270results about How to "No danger" patented technology

The invention discloses a water epoxy floor coating which is a double-component emulsion coating comprising a component A and a component B, wherein the component A comprises water, a water epoxy curing agent, an addition agent, a filler and paint; and the component B comprises liquid epoxy resin, a reactive diluent and an environmentally-friendly type organic solvent; and the proportion of the component A to the component B is 10:3. The water epoxy floor coating has the advantages of the avoidance of the environmental pollution and the harm to the health of the human body, strong ventilation property, suitability for moist base planes and satisfaction of environmentally-friendly requirements and can be widely applied to the field of the industrial floor coating.

The invention belongs to the immunity application field, which relates to the related fields of animal molecular biochemistry and the immunology, etc. The invention discloses a reagent kit used for fast testing the antibody of Newcastle Disease, which comprises a case body, and the test paper card and sample diluent equipped inside the case body, wherein, the test paper card is formed by the absorption pad, nitrocellulose membrane, gold-label pad and sample pad affixed in turn on the non-absorbent supporting flake by taking the sample pad, absorption pad and the HN recombinant proteins coated with the Newcastle Disease as the detection line and the HN recombinant proteins coated with anti-mouse IgG as nitrocellulose membrane of the quality control line. The reagent kit used for testing the corresponding antibody has the obvious advantages of strong specificity, high sensitivity, easy operation and fast diagnosis.

The invention discloses a double side coated solvent-free polyurethane laminating adhesive, which comprises a component A and a component B, wherein the component B is prepared from one or a mixture of any two or above of polylol a of which the carbon chain length is C12 or below, polylol b with at least two degrees of functionality and above, vegetable oil modified polylol c, epoxy resin, acrylic resin and silicane resin, and a curing speed regulator d; besides being prepared from these ingredients, the component A is also prepared from a polyurethane prepolymer generated by the reaction of aromatic and/or aliphatic and/or alicyclic diisocyanate. The invention also discloses a preparation method, a coating process and application of the double side coated solvent-free polyurethane laminating adhesive. The problem that an existing solvent-free laminating adhesive needs to be previously mixed before being coated is solved.

The invention discloses a biological ink used for 3D biological printing and a preparation method thereof. The biological ink comprises the following components in percentage by mass: 8%-20% of a hydrophilic polymer with the crosslinking function, 10-20% of a water-soluble enzyme with the crosslinking function, 0.1%-1% of bacterial cellulose, and the balance a sterile PBS solution. The biologicalink can be used for 3D printing after mixed with cells, and the shear thinning properties of the used materials make the biological ink have the characteristics of self-supporting after extrusion. Theused materials have good cell compatibility, the enzyme crosslinking agent forms a hydrogel at physiological temperature (about 37 DEG C), the reaction conditions are mild, the cells are not damaged,a hydrogel support has relatively good stability in a culture medium, and thereby cell proliferation can be supported.

The invention provides a surface processing method of a strip laser medium. According to the method, high surface figure accuracy and excellent surface smoothness can be obtained by the strip laser medium at the same time. The surface processing method of the strip laser medium comprises the following steps of: bonding and hanging the cut strip laser medium by a binder; respectively grinding and pre-polishing two large surfaces on a plane grinder; hanging the pre-polished strip laser medium in an elastic adsorption manner, and precisely polishing the strip laser medium after being hung in the elastic adsorption manner on the plane grinder by a synthesis polishing plate. By adopting the surface processing method of the strip laser medium provided by the invention, hanging in the elastic adsorption manner is adopted by precisely finishing; the operation is simple and convenient; a problem of surface deformation after a element is taken off is not caused; glass or crystal for tripping does not need to be adhered around the work-piece, and a risk of edge breakage or angle breakage of the element in a processing process is avoided.

The invention discloses a norovirus RNA fragment-containing pseudoviral particle and a preparation method thereof. The pseudoviral particle is a spherical RNA-protein complex which is prepared by coating a norovirus RNA with an MS2 bacteriophage coat protein. The pseudoviral particle is prepared by the following steps: designing and manually synthesizing a primer and obtaining a target gene MS2 by a by PCR (polymerase chain reaction) method; connecting the target gene MS2 to a plasmid pET-28b(+) to obtain a recombinant plasmid pET-28b/MS2; connecting the recombinant plasmid pET-28b/MS2 with a NV fragment to obtain a recombinant plasmid pET-28b/MS2/NV; guiding the obtained recombinant plasmid pET-28b/MS2/NV into escherichia coli for prokaryotic expression; and precipitating a virus-like particle by a polyethylene glycol method, wherein the obtained virus-like particle is the norovirus RNA fragment-containing pseudoviral particle. The pseudoviral particle can be used as a standard product and a quality control product for RT-PCR detection, is non-infectious, safe, reliable, and good in stability, and has an RNase-resistant characteristic.

The invention discloses an elevator mechanism of an automatic stacking device. The elevator mechanism of the automatic stacking device comprises a hoisting cylinder and a connecting frame; a cylinder body of the hoisting cylinder is fixed on a horizontal walking frame; a piston rod of the hoisting cylinder is hinged with the connecting frame; a guide post which is arranged on the connecting frame slides in a guide sleeve on the horizontal walking frame; the elevator mechanism also comprises a hoisting control device and a position induction mechanism; the hoisting control device comprises a double-pump oil supply unit, a multi-stage pressure control unit and a control balance loop unit; the control balance loop unit is connected with an inlet-outlet opening of the hoisting cylinder through a pipeline; the position induction mechanism comprises an induction ruler and an inductor; the induction ruler is fixed on the horizontal walking frame; and the inductor is fixed on the connecting frame. The elevator mechanism of the automatic stacking device has a simple structure and low failure rate; a hoisting speed of the hoisting cylinder is adjusted gradually under the control of the hoisting control device; the elevator mechanism acts steadily; positioning is accurate when unburned bricks are stacked; the danger that the hoisting cylinder does not speed up suddenly or the speed is out of control is avoided; and the elevator mechanism of the automatic stacking device and the control method are safe and reliable, and guarantee the quality of brick stacking.

The invention belongs to the immunity application field, which relates to the related fields of animal molecular biochemistry and the immunology, etc. The invention discloses a reagent kit respectively used for antibody of infectious bronchitis of chicken, which comprises a case body, and the test paper card and sample diluent equipped inside the case body, wherein, the test paper card is formed by the absorption pad, nitrocellulose membrane, gold-label pad and sample pad affixed in turn on the non-absorbent supporting flake by taking the sample pad, absorption pad and the NP recombinant proteins coated with the nucleocapsid of the infectious bronchitis of chicken as the detection line and the NP recombinant proteins coated with anti-mouse IgG as nitrocellulose membrane of the quality control line. The reagent kit used for testing the corresponding antibody has the obvious advantages of strong specificity, high sensitivity, easy operation and fast diagnosis.

The invention relates to a hollow fiber ultrafiltration membrane water purifier comprising a shell, a control mechanism, a coil, a cleaning slide block and a hollow fiber ultrafiltration membrane, wherein the cleaning slide block is fixedly connected with the hollow fiber ultrafiltration membrane into a whole; and a water producing port and a water inlet are arranged on the shell. Water to be filtered enters the water purifier from the water inlet, and after pollutants in the water are adsorbed by the hollow fiber ultrafiltration membrane, purified water flows out of the water producing port, therefore, the water purifier achieves the effect of water purification. Because an electromagnetic transmission mechanism is formed from the cleaning slide block and the coil, when the water purifier is cleaned, the coil is switched on to alternate voltage so that an alternating magnetic field is generated, the cleaning slide block drives the ultrafiltration membrane to do a reciprocating motion under the action of the alternating magnetic field so that the pollutants on the ultrafiltration membrane are removed, therefore, the purpose of cleaning is achieved. By adopting electromagnetic transmission, the cleaning method has simpler and more direct cleaning process, and because the filtration membrane is a bidirectional spiral hollow fiber ultrafiltration membrane, the hollow fiber ultrafiltration membrane water purifier has good filtration effect and high efficiency, and the method can be widely applied to cleaning the hollow fiber ultrafiltration membrane water purifier.

The invention relates the hot melt adhesion technology, comprising the following steps: a heat composite; b cutting; c stitching; d up-stripping and checking; e heat pressing; f checking. The technology can separately control temperature, press and time, has no solvent and environmental pollution; its binding power is ten times than that of pressure-sensitive adhesive; the technology can accurately control the quantity, position and shape of adhesive material; the technology has fast curing speed, short adhesion time; the product made with the technology has advantages of high strength and good property.

The invention discloses a hybrid rocket engine igniter which comprises an igniter thread ring, an igniter box body, an igniter heat insulation layer and ignition powder. The igniter thread ring is connected with the igniter box body through a large thread, and therefore a cavity structure with inner and outer annular side walls is formed. The containing cavity is filled with the ignition powder which is composed of ignition materials and fuel. The igniter thread ring, the igniter box body and the igniter heat insulation layer are adhesively connected. The inner wall face of the igniter box body and the inner wall face of the igniter heat insulation layer are provided with fire outlet holes. A sealing belt is laid on the inner annular side wall of the igniter box body. It is ensured that the ignition powder is reliably sealed before the igniter works. One end of an igniter lead is provided with an ignition head which produces electric sparks after being powered on, and the other end of the igniter lead is provided with an electric wire. The igniter starts to work after the igniter lead is powered on. The hybrid rocket engine igniter has the advantages that the start energy is high, the energy is released rapidly, the engine ignition delay is short, and the ignition delay time of the improved igniter is shorter than 1s when a large-flow hybrid rocket engine starts.

The present invention relates to a live pig hanging automatic processing system. The live pig hanging automatic processing system comprises a supporting bottom plate, a cutting plate, a guiding plateand a stablizing device, the cutting plate is arranged on a top part of a right end of the supporting bottom plate, the fixing device is arranged on a top part of the cutting plate, a left end of thecutting plate is connected with a right end of the guiding plate, and a left end of the guiding plate is arranged on a top part of a left end of the supporting bottom plate; and the stablizing devicecomprises a stabilizing bracket, a positioning telescopic body, a positioning spring, positioning push rods, a positioning connecting plate, positioning wheels, an external support mechanism, an extrusion mechanism and a separation guide block. The live pig hanging automatic processing system can solve problems that during live pig half cutting, many people are needed to assist cutting of the livepigs, the live pig half cutting has risks, the live pig half cutting is uneven, the live pig half cutting cuts thoracic cavity of the live pigs and causes waste, the live pig cutting is incomplete, and can achieve functions of positioning conveying and pressing cutting of the live pigs.

A heat pump type closed sludge drying system comprises: a drying room (1), an upper conveyor belt (2) which is arranged on the upper part of the drying room and used for conveying sludge, and a lowerconveyor belt (3) which is arranged on the lower part of the drying room and used for conveying sludge. The heat pump type closed sludge drying system also comprises a system housing (4) at one side of the drying room (1), where the top of the drying room and the top of the system housing are connected to form an air return channel (5). A main air supply port, connected with the system housing, isformed in the side wall where the lower part of the lower conveyor belt is connected with the system housing. The system also includes a first heating circulation system, a second heating circulationsystem and an air flue circulation system that are arranged inside the system housing. The sludge drying system and the control method of same are energy-saving, environment-friendly and high-effective.

A preliminary forming device capable of efficiently applying a pattern even on a deep-drawn or a complicatedly shaped formed product without applying any special working on an existing metal mold of a main forming device, a preliminary forming method using the preliminary forming device, and a main forming method; the preliminary forming device, comprising a film feeder (25) feeding a film with pattern (4) to a preliminary forming part (F) for performing a preliminary forming, a heater (30) movable closely to and away from the preliminary forming part and heating the film with pattern before the preliminary forming so as to be plasticized at the preliminary forming part (F), a preliminary forming mold (22) for preliminarily forming the film with pattern, and a film feeder (50) to feed a forming film for releasing the film from the mold after the preliminary forming of the film with pattern and inserting the film into a main forming mold, wherein, after the forming film is inserted into the main forming mold, resin is fed to provide a formed product with pattern, the preliminary forming being performed by vacuum forming or compressed air forming.

The invention provides a method for manufacturing sheet-shaped packaging materials. The method comprises the following steps: expanding a paper core layer and punching an opening hole, wherein a fiber direction of the paper core layer extends along the length direction; printing a printing layer on the outer surface of the paper core layer; extending a pattern and character direction of the printing layer along the width direction of the paper core layer; extruding and laminating a thermoplastic material on the printing layer to form an outermost layer; extruding and laminating a thermoplastic material on the inner side face of the core layer to form an intermediate layer; compounding a barrier layer on the inner side face of the core layer by the intermediate layer; extruding and laminating a thermoplastic material on an aluminum foil layer to form a binding agent layer; extruding and laminating a thermoplastic material on the binding agent layer to form an innermost layer; pressing a vertical fold line, a transverse fold line and an inclined fold line on one side of the outermost layer; and slitting a continuous packaging material of the plurality of sheet-shaped packaging materials to form the single-sheet packaging materials. The packaging materials can have a relatively good fold line effect by using relatively small pressure when the fold lines are pressed.

The present invention relates to novel crystalline forms of 11-cyclopropyl1-5, 11-dihydro-4-methyl-6H-dipyrido[3,2-b: 2′, 3′-e][1,4]diazepin-6-one, generically known as Nevirapine, and processes for making thereof. More specifically, the present invention provides novel crystalline Form-II and Form-III of Nevirapine.

The invention discloses a method for promoting germination of the seed of gomuti palm. The method comprises the following steps: step 1, uniformly mixing the seeds of gomuti palm with wet perlite according to a volume ratio of 1: 3, sealing the obtained mixture and subjecting the mixture to lamination at 10 to 15 DEG C for 90 d so as to obtain laminated gomuti palm seeds; and step 2, filling a brown paper bag with the laminated gomuti palm seeds, placing the brown paper bag in a drier equipped with drying silica gel and carrying out drying at room temperature for 3 h so as to obtain the dried gomuti palm seeds. The method has the advantages of simple operation, low cost, easiness in popularization, capacity of improving the germination rate of the seeds, etc.

The invention discloses an air-based oxygen-making electrolyte membrane. The electrolyte membrane comprises an electrolyte layer, and a cathode electrode used as an air side electrode layer and an anode electrode used as an oxygen side electrode layer positioned on two sides of the electrolyte layer; and the cathode electrode and the anode electrode have the same compositions. In addition, the invention further discloses an oxygen-making method of the electrolyte membrane and prepared oxygen products. The ionic conductivity of the electrolyte membrane is 100% in selectivity, the electrolyte membrane is dense, and pure oxygen can be obtained conveniently and efficiently; and in addition, the electrolyte membrane is simple in production of device assemblies, high in yield and low in energy consumption, so that breakthrough on the technical bottleneck of demands of most advanced industries on high-purity oxygen is made.

The invention relates to the field of medicines, and in particular relates to a method for preparing dapoxetine hydrochloride. The method comprises the following concrete steps: (1) by taking chiral L-phenylalanine hydrochloride as a starting material, and reducing by adopting a reducing system to obtain an intermediate II; (2) performing Eschweiler-Clark reaction on the intermediate II and paraformaldehyde or formaldehyde to obtain an intermediate III; and (3) performing Williamson aethrization reaction on the intermediate III and 1-naphthaline to obtain the dapoxetine hydrochloride. According to the invention, chiral L-phenylalanine hydrochloride is used as the raw material, so resolution of a product is avoided, the raw material is easily obtained and relatively low in price, conventional equipment can meet production requirements, expensive and virulent reagents are not used, reaction conditions are mild, pollution is little, control is easy and industrialized production is facilitated.

The invention relates to a method for preparing glycerin zinc. The method comprises the steps of placing zinc acetate glycerite into a microwave oven, carrying out reflux reaction by microwave heating under stirring till the solution becomes faint yellow and then stopping microwave heating to obtain the glycerin zinc. In the invention, the reaction occurs under normal pressure without any catalyst, the reaction condition of high-temperature heating is avoided, the reaction time is shortened to be within 10 minutes, any impurity can not be introduced, and any treatment is not needed for the reactant and product. The invention has simple and easy process, is safe and reliable and has no danger or environmental pollution. The glycerin zinc nanometer particles can be obtained by controlling the concentration of the zinc acetate glycerite, the microwave heating power and the reaction time.

A system designed to catch almost any kind of pest including rodents and insects. The system can be adapted for use in almost any environment (homes, businesses, factories, farms, outdoors, etc.) The system employs no poisonous sprays or powders which might be environmentally harmful and poses no danger to domestic pets or farm animals. A preferred embodiment of the present invention includes a conduit arrangement having multiple inlets opening to the ambient environment. A timer controlled vacuum motor or fan periodically induces air flow through the conduit system which will draw pests into the system. The conduit has an outlet connected to a small gas-fired furnace. The pests are injected into the furnace to be cremated. The furnace is equipped with an ash clean-out door for removal of the cremated residue, which residue may safely be disposed of.

The invention discloses a high-rise building fire rescuing device. The high-rise building fire rescuing device is simple in structure, when the high-rise building fire rescuing device is used, a fixing frame coordinates with extensible and retractable rods to be fixed to a window or a door frame of an inner wall of a building, and it is guaranteed that the transverse lengths of the fixing frame and the extensible and retractable rods are larger than the width of the window or the door frame. Fixing lugs are located on the middle portion of the side face of the fixing frame, a winch is installed between the two fixing lugs on the side face of the fixing frame, and the fixing lugs are used for abutting against the lower edge of the window and cannot move up or down in a working state. According to the high-rise building fire rescuing device, the winch is used as power, a stable lock switch is used for controlling the winch to lift or release a stable lock and a rope, and the situation that friction between the rope and the building wall affects stability is avoided. A human protection device is connected with the stable lock, a waist fixing band and leg fixing bands are used in cooperation, safety and reliability are achieved, and the human body is protected against danger in the downward sliding process. The high-rise building fire rescuing device is relatively small and safe and reliable when put at home at ordinary times and can also be put in a fire protection cabinet of a floor.