Abstract: A method for preparing a carbon nano tube/polyacrylic acid hydrogel, a product and an application thereof are provided. The method includes: oxidizing a carbon nanotube into a carboxylated carbon nanotube, thereafter performing in-situ polymerization with acrylic acid, sodium hydroxide, ammonium persulfate, triethanolamine and N, N-methylenebisacrylamide to obtain a carbon nanotube/polyacrylic acid hydrogel. The hydrogel has a uniform porous structure, facilitating a rapid transmission and supply of water. The carbon nanotubes in the hydrogel are of an array structure, achieving a full absorption of solar energy to realize a high-efficiency photothermal conversion. The gel is attached to a sponge base to obtain a solar-powered carbon nano tube/polyacrylic acid hydrogel steam generator for the photothermal conversion. The steam generator is used for solar seawater desalination, but can improve evaporation rate and evaporation efficiency.

Abstract: A chip package structure is provided and includes a PCB, a chip, a package cover, a thermal interface material layer, and a heat sink. The chip is welded to the PCB. The package cover is disposed on the PCB. The chip is packaged in the package cover. The thermal interface material layer covers the chip, and is attached to an inner top surface of the package cover. The heat sink is disposed on the PCB. An assembly space is formed between the heat sink and the PCB. The heat sink includes a contact plate. A lower end face of the contact plate abuts against an outer top surface of the package cover. A projection of the abutting member in a height direction of the chip package structure covers the chip, and is located in a region enclosed by an edge of the outer top surface of the package cover.

Abstract: A composite hydrogel sponge and its preparation method and application, and a solar desalination device are provided. The composite hydrogel sponge includes a water supply layer and an evaporation layer disposed on the water supply layer. A material of the water supply layer is polyacrylamide hydrogel, and a material of the evaporation layer is polyacrylamide/graphene composite hydrogel. The polyacrylamide/graphene composite hydrogel includes the polyacrylamide hydrogel and the graphene dispersed in the polyacrylamide hydrogel. The composite hydrogel sponge has a special porous structure of the sponge, which is beneficial to the rapid transmission and supply of water; meanwhile, the graphene on the surface of the evaporation layer can fully receive solar energy to achieve higher photo-thermal conversion efficiency.

Abstract: A method for preparing a carbon nano tube/polyacrylic acid hydrogel, a product and an application thereof are provided. The method includes: oxidizing a carbon nanotube into a carboxylated carbon nanotube, thereafter performing in-situ polymerization with acrylic acid, sodium hydroxide, ammonium persulfate, triethanolamine and N, N-methylenebisacrylamide to obtain a carbon nanotube/polyacrylic acid hydrogel. The hydrogel has a uniform porous structure, facilitating a rapid transmission and supply of water. The carbon nanotubes in the hydrogel are of an array structure, achieving a full absorption of solar energy to realize a high-efficiency photothermal conversion. The gel is attached to a sponge base to obtain a solar-powered carbon nano tube/polyacrylic acid hydrogel steam generator for the photothermal conversion. The steam generator is used for solar seawater desalination, but can improve evaporation rate and evaporation efficiency.

Abstract: The present invention related to a brain tumor-targeting peptide, a coding nucleic acid thereof, and a vector and host cell comprising the coding nucleic acid. The targeting peptide linked to a diagnostic marker can be used in brain tumor diagnosis, especially in brain tumor imaging; and the targeting peptide when linked to a therapeutic drug can carry the drug directly to a brain tumor lesion so as to achieve brain tumor treatment.

Abstract: The present disclosure provides a hydrogel tablet for relieving alcoholism and protecting the liver as well as the preparation process and application thereof. The present disclosure firstly provides a composition with the effects of relieving alcoholism and protecting the liver, which comprises the following components on the basis of weight parts: 20˜40 parts of chitosan, 25˜55 parts of sodium alginate, 3˜20 parts of gelatin, 1˜10 parts of calcium carbonate and 0.05˜0.5 parts of gallic acid. Based on this composition, the present disclosure further provides a hydrogel tablet for relieving alcoholism and protecting the liver. In the present disclosure, chitosan, sodium alginate and calcium carbonate are compounded at an appropriate proportion to form powder particles of chitosan/sodium alginate (shell)-calcium carbonate (core), into which are additionally added gelatin and gallic acid to get a product that is the hydrogel tablet.

Abstract: A screen printing device and a screen printing method are provided. The screen printing device includes a screen plate and an electrifying device, the screen plate includes a conductive mesh; and the electrifying device is electrically connected with the conductive mesh and configured to apply voltage to the conductive mesh. The screen printing method includes: adopting a printing head to rub against a screen plate to print ink onto a substrate for silk screen printing, wherein the screen plate includes a conductive mesh; and applying voltage with positive or negative polarity to the conductive mesh in the screen printing process.

Abstract: A wound-healing and hemostatic sponge of squid ink polysaccharide/chitosan, a preparation method and use thereof are provided. The sponge comprises squid ink polysaccharide and chitosan as carriers and calcium chloride as an initiator for blood coagulation, and the wound-healing and hemostatic sponge of squid ink polysaccharide/chitosan is achieved via a lyophilization technology. Particularly, the preparation method comprises slowly adding a squid ink polysaccharide solution to a chitosan solution to form a uniformly mixed solution, adding a calcium chloride solution to the uniformly mixed solution, forming a gel followed by the gel being frozen and then lyophilized, and achieving the product. The wound-healing and hemostatic sponge has a good absorbing-errhysis effect, a good pro-coagulant effect, fast hemostasis and a complete hemostatic effect, without secondary re-hemorrhage.

Abstract: A screen printing device and a screen printing method are provided. The screen printing device includes a screen plate and an electrifying device, the screen plate includes a conductive mesh; and the electrifying device is electrically connected with the conductive mesh and configured to apply voltage to the conductive mesh. The screen printing method includes: adopting a printing head to rub against a screen plate to print ink onto a substrate for silk screen printing, wherein the screen plate includes a conductive mesh; and applying voltage with positive or negative polarity to the conductive mesh in the screen printing process.

Abstract: A wound-healing and hemostatic sponge of squid ink polysaccharide/chitosan, a preparation method and use thereof are provided. The sponge comprises squid ink polysaccharide and chitosan as carriers and calcium chloride as an initiator for blood coagulation, and the wound-healing and hemostatic sponge of squid ink polysaccharide/chitosan is achieved via a lyophilization technology. Particularly, the preparation method comprises slowly adding a squid ink polysaccharide solution to a chitosan solution to form a uniformly mixed solution, adding a calcium chloride solution to the uniformly mixed solution, forming a gel followed by the gel being frozen and then lyophilized, and achieving the product. The wound-healing and hemostatic sponge has a good absorbing-errhysis effect, a good pro-coagulant effect, fast hemostasis and a complete hemostatic effect, without secondary re-hemorrhage.

Abstract: Embodiments of the present disclosure provide a method and a device for testing safety inside a vehicle. In some embodiments, one or more cameras are arranged at a first specific position inside the vehicle, and one or more sensors are arranged at a second specific position inside the vehicle. The method comprises: receiving image data acquired by the one or more cameras, and receiving sensor data acquired by the one or more sensors; and triggering alarm when the image data and/or the sensor data satisfy an alarm condition. By adopting the embodiments of the present disclosure, false alarm caused when goods are placed on the copilot seat is avoided, and the passenger on the copilot seat can be detected; and the device is low in cost and convenient in maintenance.