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Study on standards of 1:50000 hydrogeological maps in China

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Journal of Groundwater Science and Engineering 2020年第2期8卷 127-133页

作者： WEN Xue-ru CHENG yan-pei WU Ai-min DONG Hua YI qing LIU Kun Institute of Hydrogeology and Environmental Geology CAGSShijiazhuang 050061China Field Research Base for Groundwater Sciences and Engineering Ministry of Natural ResourcesShijiazhuang 050061China Department of Hydrogeology and Environmental Geology China Geological SurveyBeijing 100011China

In compilation of 1: 50 000 hydrogeological map, Some principles which are suitable for hydrogeological characteristics in China have been defined. Groundwater development and protection have been regarded as equally important. Some key problems such as classification of water-bearing formation, water yield property, color system and color scale of water yield property of water-bearing formation, expression of groundwater system, expression of hydrogeological parameters have been solved. This standardizing work can lay solid foundation for integration of 1: 50 000 synthetic hydrogeological map achievement and data, so as to broaden the service areas of hydrogeological survey.

关键词： Hydrogeological mapping 1:50000 Standards

Spherical Packing Superlattices in Self-Assembly of Homogenous Soft Matter:Progresses and Potentials

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Chinese Journal of Polymer Science 2023年第5期41卷 607-620,I0005页

作者： Yuchu Liu Huanyu Lei qing-Yun Guo Xianyou Liu Xinghan Li Yuean Wu Weiyi Li Wei Zhang Geng Xin Liu Xiao-Yun yan Stephen Z.D.Cheng South China Advanced Institute for Soft Matter Science and Technology School of Molecular Science and EngineeringSouth China University of TechnologyGuangzhou 510640China School of Polymer Science and Polymer Engineering The University of AkronAkron OH 44325-3909USA State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Material Science and EngineeringDonghua UniversityShanghai 201620China

The construction of complex superlattices using homogenous soft matter has great potential for the bottom-up fabrication of complex,nanoscale *** topic is not only interested in scientific exploring for new concepts of supramolecular crystals with nanometer in sizes,which is about thousand times larger in volumes than those of normal crystals,but also practically important to provide construction principles of metamaterials which are artificially structured materials for controlling and manipulating light,sound,and other physical *** systems have fast assembly kinetics and convenient processing procedures,making them ideal for large-scale superlattice *** this perspective,we focus on recent developments in the construction of complex spherical packing superlattices using homogenous soft *** discuss the general mechanism of those formations of supramolecular motifs and provide an overview of the spherical packing superlattices self-assembled by homogenous soft matters based on different volume ***,we outline the potentials of utilizing this approach in constructing novel superlattices as well as its future challenges.

关键词： Soft matter Self-assembly Spherical packing phases Superlattice Bottom-up construction

Quantitative temperature imaging at elevated pressures and in a confined space with CH4/air laminar flames by filtered Rayleigh scattering

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Chinese Physics B 2020年第2期29卷 315-320页

作者： Bo yan Li Chen Meng Li Shuang Chen Cheng gong Fu-Rong yang Yun-Gang Wu Jiang-Ning Zhou Jin-He Mu Science and Technology on Scramjet Laboratory Hypervelocity Aerodynamics InstituteChina Aerodynamics Research and Development CenterMianyang 621000China Facility Design and Instrumentation Institute China Aerodynamics Research and Development CenterMianyang 621000China College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

Laminar methane/air premixed flames at different pressures in a newly developed high-pressure laminar burner are studied through Cantera simulation and filtered Rayleigh scattering(FRS).Different gas component fractions are obtained through the detailed numerical *** this approach can be used to correct the FRS images of large variations in a Rayleigh cross section in different flame *** temperature distribution above the flat burner is then presented without stray light interference from soot and wall *** also show that the extent of agreement with the single point measurement by the thermocouple is<6%.Finally,this study concludes that the relative uncertainty of the presented filtered Rayleigh scattering diagnostics is estimated to be below 10%in single-shot imaging.

关键词： filtered Rayleigh scattering high-pressure combustion simulator temperature measurement

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约翰逊和他的“托利主义”

国外文学 2011年第2期 18-26页

作者：龚龑中华女子学院外语系

作为职业作家,约翰逊的写作终其一生都或多或少牵及政治。约翰逊自称为托利分子,他的"托利主义"该如何定义?本文先介绍英国18世纪政治史研究中的两个对立流派,以它们为参照来界定约翰逊的"托利主义",再追溯约翰逊的政治经历和观点,并对... 详细信息

作为职业作家,约翰逊的写作终其一生都或多或少牵及政治。约翰逊自称为托利分子,他的"托利主义"该如何定义?本文先介绍英国18世纪政治史研究中的两个对立流派,以它们为参照来界定约翰逊的"托利主义",再追溯约翰逊的政治经历和观点,并对他的一些同政治相关的作品加以评判。

关键词：约翰逊 “托利主义” 政治观念恩俸

面向公共卫生安全网络舆情预警的弱关联挖掘方法研究

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情报科学 2022年第6期40卷 19-24页

作者：龚艳中共天津市委党校天津300191

【目的/意义】随着网络规模的持续扩张,加强公共卫生安全网络舆情的特征挖掘及走向预测,探索舆情预警机制,已成为当前公共卫生安全治理领域亟待解决的关键问题。【方法/过程】本文基于对公共卫生安全网络舆情预警特征的理解,采用弱关联... 详细信息

【目的/意义】随着网络规模的持续扩张,加强公共卫生安全网络舆情的特征挖掘及走向预测,探索舆情预警机制,已成为当前公共卫生安全治理领域亟待解决的关键问题。【方法/过程】本文基于对公共卫生安全网络舆情预警特征的理解,采用弱关联挖掘方法构建了包括舆情黏合性、热力性、趋势性三个维度的公共卫生安全网络舆情预警模型。基于此,以“长春长生问题疫苗事件”的舆情数据为例,对公共卫生安全网络舆情的影响要素进行了详细分析;同时,综合运用K-Means聚类算法与灰色关联分析方法,对该事件的舆情发展时间进行预警分级,为后续对策建议提供支撑。【结果/结论】结果表明基于K-Means聚类算法的弱关联挖掘方法在公共卫生安全网络舆情中具有较强的适用性。【创新/局限】本文基于公共卫生安全网络舆情特点,采用K-Means聚类算法与灰色关联分析方法划分预警等级,实现了研究方法上的创新。但仍存在一些不足之处,如预警分级自动化触点的研究等,需要后续更加深入的探究。

关键词：网络舆情公共卫生安全事件 K-Means聚类算法灰色关联分析预警等级预警指标体系

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绿植光伏屋顶技术研究现状及存在的问题

广州建筑 2024年第1期52卷 105-108页

作者：刘兆祥徐雯雯闫贵海龚超杨永友张涛中冶建筑研究总院(深圳)有限公司深圳518055 中冶建筑研究总院有限公司北京100088

绿植屋顶不仅可以有效美化建筑外观,还可以有效降低建筑能耗;光伏屋顶则可以在提供可再生能源的同时降低建筑物本身的能耗。为了充分利用二者的优势,学者们提出了绿植光伏屋顶的概念,将光伏屋顶和绿植屋顶进行有机结合,充分发挥了两者... 详细信息

绿植屋顶不仅可以有效美化建筑外观,还可以有效降低建筑能耗;光伏屋顶则可以在提供可再生能源的同时降低建筑物本身的能耗。为了充分利用二者的优势,学者们提出了绿植光伏屋顶的概念,将光伏屋顶和绿植屋顶进行有机结合,充分发挥了两者的优势。本文通过文献调研,对绿植光伏屋顶技术的研究现状及存在的问题进行了总结。绿植光伏屋顶具有提高能量效率、提高经济效率、降低碳排放及降低灰尘等优点,相较于单独的光伏或绿植屋顶更具优势。但是其发展仍面临缺乏综合实验研究和全生命周期分析,配套理念及设施不足等缺点,本文研究可以为绿色光伏屋顶后续研究提供参考。

关键词：绿植光伏屋顶绿植屋顶光伏组件研究现状存在问题

Sulfur-doped 3D hierarchical porous carbon network toward excellent potassium-ion storage performance

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Rare Metals 2021年第9期40卷 2464-2473页

作者： Dan Wang Kang-Hui Tian Jie Wang Zhi-Yuan Wang Shao-Hua Luo yan-Guo Liu qing Wang Ya-Hui Zhang Ai-Min Hao Ting-Feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Key Laboratory of Dielectric Electrolyte Functional Materia-Hebei ProvinceQinhuangdao 066004China School of Resources and Materials Northeastern UniversityQinhuangdao 066004China

Carbonaceous materials are promising anode candidates for potassium-ion batteries, but currently the unsatisfactory cycling and rate performances due to the sluggish diffusion kinetic and serious structure damage during K+ insertion/extraction limit their practical application. Herein, a series of sulfur-doped porous carbons(SPCs) were prepared via a template-assisted freeze-drying followed by the carbonization and sulfuration processes at different temperatures. Among the three as-synthesized samples, SPC-600 exhibits the highest specific capacity(407 mAh·g^(-1) at 0.10 A·g^(-1)), the best rate(242 mAh·g^(-1) at 2.00 A·g^(-1)) and cycling performance(286 m Ah·g^(-1) after 800 cycles at 0.50 A·g^(-1)). All the SPCs display higher capacities than the undoped carbon materials. The excellent electrochemical performance of SPC can be ascribed to the abundant three-dimensional porous structure together with S-doping in the disordered carbon, which is favor of providing adequate reaction active sites as well as fast ion/electron transport paths. The density functional theory(DFT) calculations further demonstrate that the sulfurdoping can promote K-ion adsorption and storage. Meanwhile, the kinetic analyses reveal that surface-induced capacitive mechanism dominates the K-ion storage process in SPCs, which contributes to ultrafast charge storage. This work provides an effective strategy for fabricating highperformance potassium-ion storage electrode materials.

关键词： Potassium-ion batteries Porous carbon Sulfur-doping Density functional theory(DFT)calculations

Triazine and Porphyrin-Based Cross-Linked Conjugated Polymers:Protonation-Assisted Dissolution and Thermoelectric Properties

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CCS Chemistry 2021年第11期3卷 2688-2695页

作者： Ling-Ling Wang qing-Lin Jiang Duo-Kai Zhao qing-Lei Zhang yan-Hua Jia Cheng Gu De-Hua Hu Yu-Guang Ma Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640

As two pivotal functional segments,triazine and porphyrin can be coupled to form a highly cross-linked conjugated *** the obtained conjugated polymers are almost insoluble in most solvents,a small amount of protonic acid can cause the formation of a colloidal solution of *** dissolution process has proved to be a surface charge effect induced by protonation of porphyrin units in the polymer ***-quality conjugated polymer films have been prepared on diverse substrates by solution drop-casting and then used for thermoelectric(TE)*** films exhibit remarkable TE performance with high Seebeck coefficients(−6650μV K^(−1))and electronic conductivities(0.042 S cm^(−1)),yielding a power factor of 185μW m^(−1) K^(−2),which,collectively,are the highest among all reported n-type organic TE *** work may pave the way for the design and development of solution-processed,cross-linked polymer films as promising TE materials.

关键词： cross-linked conjugated polymers protonation-assisted dissolution triazine porphyrin thermoelectric

Differences in Non-suicidal Self-injury Behaviors between Unipolar Depression and Bipolar Depression in Adolescent Outpatients

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Current Medical Science 2023年第5期43卷 998-1004页

作者： Ting-wei WANG Jian gong yang WANG Zhen LIANG Ke-liang PANG Jie-si WANG Zhi-guo ZHANG Chun-yan ZHANG Yue ZHOU Jun-chang LI yan-ni WANG Yong-jie ZHOU School of Public Health Lanzhou UniversityLanzhou 730000China Shenzhen Mental Health Center Shenzhen Kangning HospitalShenzhen 518000China College of Management Shenzhen UniversityShenzhen 518000China School of Biomedical Engineering Health Science CenterShenzhen UniversityShenzhen 518000China School of Pharmaceutical Sciences IDG/McGovern Institute for Brain ResearchTsinghua University-Peking University Joint Center for Life SciencesTsinghua UniversityBeijing 100000China CAS Key Laboratory of Mental Health Institute of PsychologyChinese Academy of SciencesBeijing 100000China

Objective Non-suicidal self-injury(NSSI)has a higher prevalence in adolescents with depressive disorders than in community *** study examined the differences in NSSI behaviors between adolescents with unipolar depression(UD)and those with bipolar depression(BD).Methods Adolescents with UD or BD were recruited from 20 general or psychiatric hospitals across *** methods,frequency,and function of NSSI were assessed by Functional Assessment of *** Beck Suicide Ideation Scale was used to evaluate adolescents’suicidal ideation,and the 10-item Kessler Psychological Distress Scale to estimate the anxiety and depression *** The UD group had higher levels of depression(19.16 vs.17.37,F=15.23,P<0.001)and anxiety symptoms(17.73 vs.16.70,F=5.00,P=0.026)than the BD *** with BD had a longer course of NSSI than those with UD(2.00 vs.1.00 year,Z=−3.39,P=0.001).There were no statistical differences in the frequency and the number of methods of NSSI between the UD and BD ***(r=0.408,P<0.01)and anxiety(r=0.391,P<0.01)were significantly and positively related to NSSI *** Adolescents with BD had a longer course of NSSI than those with *** importantly,NSSI frequency were positively and strongly correlated with depression and anxiety symptoms,indicating the importance of adequate treatment of depression and anxiety in preventing and intervening adolescents’NSSI behaviors.

关键词： non-suicidal self-injury unipolar depression bipolar depression depression anxiety adolescent