全文获取类型
收费全文 | 2937篇 |
免费 | 91篇 |
国内免费 | 2篇 |
专业分类
3030篇 |
出版年
2021年 | 15篇 |
2020年 | 34篇 |
2019年 | 53篇 |
2018年 | 78篇 |
2017年 | 60篇 |
2016年 | 68篇 |
2015年 | 55篇 |
2014年 | 62篇 |
2013年 | 367篇 |
2012年 | 108篇 |
2011年 | 99篇 |
2010年 | 79篇 |
2009年 | 68篇 |
2008年 | 91篇 |
2007年 | 107篇 |
2006年 | 97篇 |
2005年 | 101篇 |
2004年 | 111篇 |
2003年 | 95篇 |
2002年 | 94篇 |
2001年 | 50篇 |
2000年 | 43篇 |
1999年 | 55篇 |
1998年 | 54篇 |
1997年 | 36篇 |
1996年 | 61篇 |
1995年 | 51篇 |
1994年 | 55篇 |
1993年 | 48篇 |
1992年 | 50篇 |
1991年 | 35篇 |
1990年 | 38篇 |
1989年 | 40篇 |
1988年 | 33篇 |
1987年 | 38篇 |
1986年 | 35篇 |
1985年 | 49篇 |
1984年 | 33篇 |
1983年 | 45篇 |
1982年 | 39篇 |
1981年 | 31篇 |
1980年 | 31篇 |
1979年 | 20篇 |
1978年 | 26篇 |
1977年 | 23篇 |
1976年 | 18篇 |
1975年 | 16篇 |
1974年 | 23篇 |
1973年 | 18篇 |
1971年 | 11篇 |
排序方式: 共有3030条查询结果,搜索用时 0 毫秒
81.
Edward B. Blanchard Stephen T. Miller Gene G. Abel Mary R. Haynes Rebecca Wicker 《Journal of applied behavior analysis》1979,12(1):99-109
Direct biofeedback of blood pressure was compared with frontal EMG biofeedback and with self-instructed relaxation for the treatment of essential hypertension in a controlled group outcome study. Patients were followed up for four months after the end of treatment. Generalization of treatment effects was assessed through pre- and posttreatment measurements of blood pressure under clinical conditions in a physician's office. There were no significant reductions in diastolic blood pressure. The systolic blood pressure (SBP) of the patients receiving blood pressure biofeedback decreased 8.1 mm mercury (p = 0.07) and the SBP of the patients in the relaxation condition decreased 9.5 mm mercury (p = 0.05). In the generalization measures, there were significant reductions in SBP for the relaxation group. The results are discussed in terms of the general lack of replicability within the area of biofeedback treatment of hypertension. 相似文献
82.
83.
Mary Ann Records Raymond C. Heimbuch Kenneth K. Kidd 《Journal of Fluency Disorders》1977,2(4):271-282
A handedness questionnaire was administered to 446 stutterers and a control group. No significant male/female or stutterer/control effects were found, although both males and stutterers tended to be less right handed. The slight sex effect in handedness is consistent with previously reported studies and with cerebral structural and functional asymmetries. 相似文献
84.
85.
86.
87.
88.
89.
90.
Mary M. Mitchell PhD Michael Shayne Gallaway PhD MA Amy M. Millikan MD MPH Michael Bell MD MPH 《Suicide & life-threatening behavior》2012,42(5):486-494
Suicide is one of the leading causes of death among U.S. Army soldiers. Suicide‐related ideation, which is associated with suicide attempts and suicide, can cause considerable distress. In a sample of 1,663 recently redeployed soldiers, we used factor analysis and structural equation modeling to test the associations between combat exposure, unit cohesion, and their interaction in predicting suicide‐related ideation. We found that combat exposure was a significant risk factor for suicide‐related ideation, while unit cohesion was a significant protective factor. The significant interaction between the two factors indicated that soldiers who experienced greater combat exposure but also had higher levels of unit cohesion had relatively lower levels of suicide‐related ideation. In addition, those who had higher levels of combat exposure and lower unit cohesion were most at risk for suicide‐related ideation. Our findings indicate the importance of unit cohesion in protecting soldiers from suicide‐related ideation and suggest a higher risk group of soldiers who should be targeted for interventions. 相似文献