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   18475篇
  免费   758篇
各国政治   817篇
工人农民   737篇
世界政治   1289篇
外交国际关系   567篇
法律   11928篇
中国共产党   4篇
中国政治   106篇
政治理论   3677篇
综合类   108篇
  2021年   105篇
  2020年   287篇
  2019年   353篇
  2018年   419篇
  2017年   498篇
  2016年   497篇
  2015年   381篇
  2014年   405篇
  2013年   1876篇
  2012年   439篇
  2011年   502篇
  2010年   456篇
  2009年   479篇
  2008年   516篇
  2007年   459篇
  2006年   513篇
  2005年   449篇
  2004年   456篇
  2003年   421篇
  2002年   422篇
  2001年   686篇
  2000年   647篇
  1999年   454篇
  1998年   293篇
  1997年   264篇
  1996年   229篇
  1995年   213篇
  1994年   233篇
  1993年   237篇
  1992年   363篇
  1991年   391篇
  1990年   360篇
  1989年   369篇
  1988年   351篇
  1987年   355篇
  1986年   385篇
  1985年   353篇
  1984年   305篇
  1983年   319篇
  1982年   206篇
  1981年   206篇
  1980年   156篇
  1979年   227篇
  1978年   145篇
  1977年   142篇
  1976年   125篇
  1975年   96篇
  1974年   129篇
  1973年   137篇
  1972年   123篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
A dissecting intramural haematoma of the coronary artery is an infrequent cause of sudden and unexpected death. Most cases are women and in a significant number of these women, the haematoma occurred at term to 80 days postpartum. Because the intimal rupture and communication with the lumen were not found in most of the cases, the site of rupture has been considered to be a vasa vasorum. The authors report on a case of one woman who was at a later postpartum period (106 days). The microscopic finding of the dissected coronary artery revealed two intimal tears in a section. The case showed that the dissecting intramural haematoma of the coronary artery is caused not only by the rupture of the vasa vasorum but also by the rupture of the intima.  相似文献   
83.
Distinctive blunt force injuries caused by a crescent wrench.   总被引:1,自引:0,他引:1  
  相似文献   
84.
85.
86.
Current research suggests that a husband's substance abuse is correlated with severity of physical abuse and the woman's decision to leave a violent situation. Often, only the battered woman's report of abuse is available. This study compares women's reports of their partners' substance use/abuse with their partners' report using a brief measure of polydrug and alcohol abuse, the Substance Abuse Subtle Screening Inventory (SASSI) and the Conflict Tactics Scale (CTS). Data were analyzed for 25 recovery couples and 25 nonrecovery couples. The correlations for all 50 couples between the male's reported use and the female's report of her partner's use on the SASSI and the CTS were significant on all but one of the CTS scales. They ranged on SASSI from .73 to .33 and from .31 to .06 on the CTS. This suggests that the SASSI and possibly the CTS could be used as valuable tools for assessing women's reports of their partner's substance use/abuse.  相似文献   
87.
A final course, or project is a standard requirement in Master of Public Administration (MPA) programs. This requirement is intended to permit the student to demonstrate advanced ability in the discipline. This article examines one such course at Florida State University. The course included readings, exercises, oral presentations, and a written report. This author assesses the merits and drawbacks of the course as well as notes the unintended consequences that resulted. In concluding the article, the author makes several recommendations for future courses based on the experiences gained in the Florida state model.  相似文献   
88.
Considerable variations in infant mortality rates have occurred within the low-lying region of northern Germany's East Frisia. Individual parishes can be assigned to three specific groups by registered mortality levels for the period 1740–1839. Differences also existed between parishes containing Geest (heathland), bogs, and marshland reflecting specific geographical and environment factors, as well as the structure of the local economy. In both Geest and bog parishes, the level of infant mortality and its trend over time were not homogeneous. In the two marshy river parishes, only environmental factors were significant; both registered the lowest rates of infant mortality. They had fertile soil, extensive grazing land, an exceptionally high number of large agricultural holdings, and households that were above average in size. By contrast, the highest rates of infant mortality were found in one bog and two Geest parishes, but these communities remained heterogeneous in terms of geographical size and population growth and density.  相似文献   
89.
Abstract
The author presents a relatively formal theory of the rule of law which includes three basic components: conceptual, institutional and axiological. He then emphasizes the differences between a formal and a substantive theory of the rule of law and highlights the advantages and limits of the former. Finally, the author indicates the importance of this type of theory, namely the values it implies such as predictability, justified reliance, autonomous choice, minimization of disputes and legitimacy.**  相似文献   
90.
The concentration of thyreoglobulin (tg) was determined for death caused by hanging, strangulation by ligature, and throttling. Cases of sudden death (traumatic aortic rupture, penetrating wounds of the heart) were used for comparison. The mean values in cases of hanging (149.9±202.3 ng/ml), strangulation by ligature (193.1±173.3), manual strangulation (561.6±173.9) are distinguishable from violent acute deaths (23.3±27.6) and living healthy individuals (17.3±16.1). By means of statistical comparisons, significant differences were found between throttling and strangulation by ligature and between throttling and hanging (adjusted P<0.001). In connection with examination of the bodies high tg values can be regarded as a vital reaction in obstructive asphyxia.  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