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

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 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.

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 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.