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   870篇
  免费   36篇
各国政治   29篇
工人农民   110篇
世界政治   76篇
外交国际关系   34篇
法律   434篇
中国政治   6篇
政治理论   214篇
综合类   3篇
  2023年   2篇
  2022年   3篇
  2021年   2篇
  2020年   10篇
  2019年   17篇
  2018年   25篇
  2017年   28篇
  2016年   31篇
  2015年   31篇
  2014年   26篇
  2013年   140篇
  2012年   29篇
  2011年   21篇
  2010年   20篇
  2009年   19篇
  2008年   41篇
  2007年   40篇
  2006年   36篇
  2005年   32篇
  2004年   36篇
  2003年   31篇
  2002年   30篇
  2001年   17篇
  2000年   11篇
  1999年   9篇
  1998年   10篇
  1997年   14篇
  1996年   12篇
  1995年   15篇
  1994年   12篇
  1993年   13篇
  1992年   11篇
  1991年   5篇
  1990年   12篇
  1989年   16篇
  1988年   8篇
  1987年   4篇
  1986年   8篇
  1985年   10篇
  1984年   9篇
  1983年   2篇
  1982年   8篇
  1981年   8篇
  1980年   10篇
  1978年   5篇
  1977年   7篇
  1976年   8篇
  1975年   4篇
  1971年   2篇
  1969年   1篇
排序方式: 共有906条查询结果,搜索用时 46 毫秒
121.
Springen K 《Newsweek》2006,148(21):90-91
  相似文献   
122.
123.
124.
Springen K 《Newsweek》2006,148(14):70, 72
  相似文献   
125.
This report highlights the importance of undertaking immunohistochemical staining of the brains of infants who die unexpectedly, as it may not only assist with the evaluation of the cause of death in an individual infant but may also help with the clinical management of subsequent siblings. A 5-month-old male infant who died suddenly was found to have diffuse beta-amyloid precursor protein (beta-APP) staining in the brain, with no unusual features in his history, death scene examination, routine autopsy dissection, and ancillary tests to suggest any definite cause of death. Due to the beta-APP staining, the possibility of previous episodes of occult trauma, apparent life threatening events (ALTEs), and accidental or inflicted suffocation was raised in the autopsy report. As detailed analyses and investigations provided no supportive evidence for trauma or inflicted injury, hypoxia was clinically considered the most likely cause. Because of these concerns, sleeping oxygen saturation levels were monitored following the birth of a subsequent sibling who had normal APGAR scores and no evidence of any health problems. Oxygen desaturation to 70% occurred in association with a color change while on the postnatal ward, and a subsequent polysomnogram showed multiple episodic significant desaturations to around 80% in association with central apnea. Other testing was unremarkable. These cases demonstrate that beta-APP staining of the brain may not only provide clues as to possible mechanisms of death in pediatric forensic cases but may indicate a need for careful clinical evaluation of subsequent siblings for possible central apnea requiring oxygen therapy.  相似文献   
126.
127.
128.
This article highlights the findings of a survey of court-connected programs for divorcing parents in the state of Michigan. Program and attendance information is given, and a typical program in Michigan is described. Program development and implementation issues, such as goals and program material, program management, court-mandated attendance, and program evaluation are discussed.  相似文献   
129.
Since 1970, state and local governments have experienced two “insurance crises;” the first occurred in the mid- to late-1970s and the second in the mid-80s. The result has been a twenty-year period of time in which state and local governments have been able to afford insurance only intermittently-if insurance has been available at all. In response to this problem, local governments, government associations, and state governments created alternative risk-finartcing mechanisms to provide coverage for themselves. These mechanisms, commonly referred to as self-insurance pools, enable local governments within a state to pool together risks and resources to finance the costs of fortuitous losses. In 1988, the first comprehensive examination of pooling practices was undertaken through a nationwide survey. This article reports the findings from the first follow-up study since the 1988 survey and further extends knowledge of pooling and pooling practices.  相似文献   
130.
The results of gunshot residue (GSR) tests in 112 suicide cases investigated by the U.S. Army Criminal Investigation Command over a ten-year period are described. Only suicide cases in which there was certainty that the victim fired a weapon were examined in an effort to reduce ambiguous results. Previous case work research by Rudzitis indicated that positive GSR test results were encountered in suicides 62% of the time using various combinations of neutron activation analysis (NAA) and atomic absorption spectrophotometry (AAS). Threshold values of 0.2-micrograms antimony and 0.3-micrograms barium (0.2-micrograms antimony and 0.5-micrograms barium after 1985) used by the U.S. Army Criminal Investigation Laboratory resulted in positive GSR results in suicide cases 38% of the time. The effects of time, location of body, handling of the body, weapon type, caliber, and condition of the hands on GSR results are examined. Case studies involving suicides by unit armorers are discussed.  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