首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   422篇
  免费   16篇
各国政治   48篇
工人农民   38篇
世界政治   35篇
外交国际关系   44篇
法律   155篇
中国政治   2篇
政治理论   116篇
  2022年   4篇
  2021年   3篇
  2020年   8篇
  2019年   15篇
  2018年   25篇
  2017年   19篇
  2016年   19篇
  2015年   14篇
  2014年   18篇
  2013年   81篇
  2012年   13篇
  2011年   22篇
  2010年   13篇
  2009年   13篇
  2008年   11篇
  2007年   9篇
  2006年   18篇
  2005年   9篇
  2004年   10篇
  2003年   12篇
  2002年   6篇
  2001年   3篇
  2000年   2篇
  1999年   2篇
  1998年   5篇
  1997年   2篇
  1996年   4篇
  1995年   5篇
  1994年   3篇
  1993年   3篇
  1992年   6篇
  1991年   3篇
  1989年   3篇
  1988年   3篇
  1986年   4篇
  1985年   7篇
  1984年   5篇
  1983年   7篇
  1982年   3篇
  1981年   2篇
  1980年   3篇
  1979年   3篇
  1978年   3篇
  1976年   3篇
  1975年   1篇
  1974年   2篇
  1972年   1篇
  1971年   2篇
  1970年   1篇
  1969年   1篇
排序方式: 共有438条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
The aim of this study was to develop chemical improvements to the original Weber protocol, in order to increase the intensity and time length of light emission and to eliminate false‐positive reactions. The intensity and duration of light were measured on serial blood dilutions using a plate reader chemiluminometer. Blood stains of various concentrations were impregnated in pure cellulose, dried, and luminol solution was added with/without the potential enhancers. An in silico study was also conducted, aiming to demonstrate the enhancing mechanism of hemoglobin denaturation using 8 M urea. The luminol blood detection test revealed important improvements after urea pretreatment or in the presence of monochloro‐triazinyl‐β‐cyclodextrin. This approach also eliminated the false‐positive reaction from sodium hypochlorite. These improvements could provide a higher sensitivity under particular circumstances such as old or washed blood stains, leading to a better localization for further DNA typing and higher quality photographic analysis.  相似文献   
65.
Gabapentin is an antiepileptic drug that is prescribed for both FDA-approved and multiple off-label conditions, and has a relatively safe side-effect profile. Rare cases of overdose-related adverse effects have been reported in the literature. Described herein are the circumstances and autopsy findings of a 62-year-old woman with a history of depression, whose death was caused by intentional ingestion of excess gabapentin. The postmortem peripheral blood gabapentin concentration as determined by high-performance liquid chromatography/tandem mass spectroscopy was 88 μg/mL. Previously reported cases of individuals surviving gabapentin overdoses are discussed and compared with this case. Based on a review of the available literature, this appears to be the first published report of a death due solely to gabapentin toxicity.  相似文献   
66.
67.
68.
69.
The Earth System Science Partnership, which unites all major global change research programmes, declared in 2001 an urgent need to develop “strategies for Earth System management”. Yet what such strategies might be, how they could be developed, and how effective, efficient and equitable such strategies would be, remains unspecified. It is apparent that the institutions, organizations and mechanisms by which humans currently govern their relationship with the natural environment and global biochemical systems are not only insufficient—they are also poorly understood. This article presents the science programme of the Earth System Governance Project, a new 10-year global research effort endorsed by the International Human Dimensions Programme on Global Environmental Change (IHDP). It outlines the concept of earth system governance as a challenge for the social sciences, and it elaborates on the interlinked analytical problems and research questions of earth system governance as an object of study. These analytical problems concern the overall architecture of earth system governance, agency beyond the state and of the state, the adaptiveness of governance mechanisms and processes as well as their accountability and legitimacy, and modes of allocation and access in earth system governance. The article also outlines four crosscutting research themes that are crucial for the study of each analytical problem as well as for the integrated understanding of earth system governance: the role of power, knowledge, norms and scale.  相似文献   
70.
Owen  David 《荷兰国际法评论》2018,65(3):299-317
Netherlands International Law Review - This article considers contemporary predicaments of nationality rights against the background of reflection on Arendt’s phrase ‘the right to have...  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号