly polarized luminescence elements.
C07D 413/14 - Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
C07D 263/52 - Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
H01L 51/50 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
Pseudomonas fluorescens. The recombinant bacterium is obtained by introducing a gene encoding the phosphinothricin dehydrogenase mutant into a host cell. The host cell can also incorporate a gene encoding a glucose dehydrogenase or a gene encoding a formate dehydrogenase to undergo synchronous directed evolution to achieve double gene overexpression. The one-pot multi-enzyme synchronous directed evolution method of the present invention can screen recombinant bacteria with greatly improved activity. Compared with other catalysis processes such as the transaminase method, the method for preparing L-PPT of the present invention features relatively simple process, high conversion of raw materials of up to 100%, and high stereo selectivity.
The present invention discloses an application of norharmane in improving activity of an antibiotic in resisting bacteria, when norharmane of the present invention is combined with polymyxin B, imipenem-cilastatin sodium or levofloxacin, it can enhance antibacterial activity of the antibiotic against drug-resistant Pseudomonas aeruginosa, produce a synergistic antibacterial effect, and significantly improves the killing ability of antibiotics against drug-resistant Pseudomonas aeruginosa to reduce the amount of antibiotics needed for achieving the same therapeutic effect, thereby providing a research direction for the development of new drugs and new use of old drugs.
A61K 31/437 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
A61K 31/407 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with heterocyclic ring systems, e.g. ketorolac, physostigmine
A61K 31/5383 - 1,4-Oxazines, e.g. morpholine ortho- or peri-condensed with heterocyclic ring systems
ZHUHAI FUDAN INNOVATION RESEARCH INSTITUTE (China)
Inventor
Tao, Shengyu
He, Kun
Lei, Yang
Sun, Yaojie
Gao, Yunfang
You, Bo
Xu, Xin
Qian, Minhua
Ma, Lei
Sun, Jie
Zhang, Ruixiang
Abstract
A valve-regulated lead-acid storage battery health state improvement method based on resonant current pulses. The method comprises: first, performing capacity calibration on a valve-regulated lead-acid storage battery by using a cycle tester (1), then performing a test by using a low-frequency constant-potential electrochemical impedance spectrometer (2), and performing initial health state calibration on the valve-regulated lead-acid storage battery according to a tested complex impedance response; then, by using resonant current pulses generated by means of weak voltage signals, which are generated by a signal generator (4), passing through a high-speed power amplifier (3), loading the valve-regulated lead-acid storage battery, and repeatedly performing capacity calibration and initial health state calibration; and finally, fitting a phase response and a frequency, which are measured in the health state calibration step, of the valve-regulated lead-acid storage battery, so as to obtain a radius parameter of a spherical electrode, such that the health state of the valve-regulated lead-acid storage battery can be quickly evaluated. By means of a low-frequency constant-potential electrochemical impedance spectrum test, the health state of a valve-regulated lead-acid storage battery can be quickly tested. In addition, by means of resonant current pulses, the health state of the valve-regulated lead-acid storage battery can be quickly improved at a low cost. Therefore, the method is of great significance to improve the efficiency and reliability of an electrical energy storage system.
G01R 31/379 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
patents
