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   14097篇
  免费   638篇
各国政治   677篇
工人农民   411篇
世界政治   944篇
外交国际关系   530篇
法律   9345篇
中国共产党   1篇
中国政治   57篇
政治理论   2644篇
综合类   126篇
  2020年   220篇
  2019年   255篇
  2018年   300篇
  2017年   340篇
  2016年   375篇
  2015年   307篇
  2014年   300篇
  2013年   1501篇
  2012年   349篇
  2011年   359篇
  2010年   348篇
  2009年   366篇
  2008年   357篇
  2007年   328篇
  2006年   345篇
  2005年   306篇
  2004年   325篇
  2003年   301篇
  2002年   298篇
  2001年   571篇
  2000年   509篇
  1999年   425篇
  1998年   184篇
  1997年   171篇
  1996年   146篇
  1995年   161篇
  1994年   173篇
  1993年   166篇
  1992年   291篇
  1991年   318篇
  1990年   285篇
  1989年   302篇
  1988年   262篇
  1987年   272篇
  1986年   280篇
  1985年   253篇
  1984年   217篇
  1983年   235篇
  1982年   158篇
  1981年   152篇
  1980年   113篇
  1979年   209篇
  1978年   130篇
  1977年   116篇
  1976年   103篇
  1975年   111篇
  1974年   136篇
  1973年   130篇
  1972年   106篇
  1971年   96篇
排序方式: 共有10000条查询结果,搜索用时 250 毫秒
51.
This article argues that, despite environmental issues climbing higher on the political agenda and considerable recent policy activity, rhetoric is not matched by reality in our efforts to manage the Australian environment. We integrate the imperatives emerging from the policy and sustainability literatures and from actual policy, with detailed work on wildlife conservation in Victoria's Central Highlands. Our analysis demonstrates that, rather than undertaking the more intensive policy and 'adaptive management' that is needed, governments are often doing less and may actually be 'taking their hands of their wheel'. Some public policy and administration implications of the emerging policy field of sustainability are illustrated.  相似文献   
52.
53.
On the one hand the following case demonstrates the problems of finding a dead body in the bathroom and on the other hand the importance of postmortem x-ray examinations. The corpse of an 65-year-old woman was discovered in her bath tub. At the body's feet there was a hair dryer. Investigations concerning murder were negative, circumstances appeared to be unsuspicious. That was why a postmortem examination was not performed. -4 years later murder had to be considered. After manual strangling the deceased and the hair dryer were layed into the bath tub. The corpse was exhumed and taken to a forensic autopsy. It was found that the hyoid bone and the superior horn of the thyroid cartilage were both fractured on the right. Damages caused by the preparation itself were excluded by using serial roentgenographs. These observations in combination with histological findings and the results of further investigations convincingly supported the suspicion of strangling by hand.  相似文献   
54.
Misidentification syndromes have been studied from a variety of perspectives, including phenomenological, biological, and nosological approaches. More recently, misidentification syndromes have been studied from a psychiatric-legal perspective, especially with regards to the problem of dangerousness. Capgras syndrome and other syndromes of misidentification can lead to hostile mood and subsequent physical violence. Little attention has so far been devoted to children as the objects of the psychotic person's misidentification delusion(s). We provide a review of cases from the anglophonic literature that have children as the misidentified objects, add three new cases, and then discuss the relationship between misidentification and potential harm to these children.  相似文献   
55.
56.
A gas chromatographic (GC) fingerprint method, based on the presence or absence of six congeners, was developed for illicit cocaine samples. The fingerprint utilizes the relative abundances of these congeners towards each other, disregarding cocaine as the main constituent, and can be expressed numerically or graphically in the form of pictograms for rapid visual comparison. The method can be applied directly to a solution of the sample in chloroform, without previous workup procedures. More than 70 unrelated samples were analyzed and a great variation was observed in the parameter composition. On the other hand, a remarkable similarity could be seen between related samples. The GC fingerprint method may be considered an important contribution for sample comparison, as is exemplified by a subdivision of the analyzed samples in different categories, based on the number and types of congeners found.  相似文献   
57.
During the past decade the field of psychology of law has changed considerably. Accompanying the growth of research and practice, there has been an increase in offerings of courses in this field. The courses are offered at both undergraduate and graduate levels and cover a wide spectrum of interests. The types of courses currently being offered and the student samples enrolling in the courses are examined. In addition, a review of the major textbooks used in the courses is provided.  相似文献   
58.
59.
60.
A method ist described to determine the CO-content in the tissue of muscles. The prepared tissue is pulverized in a swinging mill at the temperature of liquid nitrogen. Parts of the powder are weighed into headspace vessels. Carbon monoxide ist ejected by a formerly described method and measured gaschromatographically. The Fe-content is determined after an acid disintegration by AAS. Acute intoxications lead to higher CO-contents in heart than in periphere muscles. Chronic exposure to carbon monoxide does not produce these differences.  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