Abstract: Provided is an apparatus containing, as a cathode catalyst, a metal oxide/carbon catalyst composition. The metal oxide/carbon catalyst composition includes 40 to 95 wt % porous Mn—Co spinel oxide nanoparticles of the formula MnxCo3-xO4. The nanoparticles have an octahedral morphology, an average particle size of 5-100 nm, and average pore sizes of 1-5 nm (where x is the atomic fraction of manganese and 3-x is the atomic fraction of cobalt). The metal oxide nanoparticles are supported on a carbon substrate that contains at least 96 atomic % carbon.

Abstract: A lidar-based convergence deformation monitoring system for surrounding rock around a TBM shield region, including a data acquisition module. The data acquisition module includes: a lidar, a push-rod motor, an H-bridge circuit, a power supply module, an ARM chip, a guide rod, a linear bearing, a tempered glass cover and a protective case. The lidar and the push-rod motor are connected to a lidar connector to acquire raw data of the surrounding rock and store the raw data in the ARM chip. A middle portion of a top plate of the protective case allows the lidar to extend out of the protective case. The protective case is fastened to an inner wall of the TBM shield through two mounting brackets on both sides of the protective case, and the inner wall facilitates the lidar to extend out of the protective case to perform a measurement.

Abstract: A lightweight micro-closed-pore corundum composite refractory and a method preparing the same, wherein raw materials of the refractory comprise 95-99 parts by weight of ?-Al2O3 micro-powder and 1-5 parts by weight of dolomite clinker; and additives of the refractory comprise 2-15 parts by weight of nano alumina sol, 5-15 parts by weight of a carbohydrate polymer, and 30-50 parts by weight of an organic alcohol. and the lightweight micro-closed-pore corundum composite refractory is prepared by: mixing and wet grinding the raw materials and the additives to obtain a slurry; placing the slurry in a mold, keeping the mold at 15-25° C. for 6-12 hours and then keeping the mold at 60-90° C. for 6-12 hours, then demolding; drying a demolded green body at 110-200° C. for 24-36 hours, and keeping the green body at 1800-2000° C. for 2-5 hours. A method preparing a lightweight micro-closed-pore corundum composite refractory is also provided.

Abstract: A trusted kernel starting method and apparatus are provided. The method includes: starting a security boot module boot loader; invoking the boot loader to measure, according to a first security algorithm, whether a platform configuration register (PCR) partition is trusted; if the PCR partition is trusted, invoking the boot loader to read kernel code into a memory, and invoking the boot loader to measure, according to a first complete algorithm and a kernel code standard measurement value prestored in the PCR partition, whether the kernel code is trusted; initializing, if the kernel code is trusted, the kernel code to trigger an initialized kernel to measure, according to a second complete algorithm, whether the boot loader is trusted; and starting the kernel if the boot loader is trusted. Kernel starting security is improved.

Abstract: Provided is a method for room-pressure and low-temperature preparation of graphene, comprising: heat treating a compound of graphite oxide and sulfuric acid in either room pressure or negative pressure at a temperature between 50 and 400° C., thus converting graphite oxide into graphene. Also provided is a method for low-temperature preparation of a graphene composite material. The acquired graphene and graphene composite material are applicable in optical materials, electrically-conductive materials, sensor materials, catalytic materials, battery materials, and supercapacitor materials.

Abstract: An asymmetric-computing type shared key establishing method suitable for cloud computing and IoT has the following advantages. The realization efficiency and the security level are high, and a cryptographic algorithm coprocessor is not needed. The method can be applied to occasions in which the computing capabilities are asymmetric, and attacks from quantum computers can be resisted. Compared with a conventional key exchange protocol such as the Diffie-Hellman key exchange protocol, the method can be more effective between servers and mobile equipment in the security fields as the IoT and cloud computing, and the method can be used in both the electronic environment and the quantum environment. Thus, the asymmetric-computing type shared key establishing method suitable for cloud computing and IoT provided by the invention can be widely applied to the field of information security systems such as network security and e-commerce.

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: An RTV anti-pollution flashover coating, and preparation method, includes components of the following weight parts: polydimethylsiloxane 100 parts, a reinforcing filler 4 to 10 parts, a catalyst 0.1 to 1 part, a crosslinking agent 1 to 5 parts, a hydrophobic agent 3 to 6 parts, a pigment 1 to 2 parts, decabromodiphenyl ether 1 to 2 parts, and toluene 30 to 40 parts. The hydrophobic agent is a mixture of a substance having a structure represented by Formula I and any one or more of a low-molecular weight silicone oil, dihydroxydiphenyl silane, fluorine-containing silicone oil and white oil.

Abstract: The present invention relates to a non-toxic process and system for pilot-scale production of cellulose products, and particularly to a process and system for pilot-scale production of cellulose products by using aqueous sodium hydroxide/urea solution pre-colled to lower than ?8° C., in which cellulose could dissolved rapidly. The said process and system can be used to produce fibers, films, chromatographic packings, or nonwovens of regenerated cellulose, as well as to produce a variety of high added-value products by adding other materials such as functional materials, nano-materials, etc.

Abstract: A method for extracting vanadium from shale, the method including: a) grinding the shale into fine powders, mixing the fine powders with an additive in a mass ratio of 1:0.04-0.12 to yield a mixture, heating the mixture to a temperature of between 850 and 950° C. at a heating rate of 5-9° C./min, and baking the mixture for between 30 and 90 min; b) immersing the product in water and acid respectively to yield a first solution and a second solution, combining the two solutions, and performing ion exchange adsorption on the combined solution using a styrene-divinylbenzene based macroporous anion-exchange resin; and c) performing desorption, purification, and precipitation to yield poly ammonium vanadate, and calcining the poly ammonium vanadate at a temperature of between 450 and 530° C. for between 20 and 50 min to yield V2O5.

Abstract: A method and an apparatus for measuring sedimentation of a solid-liquid two-phase mixture are provided. A standard work curve and/or standard mathematical model, indicating a relationship between thermal conductivity (k) and concentration (?) (and/or density (?)), are provided for measuring sedimentation of the solid-liquid two-phase mixture. To measure the sediment, thermal conductivities (k) are measured at settling times (t) to obtain a relationship (k?t). Concentrations (?) and/or densities (?) are then determined, based on the measured relationship (k?t) and the standard work curve and/or the standard mathematical model. A sedimentation rate is determined according to a variation rate of the thermal conductivity. A sedimentation status, sedimentation degree, and/or complete sedimentation degree are determined according to variation rate and variation degree of the thermal conductivity (k), the concentration (?) and/or the density (?) of the solid-liquid two-phase mixture to be measured.

Abstract: This invention relates to methods, compositions, and kits for enzymatic phosphorothioation of the sugar-phosphate backbone of nucleic acids. The invention allows for phosphorothioation of pre-existing nucleic acids.

Abstract: A method for extracting vanadium from shale, the method including: a) grinding the shale into fine powders, mixing the fine powders with an additive in a mass ratio of 1:0.04-0.12 to yield a mixture, heating the mixture to a temperature of between 850 and 950° C. at a heating rate of 5-9° C./min, and baking the mixture for between 30 and 90 min; b) immersing the product in water and acid respectively to yield a first solution and a second solution, combining the two solutions, and performing ion exchange adsorption on the combined solution using a styrene-divinylbenzene based macroporous anion-exchange resin; and c) performing desorption, purification, and precipitation to yield poly ammonium vanadate, and calcining the poly ammonium vanadate at a temperature of between 450 and 530° C. for between 20 and 50 min to yield V2O5.

Abstract: An RTV anti-pollution flashover coating, and preparation method, includes components of the following weight parts: polydimethylsiloxane 100 parts, a reinforcing filler 4 to 10 parts, a catalyst 0.1 to 1 part, a crosslinking agent 1 to 5 parts, a hydrophobic agent 3 to 6 parts, a pigment 1 to 2 parts, decabromodiphenyl ether 1 to 2 parts, and toluene 30 to 40 parts. The hydrophobic agent is a mixture of a substance having a structure represented by Formula I and any one or more of a low-molecular weight silicone oil, dihydroxydiphenyl silane, fluorine-containing silicone oil and white oil. In Formula I, R is any one of acetoxy CH3COO—, methoxy CH3O—, ketoximo MeEtCNO—, an amide group AcMeN—, amino C6H11NH— and acetonyl H2C?CMeO; R1—Si is a polysiloxane group or a fluorine-containing siloxane group, and has a structural formula represented by Formula II, where n=1 to 4, and R2 is CH3— or CF3—.

Abstract: The present invention relates to an electric vehicle motor automatic transmission driving system. The motor automatic transmission driving system includes a motor, a gear transmission, one or more battery groups and a control system. The control system includes a motor controller, a system controller, a battery voltage sensor, a battery current sensor, a first rotation speed encoder, a second rotation speed encoder, a fork position sensor group, a transmission oil (fluid) temperature sensor and a pressure source sensor. The power input of the motor controller is connected with the outputs of one or more battery groups respectively via a first power leads, the power output of the motor controller is connected with the power input of the motor via a second power lead. According to the invention, the motor shaft also act as the first shaft of the gear transmission and the said motor is an AC induction motor or an AC permanent magnet motor.

Abstract: The present invention provides a solid-liquid composite material, a manufacturing method and an application of the same. Liquid-phase material, solid-phase material, and solvent are distributed to form a distributed system. The solid-phase material and liquid-phase material in the solvent can be suspensions, emulsions, microemulsions, colloids, or solutions. A portion or all of the solvent is removed to produce the solid-liquid composite material. The liquid-phase material is approximately equal to 1%˜80% of the total mass of the solid-liquid composite material. The porosity of the solid-phase material is approximately equal to 10%˜80% in the solid-liquid composite material. The specific surface area of the porous material is approximately equal to 50˜2000 cm2/cm3. The field-chromatic material is added to the solid-liquid composite material to form a field-chromatic device.

Abstract: An RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid)/?-tricalcium phosphate composite material is composed of ?-tricalcium phosphate particles and RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) with mass ratio of 1:10-1:100, in which the ?-tricalcium phosphate particles are uniformly dispersed in the RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) matrix. The preparation method includes that poly (glycolic acid-L-lysine-L-lactic acid) is polymerized with GRGDY short peptide (glycin-arginine-glycin-aspartic acid-tyrosine sequence) to obtain RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid), and then RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) is compounded with ?-tricalcium phosphate particles.

Abstract: The present invention relates to the use of an aqueous sodium hydroxide/thiourea solution, specifically to the use of an aqueous sodium hydroxide/thiourea solution for pilot-scale production of cellulose products, wherein sodium hydroxide constitutes 8.1%-12.0% of the total weight of the aqueous solution, thiourea constitutes 3.0%-6.0% of the total weight of the aqueous solution, and said cellulose products include regenerated cellulose filaments, films, nonwovens, as well as composite fibers and/or functional materials of protein/cellulose, chitin/cellulose, Konjac Glucomannan/cellulose, nano-crystal particle/cellulose, etc.

Abstract: A method of producing a high quality of yarn by an iron-heating apparatus, including the steps of: guiding a yarn to pass between upper and lower rollers, wherein the yarn is exited at a front nip in a twisting triangle area; guiding the yarn to enter to a groove of a heating main body of the iron-heating apparatus; heating the yarn along the groove to reduce a rigidity of the yarn so as to allow the yarn to be easily twisted to form an improved yarn with high quality; and enwrapping the improved yarn on a spun yarn tube. In addition, a counter frictional force is applied at the yarn through walls of the groove such that fiber on a surface of the yarn is further twisted to the yarn for minimizing hairiness.

Abstract: A pulverizing apparatus comprising: a grinding chamber formed between the inlet of materials and the outlet of the materials with bearings at the bottom, a shaft supported in the bearings extending into the grinding chamber and being driven by a motor, a conical plate mounted on the shaft with more than one radial blades or radial hammer plates on its inner surface, a powder selector, an air-blower and an air duct connecting the blower with the grinding chamber, the air vent of said air duct located above the conical plate. The pulverizing apparatus merges hammer pulverization, impact pulverization and power self-grind into a whole, which simultaneously finishes intermediate crush, fine crush and grinding materials, and which can improve the fineness and transmit the unfinished product into a selecting system by creating the high speed vortex.