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   16496篇
  免费   105篇
各国政治   581篇
工人农民   1292篇
世界政治   715篇
外交国际关系   584篇
法律   9937篇
中国政治   42篇
政治理论   3408篇
综合类   42篇
  2020年   171篇
  2019年   180篇
  2018年   1443篇
  2017年   1392篇
  2016年   1233篇
  2015年   272篇
  2014年   214篇
  2013年   885篇
  2012年   355篇
  2011年   1082篇
  2010年   1222篇
  2009年   817篇
  2008年   891篇
  2007年   845篇
  2006年   191篇
  2005年   239篇
  2004年   368篇
  2003年   318篇
  2002年   199篇
  2001年   328篇
  2000年   283篇
  1999年   248篇
  1998年   128篇
  1997年   92篇
  1996年   93篇
  1995年   127篇
  1994年   117篇
  1993年   102篇
  1992年   173篇
  1991年   172篇
  1990年   159篇
  1989年   167篇
  1988年   138篇
  1987年   156篇
  1986年   142篇
  1985年   148篇
  1984年   121篇
  1983年   137篇
  1982年   96篇
  1981年   94篇
  1980年   64篇
  1979年   121篇
  1978年   84篇
  1977年   74篇
  1976年   63篇
  1975年   53篇
  1974年   62篇
  1973年   59篇
  1972年   47篇
  1968年   42篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
161.
A prospective study of 161 victims of falls from height is reported. The aim was to determine the interest of systematic qualitative and quantitative toxicological analysis in such fatalities. The primary cause of death was suicide (84.5%), followed by accidents (7%) and homicide (1%). In the remaining 7.5%, cause of death was undetermined. In the suicides, there was evidence of psychotropic medicines in 57% of the observations, with a much higher proportion of benzodiazepines and antidepressants in women than in men. Quantitative toxicologic analysis showed overdosing on medication in 16 suicide victims, with toxic levels in 11 of these. Systematic qualitative and quantitative toxicologic analysis made a significant contribution to the diagnosis of suicide by revealing either an unknown psychiatric treatment or a toxic level.  相似文献   
162.
In comparison to sentences meted out by international tribunalsat Nuremberg, Tokyo and Arusha, and by domestic courts, sentenceshanded down at the International Criminal Tribunal for the formerYugoslavia (ICTY) have been inexplicably lenient. Factors thatmay have contributed to the high proportion of low sentencesat the ICTY include undue emphasis on mitigating factors, particularlythose of particular importance to the Tribunal, the use of pleaagreements, the absence of a separate sentencing hearing followingconviction and the practice of using global (rather than separate)sentences. To make sentences more proportionate to the crimescommitted, the objectives of sentencing should be clarifiedand re-evaluated. Greater weight should be given to deterrence.In assessing the gravity of the offence, the quantum of harmcaused to and suffering experienced by direct and indirect victimsof the crime merits more detailed evaluation. The importanceof mitigating circumstances (such as combating historical revisionism,pleading guilty, expressing remorse and voluntary surrender)should continue to be fully recognized but those factors shouldnot attract excessive weight. Plea bargaining and plea agreementsshould be encouraged because they are indispensable to the Tribunal,an institution with significant temporal, practical and resourcelimitations. The sentencing process should take place afterconviction. A sentencing Chamber should be obliged to statethe starting point of the sentence which it deems appropriateand then quantify the discounts it gives to each mitigatingfactor. Greater consideration should be given to imposing consecutiverather than concurrent sentences. The decision not to adoptsentencing guidelines represents a missed opportunity.  相似文献   
163.
The Patents Court has ruled that it has discretion to awarda claimant a negative declaration that its own product was obviousat the priority date of certain divisional applications. Thegrant of the declaration sought would assure the claimant thatit was not accruing ongoing liability.  相似文献   
164.
Allele frequencies for eight tetranucleotide short tandem repeat (STR) loci-CSF1PO, TPOX, TH01, F13A01, FESFPS, vWA, F13B, LPL-were obtained from a population sample of 105-122 unrelated individuals born in Transylvania and Banat (Romania).  相似文献   
165.
166.
Pulmonary thromboembolism is an often fatal complication of venous thrombosis. Any component or combination of the components composing Virchow's triad (venostasis, hypercoagulability, and endothelial damage) increases the propensity for a thrombophilic state. Hypercoagulable states may be inherited or acquired. While the etiology in many cases may be evident either on physical examination or on evaluation of the decedent's medical history, this is often not the case. We conducted a retrospective study of cases presenting to the Jefferson County Coroner/Medical Examiner's Office in Birmingham, Alabama, who were given a diagnosis of pulmonary embolism. A search of cases within the past 23 years yielded 81 cases. An underlying cause was determined in 70 cases (86%). The remaining 11 (14%) cases had no identifiable cause. We believe that a number of these cases may represent an underlying thrombophilic disorder. Since these disorders may be of an inherited or acquired nature, the determination of an etiology may be relevant to the decedent's family. Postmortem blood analyses may in selected cases be useful and appropriate for the detection of some of these disorders. However, such analyses are not practical in all cases, with each case having to be evaluated on its own merits.  相似文献   
167.
168.
A technique is described for the typing of glyoxalase I (GLO I) and the subtyping of phosphoglucomutase-1 (PGM-1) from the root sheath cells of a single forcibly removed hair. This procedure does not require sample preparation and does not alter the morphological characteristics of the hair. The combined discrimination probability (DP) of the two markers taken together is 0.90 for whites and 0.89 for blacks. GLO I can be typed after four weeks, and PGM-1 can be typed after eight to fifteen weeks in hairs maintained at room temperature. Hairs mounted with Permount showed loss of enzyme activity and loss of band sharpness.  相似文献   
169.
170.
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