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Conductive Metal/Covalent Organic Frameworks for CO_(2. Electroreduction

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chinese Journal of Structural Chemistry 2022年第5期41卷 1-14页

作者： Chang-Pu Wan Jun-Dong Yi rong Cao yuan-Biao {2. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of chinese Academy of sciences Beijing 100049China School of Chemistry and Materials Science Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)University of Science and Technology of ChinaHefei 230026China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of china Fuzhou 350108China

Porous crystalline metal-organic frameworks(MOFs)and covalent organic frameworks(COFs)are promising platforms for electrocatalytic reduction of CO_(2.(CO_(2.RR)due to their large CO_(2.adsorption uptakes and periodically arranged single active ***,the applications in CO_(2.RR of the traditional MOFs and COFs are greatly limited by their low electron *** recent years,numerous types of MOFs and COFs with high intrinsic conductivity have been rationally designed and successfully constructed,and some of them have been applied in CO_(2.*** this review,the applications of conductive MOFs and COFs in CO_(2.RR have been *** conductive MOFs and COFs can be categorized according to the methods,in which the conductivity is enhanced,such as constructing fullyπ-conjugated backbones,donor-acceptor heterojunction,enhancing theπ-πstacking interactions between organic moieties and/or the introduction of guest molecules.

关键词： metal-organic frameworks covalent organic frameworks CO_(2.electroreduction reaction conductive frameworks

A Robust Self-healing Polyurethane Elastomer Enabled by Tuning the Molecular Mobility and Phase Morphology through Disulfide Bonds

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chinese Journal of Polymer Science 2021年第10期39卷 1299-1309,I0007页

作者： hai-Tao Wu Bi-Qiang Jin Hao Wang Wen-Qiang Wu Zhen-Xing Cao Zhao-Yang yuan Yue {2. Wei-Hang Li Guang-Su {2. Lu-Sheng Liao Jin-rong Wu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineerngSichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Natural Rubber Processing Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural SciencesZhanjiang 524001China

Elastomers with outstanding strength,toughness and healing efficiency are highly promising for many emerging ***,it is still a challenge to integrate all these beneficial features in one ***,an asymmetric alicyclic structure adjacent to aromatic disulfide was tactfully introduced into the backbone of polyurethane(PU)***,such elastomer(PU-HPS)was fabricated by polycondensing polytetramethylene ether glycol(PTMEG),isophorone diisocyanate(IPDI)and p-hydroxydiphenyl disulfide(HPS)via one-pot *** molecular mobility and phase morphology of PU-HPS can be tuned by adjusting the HPS ***,the dynamic exchange of hydrogen and disulfide bonds in the hard segment domains can also be *** optimized sample manifests outstanding tensile strength(46.4 MPa),high toughness(109.1 MJ/m^(3)),high self-healing efficiency after fracture(90.3%),complete scratch recovery(100%)and good puncture ***,this work provides a facile strategy for developing robust self-healing polymers.

关键词： Self-healing Polyurethane Disulfide bonds Chain mobility Phase morphology

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中国4类含糖预包装食品糖含量分析

中国健康教育 2024年第9期40卷 769-772页

作者：郭海军李园郭春雷黄绯绯张普洪乔治全球健康研究院(澳大利亚)北京代表处北京100600 中国学生营养与健康促进会北京100031 中国疾病预防控制中心营养与健康所北京100050

目的分析中国市场上销售的乳制品、糖果、烘焙制品和非酒精饮料4类预包装食品的糖含量,为促进零食的健康选择提供建议。方法采用2.17—2.2.年食先知中国数据,根据英国式红绿灯标准评估糖含量处于低(绿色)、中(黄色)、高(红色)水平的... 详细信息

目的分析中国市场上销售的乳制品、糖果、烘焙制品和非酒精饮料4类预包装食品的糖含量,为促进零食的健康选择提供建议。方法采用2.17—2.2.年食先知中国数据,根据英国式红绿灯标准评估糖含量处于低(绿色)、中(黄色)、高(红色)水平的预包装食品比例,分析每份食品糖含量占每日推荐摄入量的百分比,采用χ^(2.检验比较不同食品类别间的糖含量构成差异,糖含量用中位数及四分位数描述。结果 4类预包装食品共计4872.,糖含量中位数为9.5 g,糖果的糖含量中位数为43.0g/100 g,烘焙制品的糖含量为16.1g/100 g。68.2.的糖果的糖含量处于红色水平。82.7%的冰激凌、71.6%的巧克力糖果的含糖量是红色水平,同类食品中占比最高。按照份量标准核算,非酒精饮料糖含量(18.0 g)则最高,达到了推荐糖摄入量的36.0%。结论 4类含糖预包装食品的糖含量存在较大差异,糖果的红色水平糖含量占比最高,而每份非酒精饮料糖含量最高。需要对健康选择预包装食品提供科学指导。

关键词：糖预包装食品评价

10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang Li Li‑Jiao Wang Jing‑Yu Tang Xiang‑Biao Qiu Zhen Chen Mao‑yuan Zhao Chang‑Jun Ning Kai Pan Wei Xu Tao Li Su‑Peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng rong Zhang Xiao‑Yang Sun Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Yong‑Hao Chen Zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑Cheng He Yang Hong Yi‑Wei Hu Han‑Xiong {2. Wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Gong Li Xiao Li Yang Li Jie Liu rong Liu Shu‑Bin Liu Yi‑Na Liu Guang‑yuan Luan Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Kang Sun Zhi‑Xin Tan Sheng‑Da Tang Jin‑Cheng Wang Peng‑Cheng Wang Zhao‑Hui Wang Zhong‑Wei Wen Xiao‑Guang Wu Xuan Wu Cong Xia Yong‑Ji Yu Guo‑Hui Zhang Hang‑Chang Zhang Lin‑Hao Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑Liang Zhang Yue Zhang Zhi‑Yong Zhang Zhi‑Hao Zhou Ke‑Jun Zhu Chong Zou institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision Science and Technology(Nanjing)Research institute Co.Ltd Nanjing 211106China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China china Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026China Northwest institute of Nuclear Technology Xi’an 710024China University of chinese Academy of sciences Beijing 100049China china Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the china Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification

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高压阀门压力自密封结构设计与分析

石油化工设备 2024年第6期53卷 48-51页

作者：缪克在吴超俊孙志民李海聪黄俊荣浙江省泵阀产品质量检验中心浙江温州325105 中国特种设备检测研究院北京100029

压力自密封结构在高压阀门中应用广泛,但缺少对其整体与各部件的系统性校核验算。介绍了高压阀门压力自密封结构涉及的产品设计标准、结构原理与设计特征,较完整地阐述了组成高压阀门压力自密封结构的阀体颈部、阀盖、间隔环、分段支撑... 详细信息

压力自密封结构在高压阀门中应用广泛,但缺少对其整体与各部件的系统性校核验算。介绍了高压阀门压力自密封结构涉及的产品设计标准、结构原理与设计特征,较完整地阐述了组成高压阀门压力自密封结构的阀体颈部、阀盖、间隔环、分段支撑环、密封垫等关键部件及接触面的强度计算与应力分析,可为高压阀门压力自密封结构的设计与验证、承受最低应力提供技术指导,以提高压力自密封结构的安全完整性和密封可靠性。

关键词：阀门高压压力自密封结构设计强度应力

复杂抗生素多黏菌素E甲磺酸钠的组分与杂质谱研究及在质量控制中的应用

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药物分析杂志 2024年第1期44卷 116-125页

作者：李宣黄敏文施海蔚胡楠周杰杭太俊袁耀佐江苏省食品药品监督检验研究院南京210008 国家药品监督管理局化学药物杂质谱研究重点实验室南京210008 中国药科大学分析教研室南京210009 安捷伦科技中国有限公司北京100102 江苏正大天晴药业集团股份有限公司连云港222062

目的:建立二维液质联用方法确定多黏菌素E甲磺酸钠(CMS)杂质的结构及来源,进而用于药物质量控制研究。方法:一维系统:采用Acquity UPLC~?Peptide CSH C_(18)(150 mm×2.1 mm, 1.7μm)色谱柱,以磷酸盐缓冲液(7.8 g·L^(-1)磷酸二氢钠,用1... 详细信息

目的:建立二维液质联用方法确定多黏菌素E甲磺酸钠(CMS)杂质的结构及来源,进而用于药物质量控制研究。方法:一维系统:采用Acquity UPLC~?Peptide CSH C_(18)(150 mm×2.1 mm, 1.7μm)色谱柱,以磷酸盐缓冲液(7.8 g·L^(-1)磷酸二氢钠,用1 mol·L^(-1)氢氧化钠溶液调节pH至6.4)-乙腈(19∶1)为流动相A,磷酸盐缓冲液-乙腈(1∶1)为流动相B,梯度洗脱,流速0.3 mL·min^(-1),柱温30℃;二维系统:采用Acquity BEH C_(18)柱(50 mm×2.1 mm, 1.7μm)色谱柱,以甲酸铵(A)-乙腈(B)为流动相,梯度洗脱,流速0.2.mL·min^(-1),柱温40℃,检测波长2.0 nm。质谱检测器采用ESI源,负离子扫描模式。结果:采用2.-LC-Q TOF MS法,推定了CMS中55个杂质的结构,并推测其主要来源为多黏菌素E1-I、多黏菌素E1-7MOA、多黏菌素E3及多黏菌素E6。结论:利用二维液质联用技术推定CMS中杂质峰的结构及来源,并用来评价不同厂家、生产工艺的原料药中杂质含量变化,有利于改进生产工艺,从源头控制药物质量。

关键词：多黏菌素类抗生素多黏菌素E甲磺酸钠组分及杂质二维液质联用技术结构推定质量控制

Quantitative Determination of Adrenaline Hydrochloride Injection and Noradrenaline Bitartrate Injection by a New HPLC Method via Substitute for Reference Substance

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Chemical Research in chinese Universities 2009年第4期25卷 433-438页

作者： XIE yuan-chao huang {2.-wei ZHANG Qi-ming JIN Shao-hong Department of Pharmaceutical Analysis China Pharmaceutical University Nanjing 210009 P. R. China Shandong Provincial institute for Drug Control Jinan 250101 P. R. China National institute for Control of Pharmaceutical and Biological Products Beijing 100050 P. R. China

An HPLC method for quantitative determination of adrenaline hydrochloride injection and noradrenaline bitartrate injection was established and validated with a substitute for the reference *** hydrochloride was selected as the substitute for the reference substance of adrenaline and noradrenaline *** correction factor of phenylephrine hydrochloride with respect to the reference substance of adrenaline and noradrenaline bitartrate was determined under defined *** hydrochloride injection and noradrenaline bitartrate injection were quantified by assaying phenylephrine hydrochloride and a correct *** results indicate that the HPLC method with the substitute for reference substance was reliable and feasible for quantitative determination of drugs.

关键词： Substitute for reference substance Correction factor Adrenaline Noradrenaline bitartrate Phenylephrine hydrochloride HPLC

Threshold-independent method for single-shot readout of spin qubits in semiconductor quantum dots

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chinese Physics B 2024年第1期33卷 274-279页

作者：胡睿梓祝圣凯张鑫周圆倪铭马荣龙罗刚孔真真王桂磊曹刚李海欧郭国平 CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Microelectronics Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China beijing Superstring Academy of Memory Technology Beijing 100176China Origin Quantum Computing Company Limited Hefei 230026China

The single-shot readout data process is essential for the realization of high-fidelity qubits and fault-tolerant quantum algorithms in semiconductor quantum dots. However, the fidelity and visibility of the readout process are sensitive to the choice of the thresholds and limited by the experimental hardware. By demonstrating the linear dependence between the measured spin state probabilities and readout visibilities along with dark counts, we describe an alternative threshold-independent method for the single-shot readout of spin qubits in semiconductor quantum dots. We can obtain the extrapolated spin state probabilities of the prepared probabilities of the excited spin state through the threshold-independent method. We then analyze the corresponding errors of the method, finding that errors of the extrapolated probabilities cannot be neglected with no constraints on the readout time and threshold voltage. Therefore, by limiting the readout time and threshold voltage, we ensure the accuracy of the extrapolated probability. We then prove that the efficiency and robustness of this method are 60 times larger than those of the most commonly used method. Moreover, we discuss the influence of the electron temperature on the effective area with a fixed external magnetic field and provide a preliminary demonstration for a single-shot readout of up to 0.7K/1.5T in the future.

关键词： quantum computation quantum dot quantum state readout

Asymmetry of Salinity Variability in the Tropical Pacific during Interdecadal Pacific Oscillation Phases

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Advances in Atmospheric sciences 2023年第7期40卷 1269-1284页

作者： hai ZHI Zihui YANG rong-Hua ZHANG Pengfei LIN Jifeng QI Yu {2. Meng DONG College of Atmospheric sciences Nanjing University of Information Science and TechnologyNanjing 210044China School of Marine sciences Nanjing University of Information Science and TechnologyNanjing 210044China Laoshan Laboratory Qingdao 266237China State Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric Physics(IAP)Chinese Academy of SciencesBeijing 100029China Key Laboratory of Ocean Circulation and Waves Institute of Oceanologyand Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China

It has been recognized that salinity variability in the tropical Pacific is closely related to the Interdecadal Pacific Oscillation(IPO).Here,we use model simulations from 1900 to 2.17 to illustrate obvious asymmetries of salinity variability in the tropical Pacific during positive and negative IPO *** amplitude of salinity variability in the tropical Pacific during positive IPO phases is larger than that during negative IPO phases,with a more westward shift of a large Sea Surface Salinity(SSS)anomaly along the *** budget analyses show that the asymmetry of salinity variability during positive and negative IPO phases is dominated by the difference in the surface forcing associated with the freshwater flux[FWF,precipitation(P)minus evaporation(E)],with a contribution of 40%–50%near the dateline on the ***,the relationships between the salinity variability and its budget terms also show differences in their leadlag correlations during positive and negative IPO *** differences in salinity variability during different IPO phases produce asymmetric effects on seawater density which can reduce or enhance upper-ocean ***,the salinity effects may modulate the intensity of El Nino-Southern Oscillation(ENSO),resulting in an enhanced(reduced)El Nino but a reduced(enhanced)La Ni?a during positive(negative)IPO phases by 1.6℃psu^(-1)(1.3℃psu^(-1)),*** is suggested that the asymmetry of salinity variability may be related to the recent change in ENSO amplitude associated with the IPO,which can help elucidate ENSO diversity.

关键词： salinity variability asymmetry upper-ocean stratification Interdecadal Pacfic Oscillation tropical Pacific