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   3049152篇
  免费   265041篇
  国内免费   13415篇
耳鼻咽喉   41853篇
儿科学   96273篇
妇产科学   76616篇
基础医学   499593篇
口腔科学   81571篇
临床医学   275594篇
内科学   527582篇
皮肤病学   85327篇
神经病学   261014篇
特种医学   119469篇
外国民族医学   103篇
外科学   478260篇
综合类   94748篇
现状与发展   23篇
一般理论   2140篇
预防医学   256139篇
眼科学   69758篇
药学   207804篇
  20篇
中国医学   9767篇
肿瘤学   143954篇
  2021年   55189篇
  2020年   35227篇
  2019年   58228篇
  2018年   70849篇
  2017年   53569篇
  2016年   59022篇
  2015年   73517篇
  2014年   107758篇
  2013年   172899篇
  2012年   83336篇
  2011年   81851篇
  2010年   114753篇
  2009年   119514篇
  2008年   68590篇
  2007年   70418篇
  2006年   81565篇
  2005年   76822篇
  2004年   78877篇
  2003年   69829篇
  2002年   59700篇
  2001年   85380篇
  2000年   77268篇
  1999年   80740篇
  1998年   63239篇
  1997年   61434篇
  1996年   59113篇
  1995年   54649篇
  1994年   48811篇
  1993年   45580篇
  1992年   54487篇
  1991年   52286篇
  1990年   49377篇
  1989年   49536篇
  1988年   45777篇
  1987年   44546篇
  1986年   42338篇
  1985年   42859篇
  1984年   41138篇
  1983年   38240篇
  1982年   38968篇
  1981年   37028篇
  1980年   34994篇
  1979年   32898篇
  1978年   30830篇
  1977年   28656篇
  1976年   26309篇
  1975年   24922篇
  1974年   24670篇
  1973年   23554篇
  1972年   22021篇
排序方式: 共有10000条查询结果,搜索用时 843 毫秒
121.

Objectives

To determine: (i) the behaviour change techniques used by a sample of Australian physiotherapists to promote non-treatment physical activity; and (ii) whether those behaviour change techniques are different to the techniques used to encourage adherence to rehabilitation exercises.

Design

Cross-sectional survey.

Method

An online self-report survey was advertised to private practice and outpatient physiotherapists treating patients with musculoskeletal conditions. The use of 50 behaviour change techniques were measured using five-point Likert-type scale questions.

Results

Four-hundred and eighty-six physiotherapists responded to the survey, with 216 surveys fully completed. Most respondents (85.1%) promoted non-treatment physical activity often or all of the time. Respondents frequently used 29 behaviour change techniques to promote non-treatment physical activity or encourage adherence to rehabilitation exercises. A similar number of behaviour change techniques was frequently used to encourage adherence to rehabilitation exercises (n = 28) and promote non-treatment physical activity (n = 26). Half of the behaviour change techniques included in the survey were frequently used for both promoting non-treatment physical activity and encouraging adherence to rehabilitation exercises (n = 25). Graded tasks was the most, and punishment was the least, frequently reported technique used to promote non-treatment physical activity and encourage adherence to rehabilitation exercises.

Conclusions

Respondents reported using similar behaviour change techniques to promote non-treatment physical activity and encourage adherence to rehabilitation exercises. The variability in behaviour change technique use suggests the behaviour the physiotherapist is promoting influences their behaviour change technique choice. Including the frequently-used behaviour change techniques in non-treatment physical activity promotion interventions might improve their efficacy.  相似文献   
122.
G. Berlin  M. Hammar  L. Tapper 《Platelets》2019,30(4):473-479
Platelets are needed to prevent or arrest bleeding and aggregate at the site of injury upon vascular damage. Platelets express receptors for estrogens which might affect the function of the platelets and their hemostatic ability. The aim was to identify possible differences in platelet function related to age, gender, and phases of the menstrual cycle by use of impedance aggregometry with Multiplate. In the first part of the study, platelet function was assessed in 60 healthy individuals (30 men and 30 women) in each of three age groups (20–25, 40–45, and 60–65 years). In the second part of the study, the platelet function was analyzed on four occasions during the menstrual cycle in women without oral contraceptives (OCs) (n = 17) and compared to 19 women on OCs and 18 men of similar age (20–40 years). For the women on OCs, aggregation was analyzed once during the tablet-free week and once late during the period with OCs. The men were sampled once. Women of younger age (<45 years) had significantly higher agonist-induced aggregation response than both men and post-menopausal women (60–65 years). The agonist-induced aggregation response did not differ between phases of the menstrual cycle or OC use. The results suggest that estradiol and/or progesterone affect spontaneous aggregation since it was found to be lowest in the mid-luteal phase. Spontaneous aggregation was significantly lower in women on OCs than in both men and women without OCs. Our findings indicate that fertile age is associated with higher aggregation response capacity of the platelets, possibly to prevent excessive bleeding during menstruation, but this response capacity is not altered during the menstrual cycle or by use of OCs.  相似文献   
123.
124.
125.
126.
127.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
128.
129.
130.
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