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   2938422篇
  免费   233332篇
  国内免费   5872篇
耳鼻咽喉   42587篇
儿科学   91309篇
妇产科学   80764篇
基础医学   413823篇
口腔科学   83990篇
临床医学   263917篇
内科学   576659篇
皮肤病学   60406篇
神经病学   245233篇
特种医学   117824篇
外国民族医学   1129篇
外科学   449195篇
综合类   68518篇
现状与发展   1篇
一般理论   1170篇
预防医学   233258篇
眼科学   69235篇
药学   218436篇
  4篇
中国医学   5547篇
肿瘤学   154621篇
  2018年   29950篇
  2016年   25488篇
  2015年   28824篇
  2014年   41538篇
  2013年   63474篇
  2012年   85494篇
  2011年   90304篇
  2010年   53563篇
  2009年   51423篇
  2008年   86034篇
  2007年   91370篇
  2006年   92246篇
  2005年   90062篇
  2004年   86561篇
  2003年   83730篇
  2002年   82518篇
  2001年   135238篇
  2000年   139597篇
  1999年   118252篇
  1998年   34094篇
  1997年   31063篇
  1996年   30832篇
  1995年   29618篇
  1994年   27822篇
  1993年   26044篇
  1992年   94857篇
  1991年   91536篇
  1990年   88556篇
  1989年   85347篇
  1988年   79368篇
  1987年   78140篇
  1986年   74351篇
  1985年   70869篇
  1984年   53589篇
  1983年   45735篇
  1982年   27939篇
  1981年   24733篇
  1980年   23303篇
  1979年   50268篇
  1978年   35256篇
  1977年   29869篇
  1976年   28034篇
  1975年   29782篇
  1974年   36479篇
  1973年   34696篇
  1972年   32610篇
  1971年   30128篇
  1970年   28522篇
  1969年   26608篇
  1968年   24535篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
Introduction: Percutaneous renal mass biopsy has evolved over the last decade with improvements on previous pitfalls including low tissue yield, high non-diagnostic rates, and complications. As understanding of tumor biology and natural history of renal cortical neoplasms has improved, percutaneous renal mass biopsy is poised to have an expanding role in an area characterized by individualized management and refined risk stratification.

Areas covered: This review summarizes the evolution of renal mass biopsy to its current state with respect to outcomes, indications, and clinical guidelines.

Expert opinion: With improved understanding of differential biological potential of renal cortical neoplasms combined with technical improvements in diagnostic yield and accuracy, utilization of renal mass biopsy is becoming an important adjunct to patient care in a broad range of clinical scenarios, including active surveillance, thermal ablation, and use of primary systemic therapy in localized and advanced settings.  相似文献   

32.
33.
34.
Secondary tricuspid regurgitation (TR) caused by right ventricular enlargement in the setting of left heart disease/pulmonary hypertension has been well described. In contrast, that associated with right atrial enlargement—atrial functional TR (AF‐TR)—remains largely underappreciated. AF‐TR most often occurs in the setting of lone atrial fibrillation, although it is also seen in its absence (idiopathic AF‐TR). Several recent studies have found that the prevalence, hemodynamic significance, and prognosis of AF‐TR are not inconsequential, suggesting increased physician awareness of this novel clinical entity is warranted. This article discusses the pathogenesis, echocardiographic findings, and treatment of this underappreciated cause of secondary TR.  相似文献   
35.
36.
37.

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   
38.
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   
39.
40.
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