全文获取类型
收费全文 | 9888篇 |
免费 | 81篇 |
专业分类
各国政治 | 333篇 |
工人农民 | 1115篇 |
世界政治 | 391篇 |
外交国际关系 | 383篇 |
法律 | 5359篇 |
中国政治 | 5篇 |
政治理论 | 2369篇 |
综合类 | 14篇 |
出版年
2023年 | 10篇 |
2022年 | 13篇 |
2021年 | 15篇 |
2020年 | 28篇 |
2019年 | 40篇 |
2018年 | 1310篇 |
2017年 | 1243篇 |
2016年 | 1072篇 |
2015年 | 110篇 |
2014年 | 61篇 |
2013年 | 368篇 |
2012年 | 232篇 |
2011年 | 957篇 |
2010年 | 1066篇 |
2009年 | 623篇 |
2008年 | 783篇 |
2007年 | 758篇 |
2006年 | 67篇 |
2005年 | 117篇 |
2004年 | 227篇 |
2003年 | 179篇 |
2002年 | 67篇 |
2001年 | 28篇 |
2000年 | 42篇 |
1999年 | 27篇 |
1998年 | 31篇 |
1997年 | 37篇 |
1996年 | 41篇 |
1995年 | 49篇 |
1994年 | 45篇 |
1993年 | 15篇 |
1992年 | 14篇 |
1991年 | 16篇 |
1990年 | 20篇 |
1989年 | 12篇 |
1988年 | 16篇 |
1987年 | 18篇 |
1986年 | 14篇 |
1985年 | 11篇 |
1984年 | 18篇 |
1983年 | 18篇 |
1982年 | 25篇 |
1981年 | 12篇 |
1979年 | 17篇 |
1978年 | 18篇 |
1977年 | 15篇 |
1974年 | 6篇 |
1971年 | 6篇 |
1970年 | 8篇 |
1969年 | 9篇 |
排序方式: 共有9969条查询结果,搜索用时 15 毫秒
1.
Adam Lanzarotta Ph.D. Martin M. Kimani Ph.D. Michael D. Thatcher B.S. John Lynch Ph.D. Moseley Fulcher A.S. Mark R. Witkowski Ph.D. JaCinta S. Batson M.S. 《Journal of forensic sciences》2020,65(4):1274-1279
This study describes the performance of handheld Raman devices for determining whether suspect pharmaceutical tablets declared to contain controlled substances were consistent with authentic (CWA) or not consistent with authentic (NCWA) tablets using a simple, rapid, field-friendly method capable of being used by nonexperts. Twenty-five authentic products and 84 known NCWA tablets were examined using three “parent” devices for a total of 327 analyses. On average, the parent devices yielded a true pass rate of 100%, a true fail rate of 98.4%, a false pass rate of 1.6%, and a false fail rate of 0%. The methods/libraries were then transferred to 13 identical “daughter” devices, which were used to examine 10 suspect finished dosage forms in duplicate (six known NCWA tablets and four authentic tablets) for a total of 260 measurements. On average, the daughter devices had a true pass rate of 100%, a true fail rate of 95.5%, a false pass rate of 4.5%, and a false fail rate of 0.0%. These data demonstrate that the parent–daughter electronic transfer method was successful, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices. The methods can then be used to (i) prioritize samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify active ingredients and (ii) help support the interdiction of dangerous tablets at ports of entry, thereby preventing them from reaching the supply chain. 相似文献
2.
Olamide Oguntoye Martin Geissdoerfer Henry Nuwarinda Steve Evans 《Development in Practice》2019,29(1):115-121
This viewpoint reflects on how to improve the process of introducing facilitated industrial symbiosis programmes (FISPs) to small and medium enterprises (SMEs) in developing countries. Although FISPs are a long-established industrial practice, their formal introduction to SMEs in developing countries has only recently begun, mostly through support from international development agencies. Based partly on anecdotal evidence from Gauteng, South Africa, we identify six key questions which need to be addressed to improve the process of facilitating FISPs. 相似文献
3.
Asia Europe Journal - In order to adapt to a changing global order, the European Union (EU) has established an important mechanism for cooperating with some of the world’s most influential... 相似文献
4.
5.
Peter Drahos 《Liverpool Law Review》2007,28(1):11-39
After the Agreement on the Trade-Related Aspects of Intellectual Property Rights (TRIPS) came into operation in 1995 developing countries have found themselves in a process of continual negotiation over intellectual property rights and access to medicines. These negotiations have taken place in the World Trade Organization and in the context of free trade agreements. The paper suggests that the only real win for developing countries has been the Doha Declaration on the TRIPS Agreement and Public Health in 2001. What have been the lessons for developing countries in a decade of negotiations over access to medicines? Drawing on themes of rule complexity and regulatory ritualism the paper discusses four key lessons for developing countries. It concludes by arguing that developing countries will do better if they adopt a networked governance approach to negotiation rather than continuing to rely on traditional coalition formation. 相似文献
6.
This paper explores the multi-layered representations of violence and crime in the recent Hollywood film Gangs of New York [Scorcese (2003) Miramax]. We use our exploration of this film to suggest that popular culture, even through its most mainstream products, can be seen as a critical criminological space where alternative views of law, crime and the state are made available. Rather than understanding Hollywood movies simply as vehicles for disseminating conventional mores, we suggest that they can furnish critical (and complex) points of view on law and crime and that the project of a critical criminology can be strengthened by engaging more forthrightly with these ubiquitous cultural forms. 相似文献
7.
8.
Martin Painter 《Australian Journal of Public Administration》1991,50(2):219-221
Governing Federations: Constitution, Politics Resources , edited by MICHAEL WOOD, CHRISXIPHER WILLIAMS, CAMPBELL SHARMAN (Sydney: Hale & Iremonger in association with the Royal Australian Institute of Public Administration, 1989, 281 pp).
Federalism in Canada t Australia: Historical Perspectives 192088 , edited by BRUCE W. HODGINS, JOHN J. EDDY, SHELAGH D. GRANT, JAMES STRUTHERS (Peterborough: Frost Centre for Canadian Heritage and Development Studies, Trent University, 1989, 511 PP).
Australian Federalism , edited by BRIAN GALLIGAN (Melbourne: Longman Cheshire, 1989, 278 pp). 相似文献
Federalism in Canada t Australia: Historical Perspectives 192088 , edited by BRUCE W. HODGINS, JOHN J. EDDY, SHELAGH D. GRANT, JAMES STRUTHERS (Peterborough: Frost Centre for Canadian Heritage and Development Studies, Trent University, 1989, 511 PP).
Australian Federalism , edited by BRIAN GALLIGAN (Melbourne: Longman Cheshire, 1989, 278 pp). 相似文献
9.
Fukunari Kimura 《Asia Europe Journal》2003,1(2):197-211
East Asia, including Northeast Asia and Southeast Asia, has developed tightly-linked production/distribution networks through
globalizing corporate activities. The vertical chain of production in East Asia has been even more sophisticated than economic
integration in East Europe or Latin America. However, the political environment of East Asia for trade and investment has
been far from borderless. The integration effort at the policy level has been very much limited so far, due to the historical
background as well as geopolitics surrounding East Asia.
The Asian currency/financial crisis provided these countries a historical turning point. After the burst of the crisis, East
Asians realized that they have to take care of themselves in their difficulties, not depending on outside forces. A natural
choice for them was to step into the realm of regionalism. In 1998, Japan and Korea officially announced that they would discard
the long-lasting GATT/WTO-only approach and adapt the multi-layered approach, including both regionalism and multilateralism.
The ultimate goal of regionalism would be a region-wide integration including ASEAN+3. As a steppingstone, Japan signed the
Japan-Singapore Economic Partnership Agreement (JSEPA) in January 2002. In a parallel move, the ASEAN and China Leaders announced
in November 2001 the establishment of an ASEAN-China Free Trade Area (ACFTA) within 10 years.
This article will follow up the most recent advancement of regional institutional building in East Asia with the emphasis
on peculiar characteristics of economic integration in the region and discuss its implications for Asia-Europe relations.
This paper is heavily drawn from Kimura (2002, 2003). 相似文献
10.
This paper links the policy context regarding S&T parks to the objectives and characteristics of the established parks and
incubators in a relatively small, converging European country. S&T parks and incubators in Greece during the past decade and
a half have gradually shifted in terms of ownership and management from university/research institute to the private sector
and in terms of financing from public to private funds, also involving the provision of seed capital and access to venture
capital. This gradual shift toward more private engagement has created a variety of models out of which, it is hoped, successful
innovative companies will emerge in larger numbers than in the past.
相似文献
相似文献