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   5381055篇
  免费   419979篇
  国内免费   16180篇
耳鼻咽喉   77645篇
儿科学   170897篇
妇产科学   143910篇
基础医学   798056篇
口腔科学   152102篇
临床医学   496210篇
内科学   980125篇
皮肤病学   125145篇
神经病学   445276篇
特种医学   210997篇
外国民族医学   1291篇
外科学   813385篇
综合类   152410篇
现状与发展   23篇
一般理论   2973篇
预防医学   456029篇
眼科学   130170篇
药学   384574篇
  27篇
中国医学   13777篇
肿瘤学   262192篇
  2021年   56892篇
  2019年   59349篇
  2018年   76842篇
  2017年   58818篇
  2016年   65610篇
  2015年   77555篇
  2014年   112494篇
  2013年   178035篇
  2012年   154169篇
  2011年   164980篇
  2010年   134964篇
  2009年   133421篇
  2008年   150438篇
  2007年   162598篇
  2006年   169249篇
  2005年   164124篇
  2004年   163680篇
  2003年   153202篇
  2002年   143067篇
  2001年   209280篇
  2000年   207543篇
  1999年   185386篇
  1998年   78171篇
  1997年   72166篇
  1996年   70095篇
  1995年   65756篇
  1994年   59713篇
  1993年   55258篇
  1992年   138990篇
  1991年   134935篇
  1990年   130132篇
  1989年   126161篇
  1988年   116936篇
  1987年   114871篇
  1986年   108645篇
  1985年   106132篇
  1984年   85342篇
  1983年   75033篇
  1982年   54588篇
  1981年   50445篇
  1980年   47313篇
  1979年   77476篇
  1978年   59791篇
  1977年   51732篇
  1976年   48805篇
  1975年   49893篇
  1974年   57557篇
  1973年   55141篇
  1972年   52079篇
  1971年   48337篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.

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   
112.
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   
113.
114.
115.
116.
117.
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   
118.
119.
120.
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