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Journal of Environmental Sciences 1989年第2期1卷 69-75页

作者： Xu liqiang, shen Wangxing and Zhu Jingfang Shanghai Institute of Metallurgy,Academia Sinica,Shanghai 200050,China

A closed-vessel microwave digestion method is described for the rapid dissolution of environmental samples such as foods, soils and sediments. Depending on the sample type, 0.1-0.2 g sample was decomposed with HNO3/H2O2 or HNO3 / H2O2/HF acid mixture in a PTFE digestion vessel by using microwave heating for 2-3 min at 500W of microwave power. The solution, or to which 0.5 g of boric acid was added, was diluted to 25-50 ml and directly determined by sequential ICP-AES. The accuracy of the procedure was validated by the analysis of six standard reference materials for 10 elements. Ail results were in a good agreements with the certified values.

关键词： microwave digestion environmental sampl sequential ICP-AES elemental analysis.

Nickel phosphorous trisulfide:A ternary 2D material with an ultra-low coefficient of friction

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Friction 2024年第10期12卷 2313-2324,F0004页

作者： Haoyu DENG Tongtong YU Changhe DU Ruilin shen Yongkang ZHAO Xinjian HE Yange FENG liqiang ZHANG Daoai WANG State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China

Ultra-low friction is crucial for the anti-friction,anti-wear,and long-life operation of ***,very few two-dimensional materials can achieve ultra-low friction,and they have some limitations in their ***,exploring novel materials with ultra-low friction properties is greatly *** emergence of ternary two-dimensional materials has opened new opportunities for nanoscale ultra-low *** study introduced nickel phosphorous trisulfide(NiPS3,referred to as NPS),a novel two-dimensional ternary material capable of achieving ultralow friction in a vacuum,into the large nanotribology ***-size and high-quality NPS crystals with up to 14 mm×6 mm×0.3 mm dimensions were grown using the chemical vapor transport *** NPS nanosheets were obtained using mechanical *** dependence of the NPS nanotribology on layer,velocity,and angle was systematically investigated using lateral force ***,the coefficient of friction(COF)of NPS with multilayers was decreased to about 0.0045 under 0.005 Pa vacuum condition(with load up to 767.8 nN),achieving the ultra-low friction *** analysis of the frictional dissipation energy and adhesive forces showed that NPS with multilayers had minimum frictional dissipation energy and adhesive forces since the interlayer interactions were weak and the meniscus force was excluded under vacuum *** study on the nanoscale friction of a ternary two-dimensional material lays a foundation for exploring the nanoscale friction and friction origin of other two-dimensional materials in the future.

关键词： two-dimensional(2D)materials NiPS3 ultra-low friction nanotribology

商业银行联动营销的瓶颈与对策:基于内部博弈行为的分析

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上海金融 2011年第4期 99-104页

作者：沈立强中国工商银行上海市分行

商业银行的分支机构和业务部门往往是依照客户的核心需求来设置的,它们无法独立满足客户的综合需求,需要开展联动营销。为实现自身利益的最大化,各分支机构和业务部门容易采取不联动的行为,这降低了商业银行的整体竞争力。通过博弈分析... 详细信息

商业银行的分支机构和业务部门往往是依照客户的核心需求来设置的,它们无法独立满足客户的综合需求,需要开展联动营销。为实现自身利益的最大化,各分支机构和业务部门容易采取不联动的行为,这降低了商业银行的整体竞争力。通过博弈分析可以发现,短期行为是导致不联动的根源。采用培养长期意识、增加联动机会、增强联动频次的不确定性、提高联动者的收益等手段,可以有效推进联动营销,提高银行收益和部门收益。在此基础上,本文从思想认识、机制设计、计划指标、产品组合、联动频率、激励方式等方面,提出推进联动营销的相关建议。

关键词：核心需求辅助需求主动联动营销协同联动营销短期行为

An ultrathin and crack-free metal-organic framework film for effective polysulfide inhibition in lithium-sulfur batteries

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Interdisciplinary Materials 2024年第2期3卷 306-315页

作者： Cheng Zhou Chenxu Dong Weixiao Wang Yu Tian Chunli shen Kaijian Yan liqiang Mai Xu Xu International School of Materials Science and Engineering Wuhan University of TechnologyWuhanHubeiPeople's Republic of China Department of Chemical Engineering University of Massachusetts AmherstAmherstMassachusettsUSA

Due to their extensive microporous structure,metal-organic frameworks(MOFs)find widespread application in constructing modification layers,functioning as ion ***,the modification layers prepared by existing methods feature gaps between MOFs that are noticeably larger than the inherent MOF pore *** and lithium ions unavoidably permeate through these gaps,hindering the full exploitation of the structural ***,an ultrathin(20 nm)and crack-free MOF film is formed on the separator by atomic layer deposition for the first *** on the separator,the mechanism of different MOF layers has been verified by phase field simulation and in situ Raman *** results accurately prove that the MOF particle layer can relieve the shuttle of polysulfides,but it does not have the effect of homogenizing lithium *** the ultrathin and crack-free MOF film with proper pore size can act as the ion sieve for both polysulfides and lithium *** a result,under the test condition of 2mA cm^(-2)-2 mAh cm^(-2),the overpotential of the Li/Li symmetric battery is only 18 mV after 2500 *** capacity retention rate of the lithium-sulfur battery is 95.6% after 500 cycles and 80% after 1000 cycles at 2 C.

关键词： crack-free film ion sieve lithium-sulfur battery metal-organic framework separator

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商业银行支持现代服务业发展的系统学解释

上海金融 2010年第9期 17-21页

作者：沈立强中国工商银行上海市分行

本文基于系统科学观点,建立一个基本的现代服务业概念分析框架,从有序演化的视角论述经济转型中商业银行的角色定位。以成长度为自组织效应量度,建立现代服务业系统自组织演化模型,并给出有利于系统演化的三个条件。在回顾上海银行业支... 详细信息

本文基于系统科学观点,建立一个基本的现代服务业概念分析框架,从有序演化的视角论述经济转型中商业银行的角色定位。以成长度为自组织效应量度,建立现代服务业系统自组织演化模型,并给出有利于系统演化的三个条件。在回顾上海银行业支持现代服务业实践基础上,论述上海现代服务业发展为商业银行带来的业务机会和发展空间。结合存在的问题和面临的机遇,给出上海银行业在经济转型中的战略定位,提出商业银行经营转型的过程化目标和具体举措。

关键词：商业银行经营转型现代服务业系统科学

Genesis of the Shijia Gold Deposit， Jiaodong Peninsula， China: Constraints from Fluid Inclusions and Stable Isotopes

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Journal of Earth Science 2024年

作者： liqiang Feng Ruiwen shen Xuexiang Gu Yongmei Zhang Zhanlin Ge Yingshuai Zhang Yu He Natural Resources Comprehensive Survey Command Center China Geological Survey Ha'erbin Natural Resources Survey Command Center China Geological Survey School of Earth Sciences and Resources， China University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources， China University of Geosciences Beijing Xi'an Mineral Resources Survey Center China Geological Survey Department of Natural Resources of Liangshan Yi Autonomous Prefecture

The Shijia gold deposit， situated in Penglai City， Shandong Province， is distinguished by its fracture-filling auriferous quartz-sulfide veins. Studies of fluid inclusions and stable isotopes （H-O-C-S） were conducted on this deposit， revealing that the auriferous quartz primarily contains four types of fluid inclusions: CO2-H2O inclusions， pure CO2inclusions， two-phase aqueous inclusions， and solid mineral-bearing multiphase inclusions. The ore-forming fluids of Shijia belong to a heterogeneous H2O-CO2-NaCl system， characterized by moderate to high temperatures （187–386 ℃）， low to high salinities (0.2%–41.2% NaCleq)， and low densities (0.72–1.07 g/cm3). Fluid immiscibility and fluid-rock interaction may have occurred at Shijia， with mineralization depths ranging from 3.3 to 3.9 km. The δD and δ18OH2Ovalues of auriferous quartz vary from -86.1‰ to -79.1‰ and from 9.4‰ to 10.5‰， respectively， suggesting that the ore-forming fluids are of magmatic origin. Carbon isotope compositions of the hydrothermal calcite （-3.31‰ to -0.86‰） indicate the carbon might be related to a mantle source that was contaminated by marine carbonates. The positive δ34S values of sulfides （4.3‰–7.3‰） reflect that the ore-forming materials may be sourced from the metasomatized lithospheric mantle beneath the North China Craton， related to the subduction of the Yangtze Craton in the Triassic. Collectively， the evidence from geology， fluid inclusion and H-O-C-S isotopes indicate that the Shijia gold deposit is of magmatic-hydrothermal origin and related to the Guojialing granite formed by the mixing of crust- and mantle-derived magmas.

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Structural basis for transcription initiation by E. coli σE

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Structural basis for transcription initiation by E. coli σE

基于高分辨率遥感图像的荔枝林树冠信息提取方法研究

中国生物化学与分子生物学会第十二届全国会员代表大会暨2018年全国学术会议

作者： Chengli Fang Lingting Li liqiang shen Jing Shi Yu Feng Yu Zhang Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Biochemistry and Molecular Biology School of MedicineZhejiang University

Bacterial RNAP uses extra-cytoplasmic function(ECF) σ factors to regulate gene *** σ is a well-studied and vital ECF σ factor,which controls expression of a set of genes in response to various environmental and cellular events causing cell-envelop ***,it remains elusive how σ interacts with RNAP core enzyme,and how the σ-RNAP holoenzyme initiates transcription of its regulated *** this study,we have determined a cryo-EM structure of *** complex comprising σ(*** σ-RPo).The structure revealskey interactions essential for assembly of σ-RNAP holoenzyme and for promoter recognition and ***,the structure shows that the non-conserved linker region connecting N-terminal and C-terminal domains(σ2/σ4 linker) of σ threads into the active-center cleft and exits through the RNA exit *** bioinformatic,biochemical,and structural analysis suggest that the highly divergent σ2/σ4 linker of ECF σ factors probably interact with RNAP in the same mode and plays essential roles during transcription initiation.

关键词： RNA polymerase Extra-Cytoplasmic Function σ factors transcription initiation promoter recognition

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农业机械学报 2016年第9期47卷 17-22页

作者：姜仁荣汪春燕沈利强王培法深圳市规划国土发展研究中心深圳518040 国土资源部城市土地资源监测与仿真重点实验室深圳518040 南京信息工程大学地理与遥感学院南京210044

为有效提取荔枝林树冠信息,解决局部最大值法窗口选择和区域生长法在树冠相互连接时的过度生长问题,将水文分析和区域生长融合方法用于荔枝单木探测和树冠描绘。首先将均值滤波方法平滑后的全色图像进行反转完成图像预处理;然后对预处... 详细信息

为有效提取荔枝林树冠信息,解决局部最大值法窗口选择和区域生长法在树冠相互连接时的过度生长问题,将水文分析和区域生长融合方法用于荔枝单木探测和树冠描绘。首先将均值滤波方法平滑后的全色图像进行反转完成图像预处理;然后对预处理后图像提取洼地和洼地贡献区域,接着剔除错提洼地,合并树冠分支洼地的贡献区域,从而提取树顶位置,完成单木探测;最后以单木探测结果为种子点,采用区域生长方法对树冠进行描绘,种子生长被限定在洼地贡献区域内,在阈值控制下进行生长,最终完成单木树冠描绘。采用遥感分类精度评价指标对提取结果进行评价,单木探测总体精度为87.75%,用户精度为80.69%,生产者精度为96.06%;单木树冠描绘总体精度为78.69%,用户精度为71.32%,生产者精度为87.76%。

关键词：荔枝高分辨率遥感图像单木探测单木树冠描绘水文分析区域增长

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射频流盘技术在中短波广播信号监测中的应用

电子科学技术 2016年第6期3卷 722-725页

作者：沈利强国家新闻出版广电总局二O一台新疆昌吉831100

本文详细介绍射频流盘、射频重现、射频识别的概念和系统结构,讨论射频识别、射频流盘在中短波广播信号监测领域应用,实现射频识别、射频信号大数据存储、射频信号重现技术等突破性功能,提高了传统中短波广播监测效率,结合宽带频谱监测... 详细信息

本文详细介绍射频流盘、射频重现、射频识别的概念和系统结构,讨论射频识别、射频流盘在中短波广播信号监测领域应用,实现射频识别、射频信号大数据存储、射频信号重现技术等突破性功能,提高了传统中短波广播监测效率,结合宽带频谱监测技术对传统的信号监测模式进行优化和改进。

关键词：射频流盘射频识别信号采集解调软件无线电

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基于云计算技术的无线数字电视监测系统

中国有线电视 2023年第2期 9-12页

作者：沈利强国家广播电视总局二〇一台新疆昌吉831100

随着科学技术的创新和发展,广播电视信号从模拟化转向数字化,当前国家积极推动的中央无线数字化覆盖工程在各地区陆续实施,无线数字电视得到快速发展。截止2021年国家陆续停止模拟电视发射任务,无线数字电视已成为新的广播电视传播形态... 详细信息

随着科学技术的创新和发展,广播电视信号从模拟化转向数字化,当前国家积极推动的中央无线数字化覆盖工程在各地区陆续实施,无线数字电视得到快速发展。截止2021年国家陆续停止模拟电视发射任务,无线数字电视已成为新的广播电视传播形态,加强无线数字电视安全播出和内容监管,已成为各级广播电视监管部门的重点任务。结合云计算及大数据等技术,探讨了大数据和云计算技术在无线数字电视监测系统中的应用,展望了该技术未来发展趋势。

关键词：无线数字电视云计算大数据监测