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Agricultural Land Use Optimal Allocation System in Developing Area:Application to Yili Watershed, Xinjiang Region

Chinese Geographical Science 2012年第2期22卷 232-244页

作者： ZHANG Ying ZHANG Hongqi ni dongying SONG Wei Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beij＇ing 100101 China Graduate University of Chinese Academy of Sciences Beo＇ing 100049 China Beijing Forestry University Beijing 100083 China

In developing countries, land productivity involves little market, where the agricultural land use is mainly determined by the food demands as well as the land suitability. The land use pattern will not ensure everywhere enough land for certain cropping if spatial allocation just according to land use suitability. To solve this problem, a subzone and a pre-allocation for each land use are added in spatial allocation module, and land use suitability and area optimi- zation module are incorporated to constitute a whole agricultural land use optimal allocation （ALUOA） system. The system is developed on the platform .Net 2005 using ArcGIS Engine （version 9.2） and C# language, and is tested and validated in Yili watershed of Xinjiang Region on the newly reclaimed area. In the case study, with the help of soil data obtained from 69 points sampled in the fieldwork in 2008, main river data supplied by the Department of Water Resources of Xinjiang Uygur Autonomous Region in China, and temperature data provided by Data Center for Resources and Environmental Sciences, Chinese Academy of Sciences, land use suitability on eight common crops are evaluated one by one using linear weighted summation method in the land use suitability model. The linear pro- gramming （LP） model in area optimization model succeeds to give out land area target of each crop under three scenarios. At last, the land use targets are allotted in space both with a six subzone file and without a subzone file. The resuits show that the land use maps with a subzone not only ensure every part has enough land for every crop, but also gives a more fragmental land use pattern, with about 87.99% and 135.92% more patches than the one without, while at the expense of loss between 15.30% and 19.53% in the overall suitability at the same time.

关键词： developing country agricultural land subzone optimal allocation Yili watershed

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基于文献计量分析的本科医学教育研究热点分析

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医学与社会 2020年第6期33卷 126-130页

作者：倪东颖复旦大学上海医学院教务处上海200032

目的:分析近20年来本科医学教育研究热点和研究趋势,以期促进本科医学生教育的优化。方法:以CNKI期刊论文及硕士、博士论文为数据源进行文献计量分析,运用BibExcel、 SPSS 22.0和Ucinet 6.0软件统计高频关键词,构建共现矩阵,进行聚类分... 详细信息

目的:分析近20年来本科医学教育研究热点和研究趋势,以期促进本科医学生教育的优化。方法:以CNKI期刊论文及硕士、博士论文为数据源进行文献计量分析,运用BibExcel、 SPSS 22.0和Ucinet 6.0软件统计高频关键词,构建共现矩阵,进行聚类分析并绘制出关键词共词网络。利用Citespace对关键词做突现分析,结合聚类结果共同分析研究热点。结果:本科医学教育围绕3条主线展开,即优化本科生培养模式;探讨教学方法改革,提升教学质量;聚焦不同专业教育的研究。结论:本科医学教育应当牢牢抓住发展机遇,在教育理念、培养模式、课程体系、教学方法等方面改革创新。应结合医学学科特点,加强医学学科与其他学科的交叉融合,以学生为出发点优化教学方法,重视并完善课程体系的建设,强化科研和创新能力教育,多方位提升学生能力和素养,探寻符合新时代要求的人才培养模式。

关键词：医学教育本科研究热点

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糖尿病足患者FGF-2、Lp-PLA2及IGF-1水平与病情的相关性分析

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检验医学 2022年第9期37卷 826-830页

作者：张城费春霞付琳高辰飞倪冬英浙江中医药大学附属嘉兴中医院检验科浙江嘉兴314001

目的探讨糖尿病足患者血清成纤维细胞生长因子2(FGF-2)、脂蛋白相关磷脂酶A2(LpPLA2)及胰岛素样生长因子-1(IGF-1)水平变化,及其与病情严重程度的相关性。方法选取糖尿病足患者120例(糖尿病足组),按Wagner分级标准将所有患者分为0~1级... 详细信息

目的探讨糖尿病足患者血清成纤维细胞生长因子2(FGF-2)、脂蛋白相关磷脂酶A2(LpPLA2)及胰岛素样生长因子-1(IGF-1)水平变化,及其与病情严重程度的相关性。方法选取糖尿病足患者120例(糖尿病足组),按Wagner分级标准将所有患者分为0~1级组(40例)、2~3级组(48例)、4~5级组(32例)。另选取单纯2型糖尿病(T2DM)患者60例(T2DM组),以体检健康者60名作为正常对照组。检测所有对象血清FGF-2、Lp-PLA2及IGF-1水平。采用Spearman相关分析评价FGF-2、Lp-PLA2及IGF-1与Wagner分级的相关性。结果正常对照组、T2DM组及糖尿病足组血清FGF-2、Lp-PLA2水平依次升高(P<0.05),血清IGF-1水平依次降低(P<0.05)。糖尿病足患者中,0~1级组、2~3级组、4~5级组血清FGF-2、Lp-PLA2水平依次升高(P<0.05),血清IGF-1水平依次降低(P<0.05)。血清FGF-2、Lp-PLA2水平与Wagner分级呈正相关(r值分别为0.652、0.665,P<0.05),血清IGF-1水平与Wagner分级呈负相关(r=-0.643,P<0.05)。结论血清FGF-2、Lp-PLA2及IGF-1水平与糖尿病足病情严重程度密切相关。

关键词：成纤维细胞生长因子2 脂蛋白相关磷脂酶A2 胰岛素样生长因子-1 糖尿病足

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A strategy based on water soluble coal tar pitches to construct MnO_(2)@C composite materials with high electrochemical performance

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Science China(Technological Sciences) 2024年第1期67卷 311-320页

作者： LIU Bo WANG Kun GUO ZhaoQi HAN BeiBei XU GuiYing JU dongying AN BaiGang LI YongCheng ni ZhenYong ZHOU WeiMin Key Laboratory of Energy Materials and Electrochemistry Research Liaoning Province University of Science and Technology LiaoningAnshan 114051China Advanced Science Research Laboratory Saitama Institute of TechnologyFusaiji 1690Japan Liaoning Starry Sky Sodium Battery Co. Ltd.Anshan 114051China Sinosteel Anshan Research Institute of Thermo-Energy Co. Ltd.Anshan 114051China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China

The water soluble coal tar pitches(WS-CTPs)were successfully prepared and used to construct the MnO_(2)@C composite materials by a hydrothermal *** is interestingly observed that the structures and morphologies of MnO_(2)@C materials can be controlled by controlling the dosages of WS-CTPs and ***,it is aware that MnO_(2)exists in the MnO_(2)@C materials in an amorphous *** with MnO_(2),MnO_(2)@C materials output a remarkable improvement in electrochemical *** instance,MnO_(2)@C-0.3 shows the storage capacity at 965.7 mA h g^(−1)after 300 cycles at a current density of 0.1 A g^(−1).In addition,after 600 cycles at a current density of 1.0 A g^(−1),the storage capacity of MnO_(2)@C-0.3 still keeps 450.3 mA h g^(−1),indicating that MnO_(2)@C-0.3 owns tremendous cycle stability at a high current *** view of the fact that the coal tar pitches possess great cost advantages,the strategy of using WS-CTPs as a carbon source to cover the metal oxides is a competitive way to expand the application of metal oxides in the fabrication of electrodes of LIBs.

关键词： water soluble coal tar pitches MnO_(2) composite materials lithium ion batteries(LIBs) energy storage systems(ESSs) coal tar pitches

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Perturbation to Lie Symmetry and Adiabatic Invariants for General Holonomic Mechanical Systems

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Communications in Theoretical Physics 2007年第7期48卷 19-22页

作者： DING ning FANG Jian-Hui WANG Peng ZHANG Xiao-ni College of Physics Science and Technology,China University of Petroleum,dongying 257061,China College of Physics Science and Technology China University of Petroleum

Based on the concept of adiabatic invariant,the perturbation to the Lie symmetry and adiabatic invariantsfor general holonomic mechanical systems are *** exact invariants induced directly from the Lie symmetryof the system without perturbation are *** perturbation to the Lie symmetry is discussed and the adiabaticinvariants that have the different form from that in[***.55(2006)3236(in Chinese)]of the perturbedsystem,are obtained.

关键词： Lie symmetry perturbation adiabatic invariant general holonomic mechanical’system

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Hojman Exact Invariants and Adiabatic Invariants of Hamilton System

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Communications in Theoretical Physics 2007年第12期48卷 996-998页

作者： WANG Peng FANG Jian-Hui DING ning ZHANG Xiao-ni College of Physics Science and Technology,China University of Petroleum,dongying 257061,China College of Physics Science and Technology China University of Petroleum

The perturbation to Lie symmetry and adiabatic invariants are *** on the concept of higher-order adiabatic invariants of mechanical systems with action of a small perturbation,the perturbation to Lie symmetryis studied,and Hojman adiabatic invariants of Hamilton system are *** example is given to illustrate theapplication of the results.

关键词： Hamilton system symmetry exact invariant adiabatic invariant

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Amorphous niFeB nanoparticles realizing highly active and stable oxygen evolving reaction for water splitting

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Nano Research 2018年第3期11卷 1664-1675页

作者： Guang Liu dongying He Rui Yao Yong Zhao Jinping Li Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Research Institute of Special Chemicals Taiyuan University ofTechnology Taiyuan 030024 China

The development of highly efficient and inexpensive catalysts for oxygen evolving reactions （OERs） is extremely urgent for promoting the overall efficiency of water splitting. Herein we report the fabrication of a series of amorphous niFeB nanoparticles with varying atomic ratios of Fe to （ni ＋ Fe）（XFe） by a facile chemical-reduction method. The amorphous niFeB （XFe=0.20） nanoparticles, combining the merits of in situ formation of borate-enriched niFeOOH catalytic surface layers, intrinsic amorphous nanostructures, and an optimized degree of Fe doping, displayed highly active electrocatalytic performance towards the OER in a broad range of pH values （from alkaline to neutral conditions）. The catalyst exhibited a relatively low overpotential of 216 mV with a Tafel slope of 40 mWdec on ni foam and 251 mV with a Tafel slope of 43 mV/dec on glassy carbon at 10 mA/cm2 in a 1 M KOH solution, demonstrating much greater OER efficiency than that of commercial RuO2. Long-term stability testing of the OER performance of niFeB （XFe = 0.20） by chronoamperometry （overpotential （η） = 320 mV） over 200 h revealed no evidence of degradation. Facile, scalable synthesis and highly active water oxidation make the niFeB nanoparticles very attractive for OER electrocatalysis.

关键词： amorphous niFeB electrocatalyst oxygen evolving reaction water splitting

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HYDRODYNAMIC ANALYSIS OF SUCK-IN PULSED JET IN WELL DRILLING

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Journal of Hydrodynamics 2011年第1期23卷 34-41页

作者： WANG Rui-he DU Yu-kun ni Hong-jian MA Lin College of Petroleum Engineering China University of Petroleum Dongying 257061 China

The development of new drilling methods is important for the exploration and production of oil *** pulsed jet is a drilling technology of high *** article proposes a new concept of suck-in pulsed jet with self-excited oscillation,by which a full use of the hydraulic power can be made in the annular space.A hydrodynamic analysis of suck-in pulsed jet with self-excited oscillation is carried out by numerical simulations and rock-breaking *** is shown that with the jet,a negative pressure zone will be formed in the oscillation cavity to ensure automatic sucking of enough annular fluids and the formation of an efficient pulsed *** rock-breaking and pressure testing results have verified the reliability of the numerical *** research provides a basis for the development of the pulsed jet drilling technology.

关键词： drilling methods numerical simulation pulsed jet rock-breaking suck-in

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Mesoporous nickel-iron binary oxide nanorods for efficient electrocatalytic water oxidation

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Nano Research 2017年第6期10卷 2096-2105页

作者： Guang Liu Xusheng Gao Kaifang Wang dongying He Jinping Li Research Institute of Special Chemicals Taiyuan University of Technology Taiyuan 030024 China

The design and fabrication of low-cost, high-effidency, and stable oxygen-evolving catalysts are essential for promoting the overall efficiency of water electrolysis. In this study, mesoporous ni1-xFexOy （0 〈 x 〈 1, 1 〈y 〈 1.5） nanorods were synthesized by the facile thermal decomposition of ni-Fe-based coordination polymers. These polymers passed their nanorod-like morphology to oxides, which served as active catalysts for oxygen evolution reaction （OER）. Increasing the Fe-doping amount to 33 at.% decreased the particle size and charge-transfer resistance and increased the surface area, resulting in a reduced overpotential （-302 mV） at 10 mA/cm^2 and a reduced Tafel slope （-42 mV/dec）, which were accompanied by a far improved OER activity compared with those of commercial RuO2 and IrO2 electrocatalysts. At Fe-doping concentrations higher than 33 at.%, the trend of the electrocatalytic parameters started to reverse. The shift in the dopant concentration of Fe was further reflected in the structural transformation from a niO （〈33 at.% Fe） rock-salt structure to a biphasic niO/niFe204 （33 at.% Fe） heterostructure, a niFe204 （66 at.% Fe） spinel structure, and eventually to α-fe203 （100 at.% Fe）. The efficient water-oxidation activity is ascribed to the highly mesoporous one-dimensional nanostructure, large surface area, and optimal amounts of the dopant Fe. The merits of abundance in the Earth, scalable synthesis, and highly efficient electrocatalytic activity make mesoporous ni-Fe binary oxides promising oxygen-evolving catalysts for water splitting.

关键词： water splitting oxygen evolving electrocatalytic ni-Fe binary oxide nanorods

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基于等距离映射的非线性动态故障检测方法

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上海交通大学学报 2011年第8期45卷 1202-1206页

作者：张妮田学民中国石油大学(华东)信息与控制工程学院山东东营257061

针对化工过程数据强非线性和动态性的特点,提出了一种基于动态等距离映射(Dynamic Isometric Mapping,DISOMAP)流形学习的非线性过程故障检测方法.该方法首先采用DISOMAP算法提取训练样本的子流形特征,自适应学习近邻点参数,保留了采样... 详细信息

针对化工过程数据强非线性和动态性的特点,提出了一种基于动态等距离映射(Dynamic Isometric Mapping,DISOMAP)流形学习的非线性过程故障检测方法.该方法首先采用DISOMAP算法提取训练样本的子流形特征,自适应学习近邻点参数,保留了采样数据的流形结构,然后运用线性回归方法得到原空间和降维子流形空间的投影映射,从而将观测数据从原高维空间映射到低维嵌入空间,最后在变换后的低维空间构造统计量T2和SPE进行监控.TE过程的仿真结果表明,所提出的DISOMAP故障检测方法可以比核主元分析(Kernel Principle Component Analysis,KPCA)更为有效地监控过程变化,检测到故障的发生.

关键词：动态等距离映射流形学习非线性故障检测

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