Abstract: A hydrogen-bonded organic framework nanosheet, a preparation method and application thereof are provided. The preparation method includes in a small heat-resistant glass container, mixing 1,2,4,5-tetrakis (4-carboxyphenyl) benzene (H4TCPB) with N,N-dimethylformamide (DMF), heating until the solid is dissolved, placing the uncapped small glass container in a large heat-resistant glass container filled with some water, sealing the large glass container, standing and heating the large glass container in a constant-temperature oven to obtain colorless crystals, suction filtering to obtain a solid material, drying, grinding, and then dispersing the solid material in a solvent, performing ultrasonication in an ice-water bath, centrifuging to discard supernatant, and drying to obtain the hydrogen-bonded organic framework nanosheets.

Abstract: A suspended bed electro-membrane bioreactor system is provided, including a cathode chamber with a tubular structure with a sealed bottom; an anode chamber with a tubular structure located in the cathode chamber, where there is a gap between an outer wall of the anode chamber and an inner wall of the cathode chamber, and the anode chamber is provided with a proton channel region in a middle, is fixedly connected with an anode cover plate in a top and is filled with an anode assembly; a stainless steel membrane module located in the gap and electrically connected with the anode assembly; a polymethyl methacrylate partition plate located in the gap, forming a closed cylindrical space with the stainless steel membrane module and communicating the cathode chamber and the anode chamber; and a suspended bed filled between the closed cylindrical space and the anode chamber.

Abstract: Disclosed is a method for detecting a block chain abnormal behavior based on graph embedding. The method comprises S100: data collection: acquiring public block chain abnormal behavior node data on the Internet, and acquiring normal nodes in a number equal to that of abnormal behavior nodes at the same time; S200: establishment of abnormal behavior recognition model: extracting features of all nodes, constructing the nodes subjected to feature extraction into a transaction graph, and forming the abnormal behavior recognition model based on a graph embedding technology according to the constructed transaction graph; and S300: transaction detection: determining a transaction risk according to the obtained abnormal behavior recognition model when a transaction occurs, and prompting a user of a risk level. According to the method for detecting the block chain abnormal behavior based on graph embedding, abnormal behaviors possibly existing in block chain transactions can be effectively detected and early warned.

Abstract: The present invention discloses a double cantilever beam-encoding lead screw combined sensing tensile test method and machine. The double cantilever beam-encoding lead screw combined sensing tensile test machine comprises a main frame, a standard, a test piece and a microcomputer numerical control unit. The main frame is a force-deformation combined sensing mechanism composed of a double cantilever beam sensor, an encoding lead screw and a drive device. The double cantilever beam sensor is composed of a fixed cantilever beam sensor and a movable cantilever beam sensor. The encoding lead screw is composed of a drive lead screw and a tristate encoder. The double cantilever beam sensor matches with the encoding lead screw to achieve three functions, namely, test piece clamping, force sensing and deformation sensing, as well as to measure the size of the test piece.

Abstract: A method for preparing carbon nanotubes graphene modified aqueous polyurethane coatings and adhesives, which includes the steps of: (a) preparing carboxylated carbon nanotubes graphene nano-sheets; (b) mixing polytetrahydrofuran ether glycol with isophorone diisocyanate for reaction in the presence of dibutyltin dilaurate; and then adding 2-sulfobenzoic anhydride, carboxylated carbon nanotubes and graphene sheet into the mixture and allowing reaction under 90° C. for 2 hours to obtain a polyurethane prepolymer A; and (c) adding chain extender and acetone into the prepolymer A and allowing reaction under 65° C. to 75° C., adding D-panthenol and 2,4,6-trihydroxy benzoic acid and allowing reaction under 75° C. to 85° C. for 0.

Abstract: The present invention relates to a pyrazolo[1,5-a]pyrimidine derivative of general formula 1 and a pharmaceutically acceptable salt thereof. The present invention also relates to use of compounds of formula 1 in the preparation of an anti-tumor medicament.

Abstract: The present invention relates to a benzothiazole derivative of formula 1 or a pharmaceutically acceptable salt thereof and a process for preparation thereof. The present invention also relates to a pharmaceutical composition comprising the compounds and the use of the compounds in the preparation of an anti-tumor medicament.