45results about How to "Promote Applied Research" patented technology

A core-shell structure poly-2,3-dimethylaniline / polyaniline conductive composite material and its preparation method, the structure of the composite material is poly-2,3-dimethylaniline as the core and polyaniline as the core of the shell It has a shell structure, and its preparation method is to firstly prepare poly-2,3-dimethylaniline by solution polymerization, and obtain its powder after suction filtration, washing, drying and grinding. Then use powdered poly-2,3-dimethylaniline as the core, and polymerize on its surface by solution polymerization or emulsion polymerization. After the product is filtered, washed, dried, and ground, the core-shell structure poly-2 , 3-Dimethylaniline / polyaniline conductive composites. The core-shell structure poly 2,3-dimethylaniline / polyaniline conductive composite material provided by the present invention significantly improves the conductivity of poly 2.3-dimethylaniline, which is beneficial to its application in sensors, conductive components, electrode active materials, etc. field applications.

The invention discloses a culturing method for maintaining a self-renewal state of human embryonic stem cells. The method comprises passage and culturing of the human embryonic stem cells under the condition of using the culturing method and observation and detection of the self-renewal state of the human embryonic stem cells cultured under the condition of using the culturing method. According tothe method, the problems of easily differentiated state, complicated passage operation, high culturing condition cost and inconvenient subsequent research on mechanisms of the human embryonic stem cells under the current traditional culturing condition are solved by adding an inhibitor of a Wnt / beta-catenin signal channel; the method has the advantages of being stable in effect, economic and high-efficient, simple to operate, convenient to research and the like, clues for improving and establishing culturing conditions for multipotential stem cells of other kinds and species are provided, and the method has a positive promotion effect on smooth development of stem cell basis and application research in the future.

The invention provides a method for preparing a SrNb2O6 (strontium niobate) / SrCO3 (strontium carbonate) composite nanometer material. The method comprises the following steps of using a SnNb2O6 nanometer material as a raw material; performing hydrothermal reaction in a mixed alkaline solution of potassium hydroxide and strontium hydroxide under the condition of existence of CO2 (carbon dioxide). The method provided by the invention has the advantages that the repeatability is good, the operation is simple, and the method is suitable for quantity production; the cost is greatly reduced, and theefficiency is improved. The prepared strontium niobate / strontium carbonate composite nanometer material has the advantages that the quality is stable; a better application prospect is realized in thefield of photocatalytic water treatment; the development of semi-stable state niobate crystallizing method is promoted, and the practical application study of the niobate is promoted.

An ADSS (all dielectric self supporting optic fiber cable) typhoon resistance estimation method at a coastal region comprises following steps of S1, the nonoccurrence probability of an ADSS fault is calculated with a formula: P=A*sigma (X1, X2, X3...); A=A1*A2*...*An; in the formula, P is nonoccurrence probability of the ADSS fault and is in a hundred mark system; an ADSS nonoccurrence fault estimation coefficient is represented, a nonoccurrence fault estimation coefficient of estimation objects is represented by An, if an occurrence fault is non-maintainable or directly affects typhoon resistance, An is equal to 0, if the occurrence is maintainable or capable of recovering typhoon resistance, An is equal to 1; X1, X2, X3 ... respectively represent the weights of the occurrence fault probabilities of the estimation objects; the estimation objects comprise an ADSS self fault, an ADSS electrified corrosion state, an ADSS optical fiber attenuation state, an ADSS design standard application status quo, an ADSS sag state, applicable status quo of matched tools and engineering acceptance quality. The method promotes the application research of the ADSS in a typhoon environment, solves the problem existing in the application, and has an important significance in safe operation and development of power communication networks.

The invention discloses an ultra-thin silicon nanosheet photocatalyst and its preparation method and application. It uses crystalline silicon powder as a precursor, disperses it into a solvent after being dipped in an ultra-low temperature liquid gas, and then assisted the liquid phase by ultrasonic waves. The ultra-thin silicon nano-sheet suspension is obtained by peeling off, and after the suspension is centrifuged and freeze-dried, an ultra-thin silicon nano-sheet photocatalyst with a thickness of 0.3-2.1 nm and a size of 0.1-6.5 μm is obtained. When the silicon nanosheets obtained in the present invention are used for visible light photocatalytic hydrogen production, the hydrogen production efficiency can reach 5.102 mmol h ‑1 g ‑1 , the photocatalytic hydrogen production efficiency is about 93 times higher than that of the original crystalline silicon powder. The method for preparing silicon nanosheets disclosed by the invention is simple to operate, low in cost, and can be prepared in large quantities, and the obtained silicon nanosheets have excellent visible-light photocatalytic hydrogen production performance, providing a new method for building stable and efficient photolysis of water for hydrogen production materials. train of thought.