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   5377975篇
  免费   420199篇
  国内免费   16170篇
耳鼻咽喉   77663篇
儿科学   170888篇
妇产科学   143996篇
基础医学   798283篇
口腔科学   152155篇
临床医学   495951篇
内科学   978853篇
皮肤病学   125240篇
神经病学   445256篇
特种医学   211062篇
外国民族医学   1293篇
外科学   813608篇
综合类   152418篇
现状与发展   23篇
一般理论   2977篇
预防医学   453907篇
眼科学   130124篇
药学   384722篇
  24篇
中国医学   13788篇
肿瘤学   262113篇
  2021年   56942篇
  2019年   59407篇
  2018年   76908篇
  2017年   58527篇
  2016年   65349篇
  2015年   77278篇
  2014年   112286篇
  2013年   177897篇
  2012年   154498篇
  2011年   165347篇
  2010年   135111篇
  2009年   133531篇
  2008年   150706篇
  2007年   162906篇
  2006年   169544篇
  2005年   164412篇
  2004年   163948篇
  2003年   153404篇
  2002年   143360篇
  2001年   209309篇
  2000年   207599篇
  1999年   185430篇
  1998年   78212篇
  1997年   72187篇
  1996年   70122篇
  1995年   65781篇
  1994年   59737篇
  1993年   55287篇
  1992年   139011篇
  1991年   134965篇
  1990年   130158篇
  1989年   126170篇
  1988年   116958篇
  1987年   114877篇
  1986年   108658篇
  1985年   106163篇
  1984年   85362篇
  1983年   75038篇
  1982年   54594篇
  1981年   50449篇
  1980年   47321篇
  1979年   77478篇
  1978年   59793篇
  1977年   51747篇
  1976年   48806篇
  1975年   49895篇
  1974年   57563篇
  1973年   55151篇
  1972年   52077篇
  1971年   48329篇
排序方式: 共有10000条查询结果,搜索用时 296 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