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Opto-Electronic Advances 2024年第7期7卷 17-26页

作者： Yuran Huang Zhimin Zhang Wenli Tao Yunfei Wei Liang xu Wenwen Gong jiaqiang Zhou Liangcai Cao Yong Liu Yubing Han Cuifang Kuang xu Liu State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Research Center for Intelligent Chips and Devices Zhejiang LabHangzhou 311121China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Department of Endocrinology and Metabolism Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Department of Precision Instruments Tsinghua UniversityBeijing 100084China College of electronics and information engineering Shanghai University of Electrical PowerShanghai 200090China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311200China

Stimulated emission depletion microscopy(STED)holds great potential in biological science applications,especially in studying nanoscale subcellular ***,multi-color STED imaging in live-cell remains challenging due to the limited excitation wavelengths and large amount of laser ***,we develop a multiplexed live-cell STED method to observe more structures simultaneously with limited photo-bleaching and *** separating live-cell fluorescent probes with similar spectral properties using phasor analysis,our method enables five-color live-cell STED imaging and reveals long-term interactions between different subcellular *** results here provide an avenue for understanding the complex and delicate interactome of subcellular structures in live-cell.

关键词： optical nanoscopy phasor analysis multicolor live cell imaging

Electrochemical performance of LiFePO_4 cathode material for Li-ion battery

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Rare Metals 2006年第Z1期25卷 62-66页

作者： LI Shuzhong LI Chao FAN Yanliang xu jiaqiang WANG Tao YANG Shuting Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Chemical Engineering College of Chemistry and Environmental Science Henan Normal University Xinxiang 453007 China

In the search for improved materials for rechargeable lithium batteries, LiFePO4 offers interesting possibilities because of its low raw materials cost, environmental friendliness and safety. The main drawback with using the material is its poor electronic conductivity and this limitation has to be overcome. Here Al-doped LiFePO4/C composite cathode materials were prepared by a polymer-network synthesis technique. Testing of X-ray diffraction, charge-discharge, and cyclic voltammetry were carried out for its performance. Results show that Al-doped LiFePO4/C composite cathode materials have a high initial capacity, good cycle stability and excellent low temperature performance. The electrical conductivity of LiFePO4 material can be obviously improved by doping Al. The better electrochemical performances of Al-doped LiFePO4/C composite cathode materials have a connection with its conductivity.

关键词： lithium ion batteries LiFePO4 doping electrochemical performance

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重载图形图像的云原生并行超算技术

测绘地理信息 2024年第4期49卷 105-109页

作者：姚湘军易敏张焕辉范文一许家强沈方艺刘正才湖南天湘和信息科技有限公司湖南大学国家超级计算长沙中心湘潭大学土木工程学院

叙述了当代智慧城市建设中3S应用场景、实景三维建模与应用、建筑信息模型和云渲染应用产业等四大领域中的重载图形图像处理任务的现状和所面临的算力、存储和网络等资源需求上的挑战，分析了重载图形图像处理的瓶颈和特点，提出了重载... 详细信息

叙述了当代智慧城市建设中3S应用场景、实景三维建模与应用、建筑信息模型和云渲染应用产业等四大领域中的重载图形图像处理任务的现状和所面临的算力、存储和网络等资源需求上的挑战，分析了重载图形图像处理的瓶颈和特点，提出了重载图形图像处理的云原生并行超算技术的基本概念、研究策略和应用解决方案。

关键词：重载图形图像 GPU服务器网云原生并行超算

The trxG protein ULT1 regulates Arabidopsis organ size by interacting with TCP14/15 to antagonize the LIM peptidase DA1 for H3K4me3 on target genes

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Plant Communications 2024年第4期5卷 255-274页

作者： Fan xu Huixue Dong Weijun Guo Liang Le Yexing Jing Jennifer C.Fletcher jiaqiang Sun Li Pu Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Department of Plant and Microbial Biology University of CaliforniaBerkeleyBerkeleyCA 94720USA Plant Gene Expression Center United States Department of Agriculture-Agricultural Research ServiceAlbanyCA 94710USA These authors contributed equally to this article

Plant organ size is an important agronomic trait that makes a significant contribution to plant *** its central importance,the genetic and molecular mechanisms underlying organ size control remain to be fully ***,we report that the trithorax group protein ULTRAPETALA1(ULT1)interacts with the TEOSINTE BRANCHED1/CYCLOIDEA/PCF14/15(TCP14/15)transcription factors by antagonizing the LIN-11,ISL-1,and MEC-3(LIM)peptidase DA1,thereby regulating organ size in *** of ULT1 function significantly increases rosette leaf,petal,silique,and seed size,whereas overexpression of ULT1 results in reduced organ ***1 associates with TCP14 and TCP15 to co-regulate cell size by affecting cellular *** analysis revealed that ULT1 and TCP14/15 regulate common target genes involved in endoreduplication and leaf ***1 can be recruited by TCP14/15 to promote lysine 4 of histone H3 trimethylation at target genes,activating their expression to determinefinal cell ***,we found that ULT1 influences the interaction of DA1 and TCP14/15 and antagonizes the effect of DA1 on TCP14/15 ***,ourfindings reveal a novel epigenetic mechanism underlying the regulation of organ size in Arabidopsis.

关键词： ULT1 TCP DA1 organ size endoreduplication

Novel Ni_(3)S_(4)/NiS/NC composite with multiple heterojunctions synthesized through space-confined effect for high-performance supercapacitors

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International Journal of Extreme Manufacturing 2023年第1期5卷 318-329页

作者： Wutao Wei Zijie Guo jiaqiang xu Zhe Fang Jiujun Zhang Yu Jia Liwei Mi Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai 200444People’s Republic of China Henan Key Laboratory of Functional Salt Materials Center for Advanced Materials ResearchZhongyuan University of TechnologyZhengzhou 450007HenanPeople’s Republic of China International Laboratory for Quantum Functional Materials of Henan&School of Physics and Engineering Zhengzhou UniversityZhengzhou 450001HenanPeople’s Republic of China

The construction of heterojunctions in composite materials to optimize the electronic structures and active sites of energy materials is considered to be the promising strategy for the fabrication of high-performance electrochemical energy *** this paper,a one-step,easy processing and cost-effective technique for generating composite materials with heterojunctions was successfully *** composite containing Ni_(3)S_(4),NiS,and N-doped amorphous carbon(abbreviated as Ni_(3)S_(4)/NiS/NC)with multiple heterojunction nanosheets are synthesized via the space-confined effect of molten salt interface of recrystallized *** lattice matching forms of Ni_(3)S_(4)with cubic structure and NiS with hexagonal structure are confirmed by the detailed characterization of heterogeneous *** C–S bonds are the key factor in realizing the chemical coupling between nickel sulfide and NC and constructing the stable *** functional theory calculations further revealed that the electronic interaction on the heterogeneous interface of Ni_(3)S_(4)/NiS can contribute to high electronic *** heterogeneous interfaces are identified to be the good electroactive region with excellent electrochemical *** synergistic effect of abundant active sites,the enhanced kinetic process and valid interface charge transfer channels of Ni_(3)S_(4)/NiS/NC multiple heterojunction can guarantee high reversible redox activity and high structural stability,resulting in both high specific capacitance and energy/power densities when it is used as the electrode for *** work offers a new avenue for the rational design of the heterojunction materials with improved electrochemical performance through space-confined effect of NaCl.

关键词： multiple heterojunction space-confined effect electronic interaction supercapacitors

Ecological problems and ecological restoration zoning of the Aral Sea

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Journal of Arid Land 2024年第3期16卷 315-330页

作者： BAO Anming YU Tao xu Wenqiang LEI jiaqiang JIAPAER Guli CHEN Xi Tojibaev KOMILJON Shomurodov KHABIBULLO Xabibullaev B SAGIDULLAEVICH Idirisov KAMALATDIN State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Key Laboratory of GIS&RS Application Xinjiang Uygur Autonomous RegionUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China CAS Research Center for Ecology and Environment of Central Asia Urumqi 830011China Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan Tashkent 100125Uzbekistan International Innovation Center for Aral Sea Basin under the President of the Republic of Uzbekistan Nukus 230100Uzbekistan

The Aral Sea was the fourth largest lake in the world but it has shrunk dramatically as a result of irrational human activities, triggering the "Aral Sea ecological crisis". The ecological problems of the Aral Sea have attracted widespread attention, and the alleviation of the Aral Sea ecological crisis has reached a consensus among the five Central Asian countries(Kazakhstan, Uzbekistan, Tajikistan, Kyrgyzstan, and Turkmenistan). In the past decades, many ecological management measures have been implemented for the ecological restoration of the Aral Sea. However, due to the lack of regional planning and zoning, the results are not ideal. In this study, we mapped the ecological zoning of the Aral Sea from the perspective of ecological restoration based on soil type, soil salinity, surface water, groundwater table, Normalized Difference Vegetation Index(NDVI), land cover, and aerosol optical depth(AOD) data. Soil salinization and salt dust are the most prominent ecological problems in the Aral Sea. We divided the Aral Sea into 7 first-level ecological restoration subregions(North Aral Sea catchment area in the downstream of the Syr Darya River(Subregion Ⅰ);artificial flood overflow area in the downstream of the Aral Sea(Subregion Ⅱ);physical/chemical remediation area of the salt dust source area in the eastern part of the South Aral Sea(Subregion Ⅲ);physical/chemical remediation area of severe salinization in the central part of the South Aral Sea(Subregion Ⅳ);existing water surface and potential restoration area of the South Aral Sea(Subregion Ⅴ);Aral Sea vegetation natural recovery area(Subregion Ⅵ);and vegetation planting area with slight salinization in the South Aral Sea(Subregion Ⅶ)) and 14 second-level ecological restoration subregions according to the ecological zoning principles. Implementable measures are proposed for each ecological restoration subregion. For Subregion Ⅰ and Subregion Ⅱ with lower elevations, artificial flooding should be carried out to re

关键词： ecological restoration zoning salt and dust storms soil salinization ecological crisis Aral Sea Central Asia

Preparation and Gas Sensitive Properties of Nanometer-Sized SnO_(2)

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Advances in Manufacturing 1998年第1期 75-79页

作者： Pan Qingyi Dong Xiaowen xu jiaqiang Zhang Jianping Shi Liyi School of Chemicstry and Chemical Engineering Shanghai University Zhengzhou Institute of Light Industry

Nanometer sized SnO 2 particles were prepared by a sol gel method using inorganic salt as a precursor material. Its crystallization was investigated by means of TG DTA,IR absorption spectra, X ray diffractometry and TEM as well as its resistivity change and the gas sensitivity varied with temperature were measured in various reducing gas. The results indicate that well crystallized nano sized SnO 2 with size around 15nm can be obtained at annealing temperature 600℃. The activation energy for the growth of nano SnO 2 was calculated to be *** 1 when the annealing temperature was higher than 500℃. The measurements also show that there is a peculiar resistance change varied with temperature for nano SnO *** has relevance to the increase in surface adsorbed oxygen. The selective detectivities to C 4H 10 and petrol can be increased when ruthenium ion was doped in nano SnO 2 as a catalyst and so do the gas sensitivity to CO,CH 4,H 2 etc. when rhodium ion was doped *** detection to the several reducing gas can be realized when the temperature ranged from 260℃ to 400℃.

关键词： sol gel nanometer sized tin oxide gas sensitive property

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锂离子电池用高性能五氧化二钒

硅酸盐学报 2011年第7期39卷 1130-1134页

作者：耿明赵宏滨徐甲强上海大学理学院上海200444

在180℃水热条件下制备了钒氧化物,再通过煅烧前驱物VO2制备了微纳结构的五氧化二钒正极材料。通过X射线衍射、扫描电子显微镜、红外光谱等对样品的形貌、组成等进行表征。以合成的长方柱状V2O5作为锂离子电池的正极材料,测试了其充放... 详细信息

在180℃水热条件下制备了钒氧化物,再通过煅烧前驱物VO2制备了微纳结构的五氧化二钒正极材料。通过X射线衍射、扫描电子显微镜、红外光谱等对样品的形貌、组成等进行表征。以合成的长方柱状V2O5作为锂离子电池的正极材料,测试了其充放电性能。结果表明:合成的V2O5为均匀的长方柱状结构,尺寸介于微米、纳米尺寸之间,对材料的结构和充放电循环稳定性起到重要作用;电极的初始放电比容量为222.7 mA.h/g,效率维持在98%;在电压为2.0～4.0 V的范围内,经过40次循环,其放电比容量仍然维持在215.2 mA.h/g。

关键词：五氧化二钒微纳尺寸材料锂离子电池正极材料循环稳定性

磷钨酸衍生Sn掺杂氧化钨纳米材料的制备及气敏性能

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河南师范大学学报（自然科学版） 2023年第1期51卷 20-28,F0002页

作者：徐甲强吴越上海大学理学院化学系新能源与传感技术实验室上海200444

采用简便的液相离子交换法制备了Sn掺杂磷钨酸,并通过煅烧衍生出Sn掺杂的氧化钨气敏材料.将材料制成MEMS(微机电系统)气体传感器测量了合成材料的气敏性能.测试结果表明,所得材料对硫化氢气体具有良好的选择性,检测限低至1×10^(-6)(体... 详细信息

采用简便的液相离子交换法制备了Sn掺杂磷钨酸,并通过煅烧衍生出Sn掺杂的氧化钨气敏材料.将材料制成MEMS(微机电系统)气体传感器测量了合成材料的气敏性能.测试结果表明,所得材料对硫化氢气体具有良好的选择性,检测限低至1×10^(-6)(体积分数),且在一定的体积浓度范围内具有良好的线性响应.XRD测试证明了Sn元素的成功掺杂,紫外可见漫反射光谱测定了Sn掺杂后带隙的变化,将其应用于讨论Sn掺杂的气敏增强机理.

关键词： Sn掺杂氧化钨硫化氢气体传感器 MEMS传感器气敏机理