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   13599篇
  免费   1324篇
各国政治   549篇
工人农民   467篇
世界政治   1045篇
外交国际关系   395篇
法律   9882篇
中国共产党   1篇
中国政治   93篇
政治理论   2400篇
综合类   91篇
  2021年   61篇
  2020年   372篇
  2019年   388篇
  2018年   449篇
  2017年   525篇
  2016年   527篇
  2015年   473篇
  2014年   491篇
  2013年   1484篇
  2012年   335篇
  2011年   451篇
  2010年   583篇
  2009年   553篇
  2008年   332篇
  2007年   322篇
  2006年   428篇
  2005年   315篇
  2004年   298篇
  2003年   303篇
  2002年   274篇
  2001年   477篇
  2000年   385篇
  1999年   329篇
  1998年   180篇
  1997年   165篇
  1996年   132篇
  1995年   162篇
  1994年   171篇
  1993年   134篇
  1992年   235篇
  1991年   250篇
  1990年   240篇
  1989年   244篇
  1988年   231篇
  1987年   194篇
  1986年   215篇
  1985年   240篇
  1984年   235篇
  1983年   196篇
  1982年   153篇
  1981年   139篇
  1980年   138篇
  1979年   155篇
  1978年   96篇
  1977年   82篇
  1976年   73篇
  1975年   74篇
  1974年   80篇
  1973年   68篇
  1972年   57篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
162.
163.
164.
165.
166.
167.
Recently a federal court in Georgia ruled that several physicians and several state officials could be sued for state-authorized treatment of a minor over his father's objection. State authorization protects providers only if it is properly obtained and the authorizing official has the power to grant the authorization in the existing circumstances.  相似文献   
168.
People die daily in the hospital. Mostly, they die because their illnesses were no longer treatable (natural death). Unfortunately, some people die an unnatural death, in particular, as the result of euthanasia. In contrast to the situation in most countries, in the Netherlands euthanasia is accepted by the courts under strict conditions. It can be very difficult for the legal authorities to establish whether a person has died from natural causes or from suicide, euthanasia, or murder. In addition to the pathologist and the lawyer, the toxicologist also has a number of problems in showing whether euthanasia has been carried out. These can consist of the following analytical problems: (a) interactions--the patients involved have frequently been receiving a large number of toxic and nontoxic drugs simultaneously; (b) identification--not all drugs administered are included in general screening procedures; (c) metabolites--a large number of metabolites may have accumulated toward the end of a long therapeutic regimen; and (d) determination--determination of quaternary muscle relaxants and their various metabolites, as well as other drugs, can be problematic. There are also toxicokinetic problems; because of poor kidney and liver function, low serum albumen, general malaise, and interactions between these factors and other drugs, the kinetics of a given drug can differ from normal. This makes it all the more difficult to determine whether the patient died from an accumulation of medication or from a so-called "euthanetic" drug mixture.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   
169.
This paper examines the process by which R&D results funded by the Office of Conservation and Renewable Energy (CE) of the US Department of Energy (DOE) have generated commercial applications. It looks at examples of technology-transfer procedures and activitees across three of CE's component offices that correspond to the major energy end-use sectors: transportation, buildings, and industry. On the surface, the conservation programs would appear to have little strategic consistency and, therefore, lack the clear leadership many seek in a technology-transfer program. However, as an alternative to strategic consistency, one may tailor the technology-transfer approach of each program to its unique circumstances. This paper presents case studies of such tailoring, in which the diversity of approaches mirrors the complexity of the energy end-use markets and the private-public interests that must be negotiated to successfully commercialize energy-saving innovations. The paper discusses the lessons learned about the conditions requiring adaptive design and the structures and practices that have been proven effective.  相似文献   
170.
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