5results about How to "Good repeat stability" patented technology

The present invention provides a capacitive-piezoresistive dual-mode flexible pressure sensor and a preparation method thereof, wherein the sensor comprises: an upper packaging layer, an upper electrode layer, an intermediate dielectric layer, a lower electrode layer and a lower packaging layer arranged from top to bottom, wherein the upper electrode layer has a protruding structure on one side relative to the intermediate dielectric layer, and the intermediate dielectric layer has a groove structure adapted to the protruding structure on one side relative to the upper electrode layer, and the lowest point of the protruding structure is at a certain distance from the bottom of the groove structure, and the sensor further comprises wires respectively fixed to the outer surfaces of the upper and lower electrode layers. The technical solution of the present invention overcomes the problem of limited range of flexible sensors in the prior art.

The application discloses a solar photo-thermal foam for treating salt-containing organic wastewater and a preparation method thereof. The application solves the problems of poor desalination effect, low degradation ability for organic pollutants, especially volatile organic pollutants, and easy concentration of organic pollutants in the bottom liquid in the process of treating salt-containing organic wastewater by solar photo-thermal treatment. The application comprises the following steps: preparing a photo-thermal foam by loading a copper-cobalt binary metal catalyst on a nickel-based metal foam, and using the photo-thermal foam to treat water in a device for treating salt-containing organic wastewater by solar photo-thermal treatment. The porous foam substrate is used to construct a high-performance photo-thermal foam with a special morphology, and under the synergistic action of a multi-metal catalytic system, efficient desalination and catalytic persulfate degradation of organic pollutants in the bottom liquid and condensate are realized in the process of treating salt-containing organic wastewater by solar photo-thermal treatment, so that high-quality pure water is obtained. In addition, the photo-thermal foam catalyst is simple to recover and can effectively inhibit metal leaching toxicity, and has good repeated stability.

The invention relates to a prediction model of whey protein content and a prediction method thereof. The prediction model comprises a beta-lactoglobulin content prediction model and an alpha-lactalbumin content prediction model. The beta-lactoglobulin content prediction model is as follows: y1 = b1-k1 * W1; the alpha-lactalbumin content prediction model is as follows: y2 = b2-k2 * W2; wherein y1 represents the content of beta-lactoglobulin with the unit of mg / g protein, and y2 represents the content of alpha-lactalbumin with the unit of mg / g protein; w1 and W2 represent whiteness values detected by a spectrophotometer; b1 is a constant with the value ranging from 600 to 1400, and k1 is a constant with the value ranging from 8 to 14; b1 is a constant with a value of 200-350, b2 is a constant with a value of 200-350, and k2 is a constant with a value of 2.5-4. The prediction model provided by the invention not only reduces the cost of whey protein content detection, simplifies the detection process, avoids the use of toxic reagents, but also can ensure higher prediction accuracy, and can be widely applied to quality identification and application characteristic discrimination of milk and dairy products.

The invention relates to an ammonia-sensitive material based on a covalent organic framework as well as a preparation method and application of the ammonia-sensitive material. Transition metal or hydrogen is modified on a covalent organic framework to obtain a metallized or hydrogen modified ammonia-sensitive material based on the covalent organic framework, the ammonia-sensitive material is prepared into an ammonia gas detection device, NH3 sensing with high sensitivity, high selectivity and quick response can be realized, and the ammonia gas detection device has excellent repeatability and stability and can be applied to the field of ammonia gas detection. And a new material is provided for the design of a high-performance ammonia gas detection device in the future.

The invention discloses a preparation method of an electrode with a color change activity indication function, which comprises the following steps: 1) dissolving a metal source precursor in a solvent, and stirring and uniformly mixing with noble metal to obtain a mixture; (2) placing a conductive substrate into the mixture in the step (1), and carrying out hydrothermal reaction to obtain a front-end product; and (3) carrying out heat treatment on the front-end product in the step (2) to obtain the electrode with the color-changing activity indication function. The electrode with the activity indication function comprises a conductive substrate, the conductive substrate is provided with transition metal oxide loaded with precious metal M. The electrode can directly reflect the dynamic process of a catalytic reaction through color change, and the catalytic reaction is more stable. And researchers are helped to systematically establish a structure-function relationship among applied voltage-electrode color-electrocatalytic activity, so that a microscopic complex water electrolysis reaction becomes transparent and visual, and electrocatalytic basic research is promoted to develop towards intelligentization and informatization directions.