检索结果-南通市图书馆

Impact of Meteorological Drought on Streamflow Drought in Jinghe River Basin of China

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2014年第6期24卷 694-705页

作者： ZHAO Lin LYU Aifeng WU Jianjun Michael HAYES TANG Zhenghong he Bin liu Jinghui liu Ming School of Resource and Environmental Sciences Wuhan University Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Academy of Disaster Reduction and Emergency Management Beijing Normal University National Drought Mitigation Center School of Natural resourcesUniversity of Nebraska-Lincoln Lincoln 68588USA College of Architecture University of Nebraska-Lincoln Lincoln68588USA College of Global Change and Earth System Beijing Normal University

Under global climate change, drought has become one of the most serious natural hazards, affecting the ecological environment and human life. Drought can be categorized as meteorological, agricultural, hydrological or socio-economic drought. Among the different categories of drought, hydrological drought, especially streamflow drought, has been given more attention by local governments, researchers and the public in recent years. Identifying the occurrence of streamflow drought and issuing early warning can provide timely information for effective water resources management. In this study, streamflow drought is detected by using the Standardized Runoff Index, whereas meteorological drought is detected by the Standardized Precipitation Index. Comparative analyses of frequency, magnitude, onset and duration are conducted to identify the impact of meteorological drought on streamflow drought. This study focuses on the Jinghe River Basin in Northwest China, mainly providing the following findings. 1) Eleven meteorological droughts and six streamflow droughts were indicated during 1970 and 1990 after pooling using Inter-event time and volume Criterion method. 2) Streamflow drought in the Jinghe River Basin lagged meteorological drought for about 127 days. 3) The frequency of streamflow drought in Jinghe River Basin was less than meteorological drought. However, the average duration of streamflow drought is longer. 4) The magnitude of streamflow drought is greater than meteorological drought. These results not only play an important theoretical role in understanding relationships between different drought categories, but also have practical implications for streamflow drought mitigation and regional water resources management.

关键词： streamflow drought meteorological drought Standardized Precipitation Index (SPI) Standardized Runoff Index (SRI) timelag Jinghe River Basin

在线全文

学校读者我要写书评

暂无评论

论耕地保护法中的惩罚性赔偿制度

现代法学 2025年第1期47卷 25-40页

作者：刘玖林重庆大学法学院重庆400044

我国耕地保护存在耕地面积持续递减、地力严重退化、环境风险越发严峻等突出问题,其核心原因在于,违法成本过低、激励机制不足及制度体系逻辑失衡。《耕地保护法(草案)》(征求意见稿)第70条规定的惩罚性赔偿制度具有推进耕地损害赔偿均... 详细信息

我国耕地保护存在耕地面积持续递减、地力严重退化、环境风险越发严峻等突出问题,其核心原因在于,违法成本过低、激励机制不足及制度体系逻辑失衡。《耕地保护法(草案)》(征求意见稿)第70条规定的惩罚性赔偿制度具有推进耕地损害赔偿均衡化、贯彻最严格耕地保护政策、构筑耕地保护多元共治机制的整合功能,是破解耕地保护实践困境的有效方案。但惩罚性赔偿非属常态责任形式,耕地侵权惩罚性赔偿制度的法律化应从主、客观方面作出严格限制。在责任构成方面,行为要件宜为违反法律规定而非违反国家规定,过错要件宜限于故意而不含重大过失,因果要件宜采证明责任正置而非倒置,结果要件宜限于造成严重后果而非情节严重。在数额认定方面,惩罚数额计算模式宜采单一倍率限制模式,惩罚基准应以受害人实际损失数额但不含精神损害赔偿金为据,惩罚倍数宜限定为二倍以下,量定因素可综合考虑罚款或罚金。

关键词：耕地保护法惩罚性赔偿土地管理法法律责任粮食安全

规训与道德化——在读博士生“休息羞耻”的隐忧及其消解

在线全文

学校读者我要写书评

暂无评论

现代大学教育 2025年第1期041卷 32-39页

作者：刘潞杜时忠华中师范大学教育学院华中师范大学教育学院道德教育研究所华中师范大学湖北省学校德育研究中心

在读博士生的“休息羞耻”是其在时间分配上由于选择休息与投入学术劳动两者冲突而激发的一种痛苦情绪体验。“休息羞耻”不仅给博士生个人造成时间焦虑与精神内耗，使自身走向工具化，而且会因学术平庸、恶性竞争等破坏学术自由，导致... 详细信息

在读博士生的“休息羞耻”是其在时间分配上由于选择休息与投入学术劳动两者冲突而激发的一种痛苦情绪体验。“休息羞耻”不仅给博士生个人造成时间焦虑与精神内耗，使自身走向工具化，而且会因学术平庸、恶性竞争等破坏学术自由，导致大学公司化。博士生“休息羞耻”的底层逻辑在于，原本道德中立的事物(努力、时间、成功)在自我、技术、制度的规训之下被赋予道德属性，从而使得休息带来道德上的羞耻感。首先，在自我规训方面，牺牲休息和娱乐被视为对学术职业的奉献，将努力道德化。其次，在技术规训方面，“全景敞视”下的持续劳动被视为对学术追求的承诺，将时间道德化。最后，在制度规训方面，论文发表被视为评价博士生学术胜利的唯一标准，将成功道德化。告别“休息羞耻”,可进行以下探索：在读博士生要学会自我松绑，周期性地从时间中逃逸，将努力与道德脱钩；反思技术与时间的本质，尊重学术发展的时间规律；优化博士生毕业与就业的考评制度，增加学术研究的时间福利，多元定义成功的标准，从而在根基上化解在读博士生的时间焦虑。

关键词：在读博士生休息羞耻道德化规训时间焦虑学术“内卷”

Advances in the differentiation of pluripotent stem cells into vascular cells

在线全文

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2024年第2期16卷 137-150页

作者： Yi-Chang Jiao Ying-Xin Wang wen-Zhu liu Jing-wen Xu Yu-Ying Zhao Chuan-Zhu Yan Fu-Chen liu Department of Neurology Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Research Institute of Neuromuscular and Neurodegenerative Diseases Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Mitochondrial Medicine Laboratory Qilu Hospital(Qingdao)of Shandong UniversityQingdao 266103Shandong ProvinceChina Brain Science Research Institute Shandong UniversityJinan 250012Shandong ProvinceChina

Blood vessels constitute a closed pipe system distributed throughout the body,transporting blood from the heart to other organs and delivering metabolic waste products back to the lungs and *** in blood vessels are related to many disorders like stroke,myocardial infarction,aneurysm,and diabetes,which are important causes of death *** research for new appro-aches to disease modeling and effective treatment is needed due to the huge socio-economic burden on healthcare *** mice or rats have been widely used,applying data from animal studies to human-specific vascular physiology and pathology is *** rise of induced pluripotent stem cells(iPSCs)provides a reliable in vitro resource for disease modeling,regenerative medicine,and drug discovery because they carry all human genetic information and have the ability to directionally differentiate into any type of human *** review summarizes the latest progress from the establishment of iPSCs,the strategies for differentiating iPSCs into vascular cells,and the in vivo trans-plantation of these vascular *** also introduces the application of these technologies in disease modeling,drug screening,and regenerative ***,the application of high-tech tools,such as omics analysis and high-throughput sequencing,in this field is reviewed.

关键词： Induced pluripotent stem cell Blood vessels Vascular organoids Endothelial cells Smooth muscle cells Pericytes Tissue engineering vascular graft

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

童年的意义是什么？——基于现象学的视角

学前教育研究 2025年第2期 35-43页

作者：刘鑫鑫上海师范大学教育学院

童年作为人生旅程的重要阶段，其意义远不止是个体身心发育的重要时期，更是构建个体精神世界和价值观的关键时期。以阶段论为代表的传统实证主义方法论虽为理解儿童成长提供了有价值的研究框架，但其过于强调普遍规律和标准化发展模式... 详细信息

童年作为人生旅程的重要阶段，其意义远不止是个体身心发育的重要时期，更是构建个体精神世界和价值观的关键时期。以阶段论为代表的传统实证主义方法论虽为理解儿童成长提供了有价值的研究框架，但其过于强调普遍规律和标准化发展模式，忽视了儿童生活世界的多样性与独特性。现象学方法论强调关注个体主观体验和内在感受的特点，主张从儿童的生活世界出发，深入理解其内心世界和成长轨迹，这对理解童年在个体认知建构、社会适应和自我认同构建等方面的重要作用具有重要意义。

关键词：童年现象学个体发展意义

Fabrication of oxygen-defective tungsten oxide nanorods for deep oxidative desulfurization of fuel

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2018年第4期15卷 849-856页

作者： Haibin Sun Peiwen Wu Jing he Mingyang liu Linhua Zhu Fengxia Zhu Guangying Chen Minqiang he wenshuai Zhu School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu University Key Laboratory of Tropical Medicinal Plant Chemistry of Education Hainan Normal University School of Chemistry and Chemical Engineering Huaiyin Normal University

Owing to the increasingly serious environmental issues caused by the sulfur burnt in fuel, desulfurization has become an important topic. In this work, an amphiphilic oxygen-defective tungsten oxide was synthesized by a colloidal chemistry method. The amphiphilic property and oxygen defects were well characterized, and the structure of the oxygen-defective tungsten oxide catalyst was investigated. In addition, the catalyst was employed in oxidative desulfurization system of fuel,and deep desulfurization was achieved. It was found that the very high oxidative desulfurization performance of oxygendefective tungsten oxide catalyst resulted from both the amphiphilic property and oxygen defects. This work can provide a strategy for preparation of highly active metal oxide catalysts with oxygen defects in oxidative desulfurization reaction of fuel.

关键词： Tungsten oxide Oxygen vacancies Oxidative desulfurization Amphiphilic catalyst

Evolution of Plant Genome Size and Composition

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2024年第5期22卷 1-10页

作者： Bing he Wanfei liu Jianyang Li Siwei Xiong Jing Jia Qiang Lin Hailin liu Peng Cui Guangdong Laboratory for Lingnan Modern Agriculture Genome Analysis Laboratory of the Ministry of Agriculture and Rural AreaAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China College of Agronomy Qingdao Agricultural UniversityQingdao 266109China State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004China

The rapid development of sequencing technology has led to an explosion of plant genome data,opening up more opportunities for research in the field of comparative evolutionary analysis of plant *** this review,we focus on changes in plant genome size and composition,examining the effects of polyploidy,whole-genome duplication,and alternations in transposable elements on plant genome architecture and evolution,*** addition,to address gaps in the available information,we also collected and analyzed 234 representative plant genome data as a *** aim to provide a comprehensive,up-to-date summary of information on plant genome architecture and evolution in this review.

关键词： GC content Genome size Polyploidy Transposable element Whole-genome duplication

特高压工程主设备智慧安装平台建设研究与应用

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

现代信息科技 2025年第1期9卷 93-99页

作者：刘洋洋张珮瑶谢芳毅何锐北京洛斯达科技发展有限公司北京100044

特高压工程主设备安装具有工艺标准要求高、安装任务重、参与厂家多等特点,在安装作业工序交接时,存在上道工序作业质量核验复杂、质量控制依赖安装人员素质、安装过程质量追溯不便,以及安装单位、监理、业主等单位安装信息共享困难等... 详细信息

特高压工程主设备安装具有工艺标准要求高、安装任务重、参与厂家多等特点,在安装作业工序交接时,存在上道工序作业质量核验复杂、质量控制依赖安装人员素质、安装过程质量追溯不便,以及安装单位、监理、业主等单位安装信息共享困难等问题。为进一步提升特高压工程主设备安装管控水平,推动主设备安装管控的智能化与精细化,文章提出了一种特高压工程主设备智慧安装平台建设思路,并研究了平台的设计和实现方案,该平台已应用到某特高压变电站项目中,实践表明,智慧安装平台的建设,推动了特高压工程主设备安装质量精细化管理,提升了工程建设效能。

关键词：特高压工程主设备智慧安装平台

家庭的双重角色及其法律界定:传统基础与当代阐释

在线全文

学校读者我要写书评

暂无评论

中国人民大学学报 2025年第1期39卷 110-125页

作者：汪洋刘冲清华大学法学院

家庭先于社会和国家而存在,作为法律概念的“家庭”是国家权力对既存的家庭伦理秩序的规范性描述。从历史视角观察,无论是在传统中国还是在当代中国,家庭都承担着伦理秩序载体和国家治理单元两种角色。对于不同角色,国家权力在进行规范... 详细信息

家庭先于社会和国家而存在,作为法律概念的“家庭”是国家权力对既存的家庭伦理秩序的规范性描述。从历史视角观察,无论是在传统中国还是在当代中国,家庭都承担着伦理秩序载体和国家治理单元两种角色。对于不同角色,国家权力在进行规范性描述时所遵循的逻辑是不同的,不同角色所对应的“家庭”概念边界亦不相同。家庭作为伦理秩序载体,其本身就是治理目的之所在,相对应的“家庭”概念应严格依据《民法典》第1045条和第1050条界定。家庭作为国家治理单元,则是实现其他治理目的的工具,相对应的“家庭”概念边界应基于治理目的之需要而灵活界定。此外,还存在第三种“家庭”概念,其意义是在家庭伦理系统和其他系统之间划定一条边界,此种“家庭”概念边界的确定要在不同领域、不同案件中进行具体分析。

关键词：家庭传统中国当代中国伦理秩序载体国家治理单元《民法典》