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   569篇
  免费   19篇
各国政治   36篇
工人农民   35篇
世界政治   67篇
外交国际关系   13篇
法律   236篇
中国政治   16篇
政治理论   182篇
综合类   3篇
  2021年   5篇
  2020年   5篇
  2019年   13篇
  2018年   9篇
  2017年   12篇
  2016年   14篇
  2015年   9篇
  2014年   17篇
  2013年   102篇
  2012年   14篇
  2011年   21篇
  2010年   10篇
  2009年   8篇
  2008年   17篇
  2007年   18篇
  2006年   24篇
  2005年   19篇
  2004年   19篇
  2003年   15篇
  2002年   15篇
  2001年   18篇
  2000年   15篇
  1999年   12篇
  1998年   7篇
  1997年   11篇
  1996年   10篇
  1995年   9篇
  1994年   9篇
  1993年   12篇
  1991年   5篇
  1990年   3篇
  1989年   4篇
  1988年   5篇
  1987年   5篇
  1986年   11篇
  1985年   7篇
  1984年   11篇
  1983年   3篇
  1982年   6篇
  1981年   5篇
  1979年   10篇
  1978年   4篇
  1977年   3篇
  1976年   5篇
  1975年   3篇
  1971年   3篇
  1969年   3篇
  1968年   4篇
  1967年   5篇
  1943年   2篇
排序方式: 共有588条查询结果,搜索用时 15 毫秒
461.
The analysis of hair for drugs of abuse is becoming increasingly popular and is under consideration by the Division of Health and Human Services as a possible alternative or adjunct to urinalysis in workplace programs. The detection of cocaine in human hair using a commercially available micro-plate enzyme immunoassay is described for the first time. Sample size and incubation time were the major variables in the optimization of the method. In order to validate the procedure, the method was applied to 105 consecutive hair samples routinely received into our laboratory. The samples were simultaneously analyzed by the Micro-Plate immunoassay (EIA), as well as our current fluorescence polarization immunoassay (FPIA) procedure and gas chromatography-mass spectrometry (GC/MS). The sensitivity of the EIA and FPIA assays were 75% and 67.8% respectively; specificity 97.4% and 80.5% respectively; and efficiency 91.4 and 77.1% respectively. The Micro-Plate EIA was shown to be a valid alternative to other immunoassay screening methods for the detection of cocaine in hair by demonstrating increased sensitivity, specificity and efficiency over our current technique.  相似文献   
462.
463.
To date, the screening of meconium for the determination of tobacco exposure in newborns has proven difficult. It was hypothesized that cotinine forms reversible Schiff base bonds with free amino functions on proteins, therefore, hydrolysis of meconium would be necessary for the detection of 'free' cotinine. One-hundred-and-two (102) meconium samples received into our laboratory were extracted using a routine non-hydrolysis screening procedure for drugs of abuse. Separate aliquots of the specimens were hydrolyzed and re-extracted according to the same procedure. The results of the two methods were compared using a highly specific cotinine micro-plate enzyme immunoassay procedure (EIA). Of the non-hydrolyzed samples, 33% were positive for cotinine, while 79% of the hydrolyzed samples were cotinine-positive. Common drugs of abuse did not interfere with the analysis. Micro-plate EIA provides a rapid, simple and reliable screening method for the determination of cotinine in meconium following hydrolysis and extraction. In general, the meconium specimens received into our laboratory are from newborns considered to be at risk for post-natal problems due to suspected drug and/or alcohol abuse during pregnancy.  相似文献   
464.
Reviews     
R. W. Davies, The Industrialisation of Soviet Russia 3: The Soviet Economy in Turmoil. 1929–1930. London: Macmillan, 1989, xx+601 pp., £47.50.

Peter Nolan, The Political Economy of Collective Farms: An Analysis of China's Post‐Mao Rural Reforms. Cambridge: Polity Press, 1988, viii+259 pp., £29.50.

Adam Zwass, The CMEA: The Thorny Path from Political to Economic Integration. Armonk, NY: M E Sharpe inc., 1989, xiii+268 pp., $45.00.

Szymon Jakubowicz, Wer rettet Polens Wirtschaft? Das Ringen urn die Arbeiterselbstverwaltung. (Who will save Poland's Economy? The Struggle about Workers’ Self‐Management). Freiburg im Breisgau: Herder Taschenbuch Verlag, 1989, 334 pp., DM18.90.

Jim Riordan ed., Soviet Youth Culture. London: Macmillan, 1989, x+148 pp., £27.50 h/b, £9.95 p/b.

Richard Sakwa, Soviet Politics: An Introduction. London: Routledge, 1989, xvi+356 pp., £12.95 p/b.

Walter D. Connor, Socialism's Dilemmas: State and Society in the Soviet Bloc. New York: Columbia University Press, 1988, x+299 pp., $37.00.

R. W. Davies, Soviet History in the Gorbachev Revolution. Basingstoke and London: Macmillan in association with the Centre for Russian and East European Studies, University of Birmingham, 1989, viii+232 pp., £29.50 h/b, £7.99 p/b.

Takayuki Ito, ed. Facing Up to the Past: Soviet Historiography under Perestroika. Sapporo: Slavic Research Center, Hokkaido University, 1989, 290 pp.

Seweryn Bialer and Michael Mandelbaum, The Global Rivals: The Soviet‐American Contest for Supremacy. London: I. B. Tauri's, 1989, 220 pp., £14.95.

Matthew Evangelista, Innovation and the Arms Race. New York: Cornell University Press, 1988, xvi+ 300 pp., $32.95.

Steven Merritt Miner, Between Churchill and Stalin: The Soviet Union, Great Britain, and the Origins of the Grand Alliance. North Carolina: University of North Carolina Press, 1989, 319 pp., $39.60.

Olimpiad S. Ioffe, Soviet Civil Law, ser. Law in Eastern Europe, no. 36. Dordrecht, Boston, MA, Lancaster: Reidel, 1988, ix+382 pp.

Stephen White, Soviet Communism: Programme and Rules. London and New York: Routledge, 1989, vii+141 pp., £25.00.

Orest Subtelny, Ukraine: A History. Toronto, Buffalo, NY, and London: The University of Toronto Press in association with the Canadian Institute of Ukrainian Studies, 1988, xii+666 pp., £35.00, $57.50.

Francesco Benvenuti, The Bolsheviks and the Red Army, 1918–1922, translated by Christopher Woodall. Cambridge: Cambridge University Press, 1988, viii+264 pp., £27.50, $44.50.  相似文献   

465.
Reviews     
Susan Gross Solomon (ed.), Pluralism in the Soviet Union. Essays in Honour of H. Gordon Skilling. London: Macmillan, 1983, xiii + 179 pp. £20.00.

George Yaney. The Urge to Mobilize: Agrarian Reform in Russia, 1861–1930. Urbana, Chicago, London: University of Illinois Press, 1982, xii + 599 pp. £18.75.

Roy Medvedev, All Stalin's Men. Translated by Harold Shukman. Oxford: Basil Blackwell, 1983, x + 184 pp. £8.95.

Robert F. Byrnes (ed.), After Brezhnev: Sources of Soviet Conduct in the 1980s. London: Frances Pinter, 1983, xviii + 457 pp., bibliography and index, h/b £16.50, p/b £6.95.

Basile Kerblay, Modern Soviet Society (translated by Rupert Swyer). London: Methuen, 1983, xxvi + 321 pp. h/b £16.00, p/b £7.95.

Max Hayward, Writers in Russia: 1917–1978. Edited and with an introduction by Patricia Blake. London: Harvill Press, 1983, lxxvi + 340 pp. £7.95.

Dina R. Spechler. Permitted Dissent in the USSR. Novy mir and the Soviet Regime. New York: Praeger, 1982, xxiv + 296 pp. $27.95.

Everett M. Jacobs (ed.), Soviet Local Politics and Government, London: George Allen & Unwin, 1983, xiv + 225 pp. £15.00, $28.50.

Alan H. Smith, The Planned Economies of Eastern Europe. London: Croom Helm, 1983, 249 pp. £16.95.

John Löwenhardt, The Soviet Politburo. Translated by Dymphna Clark, Edinburgh: Canongate, 1982, 152 pp. £7.95.

Stephen Clissold, Djilas: the progress of a revolutionary. Introduction by Hugh Setton‐Watson. London: Temple Smith, 1983, 343 pp. £15.00.

Steven L. Burg, Conflict and Cohesion in Socialist Yugoslavia: Political Decision Making Since 1966. Princeton, N. J.: Princeton U. P., 1983, xii + 365 pp. $49.00.

Elizabeth Kridl Valkenier: The Soviet Union and the Third World. New York: Praeger, 1983, 185 pp. $21.95.

Dorothy Atkinson, The End Of The Russian Land Commune, 1905–30. Stanford, Calf.: Stanford UP, 1983, xii + 457 pp. $29.50.

Alain Touraine, et al., Solidarity: Poland 1980–81, Cambridge and Paris: CUP jointly with Editions de la Maison des Sciences de l'Homme, 1983, xvii + 203 pp. paperback £6.95.  相似文献   

466.
467.
468.
The exploration and examination of the construction of masculinity is increasingly emerging as an integrated part of the study of gender in society in general, and in the Caribbean in particular. We are constantly in search for new sources of material which tell us about the ways in which men construct their masculinity in Caribbean society. In this paper I draw on the imagery and ideas provided by the literary text. I interrogate the novel The Dragon Can't Dance, written by Trinidadian novelist Earl Lovelace. The writer uses the metaphor of the dragon, the costume donned by the main protagonist Aldrick in the yearly Carnival masquerade, as a mask which disguises the need for Aldrick to confront his own masculinity under poor, urban conditions in Trinidad. In the struggles and confrontations between urban working-class men and women in the community of Calvary in Trinidad, the novelist teases out the different constructions of masculinity in the various characters he portrays. I explore the novel, focusing particularly on the ways in which this construction is embedded in the struggles over issues of identity, ethnicity, reputation and honor. While the novelist is clearly able to read into the mind of the male in society, his renditions of the female are not so incisive. However, this is not a shortcoming as the women, though not as well-rounded characters in the novel, play key roles in the definition and shaping of masculinities. This reading of the novel illustrates that the literary text suggests itself as a critical site for further explorations of the illusive data on gender and especially that on masculinity.  相似文献   
469.
470.
Fear of falling     
Wallerstein J  Lewis J  Blakeslee S 《Time》2000,156(13):85, 87-85, 88
  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