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   54821篇
  免费   1947篇
  国内免费   68篇
  2020年   508篇
  2019年   633篇
  2018年   832篇
  2017年   926篇
  2016年   915篇
  2015年   707篇
  2014年   790篇
  2013年   4087篇
  2012年   1434篇
  2011年   1547篇
  2010年   1019篇
  2009年   1013篇
  2008年   1426篇
  2007年   1320篇
  2006年   1194篇
  2005年   1087篇
  2004年   1005篇
  2003年   1054篇
  2002年   1027篇
  2001年   1751篇
  2000年   1705篇
  1999年   1223篇
  1998年   591篇
  1997年   510篇
  1992年   1126篇
  1991年   1082篇
  1990年   1053篇
  1989年   1006篇
  1988年   941篇
  1987年   938篇
  1986年   925篇
  1985年   1026篇
  1984年   849篇
  1983年   712篇
  1982年   540篇
  1981年   591篇
  1979年   856篇
  1978年   636篇
  1977年   589篇
  1976年   549篇
  1975年   770篇
  1974年   833篇
  1973年   909篇
  1972年   749篇
  1971年   687篇
  1970年   650篇
  1969年   692篇
  1968年   825篇
  1967年   762篇
  1966年   783篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
871.
A distinct type of phenomenon that has not been previously noted as such is named and described. Men who present a two-woman phenomenon retain a commitment to wife and marriage while loving another woman. Conflict arises only when one of the women has to be relinquished. It is postulated that many men with this pattern of loving have experienced a traumatic childhood and an oedipal conflict which defensively involved two maternal objects in fantasy or reality. One mother was hated, the other loved. This dynamic is one possible determinant leading to the two-woman phenomenon.  相似文献   
872.
This article attempts to apply a theory of aggression as motivation to overcome obstacles to the understanding of phobic states and their formation. The role of aggression in the genesis of phobic conditions is discussed, and the traditional analytic view of aggression as instinctual drive is contrasted with a motivational approach. The motivational view offers the advantage of a clearer understanding of the stimulus contexts, representational connections, and both real and imaginary object connections that are lacking in the more traditional understanding of aggression as a biological drive.  相似文献   
873.
874.
875.
Investigating the specific of psychic performance disorders in epileptics structural aspects in addition to quantitative performance differences are considerable. We compared psychometrically obtained performance structures of epileptic children and adults and of parallelised healthy control persons. It became evident, that the performance differentiation hypothesis is to corroborate also in epileptic patients. The psychic performance structure of epileptics is characterized by a lower differentiation level of the basis functions underlining the performances. Our factor analytic investigations emphasize the importance of deceleration of psychic/psychomotoric speed in epileptics as primary basic disorder.  相似文献   
876.
Intrathecal methotrexate-overdosage in the meningosis therapy leads to CNS damages dependent on dose. It was given a own case report and a literature review with clinical symptoms and the therapy in this complication. Neuropathologic findings included demyelinisation und necrosis of the white matter.  相似文献   
877.
An investigation into the diagnostic value of psychometric methods for the diagnosis of depressive states involved five psychometric questionnaires, one concentration test procedure, and one problem-solving approach to register cognitive processes. The data obtained for 80 depressive patients of varied aetiology were compared with those of sample of 80 neurotics without depressive aberration. Even univariate comparisons revealed statistically significant differences between the two samples. Multivariate methods (factor analysis, discriminative analysis) yielded more differentiated information. The "Scale for depression depth measurements" was found to be of particular diagnostic relevance; it was standardized for the time being.  相似文献   
878.
Slow paroxysmal EEG activity, also referred to as "subcortical signs", offers an indication of impaired subcortico-cortical functional interaction that may be set off as a result of intracranial processes of a wide range of localisation. For this reason, the occurrence of this EEG pattern should not be taken to indicate a primary localisation in the range of the medical subcortical structures, nor does its absence imply any improbability of extensive lesions in the region. Taking into consideration the form and frequency of the waves during paroxysms and their local distribution, even this aspecific pattern yields more information for the clinical diagnosis. In particular, generalised paroxysms from monomorphic delta waves are usually associated with an existing primary or secondary brain illness, and would suggest the need for further diagnostic clarification. In interpreting the slow-wave groups restricted to the temporal regions, frequently counted among the "subcortical signs", the wave frequency and the patient's age must be taken into account. In the second half of life they frequently occur unaccompanied by any pathological process.  相似文献   
879.
880.
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