上衣

Magnesium dissolving agent and preparation method of magnesium oxide product

The invention provides a preparation method of a magnesium dissolving agent and a magnesium oxide product. Wherein the magnesium dissolving agent comprises hydrogen peroxide and any one or more of chromium chloride, calcium chloride, calcium oxide, ferroferric oxide, ferric trichloride, potassium chloride, sodium chloride, aluminum chloride, zinc oxide, zinc chloride, copper chloride or ethylenediaminetetraacetic acid. The method can solve the problem of high cost of high-purity magnesium oxide preparation in the prior art, and is suitable for the field of magnesium-containing oxide purification.

Geological fracture surface exploration and measurement device

The invention relates to the technical field of geological disaster measurement, in particular to a geological fracture surface exploration and measurement device. According to the technical key points, the device comprises two supporting mechanisms and a sliding rod, and the two ends of the sliding rod are rotationally connected with the tops of the two supporting mechanisms correspondingly; the sliding rod is sleeved with a sliding box body moving in the length direction of the sliding rod, a fixed box body is arranged at the bottom of the sliding box body, a second horizontal sliding groove with an opening in the bottom is formed in the fixed box body, a translation mechanism is arranged in the second horizontal sliding groove, the translation mechanism is sleeved with a horizontal sliding rod, and the horizontal mechanism drives the horizontal sliding rod to horizontally move in the length direction of the horizontal sliding rod; an electric hydraulic push rod is fixedly arranged at ...

车载一体化显控台

Conical beam antenna based on Fabry-Perot resonant cavity

The invention discloses a conical beam antenna based on a Fabry-Perot resonant cavity, which comprises a first dielectric substrate, a second dielectric substrate, a first metal layer, a second metal layer and a single-port feed source, and is characterized in that a first metal printed circuit is printed on one surface, facing the second dielectric substrate, of the first dielectric substrate; a second metal printed circuit is printed on the face, facing the first dielectric substrate, of the second dielectric substrate, an FP cavity is formed among the first metal printed circuit, the second metal printed circuit and the first metal layer, and the second metal layer is arranged on the face, away from the second metal printed circuit, of the second dielectric substrate. A part of metal between the second metal layer and the second dielectric substrate is cut off to form a metal E-shaped cavity, and the single-port feed source is arranged in the center of the bottom of the second dielectric ...

Titanium dioxide for fluorocarbon coating and preparation method

The invention discloses titanium dioxide for a fluorocarbon coating and a preparation method. The titanium dioxide comprises a titanium dioxide base material and a coating layer positioned on the surface of the titanium dioxide base material, the coating layer sequentially comprises an active compact silicon oxide film layer with hydroxyl on the outer layer, a compact aluminum silicate film layer, a compact silicon oxide film layer and a Bayer stone and boehmite composite aluminum oxide film layer from inside to outside. The titanium dioxide provided by the invention has ultrahigh weather resistance and dispersity, and is suitable for fluorocarbon coatings.

Panda source Weissella kk64 and application thereof

The invention provides a panda source Weissella kk64 strain and an application thereof. The panda-derived Weissella kk64 is preserved in the Guangdong Microbiological Culture Collection Center on March 14, 2023, the preservation number is GDMCC (China General Microbiological Culture Collection Center) NO: 63205, and the panda-derived Weissella kk64 is named as Weissella kk64. The strain has good acid-resistant and cholate-resistant characteristics, and can ensure that enough biomass passes through stress of a digestive tract environment; the bacterium has the surface hydrophobic characteristic and the automatic gathering capability; extracellular metabolites obtained after fermentation of the strain have the capacity of removing DPPH free radicals and hydroxyl free radicals; the strain can produce feed enzyme preparations such as cellulase, beta-galactosidase and the like; the strain has a good inhibition effect and co-aggregation capability on pathogenic bacteria such as salmonella typhimurium ...

CONVERSION CIRCUIT FOR DIRECT-CURRENT SWITCH POWER SUPPLY

A conversion circuit for a direct-current switch power supply, comprising: a main circuit, the main circuit comprising a boost circuit and a buck circuit, wherein the boost circuit is connected to an input voltage (Vin), and the buck circuit provides an output voltage (Vout) to the outside; and a control circuit connected to the main circuit, the control circuit comprising a pulse-width modulation controller. The boost circuit comprises a first energy storage element (L1) and a second energy storage element (C1), and the buck circuit comprises the second energy storage element and a third energy storage element (L2). The pulse-width modulation controller controls the second energy storage element to provide the output voltage to the outside through the third energy storage element while controlling the input voltage to charge the first energy storage element; and controls the third energy storage element to discharge so as to provide the output voltage to the outside while controlling the ...

Buried water and fertilizer integrated sprinkling irrigation system

The invention provides a buried water and fertilizer integrated sprinkling irrigation system, and belongs to the field of agricultural sprinkling irrigation. The invention particularly relates to a water and fertilizer integrated sprinkling irrigation system which is pre-buried in soil and performs sprinkling irrigation through combined plug-in spray pipes. Comprising a water supply system, a fertilizer supply system and a mixing tank connected with the water supply system and the fertilizer supply system so as to mix fertilizer and water, the mixing tank is communicated with a pipeline structure pre-buried in soil through a group connecting pipe, the pipeline structure is distributed in a pipe network mode, and a sprinkling irrigation structure is correspondingly arranged in the pipeline structure so as to perform sprinkling irrigation of water and fertilizer. The pipeline structure is formed by connecting the multiple pipe joints through the connecting assemblies, the connecting assemblies ...

Device and method for detecting torsion resistance of bent plate of suspension arm of wheeled crane

The invention discloses a wheel crane suspension arm bending plate torsion resistance detection device, which comprises a supporting rod, at least two groups of positioning supports sleeve the supporting rod, the positioning supports and the supporting rod are arranged in a sliding manner, and the bottom of each positioning support is provided with a positioning groove clamped with a suspension arm bending plate; the emitter assembly is arranged on the supporting rod in a sleeving mode and located between the two sets of positioning supports; and the light target ruler is used for measuring the height between the upper edges of the two sides of the other end of the crane jib bent plate and the laser surface. According to the device, the light emitting surface of the high-precision line laser is taken as a reference, two sides of one end of the bent plate are positioned, and the height deviation of two sides of the other end in a free state is measured by the light target ruler, so that ...

Angle welding process for box beam by using automatic angle welding trolley

The invention relates to a fillet welding process for a box beam by using an automatic fillet welding trolley, which belongs to the technical field of workpiece welding and comprises the following steps: S1, in the manufacturing process of a plate unit structure of the box beam, welding is carried out by using the automatic fillet welding trolley according to the weld leg size AWS01.1-2010; s2, an automatic fillet welding trolley is adopted for welding an outer fillet weld; s3, when the four edges of the box beam are formed, an automatic welding trolley is adopted, the size of a welding leg refers to AWS D1.1-2010, a welding-back method is adopted for welding, and welding is conducted from the middle to the two sides; s4, ensuring that the free edge of a wing plate is greater than 20mm when a side suction type automatic fillet welding trolley is used for an external fillet weld; and S5, when a flat suction type automatic angle welding trolley is used for the inner angle welding seam of ...

Peanut rhizobium strain HM13 and application thereof

The peanut rhizobium strain HM13 is classified and named as rhizobium, the Latin name is Rhizolium sp. The peanut rhizobium strain HM13 is preserved in the China General Microbiological Culture Collection Center on December 27, 2022, the preservation number is CGMCC No.26342, and the address of the preservation unit is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. Belongs to a new species of rhizobium sp. And has the functions of secreting indoleacetic acid (IAA), fixing nitrogen, promoting growth and reducing the content of Cd in peanut plants and seeds. The peanut growth can be promoted, the nitrogen content and biomass of peanut plants are increased, the yield of peanut seeds in cadmium-polluted farmland is increased by 70%, and the cadmium content is reduced by 50%.

Synchronous feeding structure of sewing machine and use method of synchronous feeding structure

The invention relates to the technical field of sewing machines, in particular to a synchronous feeding structure of a sewing machine and a using method of the synchronous feeding structure of the sewing machine. The feeding device comprises a pushing plate used for extruding and pushing the lower surface of the fabric and a pushing mechanism arranged in the workbench and used for driving the pushing plate to move. The pressing device comprises a pressing plate and a driving mechanism, wherein the pressing plate is used for extruding the upper surface of the fabric and matched with the pushing plate to push the fabric, the driving mechanism is arranged on the machine head and used for driving the pressing plate to move, and the pushing plate and the pressing plate are oppositely arranged in the height direction of the workbench. The fabric conveying device has the effect that the fabric conveying convenience can be improved.

Roller type particle crusher capable of uniformly crushing particles

The invention discloses a roller type particle crusher capable of uniformly crushing particles, relates to the technical field of roller type particle crushers, and solves the problems that during crushing of a roller type crusher, feed passing through the teeth is crushed through mutual extrusion only by virtue of crushing teeth outside two or more crushing rollers, and the crushing efficiency is low. And the feed between the crushing teeth on the same crushing roller is not uniformly crushed. According to the roller type particle crusher capable of uniformly crushing particles, a crushing motor is installed in a device shell, a crushing assembly is arranged in the middle of a crushing bin and comprises two crushing shaft sleeves, the two crushing shaft sleeves are symmetrically arranged, and a plurality of crushing outer teeth are distributed on the outer surfaces of the crushing shaft sleeves in a linear array mode. An auxiliary crushing mechanism is arranged in the crushing shaft sleeve ...

Liquid meat quality detection method and equipment

The invention relates to the technical field of food processing, and particularly discloses a liquid meat quality detection method and equipment. The method comprises the following steps: (S1) extending an input pipe of a sampling barrel below the liquid level of liquid meat, and extracting and sampling the liquid meat; (S2) conveying the sample in the sampling barrel to a glass slide, and placing the glass slide at a detection position of detection equipment; (S3) a simulated light emitting device in the detection equipment respectively emits fluorescent lamp-like light and simulated infrared spectrum light to irradiate the sample on the glass slide in the step (S2); and (S31) the light irradiated on the sample is reflected and refracted in a penetrating manner, a spectrum sensor and an image collector in the detection equipment capture and record the reflected light and the refracted light at the same time, and spectrum data and image data are transmitted to a microprocessor in a control ...

Commodity size recommendation method, device and equipment

The embodiment of the invention provides a commodity size recommendation method, device and equipment, and the method comprises the steps: responding to a touch operation of a target user by electronic equipment, and determining a target user identifier and a target commodity identifier corresponding to the touch operation; the target commodity identifier corresponds to a plurality of target commodity sizes; determining a target crowd type corresponding to the target user identifier, wherein the target crowd type is determined based on target consumption data corresponding to the target user identifier; and determining the target size of the target user based on the size selection probability of the target crowd type for the target commodity size. Therefore, the electronic equipment performs size recommendation based on the consumption behavior of the user and the size preference of the similar crowd, size recommendation can be performed without the aid of size information manually filled ...

Clothing edge covering belt and using method thereof

The invention relates to the technical field of clothing edge covering, in particular to a clothing edge covering belt which comprises a belt body and fixed-length teeth, the thickness of the belt body is 0.1-1 mm, a plurality of fixed-length teeth are evenly distributed along one side edge of the belt body at intervals, and the length of the fixed-length teeth is equal to the length of an edge needing to be covered; one end of each fixed-length tooth is fixed to the belt body, the other end of each fixed-length tooth is perpendicular to the edge, connected with the corresponding fixed-length tooth, of the belt body and extends in the direction away from the belt body, and the fixed-length teeth are parallel to the belt body. The invention further discloses a use method of the clothing edge covering belt. The edge covering device has the effect of accurately limiting the edge covering width in the edge covering process.

Multi-section traffic accident and congestion detection method and system based on deep learning

The invention relates to the technical field of traffic control, and provides a multi-section traffic accident and congestion detection method and system based on deep learning, and the detection method comprises the steps: sequentially accessing cameras through employing a polling mechanism and congestion pre-judgment, and obtaining vehicle images collected by the cameras; according to the obtained vehicle image, a trained traffic event three-classification model is adopted to carry out vehicle detection and identification, and a traffic jam condition is obtained; acquiring a vehicle image of a traffic congestion road section, performing identification by adopting a congestion accident direction dichotomy model to obtain a lane middle line or an isolation belt and a vehicle head direction, and determining a congestion accident direction; the traffic event three-classification model sequentially recognizes the vehicles in the image, the number of the vehicles in the image and the moving ...

Rhizopus delbrueckii SICAU-Z1 and application thereof

The invention provides a strain of rhizopus delbrueckii SICAU-Z1 and application thereof, the rhizopus delbrueckii SICAU-Z1 is rhizopus delbrueckii SICAU-Z1, and the preservation number of the rhizopus delbrueckii SICAU-Z1 is CCTCC (China Center For Type Culture Collection) NO: M2022700. The bacterial colony of the strain is white villus-shaped and cotton-wool-shaped. Hyphae at the base part are white and then become taupe, and the reverse side is colorless. The mycelia grow fast, stolons are generated on the mycelia, rhizoids are formed among the sections of the stolons, sporangium stems grow upwards at the growth positions of the rhizoids, and the top ends of the stems expand to form sporangiums. The sporospores of the sporospores are spherical. The SICAU-Z1 is separated from flue-cured tobacco in the mature period in Liangshan province and is high in IAA yield, and experiments prove that the strain can obviously inhibit growth of plant pathogenic bacteria and fungi and degrade crop straw ...

Document processing method and device, electronic equipment and storage medium

The invention relates to a document processing method and device, electronic equipment and a storage medium, and relates to the technical field of computers.The method comprises the steps that a target document is determined from created documents according to interaction data between a first user account and the created documents; the first user account is an account used by a user viewing the created document. Taking an account used by a user creating the target document as a second user account, and sending a release prompt to the second user account; the publishing prompt is used for prompting the second user account to publish the target document to the content sharing area. Issuing the target document to a content sharing area under the condition that an issuing confirmation instruction is received; the issuing confirmation instruction is submitted by the second user account in response to the issuing prompt. Therefore, the decision path of the second user account can be effectively ...

Sparse AMG optimization method for CPU + DCU heterogeneous hybrid architecture

The invention discloses a sparse AMG optimization method for a CPU + DCU heterogeneous hybrid architecture, and belongs to the technical field of high-performance calculation and algorithms. According to the sparse AMG optimization method oriented to the CPU + DCU heterogeneous hybrid architecture, after a coarse grid hierarchical structure is formed, sparse optimization is carried out on the hierarchical matrix by removing weak connections or unimportant elements (non-zero elements) in the matrix in a parallel mode, and the parallel communication cost in the subsequent setting stage can be reduced. In addition, parallel optimization is carried out on a large number of three matrix multiplication operations involved in the coarse grid matrix generation process aiming at a supercomputing CPU + DCU heterogeneous hybrid architecture, and the preprocessing efficiency of the AMG method is further improved.

Crane rotary table machining clamp

The invention discloses a machining clamp for a crane rotary table. Comprising a base, a rear hinge point positioning and centering mechanism arranged on the base, a rear hinge point front-back moving and positioning mechanism, a rear hinge point channel steel rotating and pressing mechanism, a backer left-right centering transmission and positioning mechanism, a bottom plate auxiliary supporting mechanism, a vertical plate channel steel positioning and clamping mechanism, a front hinge point tensioning mechanism and a PLC control system. The six-degree-of-freedom full-automatic quick positioning and clamping device realizes six-degree-of-freedom full-automatic quick positioning and clamping of the crane turntable, improves the positioning precision and efficiency, greatly reduces the labor intensity of operators, adopts the PLC control system to control the positioning and clamping of the crane turntable, is adjustable in clamping hydraulic pressure, and is suitable for large-scale production ...

High formwork construction safety monitoring and early warning method and system

The invention provides a high-formwork-erecting construction safety monitoring and early warning method and system, and relates to the technical field of high-formwork-erecting monitoring. Historical high-formwork-erecting construction records are collected, construction accident data are extracted, target historical accidents are extracted and analyzed, a high-formwork-erecting construction accident tree is obtained, a preset high-formwork-erecting construction project is obtained, and multi-dimensional feature analysis is performed; performing traversal analysis in the high-formwork construction accident tree to obtain a preset traversal result and a first minimum cut set, and judging whether the preset traversal result conforms to the first minimum cut set or not, if yes, matching a first early warning scheme, and performing safety early warning on a preset high-formwork construction project. The technical problem that in the prior art, accident reasons and accident characteristics cannot ...

Liquid meat processing device

The invention relates to the technical field of food processing, and particularly discloses a liquid meat processing device which comprises cooking equipment, dicing equipment is arranged at the top end of the cooking equipment, and oil-water separation equipment is arranged on one side of the cooking equipment; a homogenizer and a beater are respectively arranged on two sides of the oil-water separation equipment, and degreasing equipment for degreasing bones is arranged on one side of the oil-water separation equipment; stirring equipment and a spray dryer are arranged on the two sides of the homogenizer respectively, and the stirring equipment is located on the side close to the oil-water separation equipment; a thickener is arranged on one side of the beater; a water pump is arranged between the degreasing equipment and the oil-water separation equipment, a water inlet and a water outlet of the water pump are respectively communicated with the degreasing equipment and the oil-water ...

Parageobacillus toebii PMBT002 and application thereof

The invention relates to a Parageobacillus toebii PMBT002 and application thereof. The preservation number of the Parageobacillus toebii PMBT002 is GDMCC. No: 63295, and the preservation number of the Parageobacillus toebii PMBT002 is CGMCC. The preservation unit is Institute of Microbiology (Guangdong Microbiological Culture Collection Center) of Academy of Sciences, Guangdong Province, the address of the preservation unit is building 5, building 59, No. 100 Courtyard, Xianlie Middle Road, Guangzhou, and the preservation date is March 27, 2022. The strain of Parageobacillus toebii PMBT002 disclosed by the invention is a thermophilic bacterium which is separated and screened by taking panda excrement as a separation source, has double enzyme activities and is used for aerobic composting fermentation. According to the present invention, with the application of the Parageobacillus toebii PMBT002 bacterial preparation in the aerobic composting, the highest composting temperature can achieve ...

Foundation pit and side slope early warning method and system based on real-time monitoring

The invention discloses a foundation pit and side slope early warning method and system based on real-time monitoring, and relates to the field of data processing, and the method comprises the steps: obtaining a monitoring site information set; based on the monitoring site information set and a preset high-formwork monitoring index set, obtaining a monitoring stationing planning scheme; arranging a plurality of monitoring devices on the high formwork monitoring site based on the monitoring point arrangement planning scheme; obtaining a real-time monitoring data set; inputting the real-time monitoring data set into the foundation pit-side slope safety evaluation model to obtain a foundation pit-side slope safety evaluation result; and if the foundation pit-side slope safety assessment result does not meet the foundation pit-side slope safety constraint condition, a foundation pit-side slope safety early warning signal is obtained, and the foundation pit-side slope safety early warning signal ...

Salt-resistant anti-freezing high-durability concrete as well as preparation method and application thereof

The invention belongs to the technical field of improvement of durability of concrete, and discloses salt-resistant anti-freezing high-durability concrete as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying basalt flakes by using vinyl versatate/vinyl acetate copolymer emulsion and polyvinyl alcohol emulsion to prepare modified basalt flakes, and preparing the salt-resistant and freeze-thaw-resistant concrete by using the prepared modified basalt flakes as a main component. The prepared modified basalt scales can provide a layered labyrinth structure for concrete, meanwhile, the vinyl versatate/vinyl acetate copolymer emulsion and the polyvinyl alcohol emulsion are used for conducting surface modification on the basalt scales, migration of harmful substances in the concrete is delayed, the water resistance and durability of the concrete are improved, and the service life of the concrete is prolonged. The corrosion of the ...

Leveling device for wings of unmanned aerial vehicle

The invention discloses an unmanned aerial vehicle wing leveling device which comprises a leveling platform base used for containing an unmanned aerial vehicle, and positioning sliding grooves which are evenly distributed in the axial center and the circumference are formed in a platform of the leveling platform base; the two sets of vehicle arm fixing clamps are symmetrically arranged with the center of the leveling platform base as the center, are further perpendicular to the positioning sliding ways located on the diameter line of the leveling platform base and are used for adjusting and fixing vehicle arms of the unmanned aerial vehicle, so that the pointing direction of the vehicle arms of the unmanned aerial vehicle and the positioning sliding ways are located on the same vertical face; the wing detecting and leveling mechanism is detachably mounted and positioned in the positioning sliding groove and used for detecting the parallel state condition of the wings of the unmanned aerial ...