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   17515篇
  免费   1356篇
各国政治   730篇
工人农民   578篇
世界政治   1335篇
外交国际关系   511篇
法律   12239篇
中国共产党   1篇
中国政治   121篇
政治理论   3221篇
综合类   135篇
  2020年   393篇
  2019年   415篇
  2018年   505篇
  2017年   545篇
  2016年   566篇
  2015年   509篇
  2014年   506篇
  2013年   1833篇
  2012年   390篇
  2011年   495篇
  2010年   640篇
  2009年   606篇
  2008年   419篇
  2007年   395篇
  2006年   518篇
  2005年   378篇
  2004年   362篇
  2003年   366篇
  2002年   332篇
  2001年   610篇
  2000年   491篇
  1999年   427篇
  1998年   236篇
  1997年   213篇
  1996年   168篇
  1995年   195篇
  1994年   210篇
  1993年   192篇
  1992年   311篇
  1991年   366篇
  1990年   321篇
  1989年   347篇
  1988年   320篇
  1987年   306篇
  1986年   319篇
  1985年   353篇
  1984年   338篇
  1983年   312篇
  1982年   239篇
  1981年   218篇
  1980年   207篇
  1979年   232篇
  1978年   161篇
  1977年   128篇
  1976年   129篇
  1975年   126篇
  1974年   140篇
  1973年   128篇
  1972年   107篇
  1971年   96篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
211.
212.
213.
214.
215.
216.
217.
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   
218.
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   
219.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques.  相似文献   
220.
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   
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