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Micelles-template induced organic nanocrystals based on iodo…nitro interactions

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Chinese Science Bulletin 2007年第10期52卷 1307-1310页

作者： WANG jia ZHANG ZuoLun YE junwei ZHANG JingYingt WANG Yuet Key Laboratory for Supramolecular Structure and Materials of Ministry of Education College of Chemistry Jilin University Changchun 130012 China

The nanocrystals based on a polar organic compound INBP (4-iodo-4′-nitrobiphenyl) have been fabricated by reprecipitation approach. For the formation of INBP based nanocrystals, the intermolecular iodo…nitro interaction is the dominant driving force and the micelles formed by the surfactant CTAB (cetyltrimethylammonium bromide) molecules are the efficient templates for controlling morphologies of nanocrystals. The field emission scanning electro microscope (FESEM) images demonstrated that prism-like and needle-like nanocrystals of INBP were formed in pure water and micell containing aqueous solution, respectively. XRD pattern and UV/vis absorption spectra were employed to characterize the nanocrystals.

关键词：胶束-模板有机纳米晶合成碘…硝基相互作用

A new 3-D Gd–Cu heterometallic polymer [Gd_2Cu_3(bpy)_2-(ip)_6]·6H_2O with a non-interpenetrated α-Po net

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Chinese Science Bulletin 2009年第23期54卷 4272-4276页

作者： jia XiangLi ZHOU jian ZHAO junwei LI ZhaoHui ZHENG ShouTian YANG GuoYu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Fuzhou 350002 China College of Chemistry and Chemical Engineering Henan University Kaifeng 475000 China College of Chemistry and Chemical Engineering Fuzhou University Fuzhou 350002 China

A new 3-D porous Gd-Cu heterometallic polymer [Gd2Cu3(bpy)2(ip)6]·6H2O (1) (bpy = 2,2'-bipyridine, H2ip = isophthalic acid) has been hydrothermally synthesized and structurally characterized. Compound 1 crystallizes in the triclinic space group P1and displays a 3-D non-interpenetrated α-Po network with 1-D channels filled transversely by the hexa-nuclear chain-like (H2O)6. The EPR and thermal stability of 1 were investigated.

关键词：联吡啶聚合物 IP 铜钆水热合成间苯二甲酸知识产权

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转基因检测标准的方法验证工作研究

生物技术进展 2024年第1期14卷 120-124页

作者：章寅贾军伟白蓝陈一帆阮功成吕贝贝潘爱虎上海市农业科学院生物技术研究所上海市农业遗传育种重点实验室农业农村部农业转基因生物安全评价(环境)重点实验室农业农村部农作物生态环境安全监督检验测试中心(上海)上海201106 越南北江农林大学越南北江21000

转基因检测标准为转基因食品的有效标识、科学监管、推广应用提供重要的技术支撑。方法验证工作是指实验室通过一定的科学方法,验证上述转基因检测标准在实验室现有的人员、设备、场地环境等条件下是否可得到令人满意的结果。方法验证... 详细信息

转基因检测标准为转基因食品的有效标识、科学监管、推广应用提供重要的技术支撑。方法验证工作是指实验室通过一定的科学方法,验证上述转基因检测标准在实验室现有的人员、设备、场地环境等条件下是否可得到令人满意的结果。方法验证工作直接影响到标准的实施和应用,但现有的转基因检测标准的验证方法,大部分只提供了方法验证的定义,缺乏具体的操作方案。从验证工作的仪器设备、试剂及标准物质、技术验证参数、环境要求等关键要素进行讨论,提出相应的验证工作建议,旨在为农业转基因实验室开展方法验证提供详细的技术指导,并为我国转基因标准体系的应用推广提供参考。

关键词：转基因检测标准体系方法验证准确度重复性

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固定电源插座插拔力测量装置研究

计测技术 2013年第5期33卷 53-56页

作者：刘敬敏付茂岳郭凯贾军伟张书锋张明志北京东方计量测试研究所北京100029

在固定电源插座安全性检验过程中,插拔力是检验插座合格与否的重要评判内容之一。而目前,各计量机构主要使用的仍是支架配备砝码的测量设备。针对这种测量设备存在的诸多问题,本文介绍了一种手持式测试固定插座插拔力的测量装置,该装置... 详细信息

在固定电源插座安全性检验过程中,插拔力是检验插座合格与否的重要评判内容之一。而目前,各计量机构主要使用的仍是支架配备砝码的测量设备。针对这种测量设备存在的诸多问题,本文介绍了一种手持式测试固定插座插拔力的测量装置,该装置由测试插头、插拔力传感器和数字显示表三部分组成,并将各部分通过手持式外壳组装为一体,能够实时测量固定插座插拔力并实时显示。该套测量装置体积小,重量轻,携带方便,测试过程简单易操作、测量精度高,极大地节约了人力物力,提高了劳动效率和测量准确度。

关键词：固定电源插座插拔力手持式便携测量装置

Main Controlling Factors of CMB Reservoir in Northeast China:Taking Jixi Basin as An Example

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 465-466页

作者： XU Chengwu WANG Shihui TAN Baode WANG Youzhi LI jia GUO junwei Daqing oilfield exploration and Development Institute Daqing Heilongjiang 163712 Northeast Petroleum University Daqing City Heilongjiang Province 163318

1 Introduction The coal bearing basin in the east of Northeast China is many, and the little or middle fault depression of low or middle rank coal bearing basin is the main, including Jixi, Boli, Shuangyashan, Hegang, Hulin and other basins （TANG Shuheng, 2000）. Several coal bearing basins have seen well show of CBM（Tablel）. But the research of the coal bed gas system is not carried out at present.

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LIBS用于气溶胶分析的研究与应用进展

大气与环境光学学报 2016年第5期11卷 347-360页

作者：王华东倪志波付洪波贾军伟 Markus W.Sigrist 董凤忠中国科学院安徽光学精密机械研究所安徽合肥230031 中国科学技术大学安徽合肥230026 ETH Zvrich Institute for Quantum ElectronicsOtto-Stern-Weg 1CH-8093 ZurichSwitzerland

激光诱导击穿光谱(laser-inducedbreakdown spectroscopy,LIBS)技术作为一种多元素实时检测技术,已被众多研究者用于气溶胶成分的原位在线分析.对近年来LIBS技术应用于大气气溶胶的研究概况和进展进行了简要综述:简述了LIBS技术的原理... 详细信息

激光诱导击穿光谱(laser-inducedbreakdown spectroscopy,LIBS)技术作为一种多元素实时检测技术,已被众多研究者用于气溶胶成分的原位在线分析.对近年来LIBS技术应用于大气气溶胶的研究概况和进展进行了简要综述:简述了LIBS技术的原理与特点,分析了LIBS用于气溶胶检测的影响因素,总结了LIBS用于气溶胶分析的研究概况,并介绍了LIBS在大气环境及工业过程中的应用实例.

关键词：激光诱导击穿光谱气溶胶粒径分布重金属

Performance and stability analysis of SOFC containing thin and dense gadolinium-doped ceria interlayer sintered at low temperature

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Journal of Materiomics 2022年第2期8卷 347-357页

作者： Yige Wang Chuan jia Zewei Lyu Minfang Han junwei Wu Zaihong Sun Fumitada Iguchi Keiji Yashiro Tatsuya Kawada Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China Department of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen518055China Suzhou Huatsing Jingkun New Energy Technology Co.Ltd Jiangsu215314China Tohoku University Sendai 980-8579Japan

Gadolinium-doped ceria(GDC)interlayers are required to prevent the interfacial reaction between La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)cathode and Y_(2)O_(3)-stabilized ZrO 2(YSZ)electrolyte in solid oxide fuel cells(SOFCs).However,it's difficult to prepare a thin and dense GDC interlayer on the sintered half-cell at a low *** this study,the physical vapor deposition(PVD)method was employed to success-fully manufacture dense GDC interlayers with the thickness of 1 m *** influences of GDC sintering temperature(900℃,1000℃ and 1100℃)on cell performance characteristics and degradation behavior were *** cell with GDC interlayer sintered at 1100?C showed the lowest degradation rate during the 216-h *** best stability was attributed to the most effective inhibition of Sr diffusion by the GDC interlayer,which was demonstrated by the almost unchanged Ohmic and polari-zation resistances during the aging stage and the negligible Sr enrichment at YSZ/GDC *** to the conventional screen-printed GDC interlayers(sintered above 1250℃),the GDC inter-layer prepared by the PVD method and sintered at 1100℃ was significantly denser and thinner,showing a promising application prospect due to its benefits for cell stability.

关键词： Solid oxide fuel cell Gadolinium-doped ceria Interlayer Sr diffusion Stability analysis

Loss of life expectancy due to stroke and its subtypes in urban and rural areas in China,2005-2020

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Stroke & Vascular Neurology 2023年第5期8卷 349-357页

作者： Zixin Wang Wei Liu Yi Ren Chen Zhang jia Yang Lijun Wang Maigeng Zhou Peng Yin junwei Hao Qingfeng Ma Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijingChina National Center for Neurological Disorders BeijingChina National Center for Chronic and Non-communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina

Stroke is characterised by high mortality and disability rate in *** study aimed to explore the temporal trends in years of life lost(YLL)and loss of life expectancy due to stroke and its subtypes in urban and rural areas in China during *** were obtained from China National Mortality Surveillance *** life and stroke-eliminated life tables were generated to calculate loss of life *** YLL and loss of life expectancy due to stroke in urban and rural areas at both national and provincial level during 2005-2020 were *** China,the age-standardised YLL rate due to stroke and its subtypes were higher in rural areas than in urban *** YLL rate due to stroke showed a downward trend in both urban and rural residents from 2005 to 2020,decreased by 39.9%and 21.5%,*** of life expectancy caused by stroke decreased from 1.75 years to 1.70 years from 2005 to *** which,loss of life expectancy due to intracerebral haemorrhage(ICH)decreased from 0.94 years to 0.65 years,while that of ischaemic stroke(IS)increased from 0.62 years to 0.86 years.A slightly upward trend was observed in loss of life expectancy caused by subarachnoid haemorrhage(SAH),from 0.05 years to 0.06 *** of life expectancy due to ICH and SAH was always higher in rural areas than in urban areas,whereas that of IS was higher in urban areas than in rural *** males suffered the greatest loss of life expectancy due to ICH and SAH,while the highest loss of life expectancy caused by IS was found in urban ***,Heilongjiang(2.25 years),Tibet(2.17 years)and Jilin(2.16 years)were found to have the highest loss of life expectancy caused by stroke in *** of life expectancy caused by ICH and SAH was higher in western China,while the disease burden of IS was heavier in northeast *** remains a major public health problem in China,although the age-standardised YLL rate and loss of life expectancy due to stroke

关键词： urban expect tables

基于LIBS技术的渣选尾矿中铜元素的在线检测研究

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现代矿业 2024年第9期40卷 203-205,209页

作者：陈昊许进冯玉祥薛骅骎马志国潘从元郝泽飞贾军伟贾振杰张子明张兵白银有色集团股份有限公司选矿公司合肥金星智控科技股份有限公司

白银有色集团股份有限公司选矿公司为及时获知渣选尾矿中准确的铜元素含量,针对化验室取样分析方法存在取样代表性差、分析时间长等问题,采用基于LIBS技术的在线分析仪对铜尾矿中铜元素含量进行了在线检测应用研究。通过分析20个铜尾矿... 详细信息

白银有色集团股份有限公司选矿公司为及时获知渣选尾矿中准确的铜元素含量,针对化验室取样分析方法存在取样代表性差、分析时间长等问题,采用基于LIBS技术的在线分析仪对铜尾矿中铜元素含量进行了在线检测应用研究。通过分析20个铜尾矿样品中铜元素含量化验室离线检测值与在线检测值,结果表明,平均绝对偏差为0.014%,平均相对偏差为4.79%,线性相关性R^(2)可达0.959以上,满足铜尾矿铜回收率的判断需要,可为铜熔炼渣浮选加工提供指导。

关键词： LIBS 铜尾矿铜元素在线检测