Abstract: The invention discloses a high impermeability and low thermal conductivity inorganic lightweight foam concrete and its preparation method, including the following mass fraction of raw materials: 1260˜1540 parts of ordinary silicate cement, 20˜60 parts of nano-silica, 460˜740 parts of fly ash, 360˜440 parts of aggregate, 9˜11 parts of redispersible latex powder, 7.2˜8.8 parts of polypropylene fiber, 27˜33 parts of quick-setting agent, 500 parts of fluorine-free foam, 900˜1100 parts of water. 33 parts, 500 parts of fluorine-free foam, 900˜1100 parts of water. The high impermeability and low thermal conductivity inorganic lightweight foam concrete prepared by the present invention has a simple formulation, good workability, light weight and low thermal conductivity, and is suitable for the construction of thermal insulation system for building exterior walls.

Abstract: A method for producing 2-keto-3-deoxygluconate (KDG) from 2-(acetylamino)-2-deoxy-D-gluconic acid (GlcNAc1A) by two enzymes; GlcNAc1A is converted to KDG by incubating GlcNAc1A with a deacetylase OngB at 25° C. for 4-12 h and then with a deaminase OngC at 25° C. for another 10-15 h; it constructs two engineered E. coli/pET22b-ongB (carrying the ongB gene) and E. coli/pET22b-ongC (carrying the ongC gene) strains to prepare recombinant proteins OngB and OngC, respectively; at the action of these two enzymes, OngB and OngC, GlcNAc1A is converted to KDG, which solves the bottleneck of GlcNAc1A utilization during the bioconversion of chitin; the KDG is an important metabolic intermediate to synthesize furan derivatives, herbicides, food additives and other industrially important chemical compounds, having wide industrial applications.

Abstract: MLX1034 is from Polaribacter sp. Q13, and has the amino acid sequence of the 1,3/1,4-xylanase MLX1034 is listed in SEQ ID NO.1; a nucleotide sequence of the gene is listed in SEQ ID NO.2; the 1,3/1,4-xylanase MLX1034 in the invention is capable of efficiently and specifically degrading 1,3/1,4-xylan and producing xylooligosaccharides with DP values above one; in addition, the physical and chemical properties of the 1,3/1,4-xylanase MLX1034 are stable enough to hydrolyze 1,3/1,4-xylan at room temperature; the 1,3/1,4-xylanase MLX1034 is suitable for the industrial production of red algal xylooligosaccharides at low energy costs.

Abstract: A valve set integrated module includes a body, a first and a second electric valves. The body is provided with multiple internal flow channels and multiple interfaces configured to communicate the internal flow channels with a heat exchange assembly. The first and second electric valves on the body are in communication with the internal flow channel. The first and second electric valves are both switchable between a blocked/unblocked position and a throttled position. A first end of the first electric valve is in communication with an interior condenser outlet interface. A second end of the first electric valve is in communication with an exterior heat exchanger inlet interface. A first end of the second electric valve is in communication with an exterior heat exchanger outlet interface. A second end of the second electric valve is selectively communicated with an interior evaporator inlet interface or a gas-liquid separator inlet interface.

Abstract: A valve set integrated module, a thermal management system, and a vehicle are provided. The valve set integrated module includes a body, a first electric valve, and a second electric valve. The body is provided with multiple internal flow channels and multiple interfaces configured to communicate the internal flow channels with an external heat exchange assembly of the thermal management system. The first electric valve and the second electric valve are arranged on the body and configured to communicate parts of the multiple internal flow channels to form multiple different thermal management circuits. The first electric valve and the second electric valve are configured to unblock/block and/or throttle the thermal management circuits to achieve at least one of the multiple preset thermal management modes.

Abstract: A valve manifold integration module for a thermal management system is provided. The thermal management system has multiple preset thermal management modes. The valve manifold integration module includes: multiple flow channels, disposed inside the valve manifold integration module; and a valve manifold, including multiple valves. The valves are disposed on the valve manifold integration module. The valves communicate with the flow channels. The multiple flow channels are communicated with each other via the valves to form fluid channels, to realize at least one of the thermal management modes.

Abstract: Provided are a DNA vaccine against SARS-CoV-2 virus infection in a subject which comprises a codon optimized polynucleotide sequence encoding a polypeptide of the SARS-CoV-2 virus. Also provided are a vaccine combination against SARS-CoV-2 vims infection, which comprises said DNA vaccine and an antigen peptide vaccine. The vaccine combination is able to confer a full protection against the SARS-CoV-2 vims infection in NHP studies.

Abstract: An integrated valve module includes a body including first flow channel that includes a first branch channel; an interface disposed on the body and including an indoor condenser outlet interface, an outdoor heat exchanger inlet interface, and a first interface of a motor heat exchanger; and a valve set disposed on the body and including a first electric valve and a second electric valve. A first port of the first electric valve is connected with the indoor condenser outlet interface. A second port of the second electric valve is connected with the outdoor heat exchanger inlet interface, and a third port thereof is connected with the first interface of the motor heat exchanger. A first opening communicates with a second port and a third port of the first electric valve, and a second opening communicates with a first port of the second electric valve, are disposed on the first branch channel.

Abstract: A terminal is provided, including: a first sub-part, a second sub-part, at least two first flipping bands and at least one second flipping band. A first end of the first band is attached to a first lengthwise edge of a screen of first sub-part, a second end of the first band is attached to a second lengthwise edge of a screen of second sub-part. A first end of the second band is attached to a first lengthwise edge of the screen of second sub-part, a second end of the second band is attached to a second lengthwise edge of the screen of first sub-part. The bands are alternately arranged. When the terminal is unfolded, the screens of the sub-parts are coplanar, the first band fits onto an outer surface of the first or second sub-part, and the second band fits onto an outer surface of the second or first sub-part.

Abstract: The present invention discloses a method for purification of bacterial capsular polysaccharide at low temperature (<20° C.) by salt-induced two-phase aqueous micellar system with TritonX-114 and can significantly reduce the endotoxins. Impurity proteins and the endotoxins need to be removed as many as possible in the preparation process of bacterial capsular polysaccharide vaccine to reduce the side reaction of the vaccines. Currently, the phenol extraction method, column chromatography and ethanol precipitation method all have a number of drawbacks. As compared with the phenol, the nonionic detergent has the advantages such as non-corrosiveness and non-carcinogenicity, and does not cause harm to the environment. As compared with the column chromatography, the method of the present invention is large in throughput, time-saving, economical, and easily expanding the scale production, which is a safe, environment-friendly and efficient.