51results about How to "App market is good" patented technology

The invention discloses a pipe, a method for making the pipe and a telescopic water pipe, aiming to provide a pipe that can be stretched, has a uniform structure, and does not produce wrinkle angles when stretching. In the state of natural shrinkage of the pipe body, the pipe wall integrally extends outwards with several flexible convex rings, and in the state of natural shrinkage of the pipe body, the pipe wall integrally extends inward with several flexible concave rings. The pipe body of this structure can be uniform When deforming and shrinking, the outer wall of the pipe is composed of a number of flexible convex ring outer walls, and the inner wall is composed of a number of flexible concave ring inner walls. Or the skin, when stretched, the pipe is approximately tubular, that is, there are tiny wavy structures on the inner and outer walls, which can effectively buffer the force on the inner and outer walls of the pipe, so that the pipe has good structural strength and uniform shape deformation, and has a good application market.

The present invention discloses a PVDF@KUAST-8 nanofiber composite film for a friction nanogenerator and a preparation method of the film. The preparation method comprises the following steps of adding KUAST-8 powder into acetone and ultrasonically forming suspension liquid A, dissolving PVDF in DMF to prepare a solution B, and uniformly mixing the suspension liquid A and the solution B to preparea spinning solution C; and loading the spinning solution C into an injector for electrostatic spinning to obtain the film. The invention also provides the PVDF high-performance friction nanogeneratorprovided with a fluorine-containing metal organic framework material and obtained by the PVDF@KUAST-8 nanofiber composite film for the friction nanogenerator and the preparation method of the film. The PVDF@KUAST-8 nanofiber composite film improves the output power density of PF-TENG, can directly collect and convert low-frequency mechanical energy in the environment into electric energy, and isan environment-friendly energy device.

The invention provides an untwisting and twisting device. The untwisting and twisting device comprises an L-shaped base, the L-shaped base is internally provided with a sleeve bearing, one end of a copper coin base sleeve penetrates through the inside of the sleeve bearing, and the other end of the copper coin base sleeve is internally provided with an M-shaped copper coin base and H-shaped rubberroll clamping bases. The M-shaped copper coin base is internally provided with a pair of paralleled clamping rubber rolls, and the two ends of the clamping rubber rolls are limited by oblique groovesin the side face of the M-shaped copper coin base and the H-shaped rubber roll clamping bases. Two clamping base springs are installed between the H-shaped rubber roll clamping bases and the copper coin base sleeve; two opposite holes are formed in the outer side of the copper coin base sleeve, two copper coin base positioning bolts are symmetrically arranged in the holes, and positioning holes matched with the copper coin base positioning bolts are formed in the upper face and the lower face of the M-shaped copper coin base. The invention further provides a superfine yarn spinning machine and a superfine yarn spinning method. The untwisting and twisting device is simple in structure, simple and reliable in motion and low in production cost, and has a potential speed-up space and a good application market.

The invention discloses a SERS-SPR dual-mode sensor for nucleic acid detection. The dual-mode sensor comprises a detection chip and a DNA probe, and the detection chip is a silver nanopore-nanorod array substrate with tetrahedral DNA modified on the surface. The invention also discloses a preparation method and a detection method of the SERS‑SPR dual-mode sensor. In the present invention, the detection chip is sequentially mixed with the liquid sample to be detected and the DNA probe solution, and a "detection chip-target DNA-DNA probe" complex is formed through complementary pairing, and then the transmission spectrum test and the SERS test are sequentially carried out. The wavelength change of the valley, the SERS spectrum and its characteristic signal intensity value realize the highly sensitive and specific dual-mode sensing detection of nucleic acids in serum. The liter level and sub-picomole level can realize the detection of nucleic acid markers in complex environments such as serum.

A device for automatically measuring the thermocouple coefficient in a T12-type soldering iron core and its use method. After the T12-type soldering iron core is fully contacted with the K-type standard thermocouple, the T12-type soldering iron core is heated, and the heat is conducted to the K-type standard thermocouple. Use the microprocessor control circuit to measure the voltage of the K-type standard thermocouple, and obtain the temperature of the soldering iron core according to its thermocouple coefficient, and at the same time measure the voltage of the thermocouple in the T12-type soldering iron core to be tested; and automatically control the electrification of the T12-type soldering iron core current to heat the T12-type soldering iron core to different temperatures, repeatedly measure the voltage of the thermocouple in the T12-type soldering iron core at different temperatures, and finally obtain the coefficient table of the voltage value and temperature of the thermocouple in the T12-type soldering iron core, and finally this coefficient table Output to the operation control terminal through the USB interface. The invention can adjust the temperature of the soldering iron core according to requirements, control the temperature within a certain range, avoid damage to the performance of the soldering iron core due to excessive temperature, and overcome the problems that the current soldering iron core thermometer cannot measure automatically, the data is inaccurate, and the operation is inconvenient.

A water polyacrylate emulsion for printing is prepared through proportionally mixing water, emulsifier, trigger, perspex, acrylic acid (methyl) acrylate, and polymerizing at 70-85 deg.C for 5-8 hr. Its advantages are high solid content, small diameter of emulsoid particles, low viscosity, high stability, non-toxic and no environmental pollution.