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   1107篇
  免费   45篇
各国政治   45篇
工人农民   170篇
世界政治   77篇
外交国际关系   53篇
法律   527篇
中国政治   14篇
政治理论   258篇
综合类   8篇
  2023年   7篇
  2021年   5篇
  2020年   11篇
  2019年   24篇
  2018年   23篇
  2017年   35篇
  2016年   32篇
  2015年   18篇
  2014年   25篇
  2013年   156篇
  2012年   41篇
  2011年   50篇
  2010年   29篇
  2009年   35篇
  2008年   44篇
  2007年   42篇
  2006年   59篇
  2005年   37篇
  2004年   34篇
  2003年   42篇
  2002年   41篇
  2001年   20篇
  2000年   25篇
  1999年   15篇
  1998年   9篇
  1997年   17篇
  1996年   16篇
  1995年   19篇
  1994年   17篇
  1993年   10篇
  1992年   17篇
  1991年   20篇
  1990年   12篇
  1989年   13篇
  1988年   14篇
  1987年   13篇
  1986年   9篇
  1985年   12篇
  1984年   8篇
  1983年   9篇
  1982年   15篇
  1981年   7篇
  1980年   11篇
  1979年   11篇
  1978年   8篇
  1977年   7篇
  1976年   5篇
  1975年   4篇
  1974年   5篇
  1973年   4篇
排序方式: 共有1152条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
995.
Cause of death rulings in cases when the concentration of a drug or drugs is higher than observed following therapeutic use are generally straightforward “drug deaths.” However, when toxicology testing identifies drug concentrations consistent with therapeutic use or detects no drugs at all, then the cause of death determination is more complicated. Given the rapidity and protean manifestations of anaphylaxis, it should be considered in deaths where no other cause of death is apparent in a suspected drug death. This article reports two cases where an anaphylactic reaction was observed following either the actual or alleged use of therapeutic formulations of buprenorphine intravenously.  相似文献   
996.
Note     
  相似文献   
997.
998.
This paper reviews the literature on poverty dynamics in the U.S. It surveys the most prevalent data, theories, and methods used to answer three key questions: How likely are people to enter, exit, and reenter poverty? How long do people remain in poverty? And what events are associated with entering and exiting poverty? The paper then analyzes the combined findings of the literature, discussing overarching patterns of poverty dynamics, differences among demographic groups, and how poverty probabilities, duration, and events have changed over time. We conclude with a discussion of the policy implications of these findings and avenues for future research. © 2008 by the Association for Public Policy Analysis and Management.  相似文献   
999.
Abstract: In 2002 the authors were asked to examine the skeletal remains of an individual with a known history of severe cerebral palsy (CP) who was 21–23 years old at death. Skeletal age estimates of 11–15 years and dental age estimates of c. 16 years are younger than the known age of the decedent. Skeletal analysis also identified dental pathologies such as chronic tooth grinding and substantial calculus deposits. Scarce literature exists on forensic human remains cases with CP, and this study contrasts the age discrepancy and other features of this case with typical clinical characteristics of CP. A review of the CP literature suggests that delayed skeletal maturation and dental pathologies such as those observed in this case are indicative of complications related to CP. This article may alert future investigators to some of the osteological signs of CP and the probability that age indicators may be misleading.  相似文献   
1000.
Abstract: Reburial of human remains and concerns regarding pathogens and pollution prompted the search for, and assessment of, a 156-year-old graveyard. To locate this graveyard, historic and anecdotal information was compared to landscape interpretation from aerial photography. To assess and map the contents, surface collapses, metal detector indications, and ground-penetrating radar (GPR) were used. Some 170 anomalies compatible with burials were identified on 200 MHz GPR data, 84 of which coincided with surface collapses, suggesting both noncollapsed ground, subsequent infill, and multiple inhumations. The graveyard was possibly split into Roman Catholic plots with multiple inhumations; Protestant plots; and a kileen, or graveyard for the unbaptized (often children). The work serves as one approach to the location and mapping of recent and historic unmarked graves.  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