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   168931篇
  免费   7738篇
  国内免费   155篇
  176824篇
  2021年   1513篇
  2020年   2837篇
  2019年   3484篇
  2018年   3520篇
  2017年   3936篇
  2016年   4648篇
  2015年   3962篇
  2014年   4831篇
  2013年   23579篇
  2012年   4503篇
  2011年   3633篇
  2010年   3873篇
  2009年   4816篇
  2008年   3763篇
  2007年   3315篇
  2006年   3944篇
  2005年   3905篇
  2004年   3429篇
  2003年   3075篇
  2002年   2869篇
  2001年   3192篇
  2000年   3045篇
  1999年   3048篇
  1998年   2836篇
  1997年   2676篇
  1996年   2579篇
  1995年   2420篇
  1994年   2384篇
  1993年   2338篇
  1992年   2477篇
  1991年   2318篇
  1990年   2183篇
  1989年   2112篇
  1988年   2080篇
  1987年   2114篇
  1986年   2096篇
  1985年   2300篇
  1984年   2433篇
  1983年   2246篇
  1982年   2346篇
  1981年   2313篇
  1980年   2142篇
  1979年   2059篇
  1978年   2128篇
  1977年   2103篇
  1976年   1886篇
  1975年   1895篇
  1974年   1958篇
  1973年   1759篇
  1972年   1413篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
The Psychological Record - Treatment with 8.0 mg/kg fluprazine hydrochloride had no effect on the acquisition of a step-down avoidance response but retarded its extinction. The drug also impaired...  相似文献   
992.
993.
154 autopsy cases of alcoholics (120 men and 34 women) were investigated from a neuropathological viewpoint. In only 19 cases could typical diseases of the nervous system caused by alcoholism be found (Wernicke's encephalopathy, central pontine myelinolysis, Marchiafava-Bignami's disease and disorders of the peripheral nerves and muscles). In comparison liver diseases occurred almost five times more frequently in our own material. Diseases caused by alcoholism of the nervous system, the question of brain shrinkage and its partial reversibility, the up to now not completely known effects on the neurophil and cortical cytoarchitectonic are discussed according to the literature.  相似文献   
994.
The Psychological Record - The present experiments investigated blocking effects in rhesus monkeys (Macaca mulatta) in a discrimination learning paradigm using a single stimulus modality. Two...  相似文献   
995.
Reviews     
  相似文献   
996.
In this article, the experience of conversion, which is usually delegated to the realm of spiritual studies, is applied to the counseling experience. It is posited that a person who goes through a successful counseling process will experience a turning around, will cease leading life in a dysfunctional way, and will move forward in a manner by which the person experiences life in a new perspective. This new perspective brings the person wholeness and balance.  相似文献   
997.
The 16th century schism in Christian thought leading to the Reformation has an interesting analogy in Carl Rogers' attempt to reform the helping professions. An exploration of this analogy clarifies much of the theoretical tension in the contemporary arena of pastoral counseling.  相似文献   
998.
In several studies attributing positive health benefits to running, the benefits include reduced depression, fatigue, anger, and increased vigor. Until now, little research has focused on Masters track and field athletes. The present study reports on 587 men and women Masters who participated in a mailed survey measuring mood states using the Profile of Mood States. In comparison to other groups of athletes, these Masters tend to be less depressed, less angry, and less fatigued. Attribution to lifestyle and maturity with their sport is discussed.  相似文献   
999.
The purpose of this study was to measure subjects' ability to detect deliberate stressed, front-vowel misarticulations embedded in two-syllable words. Reaction times to words with various vowel-height misarticulations were examined for 25 women to assess the effect of a specific vowel height change on listeners' ability to recognize a word. Statistical analysis indicated no significant differences between reaction times to initial, stressed vowel changes along the height dimension, suggesting that subjects responded similarly to all vowel errors on the detection task. This finding provides further evidence that stressed-vowel information may serve as a perceptual anchor in guiding a listener during word recognition.  相似文献   
1000.
Effect of click rate and delay on breakdown of the precedence effect   总被引:1,自引:0,他引:1  
The precedence effect was tested as a function of echo-click delay and click rate after an abrupt switch in location between leading and lagging clicks. Click trains at three rates, 1/sec, 2/sec, and 4/sec, with delays ranging between 2 and 20 msec, were presented to subjects in an anechoic chamber. Duration of the click train after the switch in location was 12 sec, and echo click perceptibility was assessed throughout this period. The number of echo clicks heard was an increasing monotonic function of delay. The subjects reported a "fade-out" of echo clicks after a set number of clicks at each delay, regardless of rate. This result was interpreted as a buildup in inhibition of echoes produced by the ongoing click train. Suppression of echoes was stronger when the leading click originated from the right side than from the left side.  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