全文获取类型
收费全文 | 443篇 |
免费 | 30篇 |
专业分类
各国政治 | 51篇 |
工人农民 | 32篇 |
世界政治 | 17篇 |
外交国际关系 | 30篇 |
法律 | 244篇 |
中国共产党 | 1篇 |
中国政治 | 3篇 |
政治理论 | 84篇 |
综合类 | 11篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 7篇 |
2019年 | 7篇 |
2018年 | 14篇 |
2017年 | 19篇 |
2016年 | 13篇 |
2015年 | 9篇 |
2014年 | 15篇 |
2013年 | 75篇 |
2012年 | 12篇 |
2011年 | 11篇 |
2010年 | 21篇 |
2009年 | 23篇 |
2008年 | 29篇 |
2007年 | 16篇 |
2006年 | 9篇 |
2005年 | 12篇 |
2004年 | 19篇 |
2003年 | 9篇 |
2002年 | 4篇 |
2001年 | 5篇 |
2000年 | 9篇 |
1999年 | 4篇 |
1998年 | 12篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1995年 | 6篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1991年 | 5篇 |
1990年 | 5篇 |
1989年 | 3篇 |
1988年 | 6篇 |
1987年 | 8篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 6篇 |
1983年 | 10篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1974年 | 2篇 |
1971年 | 3篇 |
1968年 | 2篇 |
排序方式: 共有473条查询结果,搜索用时 15 毫秒
201.
202.
203.
204.
205.
Eun‐Jung Park M.D. Sang‐Cheon Choi M.D. Jung‐Hwan Ahn M.D. Young‐Gi Min M.D. 《Journal of forensic sciences》2013,58(1):179-183
The objectives of our study were to investigate the dose–response relationship of the TASER X26 discharge duration in an anesthetized swine model. Fourteen swines were anesthetized and then exposed to TASER X26 discharge for 5 sec (n = 5) or for 10 sec (n = 6). The sham control group (n = 3) was anesthetized and studied using the same protocol except TASER X26 discharges during the experiments. Hemodynamic parameters were obtained. Blood pressure and total peripheral resistance decreased significantly after TASER discharge and returned to baseline value at 15 min after 5 sec of TASER discharge but did not return to baseline values during the 30‐min observation period after 10 sec of TASER discharge. Repetitive TASER X26 discharge resulted in adverse physiologic events with a dose–response relationship related to the duration of TASER X26 discharge in an anesthetized swine model. 相似文献
206.
Deog‐Im Kim Ph.D. U‐Young Lee M.D. Ph.D. Sang‐Ouk Park M.D. Ph.D. Dae‐Soon Kwak Ph.D. Seung‐Ho Han M.D. Ph.D. 《Journal of forensic sciences》2013,58(1):5-12
Abstract: Radiographs and computed tomography (CT) images have been increasingly applied and accepted in forensic sciences. Along with radiographs and CT images, the frontal sinus is often used for the individual identification because of its unique and unchangeable characteristics. The purpose of this study is to define the usefulness of three‐dimensional (3‐D) images of the frontal sinus for identification. CT images from 119 Korean cadavers were built up for 3‐D reconstruction and surveyed with 15 measurements. The total volume of the sinus, some nonmetric characteristics, and the bilateral asymmetry index in men differed significantly from those in women (p < 0.05). The digit codes, six sections and 10‐digit number, were almost able to accurately identify individuals (98%). This study showed a statistical difference between the sexes and classified the fused and prominent middle sinuses for the first time. This proposed method for identification is more accurate than those used in other studies. 相似文献
207.
208.
Abstract The following is the Introduction from a published collection of articles edited by Lloyd C. Gardner and Marilyn B. Young, Iraq and the Lessons of Vietnam: Or, How Not to Learn from the Past (New York and London: The New Press, 2007. 322pp. 978-1-59558-149-5). The book's Table of Contents appears on p. 486 below. The specter of Vietnam has been buried forever in the desert sands of the Arabian Peninsula. — George H.W. Bush, 1991 相似文献
209.
John W. Young 《Diplomacy & Statecraft》2013,24(3):284-293
Foreign Relations of the United States (FRUS), 1958–60, Vol. Ill, National Security Policy; Arms Control and Disarmament (US Government Printing Office, Washington, 1996); FRUS, 1961–3 VII, Arms Control and Disarmament (1995); FRUS, 1961–3, VIII, National Security Policy (1996); FRUS, 1964–8, XI, Arms Control and Disarmament (1997). 相似文献
210.
Recent reports published by the Pew Research Center for the People and the Press (2000, 2004) propose that young audiences are abandoning traditional news as a source of election information in favor of late-night comedy programs. However, additional evidence (Young & Tisinger, 2006) suggests that exposure to late-night comedy programming is positively correlated with traditional news exposure. This study extends this body of research by offering evidence that exposure to late-night comedy is associated with increases in attention paid to the presidential campaign in national network and cable news. The analysis uses data collected via the National Annenberg Election Survey during the 2004 presidential primary season, between October 30, 2003, and June 4, 2004. Cross-sectional results demonstrate that viewers of late-night comedy programs—specifically viewers of The Tonight Show with Jay Leno and The Late Show with David Letterman, as well as Comedy Central's The Daily Show with Jon Stewart—pay more attention to the campaign in national network and cable news than nonviewers, controlling for a variety of factors. An analysis of time trends also reveals that the rate of increase in news attention over the course of the primary season is greater for viewers of Leno or Letterman than for those who do not watch any late-night comedy. 相似文献