全文获取类型
收费全文 | 65180篇 |
免费 | 2599篇 |
国内免费 | 32篇 |
专业分类
67811篇 |
出版年
2020年 | 670篇 |
2019年 | 904篇 |
2018年 | 1262篇 |
2017年 | 1233篇 |
2016年 | 1316篇 |
2015年 | 866篇 |
2014年 | 1119篇 |
2013年 | 5558篇 |
2012年 | 2007篇 |
2011年 | 2192篇 |
2010年 | 1281篇 |
2009年 | 1307篇 |
2008年 | 1969篇 |
2007年 | 1967篇 |
2006年 | 1753篇 |
2005年 | 1569篇 |
2004年 | 1562篇 |
2003年 | 1434篇 |
2002年 | 1457篇 |
2001年 | 2071篇 |
2000年 | 2035篇 |
1999年 | 1520篇 |
1998年 | 831篇 |
1997年 | 701篇 |
1996年 | 653篇 |
1995年 | 650篇 |
1994年 | 616篇 |
1993年 | 632篇 |
1992年 | 1230篇 |
1991年 | 1172篇 |
1990年 | 1166篇 |
1989年 | 1068篇 |
1988年 | 1011篇 |
1987年 | 978篇 |
1986年 | 1007篇 |
1985年 | 1059篇 |
1984年 | 827篇 |
1983年 | 752篇 |
1982年 | 597篇 |
1979年 | 869篇 |
1978年 | 667篇 |
1975年 | 774篇 |
1974年 | 835篇 |
1973年 | 823篇 |
1972年 | 740篇 |
1971年 | 655篇 |
1969年 | 601篇 |
1968年 | 748篇 |
1967年 | 740篇 |
1966年 | 651篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
931.
The purpose of this study was to examine the influence of age, sex, etiology, and degree of hearing loss on the static and dynamic balance performance of hearing impaired children and youth (N = 132), ages 3 to 14 yr. The subjects were individually assessed on Items 2 and 7 of Subtest 2 of the Short Form of the Bruininks-Oseretsky Test of Motor Proficiency. As expected, performance on both tasks improved with chronological age. In comparing the performance of subjects by etiology, only one significant difference emerged; those with genetic deafness were superior on static balance to those whose deafness was idiopathic. However, the mean scores for the genetic group were superior for both balance tasks. The sex of the child as well as extent of hearing loss did not affect performance in either task. 相似文献
932.
A Satow 《Perceptual and motor skills》1986,62(3):983-998
In 1982 Satow proposed four hypothetical properties determining mechanisms of individual differences in perceptions; these were supported by results of a factor analysis of responses to a 58-item check list. Present work confirmed the four properties (intense sensitivity, temporal sensitivity, sensory-motor reactivity, and possible range of total stimuli), and obtained a property, preference for intense and prolonged stimuli, from a principal component analysis of data from a 60-item list given to 316 subjects. The 60-item list is a revised version of the 58-item list which asked subjects about their subjective sensitiveness and preferences for environmental sensory stimuli (visual, auditory, olfactory, and tactile). Within subjects relationships among these properties are interindependent, since for individuals correlations of factor-score estimates between pairs of these properties were near zero. This interindepedence supported a model of four hypothetical types of individuals, explaining the individual differences on the grounds of the relations among the properties. 相似文献
933.
934.
G Bohlmann C Karl F M Loebe 《Psychiatrie, Neurologie, und medizinische Psychologie》1986,38(4):194-197
Stomatological examination was carried out on 173 patients with schizophrenia (IKK-Nr. 295). It was observed that this group of patients showed a diminished dental and oral care in comparison to the average population of the same region. The close cooperation of dentists with the institutions for chronic patients will be as prophylactic measure in favour of the patients encouraged. 相似文献
935.
R F?tzsch R Podemski A Brzecki R Bogdańska 《Psychiatrie, Neurologie, und medizinische Psychologie》1986,38(9):518-525
Twenty six clinically healthy smokers were studied with transient pattern visual-evoked potentials. In comparison with a sample of "normal" subjects we found a difference of some parameters (P less than 0.05): the P2-latency and the interocular difference of latency on average were 6-7 ms respectively 2 ms larger. Thirteen subjects have had a prolonged P2-latency (P less than 0.05) and/or a difference in interocular latencies larger than 5 ms. These findings may suggest on subclinical disturbances of visual system and indicators of an special sensitivity of that person. The findings are possibly related to tobacco-alcohol amblyopia. 相似文献
936.
W Kallenbach G Küllertz G Fischer A Barth 《Psychiatrie, Neurologie, und medizinische Psychologie》1986,38(8):456-463
The dipeptidyl-peptidase activity of 650 liquores cerebrospinalis was obtained by means of the substrate Gly-Pro-NHNp (Gly-Pro-4-nitroanilid) at pHs of 5.5 and 7.4. In comparison with a reference collective, the suitability of the method as a supplementary liquor parameter in neurological psychiatric diagnosis was examined. The introduction of the measurement at pH 7.4 can be particularly recommended for the distinguishing of bacterial and nonbacterial meningitis. 相似文献
937.
Placebo-like effects of education about rational-emotive therapy 总被引:1,自引:0,他引:1
938.
939.
940.
Varieties of perceptual independence 总被引:6,自引:0,他引:6