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   16274篇
  免费   219篇
各国政治   669篇
工人农民   1355篇
世界政治   912篇
外交国际关系   676篇
法律   9177篇
中国政治   120篇
政治理论   3552篇
综合类   32篇
  2021年   57篇
  2020年   112篇
  2019年   160篇
  2018年   1444篇
  2017年   1380篇
  2016年   1197篇
  2015年   179篇
  2014年   203篇
  2013年   1059篇
  2012年   380篇
  2011年   1108篇
  2010年   1161篇
  2009年   780篇
  2008年   945篇
  2007年   889篇
  2006年   214篇
  2005年   248篇
  2004年   406篇
  2003年   328篇
  2002年   190篇
  2001年   352篇
  2000年   336篇
  1999年   236篇
  1998年   141篇
  1997年   135篇
  1996年   105篇
  1995年   134篇
  1994年   117篇
  1993年   94篇
  1992年   154篇
  1991年   172篇
  1990年   172篇
  1989年   159篇
  1988年   146篇
  1987年   160篇
  1986年   131篇
  1985年   129篇
  1984年   131篇
  1983年   113篇
  1982年   86篇
  1981年   91篇
  1980年   54篇
  1979年   90篇
  1978年   55篇
  1977年   50篇
  1976年   41篇
  1975年   46篇
  1974年   55篇
  1973年   61篇
  1972年   44篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
A simple and sensitive method is described for quantitative analysis of chlorpromazine in blood, serum, urine and tissue homogenate. The chlorpromazine cation radical produced by adding perchloric acid and 2,3-dichloro-5,6-dicyano-p-benzoquinone to the sample can be detected by the ESR method at room temperature. The sensitivity limit is 10 ng, that is, 20 μl of the solution containing 0.5 μg chlorpromazine/ml. The time needed for the measurement is within 10 min. The chlorpromazine radical thus produced is very stable; for example, 95% of the radical was observed after 24 h. The advantage of this method is discussed by comparing with the ordinary spectrophotometry which requires the purification of the sample.  相似文献   
63.
To demonstrate that norms have independent causal power, constructivists de-emphasise material factors related to state interests and highlight social factors. Similarly, they conceptualise international organisations as autonomous from state influence, and focus on cases featuring non-state actors that stimulate a “tipping point” of norm diffusion among states in advance of state sponsorship. By contrast, this article utilises an historical materialist approach that admits both social and material data to examine the contrasting case of population control. It finds that US corporate foundations, eugenist demographers, feminist birth control activists and related NGOs conceptualised and promoted population control in the United States, at the United Nations, and across developing countries. However, the tipping point of norm diffusion occurred only after the United States publicly advocated population control. Indeed, material and social factors were inextricably bound together.  相似文献   
64.
65.
66.
This article focuses on media reportage of offensive juveniles, past and present, to elicit lessons that the twenty-first century can learn from the Victorian past in terms of diversionary responses. How to prevent vulnerable juveniles sliding into dangerous criminality is a continuing preoccupation: the issue explored in this article relates to the creation of the identity of the criminal juvenile. In utilising the concept of semi-criminality to label certain types of juvenile anti-social behaviour the Victorians avoided actual criminalisation of socially offensive but, in legal terms, minor behaviours. The reasons for and negative consequences of the abandonment of this concept by the modern age are explored, including the reconceptualisation of where responsibility for juvenile offending lies in the modern era.  相似文献   
67.
This article revisits the Baroda Incident 1875, providing a detailed examination of the Enquiry or ‹trial’ for the first time, and locating that examination in the wider socio-cultural context of the nineteenth century British Empire (especially the Raj) and the exporting of the ‹British’/English legal culture to the Empire. The implications of the establishing of British principles of justice, including the value placed upon Indian-generated evidence and testimony by the courts, are explored, in order to establish the Baroda Incident as a significant miscarriage of justice. Using historical methodologies as well as postcolonial insights, it demonstrates that the concepts of justice on which the British prided themselves were intrinsincally racialised as well as gendered, with profound modern resonances. Dr. Judith Rowbotham is a Reader, School of Arts and Humanities, Nottingham Trent University.  相似文献   
68.
Aggressive pursuit of free trade agreements (FTAs) and customs unions (CUs) by major and minor trading powers alike challenges the conventional wisdom in favor of such pursuit – competitive liberalization. An equally plausible explanation for an active bilateral and regional trade agreement policy, one which effectively de-emphasizes multilateralism, may be competitive imperialism. The protection and enforcement of intellectual property rights is one area in which new provisions, going beyond multilateral rules, are being negotiated and written into FTAs and CUs. Such provisions may yield insights into which characterization of bilateralism and regionalism – competitive liberalization or competitive imperialism – is more apt. Rice Distinguished Professor, The University of Kansas, School of Law, Green Hall, 1535 West 15th Street, Lawrence, KS 66045-7577, USA. Tel. +1-785-8649224. Fax. +1-785-8645054. www.law.ku.edu. J.D., Harvard (1989); M.Sc., Oxford (1986); M.Sc., London School of Economics (1985); A.B., Duke (1984). Marshall Scholar (1984-86). Member, Council on Foreign Relations, Royal Society for Asian Affairs, and Fellowship of Catholic Scholars. Author, Modern GATT Law (Sweet & Maxwell 2005), International Trade Law: Theory and Practice (2nd ed. 2000, 3rd ed. forthcoming 2007-08), and Trade, Development, and Social Justice (Carolina Academic Press 2003). I am thankful to my Research Assistant, Mr. David R. Jackson (B.A., George Mason University, 1992; J.D. Class of 2007, University of Kansas), for his indispensable help on this work. I also am grateful to Dr. Mohammed El Said, University of Central Lancashire (UCLAN), for his consistent support and friendship, and for what he has taught and continues to teach me about international trade and intellectual property.  相似文献   
69.
Esophageal and tracheal fistulas, which occur in 0.05% of medicolegal autopsies, were demonstrated in three cases by a postmortem radiographic technique using silicone rubber/lead oxide as a contrasting medium that vulcanizes at room temperature. In one 83-year-old male, a tracheoesophageal fistula was detected, which had developed after surgical repair of an esophageal rupture caused by a flexible fiberoptic endoscope. In a second case, carcinoma of the esophagus in a 78-year-old male had eroded the trachea and arcus of the aorta creating a fatal tracheoesophagoaortic fistula. In a third case, 55-year-old female developed a tracheobrachicephalic artery fistula as a result of an infiltrating cystic adenocarcinoma of the trachea, resulting in a fatal hemorrhage into the trachea. The results of this study indicate that diagnostic radiologic methods using a vulcanized contrasting medium are useful in supplementing normal dissection in autopsy cases with suspected fistulas of the esophagus or trachea.  相似文献   
70.
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