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   128056篇
  免费   8730篇
  国内免费   548篇
耳鼻咽喉   1368篇
儿科学   3749篇
妇产科学   2214篇
基础医学   17145篇
口腔科学   2319篇
临床医学   12635篇
内科学   27060篇
皮肤病学   1568篇
神经病学   12457篇
特种医学   3984篇
外国民族医学   1篇
外科学   18244篇
综合类   1779篇
现状与发展   1篇
一般理论   160篇
预防医学   11297篇
眼科学   3519篇
药学   9057篇
  1篇
中国医学   291篇
肿瘤学   8485篇
  2023年   575篇
  2022年   853篇
  2021年   2452篇
  2020年   1457篇
  2019年   2480篇
  2018年   2891篇
  2017年   2105篇
  2016年   2435篇
  2015年   2811篇
  2014年   4058篇
  2013年   5726篇
  2012年   8692篇
  2011年   9344篇
  2010年   5118篇
  2009年   4776篇
  2008年   8232篇
  2007年   8742篇
  2006年   8318篇
  2005年   8369篇
  2004年   7932篇
  2003年   7328篇
  2002年   7044篇
  2001年   1356篇
  2000年   1052篇
  1999年   1370篇
  1998年   1515篇
  1997年   1277篇
  1996年   990篇
  1995年   992篇
  1994年   851篇
  1993年   841篇
  1992年   769篇
  1991年   726篇
  1990年   647篇
  1989年   590篇
  1988年   592篇
  1987年   576篇
  1986年   509篇
  1985年   565篇
  1984年   626篇
  1983年   575篇
  1982年   751篇
  1981年   657篇
  1980年   593篇
  1979年   423篇
  1978年   412篇
  1977年   409篇
  1976年   337篇
  1974年   334篇
  1973年   310篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
We report a case of benign lymphoplasmacytic plaque (LPP) in a child. These asymptomatic erythematous papulonodular lesions are an emerging clinicopathological entity. Herein, we describe a previously unreported site for LPP lesions, namely, the volar wrist and the distal ipsilateral palm.  相似文献   
4.

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   
5.
6.
7.
8.
9.
10.

Objective

Arch obstruction after the Norwood procedure is common and contributes to mortality. We determined the prevalence, associated factors, and practice variability of arch reintervention and assessed whether arch reintervention is associated with mortality.

Methods

From 2005 to 2017, 593 neonates in the Congenital Heart Surgeons' Society Critical Left Heart Obstruction cohort underwent a Norwood procedure. Median follow-up was 3.7 years. Multivariable parametric models, including a modulated renewal analysis, were performed.

Results

Of the 593 neonates, 146 (25%) underwent 218 reinterventions for arch obstruction after the Norwood procedure: catheter-based (n = 168) or surgical (n = 50) at a median age of 4.3 months (quartile 1-quartile 3, 2.6-5.7). Interdigitation of the distal aortic anastomosis was protective against arch reintervention. Development of ≥ moderate tricuspid valve regurgitation and right ventricular dysfunction at any point was associated with arch reintervention. Nonsignificant variables for arch reintervention included shunt type and preoperative aortic measurements. Surgical arch reintervention was protective against arch reintervention, but transcatheter reintervention was associated with increased reintervention. Arch reintervention was not associated with increased mortality. There was wide institutional variation in incidence of arch reintervention (range, 0-40 reinterventions per 100 years patient follow-up) and in preintervention gradient (range, 0-64 mm Hg).

Conclusions

Interdigitation of the distal aortic anastomosis during the Norwood procedure decreased the risk of arch reintervention. Surgical arch reintervention is more definitive than transcatheter. Arch reintervention after the Norwood procedure is not associated with increased mortality. Serial surveillance for arch obstruction, integrated with changes in right ventricular function and tricuspid valve regurgitation, is recommended after the Norwood procedure to improve outcomes.  相似文献   
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