44results about How to "Reduce operational technical difficulty" patented technology

The invention discloses a prescription of a ceramic-based friction material used in a vehicle braking friction pad, comprising the components (by weight): adhesives 5 percent-15 percent, intensifier 23.5 percent-33.5 percent, grinding aid 0 percent-7 percent anti-wearing lubricant 11.3 percent-21.3 percent, elastic toughening agent 5.7 percent-15.7 percent and filling material 27.5 percent-37.5 percent. The total amount of the components is 100 percent. The materials of the invention can be processed and molded into the vehicle braking pad that is applicable to friction braking on a vehicle braking device. The anti-wearing performance of the pad can be greatly enhanced, thereby reducing noise pollution and promoting the performance of the braking system of the vehicle.

The invention provides a set of nucleic acids of a liquid-phase gene chip for synchronously detecting five porcine viruses, which comprise forward and reverse primers and hybrid probes for porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), porcine pseudorabies virus (PRV), classical swine fever virus (CSFV) and porcine parvovirus (PPV). The invention also provides a multiplex liquid-phase chip high-flux molecular biology detection method of the five porcine viruses. According to the method, porcine virus nucleic acids in the sample to be detected are extracted to perform multiplex unsymmetric nucleic acid amplification / multiplex liquid-phase gene chip (suspension chip) combined detection, thereby synchronously and accurately detecting and identifying the five porcine viruses in the sample to be detected. The method has the advantages of high specificity, high sensitivity, high stability, high flux and high detection speed, and is simple to operate.

The invention relates to a method for preparing a porous array ZnO thin film in a graded structure by an electro-deposition method. The method comprises the following steps of: 1) respectively assembling PS (Poly Styrene) moulds with different numbers of layers and grains on FTO (Fluorinedoped Tin Oxide) conducting glass, and placing the moulds dried at room temperature into a vacuum drying box to dry; 2) using the moulds prepared by the step 1) as a working electrode, a platinum sheet as a counter electrode, a saturated calomel electrode as a reference electrode and zinc salt aqueous liquor as a deposition liquid, depositing for 10-30minutes at -1.3V; 3) washing the electro-deposited moulds by secondary deionized water, and placing the moulds dried at room temperature into the vacuum drying box to dry; and 4) soaking the moulds in a toluene liquid to dissolve and remove the PS moulds and taking out the ZnO thin film. According to the invention, the ZnO porous array thin film in the graded structure with controllable numbers of layers and aperture can be prepared, so that the operating technical difficulty is reduced. The ZnO porous array thin film in the graded structure with controllable numbers of layers and aperture is prepared by the electro-deposition method.

The invention relates to a method for producing a blast furnace water-cooling wall by using lost foam casting technique. Foam plastics is utilized to make the model of the lost foam of the blast furnace water-cooling wall, meanwhile, after a supporting pillar is welded on a simmered cooling water pipe of the blast furnace water-cooling wall and masking paste is brushed, the cooling water pipe is fixedly installed in the model of the lost foam of the blast furnace water-cooling wall, is treated with joint sealing, finishing, the painting of masking refractory coating, drying and ram-jolt by being arranged in a molding box, and is poured with molten metal with qualified smelting under a negative pressure state; and after cooling, box-opening, trimming and processing are carried out, the blast furnace water-cooling wall product produced by the lost foam casting technique is obtained. The method can be used for the production of the blast furnace water-cooling walls with the materials of gray cast iron, ductile cast iron, low carbon steel, micro-alloying low carbon steel, pure copper and the like, all the performances of the blast furnace water-cooling wall are better than those of the blast furnace water-cooling walls with the same material and casted by san mold, the use amount of the moulding sand can be reduced by 90 to 95 percent, the procedure is simplified, the labor productivity is improved, the working environment of the workers is improved, the labor intensity and operation technical difficulty of the workers are reduced, and the method has good economic and social benefits.

The invention belongs to the field of chemical industry, and relates to a preparation method and preparation equipment for a composite polyiron water purifying agent. The preparation method comprises the following steps: adding waste sulfuric acid which is generated during a titanium dioxide preparing process into a reaction still; adding iron sulfate; adding water and carrying out stirring to fully dissolve the iron sulfate; adding hydrogen peroxide until the ferrous iron ions are oxidized fully; adding hot water; adding CaAl2O4 when the temperature rises to 60 DEG C; controlling the pH value at 2-3; separating the product. The preparation equipment comprises the reaction still, a waste sulfuric acid box, a hydrogen peroxide box and a hot water box; a stirring device is arranged in the reaction still; the waste sulfuric acid box, the hydrogen peroxide box and the hot water box are connected to the reaction still through pipelines and control valves respectively; a feeding opening and an air opening are formed in the top of the reaction still; a discharging opening is formed in the bottom of the reaction still; a receiving cylinder is arranged under the discharging opening. The equipment utilizes the waste sulfuric acid which is generated during the titanium dioxide preparing process and the iron sulfate to prepare the compound polyiron water purifying agent; dual benefits are gained.

The invention discloses an assembled cervical vertebra and unciform joint fusion cage, belongs to the field of medical instruments, and provides an assembled cervical vertebra and unciform joint fusion cage which is more convenient to implant and install. The assembled cervical vertebra and unciform joint fusion cage comprises an intervertebral support body and unciform joint fusion components, wherein each unciform joint fusion component comprises a circle of cofferdam; a bone grafting cavity which is through up and down is formed in the cofferdam; the unciform joint fusion components are correspondingly arranged on the left side and the right side of the intervertebral support body; the assembled cervical vertebra and unciform joint fusion cage further comprises a connecting piece; the intervertebral support body and the unciform joint fusion components are arranged in a split manner; and the intervertebral support body and the unciform joint fusion components can be assembled and installed through the connecting piece. According to the assembled cervical vertebra and unciform joint fusion cage, through the arrangement of the split structure, the implantation and installation canbe carried out in sequence during implantation and installation, so that the problem that the implantation is difficult due to the fact that the implantation is carried out at the same time when theintegrated structure is arranged is avoided. In addition, through the arrangement of the deformable cofferdam, the implantation and installation operation can be facilitated, the fitting effect is improved, and meanwhile, the early osteogenic fusion is facilitated.

The invention discloses a method for obtaining transgenic chickens through spermatogonial-stem-cell in vivo transfection mediated by lentivirus vectors. The method comprises the steps of directly injecting a lentivirus vector into a testis of a cock, transferring genes of endogenous spermatogonial stem cells to generate transgenic sperms, mating the cock with a normal hen and then obtaining the transgenic chickens. Through the way with the endogenous spermatogonial stem cells, the method for obtaining transgenic chickens through spermatogonial-stem-cell in vivo transfection mediated by lentivirus vectors can avoid opening poultry eggs, and has the advantages of low virus consumption, fast group extension and capability of stable passage.

The invention discloses a method for inducing regeneration of adventitious buds of heuchera micrantha. According to the method, petioles or leaves of aseptic seedlings of heuchera micrantha are takenas explants, and the explants are inoculated on an induction medium for induction culture to obtain the adventitious buds of heuchera micrantha, wherein the induction medium adopts MS as a basic medium, 2-4wt.% of saccharose, 0.5-0.7wt.% of agar powder, 0.05-0.15mg / L of naphthaleneacetic acid, 0.1-0.2mg / L of thidiazuron or 0.2-1.0mg / L of 6-benzylaminopurine are added into the basic medium, and thepH value is 5.5-6.0. By adopting the method provided by the invention, the step of transferring a self-induced callus culture medium to an adventitious bud differentiation medium is simplified, the problem of vitrification of adventitious buds is effectively solved, and the method is simple and convenient to operate, economical and effective, and can provide a technical support for rapid propagation and new species cultivation of heuchera micrantha seedlings, and the improvement of the heuchera micrantha traits with a genetic engineering method.

The invention discloses an MAG welding process for an austenitic stainless steel pipeline. The MAG welding process comprises the following steps of pre-welding preparation: selecting a moderate-thickness plate and above 108mm austenitic stainless steel as a base material, selecting a pipe, a liner and a stainless steel welding wire, cutting a groove in the base material through processing, and carrying out welding; protective coating applying: blending acetone for coating powder to form a paste before welding, and uniformly applying a coating within 10mm range of the inner part of the pipe groove; test piece assembly: attaching the liner to the pipe groove, and positioning and point-fixing the liner and the groove; and welding: putting welding equipment at the horizontal position directlyabove the pipe, clamping the pipe by a rotating device, welding the pipe in two semicircles, and welding a bottoming layer, a filled layer and a cover layer in sequence. The MAG welding process adoptsfull-automatic and semi-automatic MAG welding, a stainless steel isosceles trapezoid liner plate is applied to the front side of the groove, and the stainless steel back side adopts the protective coating, so argon filling on the back side is eliminated, the welding efficiency and quality are improved, and the welding cost is reduced.

The invention discloses a sugar-free open tissue culture rapid seedling raising method of of wild panax japonicas. The rapid seedling raising method comprises the following steps: A, taking the stems or leaves of wild panax japonicas seedlings, and performing surface sterilization treatment; B, inoculating explants obtained through the treatment in the step A in a panax japonicas sugar-free tissue culture initial medium, and placing in a transparent plant growth box with an upper opening to carry out initial culture; C, screening rootless seedlings cultured in the step B and washing with sterile water, and cutting the cleaned rootless seedlings into single seedlings; D, inoculating the single seedlings obtained through treatment in the step C in a panax japonicas sugar-free tissue culture subculture medium, placing in the transparent plant growth box to carry out subculture; E, transplanting the plants obtained in the step D in humus soil and vermiculite mixed soil, and cultivating in a conventional way. By the application of the method, the differentiation rate of the explant is 90% or more, the growth rate can reach 4.2, the contamination rate is extremely low, qualified and vigorous tissue culture seedlings capable of being planted can be obtained, and the survival rate of transplanting is 98% or more.

The invention discloses a non-spherical surface-shaped swing arm type detection device and method for achieving measuring head pose self-adjustment. The existing swing arm type contourgraph is difficult to operate due to multiple degrees of freedom. A double-capacitor sensor measuring head is fixed on a rotating table surface of a machining platform; a measuring device comprises a horizontal driving mechanism, a swing arm rotating platform, a measuring arm, a measuring head vertical adjusting device and a measuring head module; the measuring arm consists of a rotating swing arm and a movable swing arm; and the measuring head vertical adjusting device comprises an X-axis adjusting device and a Y-axis adjusting device. The non-spherical contact type measuring head vertical state fine adjusting and aspheric contact type measuring head and the rotating table face of the machining platform can be automatically finished, the operation technology difficulty is reduced while the detection precision is ensured, the efficiency of the aspheric contact type measuring head adjusting process is improved, and the cost of the aspheric surface manufacturing process is lowered.

The invention discloses a double-end sealing device for electrodeless lamps, which comprises annular fire heads, wherein the annular fire heads are two open fire heads, the two annular fire heads are arranged on a same plane, rotating axes of the two annular fire heads are parallel, the lower ends of the annular fire heads are provided with a control block, the control block is connected with a transmission device, the transmission device is connected with a driving device, and the driving device drives the two annular fire heads to synchronously rotate through the transmission device. According to the invention, in the processes of sealing and heating electrodeless lamp tubes, the two ends of products are heated and sealed synchronously, so that the fusion is uniform, the stress is significantly reduced, the unqualified rate is low, the rate of finished products is improved, the production efficiency is increased by 3-5 times, the labor is reduced, the difficulty of operation techniques is reduced, and the operation process of the operating personnel at a high temperature is reduced, therefore, the device is applicable to the processing of electrodeless lamp tubes in various specifications and sizes, and reduces the cost of production.

The invention discloses a handheld intelligent fusion angiography navigation system applied to an autopsy process. The handheld intelligent fusion angiography navigation system comprises a handheld angiography device, an angiography navigation system display device and a magnetoelectric navigation device, wherein the handheld angiography device is used for injecting a contrast agent into a corpse,penetrating into a detected organ of the corpse and generating an angiographic image of a detected blood vessel of the corpse; the angiography navigation system display device is used for displayinga three-dimensional stereoscopic model established on the basis of the blood vessel in the detected blood vessel of the corpse; and the magnetoelectric navigation device is used for providing positioninformation of a dissection instrument and internal tissues and organs of the corpse in a true blood vessel wall character. According to the handheld intelligent fusion angiography navigation system,experiments and registration error calculation are carried out on simulated conduit path data, the accuracy and feasibility of a whole registration algorithm are verified, special equipment suitablefor angiography is designed, and a corpse blood circulation system is built, so as to simplify operation steps and reduce the technical operation difficulty.

The invention provides a novel mucous membrane incision knife integrating two mucous membrane incision knives and a submucous membrane injection function. The two mucous membrane incision knives comprise a traditional T knife and an innovative arch knife, and meanwhile the submucous membrane injection water spraying function is combined. The novel multifunctional mucous membrane incision knife comprises a handle part and a sheathing canal part, and the sheathing canal part comprises an outer sheathing canal, two incision knives (the T knife and the arch knife), a T knife traction guide wire cavity, an arch knife traction guide wire cavity (a dual-purpose injection cavity), a first heat-shrinkable sleeve, a second heat-shrinkable sleeve, a first high-frequency electrode plug, a second high-frequency electrode plug and an injection connector. According to the invention, two mucous membrane incision modes of an endoscopic mucous membrane dissection operation are realized; especially, an innovative arch knife mucous membrane incision mode greatly improves operation efficiency and safety, meanwhile, submucous tissue can be injected with water in the operation, the perforation occurrencerate of the digestive tract tube wall can be reduced, operation time is shortened, operation efficiency and safety are improved, the difficulty of an ESD technology is reduced, and application and popularization of the ESD technology are facilitated.

The invention discloses a mouse lung organ culture method, which comprises the following steps: using 50-80 [mu] m mouse lung tissue primary epithelial stem cell spheres for mouse lung organ culture, adding matrigel according to the number of lung spheres, incubating a mixture of the lung spheres and Matrigel basement membrane matrigel to cure the matrigel, and culturing by using a lung organ culture medium. Two different forms of lung organs can be simultaneously differentiated and formed under the same culture system.

The invention discloses a dam defect detection system based on mechanical wave positioning and a working method thereof. The system comprises a submersible, a vibration sensor and an information processing unit; the submersible is provided with a camera and a mechanical arm; the camera is used for observing a reservoir dam body and recording a crack image; the front section of the mechanical arm is provided with a vibration source generator; the vibration sensor is arranged on a dam to be detected and is used for acquiring mechanical waves generated when the vibration source generator knocks the dam; and the information processing unit is used for processing the mechanical wave data acquired by the vibration sensor. The dam defect detection system based on mechanical wave positioning and the working method thereof have the advantages of high positioning precision, low operation technical difficulty and wide application range.

The invention discloses a silicon-chromium alloy production method. The method comprises the following steps of (1) mixing chromium concentrate powder and reducing agent powder with a binding agent and water evenly to obtain a mixture; (2) conducting pellet pressing and pelletizing treatment on the mixture for mixture molding to obtain molded pellets; (3) drying the molded pellets to obtain dried pellets; (4) conducting reduction roasting to obtain roasted pellets; and (5) adding the roasted pellets, silica and coke into an electric furnace for deep reduction, and obtaining silicon-chromium alloy. The invention further discloses a silicon-chromium alloy production system. The silicon-chromium alloy production system comprises a mixing device, a pelletizing device, a green pellet screening device, a drying device, a rotary hearth furnace device, a feeding device and an electric furnace device. According to the silicon-chromium alloy production method and system, the silicon-chromium alloy is produced by using the chromium concentrate powder; the technical difficulty of smelting operation of the silicon-chromium alloy is reduced; compared with a traditional silicon-chromium alloy two-step method (high-carbon ferro-chrome and silicon-chromium), the power consumption for smelting of the silicon-chromium alloy is reduced by 1%-7%; and the chromium metal recovery rate of silicon-chromium alloy smelting is increased by 3%-5%.

The invention relates to a leucoderma electric pyropuncture instrument. The instrument is characterized by comprising a high-frequency power generator and a treatment pen, wherein the high-frequency power generator comprises a circuit monitoring system, an output end, a back-flowing end, an adjusting knob, a power supply switch and a power indicator, and the treatment pen comprises a needle-shapedelectrode and an electrode; the needle-shaped electrode is contact with a patient, and the other end is connected with the electrode; the other end of the electrode is connected with a guiding wire joint at the output end through a guiding wire. The instrument has the advantages that a needle body can be efficiently and uniformly heated by electricity to simulate the local thermal stimulation onerythra of a fire needle, the empyrosis risks and fire disaster potential safety hazards which might be caused by opened fire are avoided, and the regeneration effect of leucoderma vitiligo leukoplakia is promoted.

The invention discloses a water-based industrial artistic coating and a preparation method thereof. The artistic coating is prepared from water, a dispersant, GN-90, a wetting agent, a neutralizer, thixotropic resin, titanium dioxide, filling powder, water-based acrylic resin emulsion, water-based epoxy resin emulsion, a thickener, a defoamer, a film-forming agent, a water-based colorant and the like. The water-based industrial artistic coating disclosed by the invention has ultralow VOC (Volatile Organic Compounds) content, does not contain benzene and free heavy metals, and has no fire potential safety hazard in production, transportation, machining and storage. In the invention, proportion solid content is high, a unit coating area is large, and unit cost is low. In addition, the coating further has the advantages of high hardness, scratch resistance, high drying speed, simplicity and convenience for operation, small use amount, high efficiency, firm surface pattern, excellent protective decorative effect and the like, and the gap of the water-based industrial artistic coating is filled in.

The invention provides a fish specimen making method, which comprises the following steps of: absorbing water on the surface of a fish to be subjected to specimen preparation, coating a UV epoxy resin adhesive on the fish body, and solidifying the epoxy resin after ultraviolet radiation; putting the treated fish into a mold, dissolving a mixed solution of epoxy resin and polyether amine D-230, and adding the dissolved mixed solution into the mold, wherein the adding amount of the mixed solution is controlled so that the fish body is not completely covered; then standing and solidifying; carrying out high-temperature sterilization on the solidified specimen, cooling, pouring a mixed solution of epoxy resin and polyether amine D-230 into the mold in which the fish is placed, solidifying, and demolding; and coating UV epoxy resin adhesive on the demolded fish body specimen, and performing ultraviolet irradiation curing to complete the preparation of the specimen. According to the method, the safety of materials used in the actual operation process is high, the sterilization method used in the method is high-pressure steam sterilization and is green and free of pollution, and a formaldehyde solution is adopted in the sterilization method for dipping the specimen, is volatile and has toxicity, carcinogenicity and mutagenicity.

The present invention involves a method of preparation of a grading structure of the electrical sedimentary method of a multi -hole array ZNO film: 1), assemble the number of layers and particles with different particles and particle size on the FTO conductive glass, and put the income template after drying the temperature of the vacuum and dry it in the vacuum drying.Dry in the box; 2) The templates made by step 1 as the working electrode, the platinum sheet as the electrode, the saturated glyphosa mercury electrical reference electrode, the zinc salt water solution as the sediment, -1.3V deposition 10 ~ 10 ~30min; 3) The template after the step 2) The template after the electricity is accumulated was rinsed with a secondary ion water, and the vacuum drying box was dried in the vacuum drying box after the room temperature was dry.The present invention can prepare a hierarchical ZNO porous array film with a hierarchical structure that can be controlled by the number of layers and pores, reducing the difficulty of operating technology, and realizing the number of ZNO porous array films that can prepare the number of layers and pores with electrical deposition method, and have a classified structure.

A device for preparing a herbarium specimen of flower type medicinal plants is disclosed. The device includes a drying tank body, a hot-wind blower and a specimen collecting gear. The drying tank bodyis provided with a wind inlet and a wind outlet. A wind outlet of the hot-wind blower is connected to the wind outlet of the drying tank body in an interference fit manner. The specimen collecting gear is disposed at the wind outlet of the drying tank body and covers the wind outlet of the drying tank body in an interference fit manner. A process for preparing a herbarium specimen of flower typemedicinal plants is also disclosed. By adoption of the process, the manufacturing period of the specimen is short, moulding is achieved in one time, and the color of the specimen is close to an original color.

The invention provides a cleaning method of a thin-film solar cell bus bar welding joint. The cleaning method of the thin film solar cell bus bar welding joint is characterized by comprising the following steps of arranging a metal plate below the welding joint, directly welding on the metal plate, and then coating acid on the welding joint. The cleaning method of the thin film solar cell bus bar welding joint is simple in step and convenient to operate, and the welding joint does not need to be disassembled during cleaning, so that operation technical difficulty is reduced, and the influence of a cleaning method in the prior art on equipment machining stability is avoided.

The invention discloses an electric control system of a full-automatic double-head quilting machine. The electric control process of the whole machine is achieved through mutual operation of a power supply loop, a control circuit board, an operation box, a motor part, an electromagnetic valve, a sensor and a button. The power supply loop adopts a 380V alternating current power supply to provide amain power supply and is provided with a three-phase isolation intelligent transformer to supply power to a motor driver; the control circuit board adopts a single chip microcomputer STM32F103ZET6 asa CPU, is provided with an input / output interface and a motor control interface, and can be directly connected with IO equipment and the motor driver required by the machine; the operation box is connected with the control circuit board through a network cable; the machine structurally reflects the advantages of double heads and automatic feeding; a wireless transmission module is adopted, so thatwireless remote data transmission and downloading update are realized, and production management is facilitated; and the control system not only realizes high-speed performance, but also embodies thefunctions of different actions, speed change and the like of double heads, and realizes the quilting of super-thick materials, irregularity and high efficiency.

A test model and method for a floating tunnel under the joint action of earthquake and wave current. The test model includes a test tank, a test model pipe body, an anchoring system, a vibration generation and transmission system, and a sensing and measuring instrument. The vibration generation and transmission system includes a small Vibrating table, mechanical transmission device and sliding false bottom, the small vibrating table is installed directly above the test water tank through the load-bearing bracket, the table top of the small vibration table is connected with the sliding false bottom through the mechanical transmission device; the sliding false bottom is installed in the test water tank; The test model pipe body is installed on the sliding false bottom through the mooring system; a white background paper is pasted on one end of the test model pipe body; the sensing and measuring instruments include a gyroscope, an acceleration sensor, and a non-contact strain displacement measuring instrument. The invention realizes the dynamic response test of the suspension tunnel under the joint action of various seismic loads and wave current loads, greatly reduces the test cost, and provides a reliable basis for the design and construction of the suspension tunnel in the future.

The invention relates to a graphite nodule moderated molten salt reactor comprising a reflective layer accommodated in a cladding, the reflective layer defines an active zone, the active zone comprises a first zone and a second zone, a liquid fuel molten salt flows from bottom to top to fill the first zone and the second zone, a plurality of graphite nodules playing a moderated role are only stacked in the first zone. According to the graphite nodule slowing-down molten salt reactor disclosed by the invention, liquid molten salt is used as a fuel, the graphite nodules are used as moderator, onone hand, the advantages of the molten salt reactor are inherited, and the refueling cost and the technical difficulty are reduced, on the other hand, the manufacturing process is simplified, and dueto the fact that the graphite nodules are simple in shape, manufacturing equipment is miniaturized, reactor entering and discharging are more flexible, and the operation technical difficulty is greatly reduced.