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   2200篇
  免费   50篇
各国政治   288篇
工人农民   41篇
世界政治   127篇
外交国际关系   110篇
法律   1330篇
中国共产党   7篇
中国政治   10篇
政治理论   326篇
综合类   11篇
  2023年   11篇
  2022年   13篇
  2021年   26篇
  2020年   47篇
  2019年   51篇
  2018年   124篇
  2017年   117篇
  2016年   137篇
  2015年   96篇
  2014年   63篇
  2013年   197篇
  2012年   86篇
  2011年   71篇
  2010年   68篇
  2009年   87篇
  2008年   122篇
  2007年   145篇
  2006年   149篇
  2005年   78篇
  2004年   74篇
  2003年   62篇
  2002年   77篇
  2001年   59篇
  2000年   53篇
  1999年   30篇
  1998年   20篇
  1997年   14篇
  1996年   12篇
  1995年   5篇
  1994年   9篇
  1993年   4篇
  1992年   10篇
  1991年   10篇
  1990年   11篇
  1989年   12篇
  1988年   10篇
  1987年   9篇
  1986年   9篇
  1985年   13篇
  1984年   4篇
  1983年   9篇
  1982年   3篇
  1981年   12篇
  1979年   9篇
  1978年   5篇
  1977年   2篇
  1974年   2篇
  1973年   3篇
  1972年   2篇
  1964年   2篇
排序方式: 共有2250条查询结果,搜索用时 15 毫秒
981.
982.
The use of oligonucleotide fingerprinting is evaluated in practical forensic work, using both artificially and systematically produced stains as well as actual case work material. The probes (CAC5/(GTG)5 are superior because of their individualizing potential in comparatively fresh specimens with little DNA degradation, whereas (GACA)4, still produces substantial information when high molecular weight DNA is lacking. The overall limitations and the advantages of this technology are discussed in detail and compared to the classical minisatellite probes.  相似文献   
983.
984.
While teachers and students of law tend to take for granted that critical legal campaigning originates in the late 20th century, many historians suggest that the summons of law and its state of accusation before the tribunal of critique dates back to the days of the Enlightenment. I am arguing, in contrast, that, in the West, the history of legal critique is by no means shorter than the history of law; that Western legal evolution embraces and supposes anti-legalism or ‘antinomianism’ since the days of early Christianity and throughout; that, conversely, an adequate assessment of Christianity must stress its character as an anti-institutional, anti-legal, and anti-religious campaign; that the standard view of Humanism, Enlightenment, and Modernity, which tends to foreground their antagonism to Christian institutions and to deny their nature as instantiations of the Christian campaign, misses the crucial point both about them and about Christianity (and, implicitly at least, about geopolitics); that key concepts of political modernity thrust their roots, not only and not most importantly into Political Theology, but rather into Saint Paul’s legal ‘new deal’; that, far from giving rise, as intended, to a deactivation of law, Paul’s action has resulted, instead, in the interlinking build-up of a militant denial of law on the one hand, and an emerging intensification of law on the other hand. Let the reader be warned that the article strings together a bouquet of snap-shots from a work in progress.  相似文献   
985.
Conjunctival petechiae from 15 cases (cause of death: different natural and unnatural) were analysed using confocal laser scanning microscopy (CLSM) in order to visualize the kind of the damage within the vessel wall (diapedesis versus rhexis). The pathomorphological findings with multiple ruptures of vessels appearing to be filled to bursting point define the conjunctival petechiae as a rhexis-haemorrhage.  相似文献   
986.
We report a case of fatal gastric rupture discovered after death, which developed due to a bulimic attack of a 19-year-old woman suffering from anorexia nervosa. An autopsy revealed an acute gastric dilatation and rupture without commonly observed ischemic damage of gastric wall structures. However, it may be difficult to determine the cause of death despite the marked findings. The death as a consequence of neurogenic shock accounts for all the results of gross examination and histologic analysis. This case is the first reported case of fatal gastric rupture of an anorectic patient discovered after death.  相似文献   
987.
An ESI MS/MS library of 800 compounds has been developed and a collection of data is now available for Analyst 1.4 and higher. Compounds include forensically important drugs, such as illegal drugs, some deuterated analogues, hypnotics, amphetamines, benzodiazepines, neuroleptics, antidepressants and many others. For setting up the library of product ion spectra, 20-200 ng of the compounds have been injected either by flow injection or via a short LC-column, the precursor ions were chosen from the Q1 scan spectra, and product ion spectra were generated by CID in the collision cell using three different collision energies (20, 35 and 50 eV). Three spectra of each compound have been collected and compound names, CAS numbers, formulas and molecular weights have been added in the database, which has been generated by the Analyst software. The library can be used for compound identification during general unknown screening analysis by combination of Q1 scan techniques and subsequent MS/MS analysis in a second analytical run. Quantitative procedures for multi drug analysis using Multiple Reaction Monitoring can be established by selection of product ions and suitable collision energies from the library. For publication of the spectra, PDF-files have been generated and can be viewed on-line as supplementary data or from the website in alphabetical order: (supplementary data, should be made available via ELSEVIER-WEBSITE or via ).  相似文献   
988.
The mother brought her 31/2-year-old son to a paediatric clinic as his forehead was swollen and bluish in appearance. She was unable to give any explanation for this lesion. Clinically it was noted that a very visible and also palpable, doughy swelling was present both in the forehead as well as the hard skull areas. Some hours later, a massive bilateral periocular haematoma appeared. Whilst X-rays were unable to provide any diagnostic help, the sonographic examination of the skull carried out on the same day revealed an extensive subgaleal haematoma. This phenomenon is described in radiological literature as "scalping" and is caused by the use of considerable, blunt violence against the head (shear stresses, e.g. by pulling at the hair). The mother's boyfriend later confessed forceful pulling of the hair.  相似文献   
989.
In postmortem examination, it is difficult to diagnose pericardial tamponade in a dead body from the findings of conventional external examination alone. However, ultrasonography is a common diagnostic tool for pericardial tamponade in clinical practice. We studied the postmortem diagnosis of pericardial tamponade at external examination level by applying an ultrasonographic device. The ultrasonographic findings were compared with the conventional autopsy findings. Among 455 cases of forensic autopsy in Hamburg and Tokyo conducted within 5 days after death, we successfully diagnosed 11 cases of pericardial tamponade by ultrasound imaging prior to autopsy, and failed to diagnose pericardial tamponade in only two cases. In addition, 79 cases of external examination conducted at the Tokyo Medicinal Examiner's Office were also examined with ultrasonography, and we diagnosed three cases of pericardial tamponade and five cases of pericardial effusion. The differences in ultrasonographic findings between tamponade and effusion were relatively clear. Although autopsy provides definitive evidence for the cause of death, sometimes autopsy cannot be performed due to some social factors. In such cases, conventional external examination alone cannot establish a cause of death by pericardial tamponade, and application of diagnostic imaging technique will be helpful. While CT and/or MRI may provide more detailed information than ultrasound imaging, these techniques require special equipment, room and specialist, and most of all involves high cost, which is perhaps the most important consideration in the present atmosphere of medical cost containment. On the other hand, the ultrasonographic devices we use are compact, and can be used directly at the scene of death. Postmortem application of ultrasonography may be a valuable adjunct in the work of medical examiners and forensic pathologists.  相似文献   
990.
In Turkey, traffic accidents are the major causes of mortality and morbidity. According to the statistics made by Turkish Security Headquarters in the year 2000, 7500 people are killed in the traffic accidents every year. Drivers are mostly blamed for the traffic accidents. Tired, weary, sleepy and absentminded driving are common reasons for traffic accidents due to many reasons. Among these reasons mental and reflex conditions of drivers are significant. Toxoplasmosis is one of the most common zoonoses throughout the world. In immunocomponent adults, toxoplasmosis has no clinical signs or symptoms and infection in such people can only be detected by serological examinations. This kind of latent or dormant toxoplasmosis can be located in neural or muscular tissues and cause prolonged reaction times of the muscles. Extended reaction times also lead to deceleration of the reflexes which could be a major cause of the traffic accidents. By the light of this situation, the incidence of Toxoplasma gondii is investigated among the population who were involved in a traffic accident while driving. A total of 185 people (100 men and 85 women), aged between 21 and 40 years, living in Izmir and Manisa cities, were enrolled in the study group (SG) during a period of 6 months time. Their informed consents were taken initially and the laboratory tests of all these individuals related to blood alcohol levels after the accidents were found negative. The control group (CG) were also consisted 185 people (95 men and 90 women), residents of the same region, in same age group. The people in CG had no clinical signs or symptoms concerning toxoplasmosis. All collected sera were examined using a commercial IgG and IgM ELISA kit. According to the results of serological tests of the SG, 45 (24.32%) sera were IgG positive, six (3.24%) were IgM positive and 10 (5.40%) were both IgG and IgM positive. On the other hand in CG, 12 (6.48%) people found IgG positive, one (0.54%) found IgM positive and three (1.62%) found both IgG and IgM positive. This data was considered as statistically significant by Yates corrected chi2-test. (p < 0.05). In conclusion, there is an increased risk for traffic accidents for drivers owing to these high seroprevalence of latent toxoplasmosis. Prospective studies are still necessary on this subject but latent toxoplasmosis of drivers should be taken into account while developing strategies to prevent traffic accidents in Turkey.  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