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   1592篇
  免费   9篇
各国政治   39篇
工人农民   147篇
世界政治   29篇
外交国际关系   47篇
法律   1187篇
中国政治   8篇
政治理论   139篇
综合类   5篇
  2022年   4篇
  2021年   8篇
  2020年   5篇
  2019年   6篇
  2018年   89篇
  2017年   18篇
  2016年   102篇
  2015年   23篇
  2014年   16篇
  2013年   43篇
  2012年   130篇
  2011年   91篇
  2010年   10篇
  2009年   24篇
  2008年   12篇
  2007年   13篇
  2006年   17篇
  2005年   391篇
  2004年   104篇
  2003年   24篇
  2002年   13篇
  2001年   19篇
  1999年   13篇
  1996年   3篇
  1992年   21篇
  1991年   22篇
  1990年   29篇
  1989年   40篇
  1988年   28篇
  1987年   27篇
  1986年   30篇
  1985年   20篇
  1984年   13篇
  1983年   14篇
  1982年   2篇
  1980年   4篇
  1979年   10篇
  1978年   10篇
  1977年   5篇
  1975年   14篇
  1974年   24篇
  1973年   14篇
  1972年   16篇
  1971年   19篇
  1970年   13篇
  1969年   7篇
  1968年   11篇
  1967年   9篇
  1966年   5篇
  1965年   5篇
排序方式: 共有1601条查询结果,搜索用时 187 毫秒
1.
2.
3.
Stab wounds were made in parenchymatous organs (e.g. liver, spleen, kidneys, lungs) using a variety of instruments. The shape of the resulting canal was investigated by X-ray analysis after introduction of an X-ray contrast medium. The best contrast was obtained using a contrast medium containing barium. The shape of the canal gave a direct representation of the outline of the instrument used. The width of the canal was however, always several millimeters smaller than the corresponding blade of the instrument. The position of the blade back in single-edged blades could be demonstrated with stronger contrast.  相似文献   
4.
Akyeampong  Emmanuel 《African affairs》2005,104(416):429-447
This article interrogates the emergence of drug traffickingin contemporary Ghana and West Africa within the context ofa global political economy, situated within a deeper historicalperspective. It examines the earlier trafficking of cannabisalong the coast of West Africa in the colonial period, and thelater transnational networks that have emerged to promote internationaldrug trafficking (cocaine and heroin). The article probes howthe African diaspora and international travel service theseemerging drug networks in Ghana, West Africa, Europe and theAmericas. It suggests that the concept of an ‘ideologicaldiaspora’ could shed light on a shared global popularculture, which constitutes a counter culture and rationalizescriminal activities.  相似文献   
5.
The English law of theft is confusing and problematic in principle. Since the introduction of the Theft Act 1968 there has been inconsistency in the interpretation of appropriation as court and commentators have grappled with the intuition that appropriation must entail some subjective element and cannot be purely objective. Although subjectivity is traditionally associated with culpability rather than with conduct, it is argued that some acts can be subjective and yet factual and stand as causes to effects. Appropriation is such an act, its necessary and sufficient condition being a mindset, here termed proprietary subjectivity, on the part of the actor. It is argued that clarification of the concept of appropriation can help to resolve misperceived problems. Such clarification will also reveal other problems in the law of theft. Some tentative comments de lege ferenda are made suggesting how these problems can be addressed.  相似文献   
6.
7.
This paper describes a collaborative exercise intended to demonstrate whether uniformity of DNA profile results could be achieved between different European laboratories. It was shown that this goal can be obtained provided that a common protocol is followed (specifically the use of a common electrophoretic buffer as being the most important parameter). Generally, lower molecular weight loci (with lower molecular weight fragments) such as YNH24 perform better than higher molecular weight loci such as MS43a. The results of the exercise are discussed in relation to the objectives of the European DNA profiling group (EDNAP).  相似文献   
8.
Mit der Einführung einer Entgeltpflicht für die Entnahme von Wasser in Nordrhein-Westfalen ist der erlaubnisfreie wasserrechtliche Eigentümergebrauch in den Mittelpunkt des Interesses gerückt. Denn wer Wasser im Rahmen des Eigentümergebrauchs aus einem oberirdischen Gewässer entnimmt, ist von dieser Entgeltpflicht befreit. Der folgende Beitrag erläutert die im Zusammenhang mit der Gewinnung nichtenergetischer Rohstoffe insoweit relevanten Fragen. * Die Verfasser sind, Mitarbeiter der Anders u.Thomé Rechtsanwaltsgesellschaft mbH in Krefeld  相似文献   
9.
Der Wald hat für uns ?konomische, ?kologische, soziale und kulturelle Bedeutung. Leider ist in letzter Zeit die kulturelle Bedeutung im Vergleich zur ?kologischen Bedeutung ins politische Abseits geraten. Nun will man das seit 1975 geltende Bundeswaldgesetz novellieren. Dabei sollte zur besseren Berücksichtigung des Denkmalschutzes bei der Definition des Waldes klargestellt werden, dass Park-, Garten- und Friedhofsanlagen kein Wald im Sinne des Bundeswaldgesetzes sind. Die Bedeutung des Waldbodens als Archiv der Natur- und Kulturgeschichte muss betont werden. Nicht zuletzt wegen der angestrebten Eintragung der Deutschen Buchenw?lder in die Liste des Erbes der Welt muss zum Ausdruck kommen, dass Deutschland die europ?ischen und internationalen Bemühungen zum Erhalt des Kultur- und Naturerbes wie das übereinkommen zum Schutz des Kultur- und Naturerbes der Welt von 1972 unterstützt.  相似文献   
10.
Quadratic pieces of fleece measuring 16 mm2 were soaked with 10 different blood-samples in the dilution steps of 1:1, 1:10, 1:100, 1:1000, respectively, and were tested in blood group typing and identification tests of forensic serology. The above spezified dilutions correspond with 5 microliters, 0.5 microliter, 0.05 microliter and 0.005 microliter of blood, respectively. The detection limit of the microspectrometric test for blood was the dilution 1:10, of the porphyrine test a dilution above 1:100, whereas the preliminary test for blood (peroxidase) succeeded always up to a dilution of 1:1000 and the species determination by the radial immunodiffusion test in agar gels succeeded in most cases op to a dilution of 1:1000. The detection limit of the anti-human globulin inhibition test was between the dilution steps 1:10 and 1:100 when non-titrated and undiluted anti-human globulin serum was used. Gc- and ABO-grouping were possible up to a dilution of 1:100 and were thus the most sensitive grouping systems. Phenotyping of the enzyme-systems and the Gm/Km-system usually required stains with considerably higher blood concentrations i.e. stains of undiluted blood.  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