Saudi Arabian Oil Company

International Business Machines Corporation

Semiconductor Manufacturing International (Shanghai) Corporation

National Institute of Metrology, China

Boe Technology Group Co., Ltd.

Chinese Academy of Sciences

Ordos Yuansheng Optoelectronics Co., Ltd.

Peking University

Petrochina Company Limited

Sun Yat-Senuniversity

China Agricultural University

Banma Zhixing Network (Hongkong) Co., Limited

Research Institute of Highway Ministry of Transport

China National Institute of Standardization

Shell Internationale Research Maatschappij, B.v.

Xuan Zhang

Ming Han

Jinxun Wang

Ning Duan

Min Gong

Junchi Yan

Stephen Mingyu Chu

Yang Yang

Haiyang Zhang

Limin Xu

Jianwei Huang

Dehong Li

Xiaole Zhang

Chuanfeng Liu

Yu Zhang

Jian Zhang

Lei Li

Qiang Zhang

Liang Wang

Peng Chen

Jing Zhao

Tao Yang

Wei Song

Fan Zhang

Xi Ning Wang

Lin Liu

Yi Qin Yu

Ling Tong

Mohammed Abdullah Bataweel

Zhao Liu

Tan Jiang

Xiufeng Han

Bo Ma

Hongxia Yang

Gang Wu

Kang Chen

Yong Yao

Yang Che

Jose I Rueda

Dongqing Cao

Tianyu Xu

Xue Xiang Cui

Yaorong Liu

Jian Hou

Yonghong Zhang

Chongbang Xu

Fusen Xiao

Sen Hu

Caihua Wan

Ziyuan Qi

Yirong Zhang

Zenghong Li

Jiancheng Wang

Xiaojing Gao

Guangrong Zhang

Qi Ran

Shirong Zhang

Qi Liao

Han Liang

Xiaomin Lu

Sungho Kim

Wenbing Dai

Youlin Qin

Xiaohong Yang

Siming Guo

Jiansheng Li

Wenkang Chen

Lichun Cai

Jianbo Cheng

Zhijun Yang

Linjian Wan

Yilun Xu

Lei Cao

Yaofeng Zhang

Zhan Liu

Wenxing Ding

An energy spectrum-dose measuring method and device is provided. The method includes: performing energy calibration on a spectrometer using a standard radiation source to obtain a conversion relation between a channel and an energy, where the conversion relation is represented by a calibration factor; measuring ray peaks of n radiation sources with different energies, and dividing energy of an obtained energy spectrum into n regions; performing spectrum collection on the n radiation sources according to the n regions to obtain n net energy spectra subjected to the energy calibration through the calibration factor; performing dose measurement on the n radiation sources sequentially to obtain n dose rates corresponding to the n net energy spectra; calculating a relationship between counting rates of the radiation sources in the n regions and corresponding dose rates; and calculating a full-spectrum dose rate according to a current dose rate of each region.

Energy spectrum-dose measuring method and device

Disclosed are a method and system for calibrating an ergonomic digital human based on a digital standard human. By collecting and analyzing appearance data and action data of an ergonomic digital human, the present disclosure makes the ergonomic digital human more life-like in appearance and action. By collecting and analyzing expression data and voice data, the present disclosure enables the digital human to have more authentic expression and voice and express various emotional states more accurately, thereby enhancing emotional communication and interaction with the user. By collecting and analyzing interaction data, the present disclosure improves interaction accuracy and response speed of the ergonomic digital human. By optimizing ergonomic calibration of the ergonomic digital human, the present disclosure improves action accuracy when the ergonomic digital human executes an interaction task and reduces an error rate of interaction, such that a better user experience is available in different interaction scenarios.

Method and system for calibrating ergonomic digital human based on digital standard human

A nuclide identification method, a system and an electronic device are provided, which relates to the field of nuclide identification. According to statistical characteristics, a background probability density function and a Compton probability density function in a ROI are determined. An energy Bayesian factor and a time Bayesian factor are determined based on energy and time interval information in a sequence of the nuclear detection events obtained by measurement. By combining the two factors, Compton plateau can be effectively identified and distinguished.

Nuclide identification method, system and electronic device

Provided is a quaternary ammonium surfmer and copolymers thereof. The surfmer may have the following general formula (I): N—RRRR(X), where: Rand Rmay independently be H or a C-Calkyl, Rmay be a Camidoalkyl group, Rmay be a C-Calkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer, copolymers thereof, and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer or copolymers thereof into the subterranean formation.

Synthesis of a cationic surfmer and its copolymers for enhanced oil recovery

Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.

Preparation of cationic surfactants

Provided herein are KRN2 gene controlling kernel row number in plant, molecular markers closely linked to KRN2 and their application in molecular breeding.

Maize geneand uses thereof

Copolymer compositions and methods of making copolymer compositions with enhanced stability in high temperature and high salinity environments. The copolymers include hydrophobic monomers and sulfonated monomers. The sulfonated monomers can include 2-acrylamido-2-methylpropane sulfonic acid and allyl sulfonate. The sulfonated monomers increase the stability of the polymers in harsh conditions, and in high temperature, high salinity environments. The sulfonated monomers also reduce or prevent the hydrolysis of acrylamide groups, and therefore enhance the stability of the copolymer. The copolymer compositions can be made with free radical polymerization and an initiation complex.

Sulfonated polymer

A surfactant composition is provided. The composition includes chemical structure represented by Formula (1): where Rrepresents a hydrocarbon group, a substituted hydrocarbon group, an alkyl ester group, or an alkyl amine having from 4 to 28 carbon atoms, and Rand Rrepresent hydrocarbon groups having from 1 to 5 carbon atoms. Also provided is a composition including a brine comprising a total salinity of at least 20,000 mg/L and the chemical structure shown in Formula (1). Methods of making a composition including the chemical structure represented by Formula (1) are also provided.

Composition and method of making cationic surfactants with two quaternary ammonium head groups

A composition includes an ionic liquid monomer having the following structure: where n is an integer from 1 to 5 and the ionic liquid monomer has a melting point less than 100&#xb0; C. A method of making the ionic liquid includes providing a mixture comprising a sulfonic acid and a diamine in a solvent, and maintaining the mixture at a temperature ranging from 10 to 80&#xb0; C. for a time ranging from 1 to 10 hours to form an ionic liquid monomer having a melting point less than 100&#xb0; C. A method of making a polymer from the ionic liquid monomer is also provided.

Ionic liquid monomer for synthesis of friction reducer and methods thereof

Provided is a quaternary ammonium surfmer, that may have the following general formula (I): N&#x2014;RRRR(X), where: Rand Rmay independently be H or a C-Calkyl, Rmay be a Camidoalkyl group, Rmay be a C-Calkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer into the subterranean formation.

Provided is a method for analyzing the expansive stress and expansive strain of tunnel surrounding rock, including: (1) determining the surrounding rock state of the tunnel surrounding rock before expansion and the surrounding rock state after expansion; (2) according to the determined state of the surrounding rock, determining the expansive stress and expansive strain of the tunnel surrounding rock before expansion, and determining the expansive stress and expansive strain of the tunnel surrounding rock after expansion; (3) according to the surrounding rock state of the tunnel surrounding rock after expansion, determining the expansive deformation radius of the tunnel surrounding rock, so as to determine the expansive deformation displacement of the tunnel surrounding rock.

Method for analyzing the expansive stress and expansive strain of tunnel surrounding rock

Displaying recommendation information is disclosed including determining, based on touch hot zones of a user, a target display position for recommended information, the touch hot zones of the user being obtained based on historical touch behavior data of the user, and displaying the recommended information in the target display position.

Method and system for displaying recommendation information

Growing community of inventors

Beijing, China

Xuan Zhang