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   167684篇
  免费   7699篇
  国内免费   155篇
  175538篇
  2021年   1511篇
  2020年   2806篇
  2019年   3454篇
  2018年   3518篇
  2017年   3941篇
  2016年   4622篇
  2015年   3944篇
  2014年   4817篇
  2013年   23480篇
  2012年   4467篇
  2011年   3563篇
  2010年   3824篇
  2009年   4759篇
  2008年   3736篇
  2007年   3251篇
  2006年   3879篇
  2005年   3844篇
  2004年   3374篇
  2003年   3005篇
  2002年   2798篇
  2001年   3153篇
  2000年   3019篇
  1999年   3015篇
  1998年   2808篇
  1997年   2655篇
  1996年   2561篇
  1995年   2409篇
  1994年   2362篇
  1993年   2324篇
  1992年   2469篇
  1991年   2306篇
  1990年   2163篇
  1989年   2107篇
  1988年   2076篇
  1987年   2102篇
  1986年   2088篇
  1985年   2286篇
  1984年   2422篇
  1983年   2231篇
  1982年   2334篇
  1981年   2308篇
  1980年   2135篇
  1979年   2050篇
  1978年   2114篇
  1977年   2095篇
  1976年   1876篇
  1975年   1891篇
  1974年   1950篇
  1973年   1756篇
  1972年   1406篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
991.
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   
992.
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   
993.
Reviews     
  相似文献   
994.
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   
995.
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   
996.
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   
997.
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   
998.
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   
999.
The effect of prohibiting the use of a preshot routine on free-throw shooting in competitive situations was investigated. 25 male high school basketball players were instructed to attempt 50 free throws alternating in blocks of 10 between the use of their preshot routine and shooting without it. To make the situation competitive, subjects were run in groups of five and their performance was recorded on a large easel placed to the side of the free-throw line. A significantly larger number of baskets were made in the preshot routine condition than without the routine. A competitive situation led to a greater decrement in baskets than had been reported in 1986 by Lobmeyer and Wassermen during noncompetitive free-throw shooting.  相似文献   
1000.
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