18results about How to "Less weight gain" patented technology

The invention relates to the technical field of cable manufacturing, in particular to a superconducting coaxial cable for a quantum computer and a manufacturing method thereof, and the method comprises the steps: coating an inner conductor with an inner insulating layer to form an inner conductor layer, and electroplating a niobium compound coating on the inner wall of a stainless steel tube to form an outer conductor; forming a cable conductive layer; acquiring an advancing speed change curve of a single inner conductor layer; determining a first velocity mutation type and a second velocity mutation type; determining the vertical stirring speed of the electroplating stirring rod at the position of the outer conductor; electroplating the inner wall of the stainless steel pipe; according to the friction degree of the inner conductor layer and the outer conductor, determining an inner conductor motion adjusting mode, including adjusting the moving speed of the inner conductor layer in the outer conductor, or determining the initial rotating speed of the inner conductor layer when the outer conductor starts to pull a wire; and performing wire drawing on the sleeved outer conductor to form the cable. According to the invention, the stability of cable assembly is improved.

The invention belongs to the technical field of application of miR-3032-z in preparation of a product for inhibiting expression of a brown planthopper CYP15A1 gene, and particularly relates to the technical field of pest control. The invention provides an application of miR-3032-z or a reagent for overexpressing miR-3032-z in preparation of a product for inhibiting the expression of a CYP15A1 gene of brown planthopper. The products include medicaments or kits. The miR-3032-z is combined with a target gene CYP15A13 'UTR region in a targeted manner to regulate the expression of the gene, the overexpression of the miR-3032-z can inhibit the expression of a cytochrome P450 family gene CYP15A1, the honeydew secretion amount and insect weight gain of biological type Y brown planthoppers on insect-resistant rice YHY15 can be remarkably reduced, the feeding behavior of the biological type Y brown planthoppers can be remarkably inhibited, and the sensitivity of harmful type brown planthoppers to the resistant rice YHY15 is recovered.

The invention discloses a harmless treatment method for rare earth smelting waste residues, and relates to the technical field of hazardous waste treatment and disposal. The method comprises the following steps: firstly, adding an organic barium salt into the rare earth smelting waste residue, stirring to react completely, then adding a carbonate mineralizing bacteria culture solution to carry out induced mineralization reaction, after the reaction is completed, pressurizing and compacting the rare earth smelting waste residue, carrying out carbonization maintenance, and drying after the maintenance is completed, so that the harmless treatment of the rare earth smelting waste residue is realized. The method for harmlessly treating the rare earth smelting waste residues has the advantages that the method is green and environment-friendly, the radioactivity of the rare earth smelting waste residues can be reduced in situ, the cementing effect on the rare earth smelting waste residues is good, and subsequent secondary utilization is not affected.

The invention provides a method for cutting and positioning a brazing filler metal foil strip by adopting a vacuum brazing process, which comprises the following steps of: 1, performing image recognition on a core body of a dot matrix sandwich structure to generate a two-dimensional image of the surface profile of the core body, including image acquisition, rapid image processing and profile recognition; 2, core contour parameters generated in the step 1 are guided into a control system, precise and lossless cutting is conducted on the brazing filler metal foil belt through the ultrafast laser machining technology, and the situation that the microstructure of the brazing filler metal belt is affected by excessive heat input is avoided; step 3, paving a plurality of layers of amorphous brazing filler metal strips prepared in the step 2 according to process requirements to form a complex variable-thickness brazing filler metal foil strip; the complex variable-thickness brazing filler metal foil belt is connected with the dot matrix sandwich structure panel through the micro-resistance spot welding technology, and precise positioning of the brazing filler metal foil belt is achieved. By precisely cutting and positioning the brazing filler metal foil strip, the weight increment of the brazing filler metal is reduced while the welding quality is guaranteed, and the lightweight requirement is met.

The invention discloses application of a rice brown planthopper resistant gene OsCYT2 in rice brown planthopper resistance, and relates to the technical field of brown planthopper resistant transgenic rice. According to the invention, through agrobacterium-mediated genetic transformation, the OsCYT2 gene is transferred into an insect-susceptible rice variety Nipponbare, and the resistance of a plant over-expressed with the OsCYT2 gene to brown planthopper is enhanced. After the brown planthopper eats the transgenic plant, the survival rate of the brown planthopper is reduced, the weight gain of the brown planthopper is reduced, and the amount of secreted honeydew is reduced. The new insect-resistant function of the gene OsCYT2 found by the invention has reference significance for researching gene molecular functions and breeding.

The invention discloses a thermoplastic engineering plastic and a preparation method thereof, and the thermoplastic engineering plastic comprises the following components by weight: 83-93% of ABS resin, 3-10% of flake alumina and 3-4% of a processing aid; wherein the surface of the flaky aluminum oxide is connected with a lipophilic group. According to the invention, the surface-modified flaky aluminum oxide is adopted as a functional filler and is compounded with the ABS resin to prepare the ABS thermoplastic engineering plastic, and the flaky aluminum oxide can realize single-sheet stripping after being subjected to surface treatment, so that the characteristics of portability, impact resistance, weather resistance and great improvement of dimensional stability can be achieved only by using 3-10% of additive amount; meanwhile, the production cost of the ABS plastic and the increase amplitude of the overall weight are reduced due to the low filler addition amount, and no obvious adverse effect is generated on the mechanical property of the plastic; the preparation method does not need to change the forming processing technology of the existing ABS plastic, the production cost is low, and the product can be recycled.

The invention relates to a heat exchanger of a liquid rocket engine, in particular to a wall surface integrated type 3D printing efficient heat exchange barrel with a water-drop-like section flow channel, and aims to solve the problems that an independent external heat exchanger and a pipeline thereof in an existing liquid rocket engine are complex, so that the requirement for compactness of an engine system is difficult to meet; and the complex pipeline increases the flow resistance of the liquid medium and affects the heating efficiency of the heat exchanger and the overall performance of the engine system. According to the wall surface integrated type 3D printing efficient heat exchange barrel with the water-drop-shaped section flow channel, a heat exchanger is integrated into the wall surface of a high-temperature gas pipeline, a pressurizing medium in a storage box is introduced into a second flow channel for heating, and then the pressurizing medium is introduced into the storage box to complete pressurizing; and compared with an independent external heat exchange scheme, the occupied volume and mass are greatly reduced, the thrust-mass ratio of the engine is increased, and the saved weight can be used for increasing the effective load.

The utility model discloses a motorcycle engine crankcase belongs to motorcycle engine technical field, and one kind of motorcycle engine crankcase, including crankcase main part, the crankcase main part upper end surface center one side place is equipped with crankshaft accommodating cavity, the crankcase main part upper end surface center leans to the side and is equipped with the variable speed gear installation cavity, the inboard wall of crankshaft accommodating cavity is equipped with the protection structure, the crankcase main part lower end surface center place is equipped with the reinforcing structure, in addition, the utility model discloses, through the combination design of protective layer, T type sliding block and sliding slot, through the radial limit and prevent the deviation and fall of protective layer because of crankshaft high -frequency vibration, also keep the axial trace sliding space to adapt the thermal expansion and contraction when the engine works, solved the problem that rigid protection structure is easy to produce stress cracking because of temperature change, simultaneously, the direct contact of protective layer and crankshaft part realizes wear and tear isolation, and cooperates slidable type assembly structure, and the durability and adaptability of protection have been greatly improved.

The application discloses an organic silicon emulsion, a preparation method and a method for dehydrating and shaping water-saturated wooden cultural relics, and relates to the field of water-saturated wooden cultural relic protection research.The preparation method of the organic silicon emulsion comprises the following steps: taking 2-5 parts of organic silicon monomer, 1-3 parts of a surfactant, 0.3-1 parts of a co-surfactant and 3-6 parts of pure water for standby; the surfactant and the co-surfactant are added into the organic silicon monomer, and uniform stirring or oscillation is continuously carried out to form a transparent organic silicon dispersion liquid; and the organic silicon dispersion liquid is poured into the pure water, and sufficient stirring or oscillation is carried out to form a stable organic silicon emulsion.The organic silicon emulsion material prepared by the application has good dehydrating and shaping performance, and can significantly enhance the dimensional stability, mechanical properties, microbial resistance and environmental stability of the cultural relics, and is environment-friendly and efficient.

The invention belongs to the technical field of bioactive peptides, and particularly relates to a cyperus esculentus-derived DPP-IV inhibitory peptide as well as a preparation method and application thereof. The DPP-IV inhibitory peptide has good in-vivo hypoglycemic activity, through screening and identification, the core peptide fragment comprises YLFPGFG, FGHPEW, VLPPPW and the like, the three oligopeptides have high DPP-IV inhibitory activity, the IC50 values of the three oligopeptides are 0.5047 mM, 1.199 mM and 1.596 mM respectively, all the oligopeptides are competitive inhibition, and the DPP-IV inhibitory peptide can be used as a DPP-IV natural inhibitory peptide with low side effects and good curative effects and has good application prospects. The method has important theoretical and practical significance for early prevention of diabetes mellitus.

The utility model discloses a low noise automobile tire belongs to automobile tire technical field, including tire body, longitudinal pattern groove, drainage pattern groove and first sound absorption pit, tire body tread is equipped with several longitudinal pattern grooves, several drainage pattern grooves are equipped in the tire body's shoulder position, and the first sound absorption pit is equipped on the inner wall of tire body, and several first sound absorption pits are evenly distributed along the circumferential inner wall of tire body. The prior art has solved the problem that the optimization effect is not obvious, the tire weight is increased and the production cost is improved due to the relatively limited space of pattern optimization and form adjustment and the addition of mute material. The utility model solves the three big problems of the noise reduction bottleneck, weight increase and cost increase of the traditional technology through structural innovation, and provides a technical solution with performance and economy for the electric automobile tire.

The invention discloses a preparation method of mesalazine enteric sustained-release microparticles, mesalazine spherical microparticles with small particle size and high drug loading capacity prepared by a W / O / W multiple emulsion method are used as drug-containing pill cores, the particle size of the microparticles is 50-150 mu m, the roundness is high, the mechanical strength is high, and the drug loading capacity is high. Due to the high mechanical strength, the shape of the particles is still kept complete under the large atomization pressure in the fluidization coating process, due to the high roundness, coating liquid can be sprayed on the surfaces of the particles more evenly, the same slow-release effect is achieved, and the weight increment of the coating is smaller. The invention further discloses the mesalazine enteric-coated sustained-release particles prepared by the preparation method, the particle size is 50-200 microns, the mesalazine enteric-coated sustained-release particles are free of gravel feeling during oral administration, the problems of enteric-coated sustained release, difficulty in swallowing and the like can be effectively solved, and the medication compliance of patients is greatly improved. The mesalazine enteric-coated sustained-release particles prepared by the invention are used for preparing pharmaceutical preparations such as orally disintegrating tablets, granules, dry suspensions and the like.

The present invention relates to a metoprolol succinate sustained-release capsule and a preparation method thereof. The metoprolol succinate sustained-release capsule is composed of a capsule shell and a metoprolol succinate sustained-release micro-pill, wherein the sustained-release micro-pill comprises a metoprolol succinate drug-containing pill core and a sustained-release coating layer coating the metoprolol succinate drug-containing pill core, wherein the drug-containing pill core comprises metoprolol succinate, microcrystalline cellulose and polyethylene glycol-polylysine block copolymer. The present invention also provides a preparation method of the metoprolol succinate sustained-release capsule.

This invention discloses a golf ball for enhancing the reflection performance of 77GHz millimeter-wave radar, comprising: a golf ball body; a conductive coating disposed on the surface of the golf ball body; the conductive coating is a conductive material layer formed by liquid-phase impregnation and drying, wherein the conductive material is selected from at least one of silver nanoparticles, graphene, or carbon-based conductive materials; the conductive coating is uniformly adhered to the surface of the golf ball and the pit structure on the surface, covering the pit structure, and the coating does not fill the pits; and the total weight gain of the golf ball does not exceed 0.5g. The preparation method includes the following steps: Step 1: Diluting the conductive coating with a diluent to a solid content of 1%–5% to obtain an impregnation solution; Step 2: Completely immersing the golf ball in the impregnation solution; Step 3: Removing excess liquid by centrifugation or spin-drying; Step 4: Performing a low-temperature drying treatment on the spin-dried golf ball.

The utility model discloses a large wind turbine generator blade with a hollow pultrusion plate main beam structure, which comprises a blade body, and a pressure surface main beam and a suction surface main beam of the blade body adopt the hollow pultrusion plate main beam structure or one of the pressure surface main beam and the suction surface main beam adopts the hollow pultrusion plate main beam structure. The main beam of the hollow structure is adopted, the thickness of the main beam is increased, flange buckling is avoided, meanwhile, the weight increment of the main beam is reduced, the utilization rate of main beam materials is improved, and therefore the blade cost is effectively controlled.

The present application provides 3,5-substituted imidazothiadiazole heterocyclic derivatives, and a preparation method and application thereof. Specifically, a series of 3,5-substituted imidazothiadiazole heterocyclic derivatives are screened, which can inhibit eIF4E phosphorylation, reduce p-eIF4E generation, reduce body weight gain, reduce fat accumulation, reduce inflammation and the like, and are used for preventing and / or treating metabolic diseases, thrombotic diseases, sepsis acute kidney injury, MASLD (metabolic fatty liver disease), MASH (metabolic fatty hepatitis) and the like related to eIF4E phosphorylation level disorder. The metabolic diseases related to eIF4E phosphorylation level disorder are selected from type 1 diabetes, type 2 diabetes, hyperlipidemia, obesity, fatty liver disease, and complications and conditions related thereto.

This invention provides an ultra-thin metal composite panel, comprising a metal plate body, with hot-dip galvanized steel plates disposed on the outer side of the metal plate body. Toughness composite units are located between the hot-dip galvanized steel plates to enhance the toughness of the metal plate body. A ceramic coating is disposed on the outer side of each hot-dip galvanized steel plate. The ultra-thin metal composite panel of this invention effectively ensures the overall strength of the metal plate body while increasing its bending strength and impact resistance, thereby enhancing its impact resistance and effectively reducing the inconvenience caused to users by impact-induced damage.

The application discloses a method for recovering a rocket by splashing and falling on the sea, and the rocket comprises a first-stage rocket, an inter-stage section and a separation connecting mechanism for separably connecting the first-stage rocket and the inter-stage section; during splashing and falling of the rocket, the recovery method realizes quick unlocking and throwing away of the inter-stage section from the first-stage rocket through the separation connecting mechanism, so that the inter-stage section is prevented from participating in the second-time water-impact process, water dynamic force arms generated by overall tilting are reduced, buffer time is increased, buffer load is reduced, and the inter-stage section and the first-stage rocket are protected. The recovery method can reduce the second-time impact during the splashing and falling process and avoid introducing complex mechanisms for protection, so as to reduce the influence of the second-time water-impact on the rocket body.