79results about How to "Wide range of available" patented technology

A catalytically activated transient decomposition propulsion system provides thrust by decomposing flow controlled propellant in contact with a catalyzing agent using a fixed volume of liquid propellant that is placed in contact with the catalyst within the decomposition chamber by a calibrated flow control valve. After injecting the liquid propellant into the decomposition chamber, the valve returns to the closed position while surface tension holds the liquid within the decomposition chamber until complete decomposition and exhaust of the warm gaseous products through a converging and diverging nozzle occurs. The increasing and decreasing transient pressure in the decomposition chamber changes each cycle in response to flow control valve actuation as the decomposition process is repeated.

The invention discloses a wire reel clamping jaw and a using method thereof. The wire reel clamping jaw comprises a connection base, the front end face of the connection base is provided with a bearing plate, a base plate and an air cylinder, the air cylinder is fixed to the base plate, and an air cylinder shaft is connected with a transmission plate. The transmission plate is connected with at least three jaw bodies through a linkage type transmission mechanism fixed to the bearing plate, one ends of the jaw bodies are in pivoted connection with the base plate, the other ends of the jaw bodies extend to the front end of the bearing plate, and each jaw body is in pivoted connection with the codirectional ends of a first driving rod and a second driving rod of the linkage type transmissionmechanism, and is driven by the air cylinder to rotate around a pivot shaft connected with the base plate. According to the scheme, a baffle at one end of a wire reel is clamped with the jaw bodies which can synchronously shrink and expand, and the problem is effectively prevented that in the prior art, when baffles at the two ends are clamped, a clamping jaw interferes with a wire reel placementtable top. By using the linkage type transmission structure, double linkages are adopted to be connected with the jaw bodies, the rigidity of the jaw bodies is effectively improved, the bearing capacity is improved, and a guarantee is provided for transverse placement of the wire reel.

The invention discloses an automatic wire reel feeding and discharging system and a feeding and discharging method thereof, and a wire winding production line. The feeding and discharging system involves a wire reel transportation trolley, a wire reel feeding and discharging trolley and a wire reel feeding and discharging station; the wire reel transportation trolley is provided with a platform for placing at least two wire reels, and can be moved to at least one processing device; the wire reel feeding and discharging trolley is provided with a structure for transferring the wire reels between the wire reel transportation trolley and the processing device and can be moved between the processing device and the wire reel feeding and discharging station; and the wire reel feeding and discharging station is fixed in position and is provided with a wire reel placement table and a transferring mechanism for transferring the wire reels between the wire reel transportation trolley and the wire reel placement table. According to the scheme, the dead weight of each trolley can be effectively reduced, so that the power requirement is reduced, the problem that the trolley feeding and discharging and the wire winding machine feeding and discharging can not be simultaneously carried out in an existing structure is effectively avoided, the time loss caused by the trolley stopping for feedingand discharging is saved, the processing beat is improved, and the processing efficiency is improved.

The invention discloses a high-refractive-index wear-resistant hardened coating composition and a preparation method of a hardened film thereof. The preparation method comprises the following steps: firstly, preparing nano zirconium oxide by utilizing a hydrothermal method and the like, and then connecting a hydrophobic group to the surface of zirconium oxide by virtue of a double modification method of olefine acid, olefine acid ester and a silane coupling agent so as to disperse the zirconium oxide into an organic solvent, and the organic-phase nano zirconium oxide particle dispersion with good dispersity is obtained. Zirconium oxide nanoparticles and light-cured resin are compounded to obtain the composite material with excellent performance of organic and inorganic materials, and the composite material is stable in property, high in hardness, high in wear resistance, good in water resistance and corrosion resistance and high in refractive index, and can be applied to the fields ofprotection of electronic products and electronic components or coating of furniture and artware and the like.

The invention relates to a silicon nitride gradient porous capillary core for a loop heat pipe and a preparation method of the silicon nitride gradient porous capillary core. The preparation method comprises the following steps: injecting at least two types of silicon nitride slurry having different proportions into a mold for gel solidification, drying, sintering and processing to obtain the silicon nitride gradient porous capillary core for the loop heat pipe, wherein the silicon nitride slurry is prepared from silicon nitride powder, a sintering aid, gel, a pore forming material and water;the content of the pore forming material in the silicon nitride slurry injected into the mold at first is lower than that of the pore forming material in the silicon nitride slurry injected into the mold later.

The invention provides a piezoresistive monolithic integrated tri-axial acceleration sensor and a manufacturing method thereof, relating to the field of a piezoresistive acceleration sensor, and overcoming the defects of low vector measurement precision, bad reliability, misaligned barycenter and large volume during measuring. The sensor is integrated by a chip, and the chip is divided into a fixed frame supporting zone, a circuit zone and a sense zone; and two first weight blocks are symmetrically arranged along the lengthways axial wire of the sense zone, two first middle beams are connected between the two first weight blocks, the outer surfaces of the two first weight blocks are respectively provided with two L-shaped sensitive beams, a first L-shaped sensitive beam to a forth L-shaped sensitive beam are symmetrically arranged relative to the transverse axial wire and the lengthways axial wire of the sense zone, a first piezoresistor to a eighth piezoresistor are arranged on heads of the sensitive beams, a ninth piezoresistor to a twelfth piezoresistor are arranged on the two first middle beams, and the upper surface of the chip is positioned on the same horizontal plane and is sequentially to be the beams, the weight blocks and the outer part of the sensitive zone from the deep to the shallow. With the principle of piezo-resistance effect, the invention integrates an accelerometer with a circuit on one chip, thereby improving the measuring precision and the reliability.

The invention provides construction and application of a shuttle vector between Escherichia coli and Lactobacilli. The invention relates to the technical field of gene engineering, and aims to construct a shuttle vector between Escherichia coli and Lactobacilli. The vector is named pZLT3, and comprises a nucleotide sequence disclosed as SEQ ID NO:3 in the sequence table. The vector utilizes the Lactobacillus plantarum subsp. plantarum Zhang-LL (the collection number is CGMCC No.6936) strain as the framework of the natural plasmid pZLT3, and comprises a nucleotide sequence disclosed as SEQ ID NO:1 in the sequence table. The shuttle vector suitable for Escherichia coli and Lactobacilli has the characteristic of stable inheritance in Escherichia coli and Lactobacilli. The lactobacillus natural plasmid pZLT3 comprises a coding gene and all regulatory genes expressed by lactobacillus bacteriocin protein, so the shuttle vector can be directly used for expressing lactobacillus bacteriocin protein in Lactobacilli.

The invention belongs to the technical field of material preparation, and particularly relates to a high-thermal-conductivity composite graphite cooling fin and a preparation method thereof. The high-thermal-conductivity composite graphite cooling fin adopts composite graphite layers as cooling units, the cooling fin is formed by the multiple composite graphite layers which are superimposed in thelongitudinal direction, and each composite graphite layer comprises a metal transition layer and a single-layer graphite film, wherein the metal transition layers are deposited on the surfaces of thesingle-layer graphite films, and the cooling fin is formed by the multiple composite graphite layers which are welded and laminated. According to the preparation method, the composite graphite cooling fin with the thickness being 0.08-1.0 mm can be prepared, and the usable range of a product is wide; and the interior of the prepared composite graphite cooling fin is free of adhesives, a metal andgraphite direct bonding mode is adopted, the prepared composite graphite cooling fin can keep the thermal-conduction advantage of a composite graphite sheet in the horizontal direction and can also improve the longitudinal thermal conductivity of the composite graphite sheet, a preparation process is simple, and the cost is low.

The invention relates to a silicon nitride gradient porous capillary core for a loop heat pipe and a preparation method of the silicon nitride gradient porous capillary core by combining a coating method. The silicon nitride gradient porous capillary core comprises a primary silicon nitride capillary core and at least one silicon nitride micropore layer coating the outer surface of the primary silicon nitride capillary core, wherein the primary silicon nitride capillary core has the porosity of 60 to 90 percent and the pore diameter of 10 to 200 microns, and the silicon nitride micropore layerhas the porosity of 40 to 60 percent and the pore diameter of 0.1 to 1 micron.

The invention relates to a stamping fuse structure and a manufacturing method thereof. The interior of a fuse is provided with a fuse line, the exterior of the fuse is covered with a protective layer and an insulating layer, and two ends of the insulating layer are provided with naked metal as electrode pins. The manufacturing method comprises the following steps: firstly, manufacturing the fuse line and electrodes on a first metal layer conductor substrate mainly using copper; secondly, adhering second metal layers consisting of silver, nickel, tin and the like and alloy thereof to the electrodes and the fuse line of the first metal layer; thirdly, manufacturing insulating layers with insulating and heat insulation effects at upside and underside of the middle fuse line of the metal substrate; and finally, cutting granules to obtain a finished product, wherein the insulating layers are made of high molecular materials such as silicon, epoxy and the like. Therefore, the method can carry out one-stop operation and quick production, and can effectively manufacture the stamping fuse with small volume, good function, convenience and practicability.

The invention relates to a magnetic resonance anti-counterfeiting ink. In the magnetic resonance anti-counterfeiting ink, the magnetic resonance anti-counterfeiting material is added into the ink, and the weight ratio of each raw material is: 50%-95% of the ink; 5%-50% of the magnetic resonance anti-counterfeiting material. Magnetic resonance anti-counterfeiting materials include: elements with non-zero nuclear spin or nuclear magnetic moment or elements with non-zero spin quantum number of the tested atomic nucleus, materials containing non-zero nuclear quadrupole moment elements, nuclear spin and nuclear magnetic moment are not Elements at zero, materials probed with electron paramagnetic resonance EPR or electron spin resonance ESR, materials probed with sequence magnetic resonance, materials probed with magnetic double resonance. The identification of the magnetic resonance anti-counterfeiting ink utilizes the magnetic resonance combination effect, reads the magnetic resonance digital signal at a specific position of the label containing the magnetic resonance anti-counterfeiting ink with a recognizer, detects the signal to identify the label material properties, thereby identifying the authenticity of the article, and can Identify information such as the authenticity, type and region of the item.

The invention relates to a drilling device for aircraft panel skin and belongs to the technical field of structural design. The device comprises a guide rail base body, a drill bushing base body and apositioning mechanism, wherein a guide rail and a hole forming groove are formed on the guide rail base body, the guide rail is arranged on an upper surface of the guide rail base body and arranged along the center line of the guide rail base body, the hole forming groove penetrates through the guide rail and a bottom face of the guide rail base body, axial directions of the two are consistent, and a bottom face of the guide rail base body is matched with the aircraft panel skin, the drill bushing base body is provided with a drill bushing and a drill bushing hole, the drill bushing is installed in the guide rail and can slide along the guide rail, the drill bushing hole penetrates through the axis of the drill bushing and is communicated with the hole forming groove, and a positioning mechanism is used for fixing the drill bushing base body to the guide rail base body. The device is advantaged in that 1, an application range is wide; 2, a repeated utilization rate is high; 3, interchangeability is good; 4, flexibility is high; and 5, drilling precision is improved, manufacturing cost of large special equipment can be saved, and development cost of newly-researched products is effectively reduced.

The invention discloses an end die for an extrusion die head of a plastic pipe. The end die comprises an end piece connected with an extrusion end of the extrusion die head, wherein the end piece comprises a connection platform used for connecting an extrusion channel of the extrusion die head, and connection surfaces used for connecting extrusion channel surfaces of the extrusion die head, the connection platform is coated with the connection surfaces, and the connection surfaces are smooth surfaces made of teflon coatings. The invention also provides a manufacturing method of the end die for the extrusion die head of the plastic pipe. The end die comprises the end piece. The manufacturing method of the end piece comprises the following steps: Step 1), the connection platform used for connecting the extrusion channel of the extrusion die head is provided; Step 2), teflon water-based paint containing polytetrafluoroethylene is provided; and Step 3), the connection platform is coated with the teflon water-based paint which is solidified to form the smooth connection surfaces for connecting the extrusion channel surfaces of the extrusion die head. The end die can improve the smoothness of a pipe wall of the extrusion pipe, and the method is simple to operate and facilitates production.

The invention relates to the field of cutters for metal cutting machining, in particular to a multifunctional composite cutter. The multifunctional composite cutter comprises a knife handle (1), and the multifunctional composite cutter is characterized in that the cutter further comprises a cutting disc (2), tight locking sleeves (3), a drill bit (4) and a fastening nut (5), wherein the rear end face of the cutting disc (2) is fixed on the front end face of the knife handle (1), at least three cutting seats (21) are arranged at the outer edge of the front end face of the cutting disc (2), andeach cutting seat is fixedly provided with a cutting blade (22); the tight locking sleeves (3) are vertically fixed in the middle of the front end face of the cutting disc (2), and the tight locking sleeves (3) are distributed evenly around the central axis of the cutting disc (2), and the outer side faces of the front parts of the tight locking sleeves (3) are tapped with external threads; and the rear part of the drill bit (4) is inserted among the tight locking sleeves (3), and screw the fastening nut (5) to the outer threads of the tight locking sleeves (3). According to the cutter, the structure is small, use is convenient, combination degree is high, and application range is wide.

The invention relates to the technical field of genetic engineering and aims to construct a shuttle vector between escherichia coli and haemophilus parasuis. The shuttle vector is named as pSHK4 and comprises a nucleotide sequence expressed by a sequence table SEQ ID NO:1, wherein a coding area of the pSHK4 is located at the sequence corresponding to 927-1742 bit sequence of the nucleotide sequence and 271 amino acids are coded. The shuttle vector provided by the invention has the advantages that a duplicated starting locus of natural plasmids in a bacillus separating strain of the haemophilus parasuis is utilized to construct the shuttle vector suitable for the haemophilus parasuis for the first time, the shuttle vector has the characteristics of stable hereditary in pathogenic bacteria and can be used for performing genetic operation on the haemophilus parasuis, and the shuttle vector is a basic tool for researching a toxic factor of the haemophilus parasuis and has a significance in revealing a pathogenic molecular pathopoiesia mechanism.

The invention discloses a multifunctional intelligent correcting pen. The pen comprises a pen cap and a pen container, the pen cap and the pen container are detachably connected, and a micro-touch switch is arranged at the position, used for allowing the pen to be held, of the lower end of the pen container; a pen core, a pen core seat, a hinge mechanism, a movable nut, a micro motor and a circuitboard are sequentially arranged inside the pen container; and a power switch is arranged at the tail end of the pen container, and a function switching key is arranged on the outer side of the pen container. According to the multifunctional intelligent correcting pen, due to the fact that the movable nut is arranged to cooperate with the hinge mechanism, the hinge mechanism can be driven to movefor a relatively large distance by a relatively short distance of the movable nut, and a pen core can be controlled to extend out of a pen holder for a larger length, so that replacement of differentpen cores is achieved, and the purpose of multiple functions is achieved; and the shortsightedness of a user can be prevented and the eyesight of the user can be protected, the sitting posture can becorrected, the pen holding posture can be corrected, the humpback can be prevented, and the brightness of the surrounding light during writing can be inducted.

The invention aims at providing a horizontal ballast water filtering device with a pleated filter screen. The horizontal ballast water filtering device with the pleated filter screen comprises a barrel, a front cover plate, a back cover plate, a filter core, a hollow sewage discharge shaft and a sewage discharge chamber, wherein the front cover plate is fixed to the front end part of the barrel; the back cover plate is fixed to the back end part of the barrel; filter core clamping ports are formed in the front end and the back end of the inner part of the barrel respectively; the filter core is mounted between the filter core clamping ports in the front end and the back end; a water inlet is formed in the front cover plate; a water outlet is formed in the barrel; one part of the hollow sewage discharge shaft stretches from the back cover plate into the barrel, and the other part of the hollow sewage discharge shaft is positioned outside the back cover plate and is fixed by a rotating shaft mounting port on the back cover plate; the sewage discharge chamber is formed in the end part of the hollow sewage discharge shaft; a sewage discharge pipe is mounted below the sewage discharge chamber; a sewage suction pipe stretches out of the hollow sewage discharge shaft; a sewage suction head is mounted on the end part of the sewage suction pipe. The horizontal ballast water filtering device with the pleated filter screen has a small floor area, can effectively solve the blocking problem caused by filtration, has a good effect of filtering suspended plants and animals in ballast water, can achieve simultaneous operation of filtration and backflushing and shortens the operating cycle.