A method for processing micro-structures on a surface of a metal based on mask-assisted jet biomachining, including steps of: (1) culturing microorganisms; (2) preparing the mask; (3) pretreating a surface of a workpiece to be processed; (4) processing the micro-structures; and (5) reoxidizing the microorganisms into a culture liquid for oxidizing.
The present invention relates to the field of image processing. Disclosed are a single-frame image super-resolution (SR) method and apparatus based on a hybrid feature interaction transformer. The method comprises: acquiring a low-resolution image to be reconstructed; constructing a single-frame image SR model based on a hybrid feature interaction transformer and training same, so as to obtain a trained single-frame image SR model, wherein the single-frame image SR model comprises a shallow feature extraction unit, a deep feature extraction unit and an up-sampling reconstruction unit which are sequentially connected, and the deep feature extraction unit comprises P hybrid feature interaction transformer modules which are sequentially connected; and inputting the low-resolution image into the trained single-frame image SR model, extracting shallow features by means of the shallow feature extraction unit, inputting the shallow features into the deep feature extraction unit for extraction, so as to obtain deep features, and inputting the deep features into the up-sampling reconstruction unit for reconstruction to obtain a reconstructed high-resolution image. The problem of the reconstruction performance being affected due to an SR method for a transformer ignoring latent correlations between features from different dimensions is solved.
BAYECAO HEALTH INDUSTRY RESEARCH INSTITUTE (XIAMEN) CO., LTD. (China)
Inventor
Tang, Xuchong
Zhao, Yingwei
Li, Xuan
Cao, Liping
Abstract
Disclosed are a method for synthesizing nuciferine or a derivative thereof, a derivative of nuciferine and use thereof. A compound having a structure shown in formula IV and R—X are subjected to Schotten-Baumann reaction, followed by carbon-hydrogen bond activation, to obtain the nuciferine or the derivative thereof, which has a structure shown in formula VI. The compound having the structure shown in formula IV is prepared through acyl chlorination reaction, nucleophilic substitution reaction, Bischler-Napieralski reaction, and reduction reaction, with 2-bromophenylacetic acid as a starting material. The derivative of nuciferine could be used in preparation of a lipid-lowering drug.
A method for designing a grinding disc for workpieces includes the following steps: determining process dimension parameters of a grinding process, and the process dimension parameters of the grinding process comprising a rotational speed ωm of the grinding disc and a rotational speed ωw of a workpiece or a rotational speed ωs of a sun wheel, a radius r of the workpiece, a radius R of the grinding disc, and an eccentric distance e; dividing the grinding disc is into regions; calculating trajectory densities of a point Pi on the workpiece relative to the different divided regions of the grinding disc; calculating areas of the different divided regions in proportion based on the trajectory densities on the different divided regions to obtain a grinding disc pattern; and obtaining a patterned grinding disc through machining or by arranging hot-pressed sintered blocks per unit area according to the grinding disc pattern.
The present invention relates to the field of precision machining of highly-wear-resistant workpieces. Disclosed is a design method for a grinding disc for a highly-wear-resistant workpiece. The design method comprises the following steps: (1) determining process dimensions and parameters of a grinding process; (2) partitioning a grinding disc into regions; (3) calculating the trajectory density of points on a workpiece with respect to each partition region of the grinding disc; (4) on the basis of the trajectory density of the regions, calculating the area of different regions proportionally, so as to obtain a grinding disc pattern; and (5) on the basis of the grinding disc pattern and by means of machining or arranging hot-pressed sintered blocks per unit area, obtaining a patterned grinding disc. The present invention can rapidly obtain grinding disc patterns on the basis of trajectory density distributions during grinding processes, thus having the capability of designing grinding discs with complex shapes, and effectively improves the wear uniformity of grinding discs during grinding processes while improving the surface profile accuracy of workpieces, shortening the grinding time and improving machining efficiency.
B24B 53/06 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
B24B 53/08 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
B24B 49/00 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
6.
Method for molecular sieve shaping by using rice husk as template
A method for using a molecular sieve shaped by rice husks as a template is provided. A method using a molecular sieve shaped by rice husks as a catalyst for a thermal cracking reaction for stearic acid is provided. A method for manufacturing a molecular sieve incorporating rice husks, the method includes the following steps. (1) mixing molecular sieve powder containing rice husks, a binder, and an extrusion aid to be homogeneous, then adding a peptizer, and mixing to be homogeneous to obtain a uniform mixture; (2) introducing water to the uniform mixture, mixing to be homogeneous, and performing a kneading process to shape a sticky conglomerate; (3) extruding the sticky conglomerate obtained in the step (2) with an extrusion device to obtain moist strips; and (4) drying, calcining, and shaping the moist strips obtained in the step (3) to obtain the molecular sieve incorporating the rice husks.
C01B 39/02 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereofDirect preparation thereofPreparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactantsAfter-treatment thereof
The present invention relates to the field of video coding. Disclosed are a fast H.266VVC screen content intra-frame CU division method and apparatus based on multi-task learning. The method comprises: acquiring a screen content video, and directly dividing a 128×128-sized CTU into 64×64-sized CUs; constructing a multi-task learning network model, wherein the multi-task learning network model comprises a backbone network, a first sub-network and a second sub-network, the backbone network being used for extracting CU features; inputting the CU features into the first sub-network and the second sub-network to obtain a CU division type and a coding mode, and comprehensively determining a prediction result in view of the coding mode and a prediction probability thereof, and the division type of an adjacent CU; inputting the 64×64-sized CUs into the trained multi-task learning network model, so as to obtain a first prediction result; and if the first prediction result indicates division, further dividing each 64×64-sized CU into four 32×32-sized CUs, and inputting the 32×32-sized CUs into the trained multi-task learning network model, so as to obtain a second prediction result. The problem of the complexity of H.266VVC screen content intra-frame coding being high is solved.
The present invention provides a graph-based resampling and gradient feature integrated reference point cloud quality assessment method and system. The method comprises: using a graph-based key point resampling method to perform key point extraction on an inputted reference point cloud; obtaining local neighborhood groups of the reference point cloud and a distorted point cloud by division by taking a key point as the center, and clustering points in each local area on the basis of Euclidean distances between the key point and other points in a coordinate space; and respectively extracting three-dimensional gradient amplitude features and three-dimensional gradient pattern features of the reference point cloud and the distorted point cloud to obtain an objective quality score of the distorted point cloud. The present invention has a wide range of applications and has high recognition accuracy, sensitivity and robustness.
A four-wheel independent driving system. The four-wheel independent driving system mainly comprises four wheels (4) driven by independent driving motors (3), two composite controllers (6, 7), a vehicle control unit (12), and four axle load sensors (5), wherein the axle load sensors (5) are used for respectively detecting the changes of the axle loads of the four wheels (4), the change of the working radius of each wheel (4) is determined after calculation by a control algorithm of the vehicle control unit (12), and then the output of the driving motors (3) is controlled by means of the composite controllers (6, 7) so as to control the rotation speeds of the corresponding wheels (4). By means of electric driving, compared with a conventional driving system, the driving system has high efficiency and low energy consumption, and causes no pollution; in addition, by detecting the change of the real-time rotation radius of each wheel, the rotation speed of the wheel is independently controlled, effectively reducing a large amount of parasitic power, thereby reducing the power loss.
B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
10.
ARTICULATED STEERING AND FRONT WHEEL STEERING COMBINED SYSTEM, AND WHEELED ENGINEERING MACHINERY
An articulated steering and front wheel steering combined system, and wheeled engineering machinery, relating to the technical field of steering systems. The steering system comprises a front frame (34) and a rear frame (33), wherein the front frame (34) is provided with a front wheel system, and the steering system further comprises a composite control system, wherein the composite control system comprises a control oil circuit, a control system, and a first articulated steering cylinder (2), a second articulated steering cylinder (3), a front wheel steering cylinder (5) and a locking cylinder (6) that are connected to the control oil circuit. According to the solution, by means of coupling of the articulated steering and front wheel steering system, the steering radius of the wheeled engineering machinery can be further reduced, and the maneuverability is further improved.
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B62D 12/00 - Steering specially adapted for vehicles operating in tandem or having pivotally connected frames
11.
FOUR-QUADRANT RADIAL PLUNGER HYDRAULIC DEVICE HAVING DOUBLE-VALVE FLOW DISTRIBUTION AND WORKING METHOD
The present invention relates to the field of radial plunger hydraulic devices. Provided is a four-quadrant radial plunger hydraulic device having double-valve flow distribution. The device mainly comprises a housing, several plunger assemblies, an eccentric main shaft rotatably arranged at one end of the housing, hydraulically controlled one-way valves in one-to-one correspondence with the plunger assemblies, two-way cartridge valves in one-to-one correspondence with the plunger assemblies, a convergence plate having a built-in directional sliding valve, and a flow distribution shaft. The present invention further provides a working method for a four-quadrant radial plunger hydraulic device having double-valve flow distribution. By means of the radial plunger hydraulic device, it is possible to achieve bidirectional rotation when the radial plunger hydraulic device is used as a hydraulic motor and a hydraulic pump, thereby solving the limiting problem of valve flow distribution when applied to a motor.
F03C 1/053 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
F03C 1/34 - Distribution members specially adapted for multiple-cylinder engines
F04B 1/053 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
A chemical-mechanical combined machining method for a silicon carbide surface, comprising the following steps: first mounting a grinding and polishing tool (1) and silicon carbide (2) on a machine table of grinding and polishing equipment, respectively, the grinding and polishing tool (1) comprising active metal and abrasive particles which are formed in a combined mode; then pressing the silicon carbide (2) to the surface of the grinding and polishing tool (1) under the action of an external force; finally enabling the grinding and polishing tool (1) rotating at a high speed to move relative to the silicon carbide (2), thereby generating high-speed friction and inducing the active metal and the silicon carbide (2) to have a chemical reaction; and removing a reaction layer by means of mechanical action between the abrasive particles and the silicon carbide (2), thereby forming a chemical-mechanical combined cycle machining mode, and implementing surface grinding and polishing of the silicon carbide (2).
A method of laser-curing and forming a honeycomb diamond grinding block made from fine-grained diamonds and a ceramic binding agent is provided. The method includes preparing a slurry, where components of the slurry, by mass ratios, include: 20-21 parts of photosensitive resin; 34.5-37 parts of aluminum-oxide powder; 4-5.5 parts of fine-grained diamond powder; 0.04-0.1 parts of a photoinitiator; a range of particle sizes of the fine-grained diamond powder is 6-8 μm; stirring the slurry to allow all components in the slurry to be fully mixed with each other to obtain a first printing material; feeding the first printing material into a light-curing printer to perform light-curing 3D printing to obtain a precursor of a finished product; and performing, by a high-temperature furnace, a degreasing operation and a high-temperature sintering treatment on the precursor to obtain the finished product of the honeycomb diamond grinding block.
C04B 35/00 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
B28B 1/00 - Producing shaped articles from the material
A metal surface micro-texture processing method based on mask biological jet, comprising the following steps: (1) microorganism culture: increasing the number and microbial activity of microbial communities, so that the concentration of high-oxidizability ions in a culture solution reaches an expected set; (2) mask preparation: designing and preparing a mask according to a micro-texture requirement; (3) surface pretreatment of a workpiece to be processed; (4) micro-texture processing; and (5) re-oxidizing the culture solution. According to the method in combination with a mask technology and a high-precision servo control system, the surface material of a workpiece is selectively removed, the processing of the texture pattern of a special-shaped workpiece can be achieved, and the applicability is high.
A method for preparing a plant-based hard capsule for rapid disintegration, the method comprises: weighing a coagulant aid, dissolving in distilled water at 75-90° C., and stirring to obtain a first solution; maintaining a temperature of the first solution at 75-90° C., adding a gel-forming agent, and stirring; adding a film-forming agent with a weight percentage of 5%-25%, stirring, finally adding a plasticizer by a weight percentage of 0-3%, and stirring until the film-forming agent and the plasticizer are completely dissolved to obtain a material solution; leaving the material solution to stand at 45-60° C. to obtain a gel solution; and cooling the gel solution to 40-50° C., dipping the gel solution for forming, and drying for 100-200 minutes under a condition of 20-35° C. and a 40%-60% relative humidity; and demoulding, cutting, and combining together by sleeving to obtain the plant-based hard capsule for the rapid disintegration.
Provided in the present invention are an engineering machinery mapping method and device, and a readable storage medium. The key points of the technical solution lie in: performing motion distortion correction on the current frame of a laser point cloud by using IMU data and an IMU odometer; extracting point-line and point-plane features according to the curvature of each point of the current frame of the laser point cloud, and matching a local map with the current frame of the laser point cloud; performing factor graph optimization on a key frame; correcting an IMU bias according to an outputted laser odometer, resetting an IMU pre-integrator, and outputting the IMU odometer; and when the current frame of the laser point cloud satisfies a loop closure detection condition, performing loop closure detection on the current frame of the laser point cloud by using a normal distribution transformation algorithm, and updating a global pose. In this way, a mapping problem in an engineering machinery degradation scenario is solved, and rapid mapping and positioning in a large scenario are realized.
G01C 21/20 - Instruments for performing navigational calculations
G01C 21/00 - NavigationNavigational instruments not provided for in groups
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
G01S 7/48 - Details of systems according to groups , , of systems according to group
G01S 17/86 - Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
17.
MOBILE MACHINE AND SELF-DRIVING PERCEPTION MAPPING SYSTEM FOR UNSTRUCTURED SCENARIOS THEREOF
Provided in the present invention are a mobile machine and a self-driving perception mapping system for unstructured scenarios thereof, which introduce environment elevation data to assist in a task of performing accurate segmentation with respect to boundaries between unstructured target objects, so as to solve the problems in traditional perception mapping systems of low edge discrimination capability, inaccurate recognition and the like with respect to unstructured environments, and introduce instance segmentation mask information to add to a mapping front end to assist in mapping, so as to solve the problems in traditional mapping SLAMs of low mapping robustness, lack of human-machine interaction capability, dynamic obstacle interference and the like which are caused by low matching efficiency in unstructured scenarios, thereby enhancing the perception capability of mobile machines in unstructured self-driving working scenarios.
A four-quadrant radial piston hydraulic device includes a housing, plunger assemblies, an eccentric spindle rotatably disposed on the housing, pilot-operated check valves one-to-one corresponding to the plunger assemblies, two-way cartridge valves one-to-one corresponding to the plunger assemblies, a distribution shaft and a confluence plate. A reversing slide valve is disposed on the confluence plate. A working method of a four-quadrant radial piston hydraulic device is also provided. When the radial piston hydraulic device is used as a hydraulic motor and a hydraulic pump, it is capable of realizing two-way rotation, which solves a limitation of valve flow distribution in motor application.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/053 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
F04B 1/053 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
F04B 53/16 - CasingsCylindersCylinder liners or headsFluid connections
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
19.
MICHELSON INTERFEROMETER-BASED LIQUID REFRACTIVE INDEX MEASUREMENT APPARATUS AND WATER DISPLACEMENT METHOD
A Michelson interferometer-based liquid refractive index measurement apparatus and water displacement method. The liquid refractive index measurement apparatus comprises a vertical plate (1) and a bottom plate (2) fixed perpendicular to each other. A helium-neon laser (3), a beam expander (4), a beam splitter (5), a compensation plate (6) and a movable reflecting mirror (7) are sequentially arranged on the vertical plate (1) along the same horizontal line. The vertical plate (1) is provided with a display screen (8) above the beam splitter (5). A first container (9) for storing a liquid and a liquid level control device (10) are provided on the bottom plate (2), the first container (9) is arranged below the beam splitter (5), and a reflector is placed at the bottom of the first container (9). The beam splitter (5) is used for refracting a light beam emitted by the helium-neon laser (3) into the first container (9). The reflector is used for refracting the light beam received by the first container (9) to the display screen (8). The liquid level control device (10) is used for controlling the liquid level height of the first container (9) to change the optical path of the light beam received by the first container, so that interference fringes formed by interference between the light beam and the other light beam are changed, and a liquid refractive index is deduced according to a liquid level height change value.
G01N 21/45 - RefractivityPhase-affecting properties, e.g. optical path length using interferometric methodsRefractivityPhase-affecting properties, e.g. optical path length using Schlieren methods
20.
Composite premix composition for improving milk production of lactating and methods thereof
A23K 10/30 - Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hayAnimal feeding-stuffs from material of fungal origin, e.g. mushrooms
A23K 20/158 - Fatty acidsFatsProducts containing oils or fats
The use of rice husks as a molecular sieve catalyst forming template. By using rice husks as a template, during a molecular sieve catalyst forming process, the mechanical strength of a product is increased, the texture performance thereof is improved, the cost of a forming binder is reduced, the comprehensive utilization of waste biomass resources can be realized, and environmental protection is promoted; moreover, when the use of a binder and a peptizing agent is reduced, the mechanical strength thereof is still higher than that of a formed body of a molecular sieve catalyst without a rice husk template.
C01B 39/02 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereofDirect preparation thereofPreparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactantsAfter-treatment thereof
B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
22.
Manufacturing method of diamond porous grinding block based on 3D printing and application thereof
A manufacturing method of a diamond porous grinding block based on 3D printing. The manufacturing method includes designing a 3D printing model of a grinding block unit cell with an adjustable porosity according to an internal cooling space for abrasive debris required in a grinding process, importing the 3D printing model of the grinding block unit cell into a MAGICS software, filling a frame of a 3D printing model of a diamond porous grinding block with a plurality of 3D printing models of grinding block unit cells; preparing mixed powder of diamond abrasive particles and an aluminum alloy binder as printing powder, performing 3D printing to the 3D printing model of the diamond porous grinding block by an SLM technology to obtain the diamond porous grinding block. The diamond porous grinding block is configured to form a diamond structure grinding disc for grinding a semiconductor substrate.
B24D 3/10 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic for porous or cellular structure, e.g. for use with diamonds as abrasives
B22F 1/142 - Thermal or thermo-mechanical treatment
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
Disclosed are a recycled aggregate preparation apparatus having enhanced carbon sequestration and based on crushed return material, and a method. The apparatus comprises: a screw conveyor, a throw rotor, a screening drum, a material return drum and a carbon dioxide input pipe; the screw conveyor comprises a raw material inlet, a fine aggregate inlet and a discharge port; the screening drum comprises an inner drum and an outer drum, and the throw rotor accelerates and throws aggregate into the inner drum, causing the aggregate to collide and be crushed; the material return drum is sleeved outside of the screw conveyor, the fine aggregate inlet is located in the material return drum, and material return blades of the material return drum drive fine aggregate to be fed from the fine aggregate inlet into the screw conveyor; and an inlet end of the carbon dioxide input pipe is communicated with the interior of the screening drum. The aggregate collided, crushed and shaped, and during this process fully reacts with carbon dioxide, causing the carbon dioxide to be absorbed and sequestered, thereby improving the carbonization of the recycled aggregate and preparing a high-quality recycled aggregate.
B02C 19/00 - Other disintegrating devices or methods
B02C 23/16 - Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
24.
CONCRETE STIRRING DEVICE AND METHOD FOR REINFORCING CARBON SEQUESTRATION
Disclosed in the present invention are a concrete stirring device and method for reinforcing carbon sequestration. The device comprises a main stirring kettle and a pre-stirring kettle; the pre-stirring kettle comprises a barrel, a material gate mechanism, and a material raising mechanism; a powder material inlet and a communication port are formed on the upper side and the lower side of the barrel; the pre-stirring kettle is connected to the main stirring kettle by means of the communication port; the barrel is further provided with a carbon dioxide inlet and a water mist inlet; the material gate mechanism comprises a material gate drive and an arc material gate plate; a notch part is formed between two ends of the arc material gate plate; the material gate drive drives the arc material gate plate to rotate, such that the notch part circularly passes through the powder material inlet and the communication port; and the material raising mechanism comprises a material raising drive and material raising blades. The pre-stirring kettle is provided, such that added cement powder is pretreated in a high-humidity, high-pressure and high-carbon-dioxide environment, a large number of calcium carbonate crystal nucleuses are generated after pretreatment, then calcium carbonate crystals can be rapidly generated in the main stirring kettle, the reaction speed is increased, and the concrete strength is enhanced.
B28C 5/14 - Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials the stirrers having motion about a horizontal or substantially horizontal axis
B28C 5/08 - Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
B28C 7/00 - Controlling the operation of apparatus for producing mixtures of clay or cement with other substancesSupplying or proportioning the ingredients for mixing clay or cement with other substancesDischarging the mixture
B28C 7/06 - Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
B08B 9/093 - Cleaning of containers, e.g. tanks by the force of jets or sprays
25.
DEEP LEARNING-BASED MUCK CLASSIFICATION PROCESSING GUIDANCE METHOD AND APPARATUS, AND READABLE MEDIUM
Disclosed are a deep learning-based muck classification processing guidance method and apparatus, and a readable medium. The method comprises: obtaining a muck image, acquired at an entrance of a muck yard, of muck in a muck truck compartment; inputting the muck image into a trained image classification model to obtain an initial classification result, and generating a corresponding first guidance indication according to the initial classification result; in response to determining that the initial classification result is first-type muck or second-type muck, inputting the muck image into a trained semantic segmentation model to obtain a segmented muck image, processing the segmented muck image to obtain a processing result, and determining the proportion of the area of the first-type muck or fourth-type muck according to the processing result; further determining the recycling value of the muck corresponding to the muck image, generating a second guidance indication that the muck corresponding to the muck image has recycling value or has no recycling value when being the first-type muck or fourth-type muck, and generating a final guidance indication by combining the first guidance indication and the second guidance indication. Muck classification can be realized, and good economic benefits are achieved.
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
26.
Method for testing interfacial tribochemical reaction between abrasive and diamond wafer
A method for testing an interfacial tribochemical reaction between a diamond wafer and active metal abrasive or metal oxide abrasive is provided. A surface of a diamond indenter used in a nano scratch tester is coated with a layer of the active metal abrasive or the metal oxide abrasive with uniform and controllable thickness by magnetron sputtering, and an interface interaction between the layer of the active metal abrasive or the metal oxide abrasive and the diamond wafer is controlled by a scratch test of the diamond wafer. Chemical components of an interaction section on a surface of the diamond wafer are analyzed by the scanning probe micro Raman spectrometer.
The present disclosure relates to a half-cast mark identification and damaged flatness evaluation and classification method for blastholes in tunnel blasting, including the following steps: S1-2: photographing first and second contrast images as well as a half-cast mark image after blasting; S3-6: performing denoising, gray-scale processing and binary processing on the above images, and identifying a boundary of a half-cast mark in each of the images; S7-9: determining a flatness damage variable, a quantitative relation among an area of a half-cast mark region, the damage variable and a fractal dimension, and a damage value of the half-cast mark image; S10-11: forming five-dimensional (5D) eigenvectors to obtain multi-dimensional digital information features of the images; and S12-13: selecting eigenvectors of 60 images as training data to input to a naive Bayes classifier (NBC), and taking eigenvectors of remaining 30 images as classification data to input the above well-trained NBC for classification.
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
An integrated device for grinding and polishing a diamond and a method thereof are provided. The integrated device for grinding and polishing the diamond comprises a base device and a grinding and polishing device, the base device comprises a base configured rotate around a Z-axis, the base comprises a fixture configured to clamp the diamond, the grinding and polishing device comprises a shaft disposed along the Z-axis, the outer polishing wheel surrounds the inner grinding wheel, the shaft drives the inner grinding wheel and the outer polishing wheel to rotate together, an upper and lower position relationship between the inner grinding wheel and the outer polishing wheel along the Z-axis is configured to be adjusted, and the diamond on the fixture is ground and polished by rotations of the inner grinding wheel and the outer polishing wheel, feeding, and a rotation of the base.
A low melting-point porous ceramic material, a sintering temperature of the low melting-point porous ceramic material is 680-830° C., a porosity of the low melting-point porous ceramic material is 24-42%, raw materials of the low melting-point porous ceramic material comprise a binder (i.e., a temporary binder) and powder of raw materials.
C04B 35/14 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silica
C04B 35/636 - Polysaccharides or derivatives thereof
C04B 35/626 - Preparing or treating the powders individually or as batches
The present disclosure provides a Tripterygium wilfordii composition for inhibiting a drug-resistant cancer. The composition is prepared by triptolide (TP) with any one or two compounds selected from the group consisting of 1β-(E-cinnamoyloxy)-4a-hydroxy-5a,7β,11-triacetoxy-8β-nicotinoyloxy-dihydroagarofuran, Demethylzeylasteral, Triptobenzene R, (3S,4S,5R,10S)-3,19-dihydroxy-7-ox-oabieta-8,11,13-triene, and Triptobenzene B. In the present disclosure, the composition has a lower toxicity and an enhanced drug effect for inhibiting proliferation of drug-resistant tumor cells than those of the TP. Compared with the single TP, the composition has an effect of attenuation and synergia.
A method for measuring a thickness and optical constants of a multi-layer film comprises the following steps: 1: depositing films on a substrate to form a multi-layer film; 2: measuring an ellipsometric spectrum of the multi-layer film; 3: when the film layer of the multi-layer film is the diamond film, step 41 is executed; when the film layer of the multi-layer film is the diamond-like film, steps 42, 5, and 6 are executed; 41: obtaining optical constants and a thickness of the film layer of the multi-layer film; 42: selecting a spectral region defining a transparent section of the film layer of the multi-layer film, and obtaining optical constants and a thickness of the film layer of the multi-layer film; 5: adjusting an amplitude and a width of an oscillator model according to the ellipsometric spectrum; and 6: evaluating a difference between an experimental value and a fitted value.
G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01B 15/02 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
BAYECAO HEALTH INDUSTRY RESEARCH INSTITUTE (XIAMEN) CO., LTD. (China)
Inventor
Tang, Xuchong
Zhao, Yingwei
Li, Xuan
Cao, Liping
Abstract
A synthesis method for nuciferine or a derivative thereof, a nuciferine derivative and an application thereof. A compound having a structure shown in formula IV and R-X undergo a Schotten-Baumann reaction, and then nuciferine having a structure shown in formula VI or a derivative thereof is obtained by means of carbon-hydrogen bond activation. Further, the compound having the structure as shown in formula IV is obtained by an acyl chlorination reaction, a nucleophilic substitution reaction, a Bischler-Napieralski reaction, and a reduction reaction with 2-bromophenylacetic acid as a starting material. The nuciferine derivative can be used for preparing lipid-lowering drugs. The compound having the structure shown in formula IV and the nuciferine derivative having the structure shown in formula VI are shown as follows: formula IV and formula VI.
Provided in the present invention are a torque elevation method, apparatus and device for an electric motor, and a readable storage medium. The method comprises: acquiring a rotation speed feedback value of an electric motor, and according to the rotation speed feedback value, determining whether the electric motor is in a working condition of stalling; when it is determined that the electric motor is in the working condition of stalling, acquiring the present position angle signal of the electric motor, according to the position angle signal, determining the maximum current phase of the electric motor under the working condition of stalling, and generating a current amplitude of the maximum current phase which corresponds to the maximum current; according to the position angle signal and an interval critical angle signal corresponding to the position angle signal, generating an adjustment amount which corresponds to a control angle of the electric motor during stalling; and acquiring an MTPA control angle, and according to the adjustment amount, the MTPA control angle, and the current amplitude of the maximum current phase, generating the optimum control angle, during stalling, which is used for controlling the electric motor. When an electric motor is stalled in different position intervals within one period, the output torque of the electric motor can be elevated to the utmost without increasing the costs and increasing the risk of damage to the electric motor.
H02P 21/22 - Current control, e.g. using a current control loop
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
H02P 29/024 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
H02P 29/40 - Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
34.
CHEMICAL-MECHANICAL COMBINED MACHINING METHOD FOR SILICON CARBIDE SURFACE
A chemical-mechanical combined machining method for a silicon carbide surface, comprising the following steps: first mounting a grinding and polishing tool (1) and silicon carbide (2) on a machine table of grinding and polishing equipment, respectively, the grinding and polishing tool (1) comprising active metal and abrasive particles which are formed in a combined mode; then pressing the silicon carbide (2) to the surface of the grinding and polishing tool (1) under the action of an external force; finally enabling the grinding and polishing tool (1) rotating at a high speed to move relative to the silicon carbide (2), thereby generating high-speed friction and inducing the active metal and the silicon carbide (2) to have a chemical reaction; and removing a reaction layer by means of mechanical action between the abrasive particles and the silicon carbide (2), thereby forming a chemical-mechanical combined cycle machining mode, and implementing surface grinding and polishing of the silicon carbide (2).
B24B 7/22 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
B24B 41/06 - Work supports, e.g. adjustable steadies
B24B 7/04 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor involving a rotary work-table
B24B 7/06 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor involving conveyor belts, a sequence of travelling work-tables or the like
H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
35.
Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof
The present disclosure relates to a radial piston hydraulic device distributing flow by pilot operated check valves and an operating method thereof. The radial piston hydraulic device includes a housing, a plurality of piston assemblies, a main shaft, first pilot operated check valves, second pilot operated check valves, and a valve plate. The first pilot operated check valves have a same number as the plurality of piston assemblies and are one-to-one corresponding to the plurality of piston assemblies. The second pilot operated check valves have a same number as the plurality of piston assemblies and are one-to-one corresponding to the plurality of piston assemblies. The radial piston hydraulic device can be used not only as the hydraulic motor, but also as a hydraulic pump, and can be used in a hydraulic system that need to realize power recovery functions.
F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 15/18 - Combined units comprising both motor and pump
36.
METHOD FOR MEASURING THICKNESS AND OPTICAL CONSTANTS OF DIAMOND FILM
First, it is judged whether the diamond film is the single-crystal diamond film or the polycrystalline diamond film according to ellipsometric spectrum data and absorption spectrum data, and different calculation methods are selected to obtain the optical constants and the thickness of the diamond film according to spectral data (e.g., the ellipsometric spectrum data and the absorption spectrum data). Additionally, in the single-crystal diamond film, the optical constants and the thickness of the diamond film are obtained through calculation using the Cauchy model. In the polycrystalline diamond film, the spectral region is selected, and the optical constants and the thickness of the diamond film are obtained through calculation according to the oscillator model and the evaluation function MSE.
G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
A multi-phase motor control method, apparatus and device, and a readable storage medium. The method comprises: obtaining current operation parameters of a whole electric loader, and generating a target rotation speed of a multi-phase motor according to the operation parameters, wherein the operation parameters comprise a current load, a main pump pressure, and a grip opening degree (S101); determining a target magnetic flux of the multi-phase motor according to the target rotation speed and a rated rotation speed (S102); acquiring a current rotation speed of the multi-phase motor, and determining a target torque of the multi-phase motor according to the current rotation speed and the target rotation speed (S103); and obtaining a current torque and a current magnetic flux of the multi-phase motor, and according to the current torque, the target torque, the current magnetic flux and the target magnetic flux, directly calculating and generating, in a stator static coordinate system, a torque and a magnetic flux linkage compensation voltage for controlling the multi-phase motor (S104), aiming at satisfying quick response requirements of the electric loader under different complex working conditions, satisfying a power demand of the whole electric loader, better matching the working characteristics of the loader, and improving the working performance of the loader.
A distributed all-electric drive system and a loader. The distributed all-electric drive system comprises: a vehicle frame, an electric driving mechanism arranged on the vehicle frame, an electric steering mechanism, a working mechanism, an energy management unit, a controller (11) and an operating mechanism. The operating mechanism is electrically connected to an input end of the controller (11), and an output end of the controller (11) is electrically connected to the electric driving mechanism, the electric steering mechanism, a control end of the working mechanism and a control end of the energy management unit; an output end of the energy management unit is electrically connected to the electric driving mechanism, the electric steering mechanism and a power supply input end of the working mechanism; the electric driving mechanism comprises a driving assembly and a transmission mechanism, an output end of the driving assembly is connected to the transmission mechanism, and an output end of the transmission mechanism is used for being connected to a driving wheel arranged on the vehicle frame; and the electric steering mechanism comprises a bogie (19) hinged to the vehicle frame, and an electric cylinder mechanism hinged to the bogie (19). The distributed all-electric drive system and the loader solve the problem of low operation efficiency of existing loaders.
A method for preparing a flexible sol-gel polishing block, the method comprises: (1) adding a gel agent and a 20 μm diamond abrasive into deionized water, and stirring to even to obtain a first material; (2) adding carbon fiber into the first material obtained in the step 1, and mixing to even to obtain a second material; (3) injecting the second material obtained in the step 2 into a mold, and curing to obtain a cured gel; and (4) drying the cured gel to obtain the flexible sol-gel polishing block.
An engineering machine electro-hydraulic composite energy storage driving system and a control method of the system. The system comprises: a plurality of pressure sensors, a generator controller (19) and an operating electric motor controller (21), which feeds back a control signal to a complete machine controller (18). The generator controller (19), the operating electric motor controller (21), a proportional reversing valve (8) and an electromagnetic reversing valve (15) are connected to the complete machine controller (18) as signal output ends. By means of the present system, when an electrically driven engineering machine operates under a suddenly changed load condition, the output current of a power battery system is kept at a healthy and stable optimal value, such that the problem of battery life reduction caused by large-current discharge of a power battery caused by a suddenly changed load of the engineering machine is avoided, the use cycle period of the power battery is prolonged, and the defect of a slow power response of a power battery driving system is overcome.
A radial piston hydraulic device distributed by pilot operated check valves includes a housing, a plurality of piston assemblies, a main shaft, the rotating shaft, first pilot operated check valves having a same number with the plurality of piston assemblies and one-to-one corresponding to the plurality of piston assemblies, and second pilot operated check valves having a same number with the plurality of piston assemblies and one-to-one corresponding to the plurality of piston assemblies. The housing includes a plurality of piston chambers, a rotating shaft chamber, a high-pressure oil passage, and a low-pressure oil passage. Each of the plurality of piston assemblies is slidable up and down in a corresponding piston chamber of the plurality of piston chambers. The main shaft is rotatably connected to the housing and is connected to the plurality of piston assemblies in a transmission way.
Disclosed in the present invention are a disk brush system capable of performing automatic pressure and position adjustments on the basis of road condition identification. Different pavement adhesion coefficients and garbage hierarchical levels can be identified according to a target detection platform, the ground contact pressure of a disk brush is automatically adjusted in real time by means of a pump control system of a servo electric motor changing the torque of the servo electric motor, and the work of the disk brush of a sweeper in an adaptively adjusted manner in a specified stage is realized by using the pressure maintaining characteristic. Moreover, the distance between the disk brush and kerb stones is measured by means of identification, such that the sweeping operation of the disk brush with bristles being in contact with the kerb can be realized by means of a displacement adjustment system. In addition, the range of the degree of concentration of garbage on a pavement can be identified, a positional change of a disk brush system in a direction perpendicular to a traveling route can be realized by means of the displacement adjustment system and according to different position information, and the automatic avoidance of a roadside obstacle can be realized according to position information of the roadside obstacle.
An electro-hydraulic parallel driving engineering machinery locomotion system, comprising a mechanical transmission part (100), an electric driving part (200), a hydraulic driving part (300) and a locomotion execution part. The mechanical transmission part (100) comprises a power input shaft (109), a hydraulic input shaft (110), a power output shaft (111), a first transmission shaft (101), a second transmission shaft (102), a third transmission shaft (103), a fourth transmission shaft (104), a fifth transmission shaft (105), a sixth transmission shaft (106), and a seventh transmission shaft (107) which are arranged in parallel. The system integrates the advantages of an electric driving system and a hydraulic driving system, adopts an electric driving part and the hydraulic driving part to jointly drive mechanical locomotion, comprehensively exerts the advantages of good electric-transmission speed regulation performance and high hydraulic transmission power density, and is relatively low in energy consumption, sufficient in driving force and good in economy.
Disclosed in the present invention is a preparation method for a flexible sol-gel polishing block, comprising the following steps: (1) putting a gelling agent and W20 diamond abrasive into deionized water, and uniformly stirring; (2) adding 400-mesh carbon fibers into the material obtained in step (1) and uniformly mixing; (3) slowing injecting the material obtained in step (2) into a mold for curing, so as to obtain a curved gel; and (4) drying the described cured gel to obtain a flexible sol-gel polishing block. According to the present invention, when preparing a sol-gel matrix, a specific proportion of the carbon fiber is added, so that the prepared flexible sol-gel polishing block has a porous structure, and a polishing effect is improved; and the surface of the flexible sol-gel polishing block prepared in the present invention is no longer coated with only one layer, but the whole matrix can be used for polishing, and thus, the service life of a polishing tool is prolonged.
A radial plunger hydraulic device using hydraulic control one-way valves for flow distribution, and a working method thereof. The radial plunger hydraulic device comprises a housing (200), several plunger assemblies, a spindle (300), first hydraulic control one-way valves of the same number as and corresponding to the plunger assemblies on a one-to-one basis, second hydraulic control one-way valves with the same number as and corresponding to the plunger assemblies on a one-to-one basis, and a flow distribution plate (400). The radial plunger hydraulic device using hydraulic control one-way valves for flow distribution provides a new flow distribution mode, and owing to the excellent sealing performance of the hydraulic control one-way valves, a hydraulic motor can work under high pressure and achieve a high volumetric efficiency. The device can be used as both a hydraulic motor and a hydraulic pump, and can be used in a hydraulic system that needs to achieve a power recovery function.
Disclosed is a method for detecting the interfacial frictional chemical reaction between active metal or metal oxide abrasive grains and a diamond wafer substrate, in which a layer of active metal abrasive grains or a metal oxide shell layer having uniform and controllable thickness is coated on the surface of a diamond indenter for a nanoindentation scratch tester by means of magnetron sputtering, and the interfacial interaction relationship between the abrasive grains and the wafer is controlled by means of a scratch experiment with the diamond wafer substrate, and then the chemical components in the interaction region of the diamond wafer substrate surface are detected by a scanning probe micro-Raman spectrometer, so as to clearly determine the mechanism of the interfacial frictional chemical reaction between the active abrasive grains and the wafer substrate. The method is simple to operate and has good application prospects in the field of high-efficient ultra-precision processing of semiconductor wafer substrates.
Carbon atoms of a single-crystal diamond and active abrasives are used to produce a chemical reaction to form carbides under a specific grinding condition of no higher than a graphitization temperature, and a hard abrasive is used to remove the carbides.
B24B 19/22 - Single purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
Forming an amorphous carbon layer due to lattice distortion of carbon atoms on a surface layer of a single-crystal diamond under a mechanical shear function of a hard abrasive, and generating a chemical reaction between the amorphous carbon layer on the surface layer and the reactive abrasive to achieve quickly removing carbon atoms on the surface layer of the single-crystal diamond due to a local high temperature between abrasive grains and the single-crystal diamond caused by friction at a high speed.
A machining apparatus for integrated grinding and polishing of diamond, comprising a rack, a base device (1) and a grinding and polishing device (2); the base device (1) comprises a slide base capable of being fed along a Y-axis with respect to the rack and a base (11) capable of being rotatably connected to the slide base around a Z-axis, wherein a clamp (12) capable of clamping diamond (3) is mounted on the base (11); the grinding and polishing device (2) comprises a main shaft arranged along the Z-axis, wherein an inner ring grinding wheel (21) and an outer ring polishing wheel (22) are sleeved on the main shaft, and when the main shaft rotates, the inner ring grinding wheel (21) and the outer ring polishing wheel (22) can be driven to rotate together; and the diamond (3) is ground and polished by means of rotation of the inner ring grinding wheel (21) and the outer ring polishing wheel (22), feeding of the slide base and rotation of the base (11). The machining apparatus can integrate the grinding and polishing of diamond into one process of machining, and the diamond has less surface scratch damage and uniform surface quality. Also provided is a machining method.
A robot polishing system for stone polishing. The robot polishing system comprises a base (1), a robot apparatus (2), a polishing mechanism (3) and a workbench mechanism (4); the robot apparatus (2) comprises a six-axis series robot (21) and a robot control system (22); the polishing mechanism (3) comprises an electric motor clamping device (31), a driving electric motor (32), a polishing disc (33) and a cooling water device (34); and the workbench mechanism (4) comprises a circular rotary table (41), a rotary table electric motor (42) and a clamp (43). The circular rotary table (41) drives a workpiece to rotate, and the driving electric motor (32) drives the polishing disc (33) to rotate so as to polish the workpiece. The polishing system has a high polishing precision and efficiency.
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
B24B 45/00 - Means for securing grinding wheels on rotary arbors
51.
METHOD FOR MEASURING GLOSS UNIFORMITY OF ARC-SHAPED SURFACE
A method for measuring the gloss uniformity of an arc-shaped surface, comprising: selecting an arc-shaped track (2) spaced in parallel to the curvature of an arc-shaped surface (1) to be measured, wherein a camera clamping device (3) is mounted on the arc-shaped track (2), and a camera is mounted on the camera clamping device (3); providing, at the edge of a region to be measured of said arc-shaped surface (1), a label (11) with a scale, wherein the scale direction of the label (11) is parallel to the curvature of said arc-shaped surface (1), and the scale of the label (11) is located at the edge of a photographing region of a camera; the camera moving along the arc-shaped track (2), and during the movement, photographing a picture each time the camera moves by a predetermined distance; taking the scale of the label (11) as a reference, splicing the photographed pictures to obtain an arc-shaped surface expanded view; performing gray-scale processing on the arc-shaped surface expanded view to obtain a gray-scale matrix and a gray-scale picture; setting a threshold n, and searching for each gray-scale value in the gray-scale matrix, so as to obtain a binary image; taking a certain region to collect statistics of a proportion of black pixel points, and determining the gloss distribution uniformity of a surface according to the statistics of the proportion. The method has the advantages of having an accurate result, being scientific and having low costs.
A low-melting-point porous ceramic material and a preparation method therefor. The porous ceramic material has a firing temperature of 680-830ºC and a porosity of 24-42%, and the raw materials of the porous ceramic material are composed of a temporary binder and a raw material powder. With the synergistic effect of all the raw material components, the resulting product has advantages such as a simple sintering process, a good mechanical strength, no need to add a pore-forming agent and being capable of generating pores, such that problems such as a mismatched refractoriness between the binder and the pore-forming agent, a poor heat dissipation capacity and a poor air permeability are effectively solved, and the service life and the holding force of the porous ceramic material can be improved, wherein the firing temperature thereof is only 680-780ºC, and the porosity can reach up to 42% without the addition of a pore-forming agent, while maintaining a good compressive strength, bending strength and hardness.
A method for detecting the thickness and optical properties of a multilayer film. The method comprises: S1. sequentially depositing thin films on a substrate to form a multilayer film, wherein the thin films of the multilayer film include a diamond-like thin film and a diamond thin film; S2. measuring an ellipsometric spectrum of the multilayer film; S3. judging whether a thin film is a diamond thin film or a diamond-like thin film, and performing step S41 if the thin film is a diamond thin film and step S42 if the thin film is a diamond-like thin film; S41. using Cauchy model computation to obtain the optical constant of the thin film within a full waveband and the thickness of the thin film; S42. selecting a transparent area in a section of the thin film, and using Cauchy model computation to obtain the optical constant of the thin film within the waveband range and the thickness thereof; S5. adding a dielectric constant oscillator model to an absorption spectrum region of the diamond-like thin film, and adjusting the amplitude and width of an oscillator according to the ellipsometric spectrum; and S6. judging the difference between an experimental value and a fit value by means of the evaluation function MSE to thereby determine the structure of the multilayer film and the optical constant of each layer of a thin film and the thickness of the thin film, wherein the optical constant includes the refractive index and the extinction coefficient. Further disclosed is a broad spectrum ellipsometer using the method for detecting the thickness and the optical properties of a multilayer film.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
54.
METHOD FOR MEASURING THICKNESS AND OPTICAL CONSTANTS OF DIAMOND FILM
A method for measuring the thickness and optical constants of a diamond film, comprising: determining, according to ellipsometric spectral data and absorption spectral data, whether a diamond film is a single-crystal diamond film or a polycrystalline diamond film; and selecting different calculation techniques according to the spectral data to obtain the thickness and optical constants of the film. The method can be used to acquire the refractive index and thickness of a film, and to acquire an extinction coefficient thereof. For a single-crystal diamond film, a Cauchy model is used to calculate the thickness and optical constants of the film, and for a polycrystalline diamond film, a wavelength band is selected, and then calculation is performed according to an oscillator model and an MSE evaluation function so as to obtain the thickness and optical constants of the film. The method can be used to measure single-crystal and polycrystalline diamond films and to acquire the thickness and optical constants thereof such as the refractive index and extinction coefficients. The method achieves high measurement accuracy, and reduces measurement time.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
A method for grinding a diamond substrate, the method comprising grinding the diamond substrate by means of a grinding disk on which a soft abrasive capable of performing a solid phase chemical reaction with diamond is consolidated, and applying a transverse ultrasonic vibration with an amplitude of 1-20 μm and a frequency of 30-50 kHz along the radial direction of the grinding disk. By means of the transverse-ultrasonic-vibration-assisted friction contact between the soft abrasive and the diamond, the rate of the solid phase chemical reaction between the diamond and the soft abrasive in a contact area is promoted, and the grinding efficiency is greatly improved.
B24B 1/04 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
B24B 9/16 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds, of jewels or the likeDiamond grinders' dopsDop holders or tongs
56.
FLUORESCENT REDUCED GRAPHENE OXIDE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
A fluorescent reduced graphene oxide, and a preparation method therefor and an application thereof. The preparation method comprises the following steps: mixing 2-furfurylamine with reduced graphene oxide, and carrying out a grafting reaction in a protective atmosphere to obtain fluorescent reduced graphene oxide. The fluorescent reduced graphene oxide has super-strong sensitivity and selectivity and good thermal stability on Fe3+, and has stable fluorescence intensity under the condition that the pH value is 1-13.
An insulating polyvinyl alcohol composite heat-conducting film and a preparation method therefor. The composite heat-conducting film comprises a polyvinyl alcohol-graphene layer and polyvinyl alcohol layers located on both sides of the polyvinyl alcohol-graphene layer. The thickness of the polyvinyl alcohol-graphene layer is 6-100 μm, and the thicknesses of the polyvinyl alcohol layers are independently 0.1-3 μm. The composite heat-conducting film has a "sandwich" structure, both sides of the composite heat-conducting film are polyvinyl alcohol layers, the surface does not contain graphene, and the middle layer is a polyvinyl alcohol-graphene layer, so that the composite heat-conducting film has excellent heat-conducting properties and good flexibility.
A rammed earth and wood beam joint (6) bending resistance and deformation performance testing device and a using method thereof. The testing device comprises: a confinement mechanism (5), which comprises an accommodating cavity and a top pressing plate (16); a bending moment loading mechanism (1), which comprises a first balancing reaction frame (9) and a bending moment applier (7) capable of vertically pulling up or pressing a suspended end of a wood beam (21) to apply a positive bending moment or a negative bending moment to a rammed earth and wood beam joint (6); an axial force loading mechanism (2), which comprises a second balancing reaction frame (91) and an axial force applier (8) capable of applying an axial force to the top pressing plate (16) to further transfer the axial force to a rammed earth block (20), thereby simulating a gravity effect in the vertical direction; and a side pressure loading mechanism (3), capable of applying pressure to a side surface of the rammed earth block (20) and located in the accommodating cavity. The testing device can be quickly assembled and disassembled and can be repeatedly used for multiple times, facilitates the application of load effects of rammed earth and wood beam joints in all directions, and effectively prevent rammed earth blocks from being crushed in the repeated use process.
A method for preparing functionalized graphene. (1) Flake graphite and a dienophile or a diene are mixed in an organic solvent uniformly to obtain a mixed solution. (2) In an inert atmosphere or under vacuum, the mixed solution obtained in step (1) is subjected to graphite exfoliation and Diels-Alder (DA) reaction in a mechanical exfoliation device to obtain a crude product. (3) The crude product obtained in step (2) is subjected to heat preservation to obtain the functionalized graphene.
A GIS-based scenic spot facility layout analysis method, comprising the following steps: importing obtained data into a GIS platform; selecting a real-time population big data sampling point and a most adjacent service facility by means of a GIS, and calculating an actual distance between the two; calculating a coupling degree between the real-time population sampling point and the service facility; graphically expressing the coupling degree so as to output a final scenic spot facility layout analysis result. The method has the advantages of being high in precision, high in operability and the like, a coupling relationship between the service facilities and the population distribution in the scenic spot range is accurately reflected, so that a basis is provided for layout of service facilities.
Disclosed is a method for polishing a large-size single crystal diamond. When carbon atoms of a surface layer of the large-size diamond undergo the mechanical shearing action of a hard abrasive, lattice distortion occurs to produce an amorphous carbon layer, and subsequently, since a local high temperature is generated between abrasive grains and the diamond under high-speed friction, a chemical reaction occurs between the reactive abrasive grains and the amorphous carbon on the surface of the diamond, so as to achieve the aim of rapidly removing the carbon atoms from the surface layer of the diamond. This method can achieve efficient ultra-precision polishing of the diamond and a nano-scale surface roughness, without causing damage to the surface of the diamond. This flexible polishing method is suitable for ultra-precision polishing of the large-size single crystal diamond.
B24B 29/02 - Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
Provided is large-size single crystal diamond grinding method, in which a carbide is generated by chemical reaction of carbon atoms and active abrasives of the large-size single crystal diamond under specific grinding conditions, and then the generated carbide is removed by using hard abrasives, to obtain high-efficiency and high-quality ground diamond surface. The grinding fluid is deionized water, has no pollution to the environment, and has a grinding speed much lower than that of dynamic friction processing. Different from the conventional diamond graphitization removal method, the grinding method can obtain the diamond surface with lower surface roughness, fewer cracks and shallower grooves, which can reduce the processing cost.
B24B 19/22 - Single purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
The present disclosure discloses a method for detecting single strand breaks (SSBs) in DNA based on the following steps. First, DNA of interest is fragmented with a method that generates 3′ ends that cannot be tailed. Second, the available 3′ ends of the fragmented DNA corresponding to the pre-existing breaks are tailed. Third, SSBs are captured and their positions are identified genome-wide based on the following steps: (1) the tailed fragments are linearly amplified using a chimeric 5′-DNA-RNA-3′ primer; (2) the products of primer extension are tailed at the 3′ ends; (3) the desired products are amplified by PCR with oligonucleotides containing Illumina® adaptor sequences complementary to both tails and subjected to next-generation sequencing (NGS); 4) finally, positions of SSBs are revealed through the analysis of sequencing results.
Disclosed is a method for preparing a functionalized graphene on a large scale, the method involving: in an inert environment, adding flaky graphite and a dienophile or a diene to an organic solvent, blending same, and stirring same to obtain a mixed solution; and then placing the mixed solution in a liquid phase mechanical stripping apparatus, and directly subjecting the resultant stripping reaction solution to a temperature holding treatment in the liquid phase mechanical stripping apparatus in order to prepare the functionalized graphene. Compared with existing techniques for preparing a functionalized graphene dispersion by means of a mechanical method, the present invention proposes using a combination of liquid phase mechanical stripping and a Diels-Alder reaction, such that functional regulation can be realized by selecting different dienes or dienophiles. The flaky graphite undergoes a reaction, efficient mixing and effective intercalation with the diene or dienophile in a liquid phase stripping system while receiving a shear and impact under the action of a mechanical force, and same is then subjected to a simple temperature holding treatment, so that the functionalized graphene is prepared in one step. The method is simple and efficient.
Disclosed are a graphene conductive ink and a preparation method therefor. The graphene conductive ink consists of a self-stabilized and dispersed graphene nanomaterial, a mixed solvent of alcohol and water, and an ink binder at the mass ratio of 2-4:50-100:1-2, wherein the self-stabilized and dispersed graphene nanomaterial is prepared from sodium p-aminobenzenesulfonate, natural flake graphite, and the mixed solvent of alcohol and water by means of a liquid phase exfoliation method; sodium p-aminobenzenesulfonate actions on the surface of graphene by means of π-π conjugation, physical adsorption, and chemical grafting. The graphene conductive ink of the present invention is stable in dispersion, high in conductivity, excellent in printability, excellent in flexibility and the like, and is expected to be used for printing various flexible electronic devices.
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
C09D 11/03 - Printing inks characterised by features other than the chemical nature of the binder
66.
SELF-STABILIZING DISPERSED GRAPHENE NANO-MATERIAL AND PREPARATION METHOD
A self-stabilizing dispersed graphene nanomaterial and a preparation method. Said nano-material is made of sodium p-aminobenzene sulfonate, natural flake graphite and an alcohol-water mixed solvent by means of a liquid phase exfoliation method. Sodium p-aminobenzene sulfonate acts on the graphene surface by means of π-π conjugation, physical adsorption and chemical grafting. The self-stabilizing dispersed graphene nano-material has good aqueous dispersion ability and excellent electrical conductivity, is easy for industrialized production, and has great potential in graphene applications.
An interactive method for generating strokes with Chinese ink painting style, includes steps: obtaining an image including a pattern as an image object; obtaining a delimiting operation delimiting at least one stroke sample on a pre-stored ink painting sample, obtaining a basic outline forming a preliminary basic path of a stroke to be generated and drawn by a user on the image object; correcting stroke outlines in the stroke sample to obtain accurate stroke samples as candidate stroke samples; using the candidate stroke samples as references to generate morphological sample groups; correcting the preliminary basic path to obtain an accurate basic path; selecting morphological samples best matching the accurate basic path in the morphological sample groups as final stroke samples; and mapping style features of the final stroke samples onto the accurate basic path to generate an output image with Chinese ink painting style.
Provided is a substituted graphane material having a three-dimensional structure, including a planar substrate having a plurality of continuous sp3hybridized six-membered carbon rings and organic molecule rings connected to the substrate through a D-A reaction. The substituted graphane material is a novel macromolecule. The macromolecule is a three-dimensional macromolecular structure formed by bonding organic molecules to a plurality of planar sp3 hybridized six-membered carbon rings. Due to the basic structure of the three-dimensional macromolecule, which is greatly different from the conventional linear molecular structure, it has numerous properties different from existing materials and many advantageous characteristics.
Disclosed in the present invention is an interactive Chinese ink painting style stroke generating method, comprising the following steps: acquiring an image comprising patterns to serve as an image object; acquiring a delineation operation on a prestored ink painting drawing sample, the delineation operation at least comprising a stroke sample; acquiring a basic outline sketched by a user on the image object, the basic outline forming a preliminary basic path of strokes to be generated; correcting stroke outlines in the stroke sample to obtain accurate stroke samples to serve as candidate stroke samples; generating a morphological sample group using the candidate stroke samples as references; correcting the preliminary basic path to obtain an accurate basic path; selecting from the morphological sample group a morphological sample which best matches the accurate basic path to serve as a final stroke sample; and mapping the style characteristics of the final stroke sample to the accurate basic path, so as to generate a Chinese ink painting style output image.
33333333 is 0.4-0.6 M. LED devices assembled with the prepared mixed perovskite thin film has excellent performance with current efficiency up to 77.18, the maximum brightness over 50,000 cdm-2, and the maximum external quantum efficiency of 20.31%, achieving significant improvements over the prior art.
A microbial dressing method for super abrasive tools includes a kind of microbe which is capable of consuming the bond in a certain manner is selected to perform the microbial dressing. Specifically, the microbe is inoculated and cultured in the culture medium to a certain concentration, then the dressing area of the abrasive tool is immersed into the culture liquid to remove the bond in the surface by the action of the microbe, and the control of the dressing amount is realized by controlling the microbe concentration and the soaking time. Precise dressing for super abrasive products, particularly for fine grained abrasive tools can be realized using the present method.
B24B 53/00 - Devices or means for dressing or conditioning abrasive surfaces
B24B 53/02 - Devices or means for dressing or conditioning abrasive surfaces of plane surfaces on abrasive tools
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 53/04 - Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
B24D 3/06 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
72.
Ultrafine abrasive biopolymer soft polishing film and manufacturing method thereof
Disclosed is an ultrafine abrasive biopolymer soft polishing film having a base material, the base material including a high polymer base material formed by crosslinking, solidifying and drying a uniform mixture that include from 0.1-10 wt % of an ultrafine abrasive that is chemically coated with a coupling agent to provide a surface-modified ultrafine abrasive; from 5-15 wt % of a chemical additive for controlling dryness; and from 1-10 wt % of a biopolymer sol, wherein the coupling agent improves dispersion and holding of the surface-modified ultrafine abrasive in the high polymer base material, and a method of making the same.
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24B 19/22 - Single purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
B24B 37/22 - Lapping pads for working plane surfaces characterised by a multi-layered structure
B24B 37/24 - Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
B24D 11/00 - Constructional features of flexible abrasive materialsSpecial features in the manufacture of such materials
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
73.
Composite abrasive with hard core and soft shell, manufacturing method and application method
Disclosed is a composite abrasive with hard core and soft shell, comprising hard abrasive core with grain diameter in a range of 0.1˜1 μm and a soft oxide shell with thickness in a range of 5˜100 nm, the grain size of the oxide of the soft oxide shell is in a range of 5˜20 nm, the composite abrasive is obtained from aqueous solution of oxide inorganic salt precursor and the hard abrasive by dispersing, constant temperature reflux hydrolyzing, solid-liquid separating, washing and drying. The component abrasive with hard core and soft shell of the present invention can improve the manufacturing efficiency and the surface quality during the ultraprecise manufacturing of the sapphire substrate.
C04B 35/583 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride
C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
C04B 35/563 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on boron carbide
B24B 7/22 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
74.
RIBOZYME-TYPE GENE EXPRESSION REGULATION ELEMENT AND USE THEREOF
Provided is a ribozyme-type gene expression regulation element with a nucleotide sequence as shown in SEQ ID NO: 1; and at the same time, provided is a ribozyme-mediated gene regulation system constructed by utilizing the regulation element. In particular, the nucleotide sequence of the ribozyme-type gene expression regulation element is inserted into a non-coding region of a target gene in the system, and theophylline is added into a culture medium of a host cell after the target gene is transferred into the host cell, so that the expression level of the target gene is improved, along with an increase in the theophylline concentration.
A manufacturing device of a microscopic surface texture, comprising: a processed specimen (4), a tool head (5), a base system, an ultrasound vibration system, and a pressure sensor (6); relative positions of the processed specimen (4) and the tool head (5) are adjusted via the base system; the tool head (5) vibrates via the ultrasound vibration system and processes the processed specimen (4); a dynamic change of a pressure between the tool head (5) and the processed specimen (4) is detected via the pressure sensor (6). The manufacturing device of the microscopic surface texture utilizes an ultrasound vibration to generate stable amplitude and frequency, has a high processing precision, a high efficiency, and involves a simple and convenient operation method. Also provided is a manufacturing method of the microscopic surface texture.
The present invention relates to the field of combination between biomacromolecule materials and super-precision machining. Disclosed are a superfine abrasive biomacromolecule flexible polishing film and a preparation method therefor. A substrate of the polishing film is made of a degradable biomacromolecule material, the mechanical performance of the polishing film is enhanced by means of selected filling agents, water carrying agents, pore forming agents and other drying control chemical additives, and superfine abrasives can be evenly dispersed and effectively held in the polishing film by using a coupling agent surface chemical modification method. Compared with a conventional chemical and mechanical polishing mode, the problems that free abrasives are seriously wasted and the environment is polluted by a corrosive polishing solution are avoided. Compared with a commercial polishing film product, the biomacromolecule substrate has certain flexibility, accommodate-sinking of abrasive particles can be achieved, scratches and mechanical damages are avoided, and super-precision nondestructive machining can be achieved. The polishing film is characterized in simple preparing process, good polishing effect, high machining efficiency, easy cleaning of a workpiece, environmental friendliness and the like.
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24B 19/22 - Single purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
77.
METHOD FOR MICROWAVE CLADDING OF CUW ALLOY ON CU SUBSTRATE SURFACE
Provided is a method for microwave cladding of a CuW alloy on a Cu substrate surface. A method combining powder metallurgy and microwave heating technology is used to achieve good welding of a CuW alloy coating layer and a Cu substrate. The Cu substrate and the CuW alloy coating layer are fused to one another, and a good bonding effect is achieved. The time required for microwave welding is short, and the obtained CuW alloy coating layer has high hardness and good wear resistance.
A method for manufacturing a metal member having a geometric structure such as a thin wall or a thin groove. A wax mould with a thin wall structure and a thin groove structure is manufactured by alternately injecting and segment carving two wax-based materials having different properties. Gel casting technology is then used to inject a slurry of a filler metal powder into the wax mould, thereby manufacturing a green body. The green body is then dried by a vacuum freeze-drying method. Finally, the green body is sintered by microwave sintering technology. The present method solves the problems that a green body is prone to cracking during a drying process, and prone to cracking and warping during a sintering process.
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
Provided is a process for producing graphene, wherein graphite powder is wet ball-milled in an organic solvent with a surface tension of 30-45 mNm-1, and surfaces of milling balls for in use are coated with soft polymer. This process has the following advantages: 1) by coating the hard milling balls with soft polymer, damage to graphite crystal structure from rigid collisions among the milling balls is effectively decreased, the milling effect is greatly improved and productivity of graphene may reach 30-50 wt%; 2) industrialized production can be easily realized by using ball-milling; 3) graphene crystal structure remains perfect except for a few defects on marginal portions; and 4) uniform graphene product thickness of 1-2 carbon atom layers.
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