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   233篇
  免费   16篇
各国政治   20篇
工人农民   14篇
世界政治   70篇
外交国际关系   18篇
法律   95篇
中国政治   1篇
政治理论   31篇
  2023年   2篇
  2022年   1篇
  2021年   2篇
  2020年   14篇
  2019年   19篇
  2018年   19篇
  2017年   24篇
  2016年   18篇
  2015年   10篇
  2014年   13篇
  2013年   35篇
  2012年   12篇
  2011年   13篇
  2010年   6篇
  2009年   3篇
  2008年   4篇
  2007年   11篇
  2006年   4篇
  2005年   9篇
  2004年   6篇
  2003年   5篇
  2002年   3篇
  2001年   1篇
  2000年   3篇
  1997年   1篇
  1996年   1篇
  1995年   2篇
  1994年   1篇
  1993年   1篇
  1991年   1篇
  1988年   2篇
  1987年   1篇
  1984年   1篇
  1983年   1篇
排序方式: 共有249条查询结果,搜索用时 31 毫秒
231.
Abstract: Most studies of long‐term chondrocytes survival were for tissue banks. They showed a gradual reduction in the viable chondrocytes percentage as a function of time and ambient temperature, but the samples were harvested under optimal conditions. The aim of our study was to determine the most reliable combination of cartilage source and assay for the in vitro postmortem chondrocyte viability analysis in the conditions that imitate a dead body. Osteochondral cylinders were procured from femoral condyles and talar trochleas of three male donors and stored in the cell culture media at 4 ± 2°C and 23 ± 2°C. The samples were analyzed by a cell viability analyzer and a confocal laser scanning microscope (CLSM) initially 24–36 h after death and then in 4‐week intervals. The results reconfirmed the significant influence of time (p = 0.0002), but not of the temperature (p = 0.237). The largest reproducibility was presented for the knee joint and the CLSM.  相似文献   
232.
The aim of this study was to determine the differences in the anatomical site of a gunshot entrance wound and the direction of the bullet path between right- and left-handed subjects who committed a suicide by a single gunshot injury to the head. The retrospective autopsy study was performed for a 10-year period, and it included selected cases of single suicidal gunshot head injury, committed by handguns. We considered only contact or near-contact wounds. The sample included 479 deceased, with average age 47.1 ± 19.1 years (range, 12-89 years): 432 males and 47 females, with 317 right-handed, 25 left-handed, and 137 subjects with unknown dominant hand. In our observed sample, most cases involved the right temple as the site of entrance gunshot wound (about 67%), followed by the mouth (16%), forehead (7%), left temple (6%), submental (2%), and parietal region (1%). The left temple, right temple, and forehead were the sites of the gunshot entrance wounds, which were the best predictors of the handedness of the deceased (Spearman ρ = 0.149, P = 0.006). Our study showed that the direction of the bullet intracranial path in cases of suicide was even a more potent predictor of the handedness of the deceased (Spearman ρ = 0.263, P = 0.000; Wald = 149.503, P = 0.000).  相似文献   
233.
Sudden death after sexual activity is a well-known entity, but it is rare in females. Herein we present a case of fatal, massive subarachnoid hemorrhage from a ruptured berry-shaped aneurysm, during sexual anal self-stimulation. A 39-year-old woman was found dead on a couch, with the wooden handle of a spring twirl whisk inserted inside her anus and rectum as a dildo-like object. External examination was unremarkable with no signs of injuries. Intracranial examination showed a massive subarachnoid hemorrhage, up to 6 mm in thickness, especially around the brainstem and the inferior side of the brain. After removing the blood clots, the saccular aneurysm was found at the site of the bifurcation of the left internal carotid. In this case study, we underline the utility of forensic autopsy, as well as death scene investigation, in reconstructing the mechanism of death, as well as the dynamics of the event.  相似文献   
234.
In medical practice in Germany and several other countries abbreviated orders linked to end-of-life decisions, such as DNR (do not resuscitate), are increasingly used. In order to investigate their legal status, this article gives an overview of the recently passed German law, which regulates the process of end-of-life decision-making and the use of living wills, giving primacy to patient autonomy. Concerning the risk of misinterpretation of acronyms, the article describes the impacts of such orders on patient autonomy and safety and suggests a clear systematic classification of the different DNR orders in order to investigate their legal status under the German law. Their general binding force is to be acknowledged, depending on its origination and the fulfilment of certain requirements.  相似文献   
235.
236.
Reviews     
Andrei Kuznetsov, Foreign Investment in Contemporary Russia: Managing Capital Entry. New York: St Martin's Press Inc, 1994. xiv + 188 pp., £45.00

Leslie Dienes, Istvan Dobozi & Marian Radetzki, Energy and Economic Reform in the Former Soviet Union: Implications for Production, Consumption and Exports. London: Macmillan, 1994, xiv + 246 pp., £45.00

Hilary Pilkington, Russia's Youth and its Culture. A Nation's Constructors and Constructed. London: Routledge, 1994, xiv + 358 pp., £40.00 h/b., £12.99 p/b.

Peter Gatrell, Government, Industry and Rearmament in Russia, 1900–1914: the Last Argument of Tsarism. Cambridge: Cambridge University Press, 1994, xx + 399 pp., £55.00 h/b., £19.95 p/b.

Margot Light (ed.), Troubled Friendships: Moscow's Third World Ventures. London: British Academic Press, 1993, vii + 225 pp., £39.50.

Dale F. Eickelman (ed.), Russia's Muslim Frontiers: New Directions in Cross‐cultural Analysis. Bloomington and Indianapolis, IN: Indiana University Press, 1993, ix + 225 pp.

Ljubo Sirc, Criticism of Self‐Management Still Relevant? London: Centre for Research into Communist Economies, 1994, 134 pp., £7.50.

Du?an Pokorný, Efficiency and Justice in the Industrial World: Volume 1. The Failure of the Soviet Experiment. New York, London: M. E. Sharpe, 1993, 297 pp., £53.00.

Linda J. Cook, The Soviet Social Contract and Why it Failed. Welfare Policy and Workers’ Politics from Brezhnev to Yeltsin. Cambridge, MA and London: Harvard University Press, 1994, xiii + 272 pp., £35.95/$53.95.

Henryk Kierzkowski, Marek Okolski & Stanislaw Wellisz (eds), Stabilization and Structural Adjustment in Poland. London: Routledge, 1993, xi + 314 pp., £45.00.

Stephen Whitefield (ed.) The New Institutional Architecture of Eastern Europe. Basingstoke: Macmillan, 1993, ix + 204 pp., £40.00  相似文献   

237.
238.
239.
240.
Abstract: The aim of this study was to determine the development of the mandibular third molar and its relation to chronological age. The evaluated material consisted of 979 orthopantomograms of patients of Croatian Caucasian origin aged between 5.7 and 14.6 years. Third molar developmental stages were evaluated according to the stages proposed by Nolla. The frequencies of different stages of mineralization and the mean value of the mineralization of the mandibular third molars with regard to age, gender, and size of the mandible were determined and the coefficient of correlation determined between the age of the subject and the stage of development of the mandibular molars. Statistically significant correlation was determined between mineralization of the mandibular third molar and chronological age of the subjects (boys, mandibular left third molar r = 0.779, right third molar r = 0.793; girls, mandibular left third molar r = 0.746, right third molar r = 0.725). It can be concluded that the accuracy of age estimation based on Nolla’s method is applicable for Croatian children.  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