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   2883131篇
  免费   253477篇
  国内免费   12863篇
耳鼻咽喉   39907篇
儿科学   91617篇
妇产科学   72976篇
基础医学   477632篇
口腔科学   77804篇
临床医学   258931篇
内科学   491551篇
皮肤病学   82487篇
神经病学   248750篇
特种医学   113284篇
外国民族医学   90篇
外科学   456436篇
综合类   88660篇
现状与发展   23篇
一般理论   2104篇
预防医学   245710篇
眼科学   66168篇
药学   195809篇
  17篇
中国医学   8586篇
肿瘤学   130929篇
  2021年   54627篇
  2020年   34840篇
  2019年   57790篇
  2018年   69929篇
  2017年   52776篇
  2016年   58073篇
  2015年   72685篇
  2014年   106807篇
  2013年   171815篇
  2012年   75485篇
  2011年   73639篇
  2010年   112309篇
  2009年   117773篇
  2008年   61157篇
  2007年   62039篇
  2006年   73646篇
  2005年   69391篇
  2004年   71728篇
  2003年   62940篇
  2002年   53262篇
  2001年   73973篇
  2000年   66081篇
  1999年   71590篇
  1998年   61918篇
  1997年   60400篇
  1996年   58206篇
  1995年   53690篇
  1994年   47847篇
  1993年   44802篇
  1992年   47884篇
  1991年   46254篇
  1990年   43867篇
  1989年   43866篇
  1988年   40744篇
  1987年   39921篇
  1986年   37972篇
  1985年   38855篇
  1984年   38527篇
  1983年   36075篇
  1982年   38096篇
  1981年   36351篇
  1980年   34353篇
  1979年   30923篇
  1978年   29749篇
  1977年   27751篇
  1976年   25488篇
  1975年   24152篇
  1974年   23873篇
  1973年   22653篇
  1972年   21515篇
排序方式: 共有10000条查询结果,搜索用时 15 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