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   3266690篇
  免费   237543篇
  国内免费   7126篇
耳鼻咽喉   44314篇
儿科学   106778篇
妇产科学   87967篇
基础医学   476398篇
口腔科学   89927篇
临床医学   303334篇
内科学   627144篇
皮肤病学   68929篇
神经病学   264270篇
特种医学   121310篇
外国民族医学   810篇
外科学   481515篇
综合类   70338篇
现状与发展   13篇
一般理论   1224篇
预防医学   267000篇
眼科学   74821篇
药学   241249篇
  16篇
中国医学   6828篇
肿瘤学   177174篇
  2021年   25803篇
  2019年   26713篇
  2018年   43975篇
  2017年   33546篇
  2016年   37810篇
  2015年   35326篇
  2014年   49320篇
  2013年   75133篇
  2012年   104862篇
  2011年   115888篇
  2010年   69912篇
  2009年   64372篇
  2008年   108381篇
  2007年   116498篇
  2006年   109416篇
  2005年   107077篇
  2004年   102775篇
  2003年   99518篇
  2002年   95544篇
  2001年   142651篇
  2000年   146789篇
  1999年   123398篇
  1998年   36695篇
  1997年   32367篇
  1996年   32270篇
  1995年   30560篇
  1994年   28387篇
  1993年   26686篇
  1992年   96859篇
  1991年   95049篇
  1990年   92480篇
  1989年   88640篇
  1988年   81796篇
  1987年   80243篇
  1986年   75755篇
  1985年   72622篇
  1984年   54277篇
  1983年   46398篇
  1982年   27820篇
  1979年   50069篇
  1978年   35768篇
  1977年   29588篇
  1976年   28630篇
  1975年   30255篇
  1974年   36553篇
  1973年   35212篇
  1972年   32854篇
  1971年   30979篇
  1970年   28722篇
  1969年   26932篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.

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   
52.
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   
53.
54.
55.
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   
56.
57.
58.
59.
60.
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