Guangzhou Special Pressure Equipment Inspection and Research Institute

South China University of Technology

Guangzhou Automobile Group Co., Ltd.

Kingfa Sci.&tech.co., Ltd.

Comba Telecom Technology (guangzhou) Limited

Comba Telecom Systems (china) Limited

Yanfeng Automotive Trim Systems Co., Ltd.

Bo Yang

Lin Wei Yang

Xianbo Huang

Maodong Li

Shiping Li

Zhenling Wu

Zhigang Chen

Yonghua Wang

Jinmei Lin

Hui Zhang

Dongming Lan

Wen Yu

Zhigang Wang

Wei Zhai

Zhigang Li

Shuanghong Zhang

Daoming Li

Guojia Huang

Weifei Wang

Huayong Chen

Peng Wang

Nanbiao Ye

Wei Xiang

Chao Ding

Ming Zeng

Jianfeng Hou

Xuehui Li

Zhongfu Luo

Wenlong Li

Yue Li

Weiwen Ye

Juan Liu

Zhijun Cai

Nan Liu

Guangwei Zhang

Xueyong Zhang

Fang Wen

Lan Zhao

Mingliang Xin

Yinghui Zhou

Huachao Guo

Yingyi He

Shaohu Fang

Yang Ou

Wenxian Huang

Yuhui Du

Huijun Xu

Xiedong Lin

Zhen Liu

Hua Li

Junming Zhao

Baoguo Ding

Zongjie Yin

Pengfei Huang

Fanghua Wang

Congchuan Chen

Qigao Feng

Yanfang Zeng

Dongqi Zhu

Xiaoping Li

Jinfen Su

Zhengcheng Li

Juanxia Su

Li Peng

Chaoliang Lu

Yezhong Chen

Zhengya Ding

Liang Lei

The invention belongs to the field of bioengineering and food technology, and discloses a method for enzymatic resolution of chiral substances, including the following steps: (1) preparing an enzyme solution with a lipase concentration of 1-3000 U/mL, and adding a soluble salt, a hydrophilic solvent and a hydrophobic solvent to the enzyme solution to form a three-liquid phase system; the hydrophobic solvent contains esters or amide compounds composed of racemic chiral compounds; (2) subjecting the three-liquid phase system to enzyme-catalyzed reaction under stirring condition; after the reaction is completed, standing or centrifuging the three-liquid phase system to divide it into three layers, which are a upper liquid layer, a middle liquid layer and a lower liquid layer from top to bottom. The optically pure chiral product after hydrolysis is mainly rich in the middle liquid layer or the lower liquid layer, while the upper liquid layer product is another ester or amide product containing an optically pure chiral product. The method has the advantages of low energy consumption, high raw material utilization rate, and mild reaction conditions, and solves the problems of low chiral resolution efficiency, poor chiral selectivity, low recovery rate, and difficulty in industrialization in the existing enzymatic method.

Method for enzymatic resolution of chiral substances

A collision warning method in relation to vulnerable road users (VRUs), applied in a host vehicle when being driven, obtains a relative lateral distance between a vehicle and a VRU and obtains speed of movement of the VRU in addition to speed and direction of the host vehicle. A warning scenario is determined according to the relative lateral distance and the VRU speed. A warning distance according to the warning scenario and the relative speed is calculated, a relative distance between the host vehicle and the VRU is obtained, and the issue of a corresponding level of a collision warning is determined according to a comparison between the warning distance and the relative distance.

Collision warning method, and system for protecting vulnerable traffic participant, and storage medium

A lightning strike fault monitoring system for a wind turbine generator system and a lightning protection system () thereof, wherein the lightning strike fault monitoring system for the wind turbine generator system includes the lightning protection system. The lightning protection system () comprises a main body () provided with a blind hole (), a core (), a connecting member () made of gasifiable material, a first elastic member (), a second elastic member (), a sealing cover (), a bottom plate (), and a switch used for connecting between an external signal source and a detecting terminal. The core () and the first elastic member () are respectively accommodated in the blind hole (), and the core () is connected to the main body through the connecting member (). One end of the first elastic member () abuts against the core (), and the other end is connected to the bottom wall of the blind hole (). One side of the sealing cover () is connected to the bottom plate () through the second elastic member (), and the other side of the sealing cover () abuts against the core (). The switch is mounted on the bottom plate (). The lightning protection system () can accurately provide electrical signals for the detecting terminal, so that maintainer can be accurately aware of the occurrence of a lightning strike in order to perform maintenance and troubleshooting of lightning strike failure, thereby improving safety.

Lightning strike fault monitoring system for wind turbine generator system and lightning protection system

An enzymatic deacidification method for partial glyceride lipase and PUFA-rich oil, comprising the following steps: 1) mixing a polyunsaturated fatty acid (PUFA)-rich oil with a non-polar organic solvent and a short-chain monohydric alcohol, adding an immobilized partial glyceride lipase to carry out an esterification reaction, wherein the partial glyceride lipase is a mutant obtained by mutating the Phe at the 278th position of Lipase SMG1 as Asn; 2) recovering the immobilized enzyme, and recovering the organic solvent and the monohydric alcohol so as to obtain a deacidified PUFA-rich oil. The partial glyceride lipase does not catalyze alcoholysis of triglyceride and like side reactions, has high deacidification efficiency, low reaction temperature, prevents high temperature oxidation of PUFAs, and the immobilized enzyme may be recovered and reused repeatedly, and thus the present invention has good application prospects in industry.

Method for enzymatic deacidification of polyunsaturated fatty acid-rich oil

Provided is a method for preparing graphene by liquid-phase ball milling exfoliation, including following steps: mixing a transition metal halide salt, a nitrogen source substance and an organic solvent to prepare an intercalation agent; mixing the intercalation agent with graphite, carrying out ball milling, and then performing centrifugation to obtain a graphite intercalation compound; washing and filtering the graphite intercalation compound obtained, adding an expansion agent, and carrying out ultrasonic agitation to obtain a graphene dispersion; and washing, filtering and drying the graphene dispersion to obtain graphene powder.

Method for preparing graphene by liquid-phase ball milling exfoliation

The present application relates to a data transmission method, a host unit, an extension unit, a base station system, and a readable storage medium. The method is applied to a base station system, the base station system includes: a host unit, a plurality of extension units, and a plurality of remote units; the host unit is communicatively connected to the extension units, and each of the extension units is communicatively connected to at least one of the remote units, which includes: the host unit determines a target extension unit corresponding to the user equipment from the extension units according to uplink signal respectively received from the extension units; the uplink signal sent by each extension unit is used to indicate a quality state of signaling between the remote unit connected to the extension unit and the user equipment; sends instruction information to the target extension unit; the instruction information is used to instruct the target extension unit to send uplink data of the user equipment received from the remote unit to the host unit; and receives the uplink data sent by the target extension unit. Using this method can reduce the requirement for the front-haul bandwidth.

Data transmission method, host unit, extension unit, and base station system

An enzymatic method for preparing glyceryl butyrate, comprising: (1) carrying out an esterification reaction between n-butyric acid and glycerol using lipase as a catalyst, ethyl acetate and/or ethyl formate as an additive; (2) separating the reaction product, recovering the additive by distillation under reduced pressure to obtain glyceryl butyrate. The invention uses lipase as a catalyst to catalyze the esterification reaction of n-butyric acid and glycerin at normal temperature and normal pressure, reduces the energy consumption of the reaction. Also, the reaction condition is mild, no side reaction happens, and no water-carrying agent is used. In addition, the additive increases the catalytic efficiency of the lipase and the conversion rate of butyric acid.

Enzymatic method for preparing glyceryl butyrate

A polypropylene composition, a preparation method thereof, and a film or a sheet prepared from the polypropylene composition and use thereof. The composition includes 45 parts to 75 parts of a polypropylene, 10 parts to 35 parts of an elastomer, 5 parts to 20 parts of a polyethylene, 0.1 parts to 0.5 parts of an antioxidant, and 0.1 parts to 0.5 parts of a lubricant. A half peak width of a crystallization peak of the polypropylene is 5&#xb0; C. to 10&#xb0; C., and a peak temperature of the crystallization peak of the polypropylene is 105&#xb0; C. to 115&#xb0; C. The polypropylene composition has a good tenacity, especially a&#x2212;30&#xb0; C. low-temperature impact performance. The film or the sheet prepared from the composition and applied to automotive interior parts, can enable the external accessories not only to be less likely to generate sharp fragments while being strongly impacted, but also to have a matte characteristic.

Polypropylene composition and preparation method thereof, and film or sheet prepared from the polypropylene composition and use thereof

The invention discloses a small cell base station system, and related devices and data processing methods, and the small cell base station system includes an extended small cell base station and at least one distributed component, where the extended small cell base station includes a network protocol processing module, an upper layer protocol processing module, a physical layer protocol processing module, a first baseband data processing module, and a first transceiver module; and the distributed component includes a second baseband data processing module and a second transceiver module, where in the downlink, the first baseband data processing module separates downlink baseband data into at least two branches, performs a data alignment operation on the at least two branches of downlink baseband data, sends one of the branches to the first transceiver module, and Ethernet encapsulates and then sends the remaining branches to the second transceiver module through the second baseband data processing module of the distributed component, thus extending a coverage area of the small cell base station system.

Small cell base station system, and related devices and data processing methods

A phosphorus-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning is provided, which contains tourmaline, green corrosion and scale inhibitor, zinc salt and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of the green corrosion and scale inhibitor is 5-50 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), wherein the tourmaline includes dravite, schorlite, elbaite, manganese tourmaline, uvite or the like. The green corrosion and scale inhibitor contains any one, or two or three of polyaspartic acid, polyepoxysuccinic acid and polymaleic acid. Copper corrosion can be effectively inhibited by adding 0.2-2 g/t of benzotriazole (calculated based on solid form) into copper-containing devices. Also disclosed is a method of preparing the phosphorous-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

Phosphorus-free corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

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Guangzhou, China

Bo Yang