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   2604篇
  免费   44篇
各国政治   126篇
工人农民   62篇
世界政治   152篇
外交国际关系   66篇
法律   1918篇
中国政治   21篇
政治理论   286篇
综合类   17篇
  2020年   30篇
  2019年   22篇
  2018年   22篇
  2017年   33篇
  2016年   40篇
  2015年   23篇
  2014年   38篇
  2013年   187篇
  2012年   60篇
  2011年   68篇
  2010年   36篇
  2009年   35篇
  2008年   57篇
  2007年   71篇
  2006年   71篇
  2005年   74篇
  2004年   72篇
  2003年   70篇
  2002年   70篇
  2001年   156篇
  2000年   123篇
  1999年   76篇
  1998年   26篇
  1995年   18篇
  1994年   22篇
  1993年   21篇
  1992年   63篇
  1991年   69篇
  1990年   61篇
  1989年   84篇
  1988年   83篇
  1987年   72篇
  1986年   76篇
  1985年   65篇
  1984年   35篇
  1983年   41篇
  1982年   19篇
  1981年   30篇
  1979年   28篇
  1978年   21篇
  1977年   27篇
  1976年   19篇
  1975年   31篇
  1974年   30篇
  1973年   31篇
  1972年   32篇
  1971年   24篇
  1970年   20篇
  1969年   24篇
  1968年   20篇
排序方式: 共有2648条查询结果,搜索用时 15 毫秒
261.
262.
263.
264.
265.
Interpretation of unusual wounds caused by firearms.   总被引:1,自引:0,他引:1  
The interpretation of the range of fire of gunshot wounds requires coordination of information and observations from the autopsy surgeon, scene investigator, and laboratory analyst. Opinions based on incomplete information often lead to misinterpretation of the wound. The effects of interposed targets such as clothing, windows, and body parts are discussed. Case examples are given for interposed targets that cause confusing patterns and even lead to misidentification of the points of entrance and exit of the projectile in the body. The splitting of tissue in areas of bony prominence can be mistaken for evidence of discharge of a firearm at close range.  相似文献   
266.

The influence of childhood contexts on adult blood pressure is an important yet understudied topic. Using a developmental perspective, this study examines the association between neighborhood socioeconomic disadvantage in early childhood (0–5?yrs), middle childhood (6–12?yrs) and adolescence (13–18?yrs) on subsequent blood pressure in young adulthood. Data were from 263 college students (52% Black; Mage?=?19.21 years) and neighborhood socioeconomic disadvantage was measured using a tract-level Area Deprivation Index. Neighborhood disadvantage in early childhood was significantly associated with diastolic blood pressure and explained 22% of the race difference between Black and White adults. The findings are consistent with the notion that early childhood may be a sensitive period for the effects of neighborhood disadvantage on blood pressure.

  相似文献   
267.
268.
269.
In a modern, plural society, there can be no settled agreement on the concrete legal content of a country's constitution. The idea of the constitution is nonetheless pivotal in contemporary, liberal-minded theories of political justification, such as the ones advanced by Jürgen Habermas and John Rawls. Justification in these theories depends finally on "constitutional patriotism," a consciously shared sentiment arising from an ethical assessment of their country by the country's people, according to which the country credibly pursues a certain regulative political ideal for which the constitution stands.  相似文献   
270.
This note contends that crop mixtures are employed by farmers primarily as risk precautions and that the immediate objective of farmers is not only one of profit maximisation but also of stability of income. The results of an income stability model employed to verify this hypothesis seem to agree relatively well with existing information in parts of Northern Nigeria.  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