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   3691372篇
  免费   320505篇
  国内免费   13700篇
耳鼻咽喉   50859篇
儿科学   118246篇
妇产科学   97191篇
基础医学   580419篇
口腔科学   102675篇
临床医学   330554篇
内科学   659088篇
皮肤病学   95177篇
神经病学   316566篇
特种医学   148489篇
外国民族医学   497篇
外科学   571947篇
综合类   113667篇
现状与发展   23篇
一般理论   2375篇
预防医学   306906篇
眼科学   85655篇
药学   259419篇
  19篇
中国医学   10122篇
肿瘤学   175683篇
  2021年   55029篇
  2020年   35074篇
  2019年   57988篇
  2018年   71408篇
  2017年   54108篇
  2016年   59921篇
  2015年   73869篇
  2014年   108182篇
  2013年   173281篇
  2012年   97149篇
  2011年   97547篇
  2010年   117716篇
  2009年   122049篇
  2008年   85322篇
  2007年   88624篇
  2006年   99575篇
  2005年   94693篇
  2004年   97296篇
  2003年   87761篇
  2002年   77620篇
  2001年   120831篇
  2000年   115127篇
  1999年   111696篇
  1998年   67009篇
  1997年   64576篇
  1996年   62570篇
  1995年   58188篇
  1994年   52342篇
  1993年   48883篇
  1992年   82933篇
  1991年   79397篇
  1990年   75940篇
  1989年   74613篇
  1988年   69441篇
  1987年   68133篇
  1986年   64927篇
  1985年   64804篇
  1984年   56579篇
  1983年   51281篇
  1982年   44753篇
  1981年   41911篇
  1980年   39511篇
  1979年   48958篇
  1978年   40956篇
  1977年   36774篇
  1976年   34075篇
  1975年   32836篇
  1974年   35532篇
  1973年   34193篇
  1972年   31690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