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47results about How to "Avoid conversion" patented technology

Automatic calibration method and device based on fine inspection camera edge finding and storage medium

The invention discloses an automatic calibration method and device based on fine inspection camera edge finding and a storage medium, which are used for improving the calibration efficiency and avoiding artificial errors when a fine inspection camera aligns with a mark point. The method comprises the following steps: obtaining a fixed offset through advanced teaching; according to the fixed offset, the picture center of the fine detection camera falls into a calibration plate through a motion control assembly, and a calibration point is arranged in the calibration plate; the motion control assembly controls the fine detection camera to carry out edge finding motion so as to collect a characteristic pattern of the calibration plate, the linear edge and the angular point of the inner frame of the calibration plate are identified according to the characteristic pattern, and the fine detection camera is guided to carry out edge finding motion and angular point alignment; determining a first mechanical coordinate at the moment; according to the physical parameters of the calibration plate and the first mechanical coordinate, determining a second mechanical coordinate when the picture center of the fine detection camera is aligned with the center of a calibration point on the calibration plate; and calculating an affine transformation relation according to a pre-collected third mechanical coordinate and a pre-collected second mechanical coordinate, and completing calibration.
Owner:SHENZHEN SEICHITECH TECHN CO LTD

Double-head tube end forming machine

The present application discloses a double-head tube end forming machine, comprising a machine body with a workbench, on which a first tube end forming mechanism and a second tube end forming mechanism are arranged relatively to each other, the first tube end forming mechanism and the second tube end forming mechanism both comprise a jig for supporting and pressing the tube fittings and a tube end forming assembly for processing the tube fittings on the jig, one end of the tube fitting is arranged on the jig of the first tube end forming mechanism, and the other end is arranged on the jig of the second tube end forming mechanism, a feeding mechanism is arranged between the first tube end forming mechanism and the second tube end forming mechanism, the first tube end forming mechanism and the second tube end forming mechanism can be respectively close to or far away from the feeding mechanism, the present application can realize double-station forming processing of both ends of the tube fittings, thereby greatly improving work efficiency.
Owner:SUZHOU RMK MATERIAL TECH CO LTD

A multi-protocol data transmission method, system and conversion system

ActiveCN116320058Bavoid conversionOvercoming the need for interrupt processing to achieve conversion in the existing technologyTransmissionData packProcessing element
The application provides a multi-protocol data transmission method, system and conversion system, wherein the method comprises the following steps: an MCU receives data of multiple protocols from an Ethernet, including MVB protocol data and non-MVB protocol data; data corresponding to the protocols is extracted from the multiple types of data, and is packaged into data packets respectively and sent to an FPGA; the FPGA receives the data packets from the MCU, extracts data corresponding to the protocols from the data packets, and processes the data by using the corresponding protocols respectively; MVB data processed by using the MVB protocol is sent to an MVB communication processor; the MVB communication processor receives the MVB data sent by the FPGA, and sends the MVB data to an external MVB device. The application adopts three processing units to respectively execute respective steps and cooperatively process, so that the purpose of realizing conversion of data of different protocols without interrupt processing is achieved.
Owner:CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD +1

A porous composite filler for efficiently removing total nitrogen from domestic sewage and its application

The present invention relates to the technical field of sewage treatment materials, and specifically to a porous composite filler and application thereof for efficiently removing total nitrogen from domestic sewage; the porous composite filler is a porous zeolite / nanocarbon ball composite filler, and the porous zeolite / nanocarbon ball composite filler comprises a porous zeolite and a single-porous hollow nanocarbon ball loaded on the pore surface of the porous zeolite; the mass ratio of the porous zeolite and the single-porous hollow nanocarbon ball is (95.0~98.0):(2.0~5.0). The single-porous hollow nanocarbon ball of the present invention has a unique single-porous hollow structure, which is combined with the columnar pore adsorption and diffusion capacity of the porous zeolite to achieve efficient removal of total nitrogen. The composite filler has excellent adsorption performance and structural stability, is suitable for the removal of total nitrogen in municipal sewage treatment, industrial wastewater treatment and artificial wetland systems, achieves the performance of efficient removal of total nitrogen from domestic sewage, solves the problem of low adsorption efficiency, and has a wide range of application value.
Owner:HUNAN YI KANG ENVIRONMENTAL PROTECTION TECHCO

Display device and personalized recommendation reason generation method

The invention relates to a display device and a personalized recommendation reason generation method. The display apparatus includes: a display configured to display a user interface; an audio output device configured to output sound; the controller is configured to display a search result page in response to a multimedia content search operation triggered by a target user; in the process that the target user carries out multimedia content search for the search result page, target multimedia content is selected; a personalized recommendation reason of the target multimedia content is obtained, and the personalized recommendation reason is generated based on the user portrait data of the target user and the media asset data of the target multimedia content; and controlling at least one of the display and the audio output device, and displaying the personalized recommendation reason. By adopting the display equipment, the conversion rate of a multimedia content search function can be improved.
Owner:HISENSE VISUAL TECH CO LTD

Display panel, preparation method thereof and display device

The invention relates to a display panel, a preparation method thereof and a display device. The display panel further comprises at least one groove. In the direction parallel to the plane where the base plate is located, the groove is provided with a second cross section perpendicular to the plane where the base plate is located, the second cross section comprises two opposite side edges, and the side edges at least comprise a first sub-edge, a second sub-edge and a third sub-edge; the first sub-edge is in contact with the groove bottom of the groove; the second sub-edge is located between the first sub-edge and the third sub-edge in the direction of pointing to the first electrode layer along the substrate; the third sub-edge comprises a vertex far away from the substrate, and the vertical distance from the vertex to the substrate is equal to the vertical distance from the surface, far away from the substrate, of the pixel definition layer to the substrate; wherein in the direction away from the substrate, the third sub-edge comprises first to Nth inclined edges which are connected in sequence, the inclined angles of the inclined edges are in a decreasing trend, and the inclined angles of the inclined edges are included angles between the inclined edges and the plane where the substrate is located; therefore, the service life of the OLED light-emitting unit is prolonged.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD

A method for preparing a gradient dual-phase polymer interfacial layer modified metal electrode and application thereof

The application discloses a preparation method of a gradient two-phase polymer interface layer modified metal electrode. The gradient two-phase polymer interface layer modified metal electrode is prepared by coating a metal negative electrode with a mixed solution of PBI and PVA and then vacuum drying the metal negative electrode coated with the PBI and PVA mixture. The PBI and PVA mixture on the metal negative electrode is decomposed by spinodal to form a continuous gradient two-phase structure with loose upper and dense lower, which can realize multi-step coupling kinetics balance of mass transfer, reduction and nucleation in the zinc deposition process, and fundamentally inhibit the growth of dendrites. The zinc anode with the two-phase gradient polymer interface can be stably operated at 5 mA cm ‑2 for 7500 hours, reach about 92% of the zinc utilization rate in 10 mA cm ‑2 for 600 hours, and be stably operated at 40 mA cm ‑2 for 1500 hours.
Owner:JIANGNAN UNIV

Prussian blue-based positive electrode material and preparation method and application thereof

ActiveCN121601653Bavoid conversionImprove cycle stability
The application relates to the technical field of battery materials, and discloses a Prussian blue type positive electrode material and a preparation method and application thereof. The inventors have found that specific water content and distribution ensure the stability of the structure of the material in the process of preparing an electric core, the electric core does not produce gas and does not drop material during the cycle. Therefore, the application provides a Prussian blue type positive electrode material, the mass content ratio of coordination water X a , interstitial water X b and adsorbed water X c is X b :X a = 0.2-5:1, X c :X a = 0.1-5:1, the stability of the water distribution of the Prussian blue type positive electrode material in the process of drying the pole piece is avoided, the stability of the material structure is maintained, the advantages of the interstitial water in improving the cycle are exerted, the volume effect of the phase change of the material with extremely low water content during the cycle is avoided, the positive electrode material is prevented from falling off, and the battery prepared by using the Prussian blue type positive electrode material as the positive electrode material has excellent cycle stability.
Owner:湖州超钠新能源科技有限公司

Method for preparing monocyclic and polycyclic aromatic hydrocarbons through catalytic hydrogenation depolymerization of lignin

The invention relates to a method for preparing monocyclic and polycyclic aromatic hydrocarbons through catalytic hydrogenation depolymerization of lignin. The method comprises the following steps: adding lignin and a catalyst containing Mo, Pd, Ru, Pt, CuZnAl and Raney Ni as active components into a high-pressure reaction kettle, then adding high-pressure hydrogen, heating to a given temperature under solvent-free and stirring conditions, carrying out a catalytic hydrogenation depolymerization reaction on the lignin, and after the reaction is finished, separating products in the reaction kettle to obtain the monocyclic aromatic hydrocarbon and the polycyclic aromatic hydrocarbon. According to the method, renewable lignin is used as a raw material, so that the method has sustainability; the selected catalyst is good in catalytic effect, the lignin conversion rate reaches 100%, the oil yield reaches 62 wt%, and the total yield of monocyclic aromatic hydrocarbon and polycyclic aromatic hydrocarbon in oil can reach 57 wt%. Compared with other lignin conversion methods, the method not only can produce monocyclic aromatic hydrocarbons, but also can produce a large amount of polycyclic aromatic hydrocarbons.
Owner:BEIJING UNIV OF CHEM TECH

Multifunctional track device for outer packing equipment

The utility model discloses a multifunctional track device for external packaging equipment, which comprises a rack connected with a conveying belt, guardrails are arranged on two sides of the rack, a channel adjusting device and a steering device are arranged on the rack, and both the channel adjusting device and the steering device are positioned at the front end of the conveying belt; the steering device is used for rotating the packaging box by 90 degrees; an infrared counter is arranged on the guardrail; an overturning device is arranged at the rear end of the conveying belt and used for overturning the packages. According to the multifunctional track device for the outer packing equipment, the running directions of outer packing boxes of different designs in the track are effectively adjusted, conversion among different packing boxes is achieved, meanwhile, small boxes of different numbers can be tightly arranged and combined into a middle packing unit, wrapping operation on the middle packing unit is facilitated, and the production efficiency is improved. And the working time of personnel is saved, the production efficiency is improved, the occupied area of the track is reduced, and the cost is saved.
Owner:HUNAN ZHONGHE PHARMA

Machine tool maintenance priority ranking method based on z number-CRITIC-grey relational degree

The invention provides a machine tool maintenance priority ranking method based on z-number-CRITIC-grey relational degree, which comprises the following steps: firstly, proposing distance measurement of the z-number, improving a CRITIC weight model based on total utility (TU value) of the z-number to enable the CRITIC weight model to be fused with a z-number decision language, and secondly, improving a grey relational degree model based on the distance measurement of the z-number to enable the grey relational degree model to be fused with the z-number decision language. According to the method, the reliability of decision information is considered, and finally, the maintenance units are subjected to priority ranking through a z-number-CRITIC-grey relational degree decision model, and the problems of fuzziness, reliability and the like of expert decision languages are fully considered.
Owner:CHINA THREE GORGES UNIV

Treatment method for toluene purification and application thereof

ActiveCN119613216AReduced risk of emulsificationLow content of related substancesHydrocarbonsMetal/metal-oxides/metal-hydroxide catalystsBenzoic acidAlkaline water
The invention discloses a toluene purification treatment method and application thereof, and the toluene purification treatment method comprises the following steps: carrying out catalytic conversion on toluene in an acidic environment at 60 DEG C or below by adopting a porous material metal catalyst, mixing the converted liquid with alkali liquor, and separating to obtain purified toluene. According to the treatment method, non-aromatic hydrocarbon and C8 / C9 aromatic hydrocarbon substances in toluene are converted into micromolecular substances or acidic substances, the micromolecular substances or acidic substances are removed in an alkaline water washing mode, when toluene is used for nitration reaction, the content of fatty acid and benzoic acid substances in the nitration reaction process is reduced, and the yield of the nitration reaction is improved. Non-aromatic hydrocarbon and C8 / C9 aromatic hydrocarbon substances are prevented from being converted into carboxylic acid emulsified impurities in the nitration reaction process, and the emulsification risk of the nitration reaction is reduced.
Owner:WANHUA CHEMICAL(FUJIAN) ISOCYANATE CO LTD

Code conversion method, device, equipment and storage medium

ActiveCN113626038Bimplement the buildavoid conversionSource to source
The present application discloses a code conversion method, device, equipment and storage medium, the method comprising: transcoding a kernel function of CUDA Fortran language in a code to be converted, obtaining a header file and a source file including a kernel function of CUDA C language, the main code in the code to be converted comprises a first code and a second code, the second code comprises a calling code, a wrapper function is constructed according to the source file, the header file and the kernel function of CUDA C language, the wrapper function is used to call the kernel function of CUDA C language, the second code is modified, a third code compatible with HIP is obtained, the third code comprises a code for calling the wrapper function, and finally, the converted code is obtained according to the modified main code, source file, header file and wrapper function. Thus, code conversion is realized and the efficiency of code conversion is improved.
Owner:DAWNING INFORMATION IND (BEIJING) CO LTD

A method for purifying toluene and its application

ActiveCN119613216BReduced risk of emulsificationLow content of related substancesHydrocarbonsMetal/metal-oxides/metal-hydroxide catalystsBenzoic acidPtru catalyst
This invention discloses a method for purifying toluene and its application. The method includes: catalytic conversion of toluene using a porous metal catalyst in an acidic environment below 60°C; and then mixing the converted liquid with an alkaline solution for separation to obtain purified toluene. This method converts non-aromatic hydrocarbons and C8 / C9 aromatic hydrocarbons in toluene into smaller molecules or acidic substances, which are then removed by alkaline washing. When toluene is used in nitration reactions, it reduces the content of fatty acids and benzoic acids during the nitration process, preventing non-aromatic hydrocarbons and C8 / C9 aromatic hydrocarbons from converting into carboxylic acid emulsion impurities during nitration, thus reducing the risk of emulsification in the nitration reaction.
Owner:WANHUA CHEMICAL(FUJIAN) ISOCYANATE CO LTD

Gas mist cooling device and method for intensive hot rolled coil continuous heat treatment

The present invention discloses an aerosol cooling device and method for intensive hot-rolled coil continuous heat treatment, comprising a plurality of aerosol spraying beams, and the aerosol spraying beams are distributed on the upper and lower surface sides of the hot-rolled coil steel plate; each of the aerosol spraying beams is provided with a plurality of rows of aerosol spraying pipes; each row of the aerosol spraying pipes is provided with a plurality of aerosol nozzles on one side facing the hot-rolled coil steel plate, and a compressed air pipe and a water pipe on the other side. The present invention allows hot-rolled strip steel of different specifications to be quenched at different cooling rates, so that it meets the performance requirements while reducing the thermal stress and structural stress of the strip steel, reducing the surface temperature reversion phenomenon of the strip steel, avoiding the occurrence of self-tempering, and obtaining hot-rolled ultra-high strength steel with excellent performance uniformity, good surface quality, and no obvious wave shape.
Owner:BAOSHAN IRON & STEEL CO LTD

Turnover tool structure for steel pipe between pipe frame and roller

ActiveCN222539779Uavoid conversionhigh speedConveyor partsClassical mechanicsPipe
The utility model relates to a turning tool structure for a steel pipe between a pipe frame and rollers. At least one turning tool structure is arranged at each of the two ends of the steel pipe in the length direction. The roller is arranged on one side of the pipe frame and is arranged on a roller bracket, and the upper end of the roller is lower than the pipe frame; the device is characterized in that a turning plate is arranged above the roller support, a turning shaft of the turning plate is close to the pipe frame, and the lower portion of one end, away from the pipe frame, of the turning plate is connected with an air cylinder through a connecting shaft. The steel pipe station transfer device is used for achieving station transfer of steel pipes between the pipe frame and the idler wheels, and is sensitive in action, high in speed and high in efficiency.
Owner:SHANGHAI HILONG ANTI CORROSION TECH ENG

Method and system for detecting bioflavonoids in plants

The invention discloses a method and a system for detecting bioflavonoids in plants, and relates to the technical field of plant extraction, a plant sample is ground, dissolved and extracted, a sample solution required by detection is obtained, other pigment substances in the sample solution are removed by adopting an acid-base treatment method, and the bioflavonoids in the plant are obtained. The flavonoid substances in the sample solution are purified and enriched through a column chromatography technology; and adjusting the pH value of the sample solution to a pH range capable of maintaining the stability of the flavonoid substances according to the stability requirement of the flavonoid substances. According to the method and system for detecting the bioflavonoids in the plants, through pretreatment, purification and enrichment and pH adjustment, the detection precision and reliability are improved, the purity of a sample solution is ensured, the concentration of flavonoid substances is further improved through a column chromatography technology, the influence of interfering substances is reduced, the sample solution is maintained within the stable pH range of the flavonoid substances, and the detection accuracy is improved. Degradation or conversion is avoided, and the detection accuracy is further improved.
Owner:KH HEALTH IND CO LTD

A method for controlling edge defects on the surface of 316L stainless steel

ActiveCN118932243Bcrack controlControl harmful trace elements or reduce cracksProcess efficiency improvement
A method for controlling edge defects on the surface of 316L stainless steel comprises the following steps: 1) smelting, wherein the mass percentage of the components of 316L stainless steel is: C≤0.03%, Si 0.4~0.7%, Mn 1.1~1.4%, P≤0.045%, S≤0.003%, Cr 16~17.5%, Ni 10~11%, Mo 2.0~2.2%, Cu≤0.3%, N≤0.045%, the balance includes Fe and unavoidable impurities; the residual ferrite dg value is 4~9%; 2) Casting, continuous casting process, the water volume of the second cooling water is 18~30L / S, the temperature difference between the inlet and outlet of the continuous casting is 4~11℃, and the actual residual ferrite content of the billet is 6~10.5%; 3) Rolling, the billet heating temperature is 1230~1270℃, and the heating time is 180~260min; the total reduction rate of hot rolling and rough rolling is ≥84%, and the relative reduction rate of each pass is 28~32%. The present invention solves the scale fold defects on both sides of the hot-rolled and cold-rolled plate surface of 316L steel.
Owner:福建青拓特钢技术研究有限公司

Preparation method of pyrazosulfuron

PendingCN119490456AAvoid secondary powder recycling and other operationshigh purityOrganic chemistryBenzoyl chlorideEsterification reaction
The invention relates to the field of herbicide preparation, and discloses a preparation method of pyrazosulfuron, and the preparation method comprises the following steps: S1, in the presence of an alkaline substance 1 and a solvent, mixing 1, 3-dimethyl-5-hydroxypyrazole and 2-methylsulfonyl-4-trifluoromethyl benzoyl chloride, and carrying out an esterification reaction; s2, dehydrating the reaction product obtained in the step S1; s3, in the presence of an alkaline substance 2 and a catalyst, carrying out rearrangement reaction on the dewatered product obtained in S2; and S4, desolventizing and purifying the reaction product obtained in S3 to obtain the pyrazosulfuron. The one-pot method is adopted to prepare the pyrazosulfuron, so that the condition that an ester intermediate needs to be obtained from an esterification product in a post-treatment mode of thermal stratification or filtration is avoided, operations such as secondary powder recovery of the ester intermediate are avoided, the process is simplified, post-treatment equipment is reduced, and the yield is increased.
Owner:SHANDONG ACHIEVE TESTING TECHNOLOGY CO LTD

A sodium-ion battery double-layer coated composite sodium supplement agent, its preparation method and application

This invention discloses a sodium-ion battery double-layer coated composite sodium replenisher, its preparation method, and its application, relating to the field of new energy battery technology. The sodium replenisher consists of a core composite matrix and a double-layer outer shell. The core composite matrix is ​​αA∙(1-α)D; the double-layer outer shell surrounds the core composite matrix and includes a first coating layer E and a second coating layer G from the inside out. Wherein, A is Na… a Ni x M 1‑x O y D is Na b Π z This invention also discloses a method for preparing the sodium replenishing agent and its application in sodium-ion batteries. This sodium replenishing agent can compensate for the irreversible loss of active sodium in sodium-ion batteries, helping to improve the battery's energy density, increase coulombic efficiency and cycle life, and facilitate the large-scale promotion and application of sodium-ion batteries in energy storage fields requiring more than 10,000 cycles.
Owner:CHENG DU TAN HE LI KE JI YOU XIAN GONG SI

Power module fixing tool

ActiveCN224084028Uavoid conversionavoid human contactStructural engineeringMechanical engineering
The utility model provides a power module fixing tool, which relates to the power module packaging technology and comprises a glue pouring jig, a plurality of placing cavities are arranged on the upper surface of the glue pouring jig, glue pouring ports are arranged at the bottoms of the placing cavities in a penetrating manner, and a plurality of pin holes are vertically arranged on the glue pouring jig in a penetrating manner; a plurality of sets of sliding holes are formed in the auxiliary jig in a penetrating mode, the set number of the sliding holes is matched with the number of the containing cavities, sliding rods are movably arranged in the sliding holes in a penetrating mode, positioning pins matched with the pin holes in number and position are vertically arranged on the lower surface of the auxiliary jig, and the positioning pins are used for being matched with the pin holes respectively. And each group of sliding holes are positioned right above the placing cavities in a one-to-one correspondence manner. And the device can adapt to each operation process and has relatively high practicability.
Owner:SICHUAN MOUNTEK ELECTRONIC TECH CO LTD

Method for synchronizing nodes of cellular network

A method for synchronizing nodes of a cellular network in which a base station transceiver (BTS) as a first node of the cellular network wirelessly transmits clock information according to a first communication protocol to a terminal device connected to the cellular network as a second node of the cellular network; and a computer program product.
Owner:DEUTSCHE TELEKOM AG

Surgical puncture device

ActiveCN119302688Bavoid conversionavoid damageSurgical needlesMedical devices
The invention relates to the field of surgical medical technology, and discloses a surgical puncture device, comprising an injection mechanism, an infection prevention mechanism and a storage mechanism. The injection mechanism can prevent the injection direction of the needle from being changed, thereby avoiding damage to surrounding tissues, reducing the occurrence of infection and other complications, and improving the anesthesia effect. The infection prevention mechanism can effectively isolate the skin wound from bacteria, and detect the bleeding of the wound in real time. When the wound is infected and pus or other liquids flow out, it can be detected and a prompt can be given to remind the patient to prevent further deterioration of the disease. The storage mechanism can allow the patient with a retention tube on the back to control the wound in real time, so that effective treatment can be made in time when there is a problem with the wound. At the same time, when resting, it can avoid liquid reflux due to the small height difference between the storage bag and the chest cavity, reduce the infection probability, and can control the negative pressure of the storage bag and detect the storage situation in real time.
Owner:THE 900TH HOSPITAL OF THE CHINESE PEOPLES LIBERATION ARMY JOINT LOGISTICS SUPPORT FORCE

High-efficiency heat dissipation electric energy metering box

This application relates to the technical field of electricity metering boxes and discloses an efficient heat dissipation electricity metering box, which includes a box body with a mounting base plate inside the box body. A trigger plate is slidably connected to the mounting base plate, and the trigger plate is located between the electrical components and the mounting base plate. The trigger plate includes a heat-conducting part and an insulating part. The heat-conducting part is located at the end of the insulating part near the ground. The mounting base plate is provided with a limiting structure. This application enables the electricity metering box to efficiently conduct the heat of the electrical components to the mounting base plate for heat dissipation during normal operation using the heat-conducting part. When the system encounters abnormally high temperatures, it can switch to the insulating part to prevent the abnormal heat on the mounting base plate from being transferred back to the electrical components over a large area. This prevents problems such as electrolytic capacitor life decay, LCD screen malfunction, metering inaccuracy, or even permanent damage caused by the superposition of ambient temperatures, curbs the expansion of the accident scope, and further improves the operational safety and reliability of the electricity metering box.
Owner:江西颂邦电力科技有限公司

New particle generation event remote sensing identification method, device and equipment

The invention provides a new particle generation event remote sensing identification method, device and equipment, and the method comprises the steps: carrying out the foundation remote sensing observation based on a spectrophotometer and a solar sky radiometer, and obtaining remote sensing observation data; determining a regional nucleation indicator based on the ultraviolet irradiance, the gaseous precursor concentration, and the aerosol optical thickness; determining a first new particle generation day number of which the regional nucleation index is greater than a preset observation initial threshold value; obtaining a second new particle generation day number obtained by online measurement and a third new particle generation day number for reference; iteratively updating the observation initial threshold value to obtain an observation target threshold value; obtaining a regional nucleation index of a target date, and taking the target date as a new particle generation date when the regional nucleation index of the target date is greater than an observation target threshold and the duration is greater than a preset duration threshold; according to the invention, the occurrence of the new particle generation event can be effectively identified.
Owner:AEROSPACE INFORMATION RES INST CAS

A clamp head assembly and a traction clamp

ActiveCN111643156Bavoid conversionGuaranteed clamping forceStentsSurgical forcepsForcepsApparatus instruments
The present disclosure relates to the field of medical devices, and more specifically, to a forceps head assembly and a traction forceps. A forceps head assembly, the forceps head assembly includes a cable, an outer tube, a locking sleeve, and a movable forceps. The cable can movably shuttle inside the outer tube; the locking sleeve can movably sleeve outside the outer tube; the movable forceps is located at the distal end of the outer tube, and the distal end of the cable is connected to the movable forceps. The cable is configured to move relative to the outer tube under the action of an external force to drive the movable forceps to open or close; the locking sleeve is configured to move relative to the outer tube toward the distal end close to the outer tube under the action of an external force to sleeve the movable forceps and keep the movable forceps in a closed state. The forceps head assembly can clamp and pull diseased tissue, assisting doctors in expanding the surgical field of view, thereby reducing the operation time.
Owner:SHENGJING HOSPITAL OF CHINA MEDICAL UNIVERSITY +1

Method for preparing pure alpha-phase MoC particles through one-step rapid carbonization and application

The invention discloses a method for preparing pure alpha-phase MoC particles through one-step rapid carbonization and application of the pure alpha-phase MoC particles. The method comprises the following steps: delivering a quantitative gas-phase carbon source generated by thermal decomposition of organic matters to the surface of molybdenum oxide by using inert carrier gas in a rapidly-heated tubular furnace to trigger a carbonization reaction, directly exposing the furnace tube in air, and rapidly reducing the temperature of a reaction area to be below the carbonization reaction temperature by combining with an air blowing device; the carbonization reaction is terminated in time, and alpha-phase MoC is effectively prevented from being continuously converted into other high-temperature derived phase carbides. The preparation process does not involve high-pollution ammoniation treatment and tedious cleaning, filtering and drying processes, does not depend on high-cost precious metal induction, does not need dangerous alcohol / hydrocarbon / oxycarbide reaction gas, is simple in flow, low in energy consumption and short in period, and is suitable for industrial production. And the high-purity alpha-phase MoC particles can be obtained only by controlling the mass ratio of the carbon source to the molybdenum oxide, quickly heating and cooling and the like. The invention further discloses application of the pure alpha-phase MoC particles in a water electrolysis hydrogen production reaction, and the result shows that the pure alpha-phase MoC particles prepared through the method can stably catalyze the hydrogen evolution reaction.
Owner:DALIAN UNIV OF TECH

A partial observable petri net based fault diagnosis and optimal sensor placement method for high-speed railway signal system

The application discloses a partial observable Petri net fault diagnosis and optimal sensor configuration method of a high-speed rail signal system, and comprises the following steps: step 1, establishing a label Petri net model of the high-speed rail communication signal system; step S2, constructing a corresponding proof net model of the label Petri net system; step S3, constructing basic bad paths of the label Petri net system; the partial observable Petri net fault diagnosis and optimal sensor configuration method of the high-speed rail signal system; step S4, converting each basic bad path into corresponding inequality constraint conditions; step S5, applying a related program package to a corresponding integer linear programming problem to obtain an optimal solution of transition re-marking. The application fuses the proof net and system structure analysis technology, and the analysis process does not need to enumerate the entire state space, so that the calculation complexity of the algorithm is reduced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Phase-change-free preparation method of sodium vanadium phosphate material

The invention relates to the technical field of battery materials, in particular to a phase-change-free preparation method of a sodium vanadium phosphate material, which comprises the following steps: respectively weighing amorphous vanadium oxyhydroxide, a phosphorus source, a sodium source and a carbon source, mixing, and carrying out ball milling for 1-7 hours to obtain a precursor; and calcining the precursor at 600-1000 DEG C for 6-10 hours, and cooling to obtain the Na3V2 (PO4) 3 material. Crystalline vanadium oxide in the prior art is replaced by amorphous hydroxyl vanadium oxide, and all the raw materials react in the subsequent ball-milling and mixing process, so that fusion and conversion of multiple phases are avoided in the subsequent high-temperature sintering process, generation of impure phases is avoided, and the consistency and electrochemical performance of the sodium vanadium phosphate material are improved.
Owner:SICHUAN UNIV

A type of sweet-scented black tea and its fermentation method

ActiveCN121040539BAvoid excessive oxidative fermentationavoid conversionPre-extraction tea treatmentClimate change adaptationBiotechnologyContinuous light
This invention provides a sweet-scented black tea, relating to the field of fermented black tea preparation. It is obtained through a preparation process of withering, rolling, fermentation, and continuous light fermentation drying. Rolling involves cyclically rolling withered leaves using a light-heavy-light pressure method to obtain rolled leaves. Fermentation involves breaking up the rolled leaves and placing them in a fermentation chamber or fermentation machine for fermentation at a temperature of 28-30℃ and a humidity of not less than 90%, for 3 hours with stirring every hour to obtain fermented leaves. After fermentation, continuous light fermentation drying is performed to obtain the sweet-scented black tea. This black tea utilizes a specific tea-making process, namely, continuous light fermentation drying after fermentation by introducing a dry mixed gas. This achieves light fermentation during the drying process, allowing fermentation to continue throughout the entire drying process, improving the persistence of the fermentation process, avoiding excessive oxidation and fermentation of the tea sample, and ensuring the long-term and stable nature of the fermentation.
Owner:CHONGQING ACAD OF AGRI SCI