39results about How to "High scientific value" patented technology

The invention belongs to technical field of medical instruments and particularly relates to an individual non-column-shaped bionic medicine eluting coronary stent manufactured with a degradable material. The stent is a degradable stent manufactured with the degradable biological material. The stent is composed of a plurality of closed wavy ring-shaped units which are fixedly connected to form a bridging reticular structure. The stent is divided into a proximal end and a distal end according to the implanting direction. When the stent is in an expanding state, the outer diameter of the proximal end of the stent is different from the outer diameter of the distal end of the stent. Development of the bionic degradable coronary stent is oriented to multiple patients with the coronary heart disease and conforms to the trend of individualized treatment, multiple defects caused by mismatching between the shape of the stent and the blood vessel are overcome to the greatest extent, the influence on the coronary artery due to long-term existence of a metal stent is avoided, and the stent has higher scientific, economic and social value.

The invention discloses a side-mulching-film rainwater-collecting drought-resistant high-yield cultivation technique for coix lacryma. According to the technique disclosed by the invention, a wide-narrow-row side-mulching-film rainwater-collecting drought-resistant high-yield cultivation technique for the coix lacryma is researched, the purposes of saving production costs and improving per unit yield are achieved, and the method has higher scientific value and broad application prospects in promoting cost saving and synergy of raw material production of the coix lacryma, improving planting benefits and scale and level of a coix lacryma industry, and enhancing development potential, and aims to solve the problems that in a main producing area of the coix lacryma, drought is severe in earlyspring, the area has no irrigation conditions, an emergence rate of the coix lacryma is low, manpower and material resources required for planting are more, labor force is lacked, labor force price isincreased, management is extensive, production costs are high, and per unit yield of the coix lacryma is low.

The invention belongs to the technical field of genetics and biology, in particular to an ISSR-PCR molecular mark system for Carpinus oblongifolia (Hu) Hu et W. C. Cheng. An optimized ISSR-PCR reaction system is provided and configured in a manner that: 25 [mu]L of the reaction system contains 1*PCR buffer, 2.5 mM of Mg<2+>, 0.25 mM of dNTPs, 0.6 [mu] M of a primer, 50 ng of a DNA template, and 1.2 U of Taq enzyme. The amplification procedure is as follows: predenaturation at 95 DEG C for 5 min, denaturation at 95 DEG C for 30 sec, annealing at 56 DEG C for 45 sec, extension at 72 DEG C for 1min, extension at 72 DEG C for 7 min after 40 cycles, and agarose gel electrophoresis. The ISSR-PCR system has good stability, high clarity and abundant polymorphism.

The invention relates to a large-sized earth pillar series connection simulator for soil solute transport, which belongs to the field of hydraulic engineering and has an IPC international patent classification code of E02B 1 / 100, E02D 33 / 00. The large-sized earth pillar series connection simulator comprises a water supplying system, simulated earth pillars, a sampling system, a series connection device, a draining system, and a data acquiring and control device, wherein the water supplying system comprises a water supplying peristaltic pump and a water supplying tube; the simulated earth pillars comprise a plurality of large-sized earth pillars; the sampling system comprises a water sampling port, a sampling tube, a sampling pump and a sampling container; the series connection device comprises series connection pressurizing water supplying equipment and a water supply tube which is connected with the large-sized earth pillars in series, and the series connection pressurizing water supplying equipment is preferably the peristaltic pump; the draining system comprises an electromagnetic valve and a draining tube; and the data acquiring and control device comprises a cable, a soil water sensor, a data acquisition controller and a computer. The simulator is suitable for the simulated research on the transportation of the solute in the large-sized soil profile and the simulator has the advantages of higher simulation precision, lesser investment and easier construction.

The invention provides a modification method for improving the shape memory performance of emulsified asphalt used in the fog seal layer, which belongs to the technical field of emulsified asphalt modification, and solves the problem that the current fog seal layer is prone to aging and cracking, lacks shape memory function, cannot realize self-healing and road surface performance Problems with short duration. The present invention firstly selects the asphalt sample, emulsifier and suitable shape memory polymer as the modifier, and makes the modifier into a latex; The modified emulsified asphalt was prepared by side emulsification method; secondly, the basic properties and shape memory performance of the modified emulsified asphalt were tested, and the formula of each component of the modified emulsified asphalt was optimized accordingly; finally, infrared spectroscopy and The scanning electron microscope analyzes the modified emulsified asphalt, and further optimizes the compounding scheme of the modified emulsified asphalt, so that the modified emulsified asphalt has better shape memory performance, enhances the self-healing performance of the fog seal material, and reduces the frequency of asphalt pavement maintenance.

The invention belongs to technical field of medical instruments and particularly relates to an individual non-column-shaped bionic medicine eluting coronary stent manufactured with a degradable material. The stent is a degradable stent manufactured with the degradable biological material. The stent is composed of a plurality of closed wavy ring-shaped units which are fixedly connected to form a bridging reticular structure. The stent is divided into a proximal end and a distal end according to the implanting direction. When the stent is in an expanding state, the outer diameter of the proximal end of the stent is different from the outer diameter of the distal end of the stent. Development of the bionic degradable coronary stent is oriented to multiple patients with the coronary heart disease and conforms to the trend of individualized treatment, multiple defects caused by mismatching between the shape of the stent and the blood vessel are overcome to the greatest extent, the influence on the coronary artery due to long-term existence of a metal stent is avoided, and the stent has higher scientific, economic and social value.

The invention provides a method for preparing a sandy mist sealant material with a self-healing function, which solves the problems of insufficient anti-skid performance, easy aging and cracking, lack of repeated self-healing function, poor durability, and inability to rely on natural environment temperature field cycles for current mist sealant materials. Change achieves self-healing problems. The present invention first selects machine-made sand as the fine aggregate of the sand-containing mist seal layer and carries out reasonable gradation design; then, selects shape memory fibers with suitable phase transition temperature for stretching training, endows the fibers with shape memory properties; selects phase transition Thermoplastic granules with suitable temperature are used as additives for the sand mist seal layer, so that they can melt when reaching the appropriate temperature and then seal the cracks; then, weigh an appropriate amount of emulsified asphalt, shape memory fiber, thermoplastic granules, fine aggregate and water to mix evenly to obtain Sand mist sealant material; finally, by testing the mixing uniformity, the mix ratio design of each component of the sand mist sealant is further optimized, so that the mist sealant material has good self-healing performance and anti-skid performance.

The invention discloses a pre-treatment apparatus for test of a nitrate nitrogen isotope in water body. The pre-treatment apparatus comprises at least one pre-treatment pipeline. The pre-treatment pipeline comprises a water-supply pump, a water inlet and storage tank, a peristaltic pump, a resin exchange adsorption column and a water drainage and storage barrel which are communicated with one another successively, wherein the water inlet and storage tank is provided with an on-line test probe for nitrate nitrogen in inlet water; the water drainage and storage barrel is provided with an on-line test probe for nitrate nitrogen in drainage water; and the on-line test probe for nitrate nitrogen in the inlet water and the on-line test probe for nitrate nitrogen in the drainage water are connected with a data acquisition and control system. The pre-treatment apparatus provided by the invention is suitable for pretreatment (adsorption process) for the test of the nitrate nitrogen isotope in various water bodies. Compared with a conventional indoor pretreatment method, a pretreatment method employing the pre-treatment apparatus provided by the invention can overcome the problems of low treatment efficiency and complex applications in a normal pretreatment method for the test of the nitrate nitrogen isotope in the water body, realizes intellectualized operations, and greatly increases pretreatment efficiency.

The invention provides a method for preparing a series of fully organic high-dielectric copolymer materials with side chains containing polyaniline chain segments, which is simple and has strong operability. A method for radical polymerization is used to solve the problem of separation existing between fillers and polymer substances and caused by a simple physical blending method, thereby improving the dielectric constants of the materials. Toluene is used as a reactive solvent, polyaniline mixed with phenylethylene and phenylethylene sulfoacid is used as a monomer for radical polymerization reaction, and then a series of copolymers containing different polyaniline mass fractions can be prepared through regulating the mass ratio of the polymerized monomer, thereby obtaining a series of copolymers with different dielectric constants. The obtained copolymers are configured into tetrahydrofuran solutions with the mass fractions of 10%-15%, and then copolymer films can be prepared by using a casting film-formation method. The copolymers obtained by the method have high dielectric constants and small density and is beneficial to the development of high-dielectric materials to small-size light materials.

The intelligent cerebrospinal fluid replacing instrument consists of two parts, including a disposable replacing cylinder and a driving and controlling device capable of being reused. Inside the replacing cylinder with replacing port for the drainage pipe to be connected on and sucker, artificial cerebrospinal fluid is held. The driving and controlling device includes mainly a mechanical driving unit and an automatic control unit. The present invention has a program driven pushing and sucking pump with constant speed and constant displacement, and parameters capable of being set based on disease condition, so that it has intelligently controlled speed, time and pushing and sucking amount of the replaced cerebrospinal fluid and is scientific, accurate, safe and efficient.

The invention relates to a method for customizing software in a self-service manner. The method is characterized in that a software distributor places selling software on a browse page; after browsing, users can select required software; a software customizing scheme is submitted to the software distributor for analysis; a complete software package is formed, and information is fed back to the users through the page; and the users obtain the customized software according to the feedback information. The method can, with respect to the conditions of different enterprises, make most suitable programs, and can integrate the newest management ideas or the most scientific management mode of a manager to a mathematic model of the software, so that the scientific value of the software is greatly improved, and great economic benefit is brought to the enterprises; and meanwhile, the self-service software customizing can program function modules required by the enterprise and delete the functions of no actual use values according to the actual conditions of the enterprise, thereby reducing the development period to the largest degree, saving development cost, and improving economic benefits.

The invention provides a method for evaluating the shape memory performance of a sand mist seal layer material, which belongs to the technical field of asphalt pavement materials, and solves the problem that the shape memory performance evaluation method of the current shape memory performance evaluation method is difficult to measure the shape fixation rate and recovery of the slurry material such as a sand mist seal layer. Rate index, the lack of methods to evaluate the shape memory performance of sand-mist sealant materials. In the present invention, the shape-memory short fibers and thermoplastic particles whose phase transition temperature matches the highest temperature field on the road surface are firstly selected, and the shape-memory function of the short fibers is given to the short fibers through pre-deformation; then, sand mist-containing sealing materials with different content of shape-memory fibers are prepared The test piece was cured; secondly, the triaxial dynamic creep test was carried out to obtain the deformation amount of different cycles, and the shape memory index was defined as the evaluation index; finally, the optimal dosage of shape memory short fiber was determined by comparing the shape memory index . Improve the mix ratio design of the sand mist sealant material to meet the self-healing performance requirements of the sand mist sealant material on the asphalt pavement.

An in-space-capsule 3D printing device for a microgravity environment comprises a printer, wherein a function composite closed case is arranged outside the printer, an air outlet of the printer in the function composite closed case is connected with an air inlet of an atmosphere and temperature control device, an air outlet of the atmosphere and temperature control device is connected with an air inlet of the printer in the function composite closed case, the function composite closed case of the printer is connected with a vibration reduction platform, and a printing platform is connected onto the vibration reduction platform; a heat-insulating layer capable of keeping the temperature field in the case stable is contained in the inner surface of the function composite closed case, a noise reduction layer for shielding noises produced during printing is arranged outside the heat-insulting layer, and an electromagnetic shielding layer for preventing mutual electromagnetic interference between the printer and the outside as well as a protection layer for ensuring the printer strength are arranged outside the noise reduction layer. The device is adapted to the space microgravity environment and ensured to be matched with a space navigation platform, and space manufacturing is realized.

The invention discloses an indoor three-dimensional grouting model test servo control system and a test method. The system comprises two parts of a three-dimensional grouting model test device and a constant-pressure grouting-water supply combined servo control device. The three-dimensional grouting model test device comprises three counterforce boards. A confining pressure counterforce cavity is placed between the first counterforce board and the second counterforce board. An axial pressure servo loading module for applying the axial loading force to the confining pressure counterforce cavity is placed between the second counterforce board and the third counterforce board. A pore water pressure loading module is arranged at the bottom of the confining pressure counterforce cavity. A grouted rock mass loading module and a confining pressure servo loading module applying confining pressure to the confining pressure counterforce cavity are arranged in the confining pressure counterforce cavity. The constant-pressure grouting-water supply combined servo control device comprises a constant-pressure double-liquid grouting pneumatic servo control module and a constant-pressure water supply pneumatic servo control module. The constant-pressure double-liquid grouting pneumatic servo control module is communicated with the confining pressure counterforce cavity. The constant-pressure water supply pneumatic servo control module is connected with the pore water pressure loading module.

The invention provides a design method of an efficient asphalt flame retardant multi-element compounding scheme, aiming at solving the problems of a current asphalt flame retardant which is poor in flame retardant efficiency and cannot implement complete thermal decomposition on asphalt to achieve efficient flame retardation. The method comprises the steps of firstly, implementing a thermegravimetry experiment depending on various components of asphalt to understand graded distribution characteristics of thermal decomposition performances of various components of the asphalt; and respectively optimizing flame retardants matched to thermal decomposition temperature intervals of various components of the asphalt and additive amounts of the flame retardants, so as to realize flame retardation on the level of various components; secondly, depending on contents of various components in the asphalt, primarily designing a flame retardant compounding scheme, investigating flame retardant efficiency of the compound multi-element flame retardant on the asphalt as well as a synergistic effect among various flame retardants, thus optimizing the flame retardant compounding scheme primarily; and finally, evaluating influence of the compound flame retardant on pavement performances of the asphalt and mixture thereof, so as to further optimize the flame retardant compounding scheme and perfecting design of the flame retardant multi-element compounding scheme. The method provided by the invention can realize efficient flame retardation in the full thermal decomposition process of the asphalt, so as to enhance fire safety of an asphalt pavement.

The invention discloses a water-free soil matrix potential profile measurement device which comprises not less than one water-free soil matrix potential sensor unit, a conical drill bit and an impact handle, wherein the conical drill bit, the not less than one water-free soil matrix potential sensor unit and the impact handle are sequentially connected in series by virtue of connecting screw rods so as to form a cylindrical whole. The water-free soil matrix potential profile measurement device disclosed by the invention is suitable for long-term soil matrix potential research; compared with previous products, the device has the advantages that installation and application programs can be greatly simplified, and the equipment level in the field of the soil matrix potential research in China is effectively improved. The adverse factors such as tedious operations, large edge effect and low degree of automation in a conventional soil matrix potential measuring instrument are effectively overcome. With the adoption of the water-free soil matrix potential profile measurement device, the measurement of low edge effect and profile integration can be very well realized, the soil matrix potential can be automatically acquired, the working efficiency is greatly improved, and the application of the device has very high scientific values.

The present invention relates to the technical field of inspection and measurement. Disclosed is an enzymology detection method for detecting concentration of citrulline and asymmetric dimethylarginine (ADMA) in a reaction system by using an ATP detection method. The basic principle of the reaction is mainly as follows: ADMA is hydrolyzed by using dimethylarginine dimethylaminohydrolase to obtain citrulline; when ADP and Mg2+ exist, the citrulline is coupling-catalyzed by using ornithine carbamoyltransferase and carbamoyl phosphate kinase to finally obtain ornithine, carbon dioxide, ammonia gas, and ATP, wherein the released ATP can be detected by using a reagent. The present invention has the advantages of flexible and quick reaction, high accuracy, and low cost; ADMA or citrulline with the concentration of 0.1μmol / L at lowest can be detected, and the detection result approaches the concentration of ADMA in the normal serum and is far less than the concentration of citrulline in the normal serum, thereby providing a new applicable method for clinical ADMA detection.

The present invention is a semi-flexible pavement mesomechanics analysis method under the coupling effect of vehicle-temperature load, which belongs to the technical field of pavement material research, and solves the problem of single load type, one-sided calculation results and low accuracy in the current semi-flexible pavement mesomechanics analysis. Bad question. The present invention first obtains the material parameters of the semi-flexible pavement at different temperatures through indoor tests, and obtains the temperature correlation function of each parameter through fitting; secondly, establishes a two-dimensional model of the semi-flexible pavement, and assigns thermal parameters to each component material in the model; then , use the FISH language to write programs, update the mechanical parameters of each component material obtained by the fitting function in real time at each step in the calculation process with the change of material temperature; finally, simulate the vehicle load loading, and monitor the semi-flexible pavement under the coupled action of vehicle-temperature load mesomechanical response. The invention can also play a role in the mesomechanics research of multi-field coupling action of other road surface types, and provides a basis for understanding the strength formation mechanism.