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   1605012篇
  免费   115382篇
  国内免费   4032篇
耳鼻咽喉   22828篇
儿科学   47378篇
妇产科学   43987篇
基础医学   224078篇
口腔科学   45255篇
临床医学   140084篇
内科学   318221篇
皮肤病学   34001篇
神经病学   132584篇
特种医学   63158篇
外国民族医学   484篇
外科学   248066篇
综合类   34625篇
现状与发展   6篇
一般理论   800篇
预防医学   115404篇
眼科学   38257篇
药学   118709篇
  10篇
中国医学   3441篇
肿瘤学   93050篇
  2019年   13421篇
  2018年   17958篇
  2017年   14139篇
  2016年   15708篇
  2015年   17958篇
  2014年   25380篇
  2013年   37599篇
  2012年   51325篇
  2011年   54095篇
  2010年   31961篇
  2009年   30108篇
  2008年   50589篇
  2007年   54426篇
  2006年   54811篇
  2005年   53473篇
  2004年   51603篇
  2003年   49278篇
  2002年   47934篇
  2001年   67028篇
  2000年   68310篇
  1999年   58818篇
  1998年   18065篇
  1997年   16227篇
  1996年   15341篇
  1995年   14515篇
  1994年   13395篇
  1992年   44857篇
  1991年   43226篇
  1990年   42333篇
  1989年   41270篇
  1988年   38554篇
  1987年   37993篇
  1986年   36478篇
  1985年   34626篇
  1984年   26340篇
  1983年   22513篇
  1982年   14188篇
  1981年   12983篇
  1979年   24982篇
  1978年   17970篇
  1977年   15633篇
  1976年   14092篇
  1975年   15945篇
  1974年   18779篇
  1973年   18155篇
  1972年   17341篇
  1971年   16170篇
  1970年   15312篇
  1969年   14656篇
  1968年   13709篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional...  相似文献   
2.

Interstitial lung disease (ILD) represents a significant cause of morbidity and mortality in systemic sclerosis (SSc). The purpose of this study was to examine recirculating lymphocytes from SSc patients for potential biomarkers of interstitial lung disease (ILD). Peripheral blood mononuclear cells (PBMCs) were isolated from patients with SSc and healthy controls enrolled in the Vanderbilt University Myositis and Scleroderma Treatment Initiative Center cohort between 9/2017–6/2019. Clinical phenotyping was performed by chart abstraction. Immunophenotyping was performed using both mass cytometry and fluorescence cytometry combined with t-distributed stochastic neighbor embedding analysis and traditional biaxial gating. This study included 34 patients with SSc-ILD, 14 patients without SSc-ILD, and 25 healthy controls. CD21lo/neg cells are significantly increased in SSc-ILD but not in SSc without ILD (15.4 ± 13.3% vs. 5.8 ± 0.9%, p = 0.002) or healthy controls (5.0 ± 0.5%, p < 0.0001). While CD21lo/neg B cells can be identified from a single biaxial gate, tSNE analysis reveals that the biaxial gate is comprised of multiple distinct subsets, all of which are increased in SSc-ILD. CD21lo/neg cells in both healthy controls and SSc-ILD are predominantly tBET positive and do not have intracellular CD21. Immunohistochemistry staining demonstrated that CD21lo/neg B cells diffusely infiltrate the lung parenchyma of an SSc-ILD patient. Additional work is needed to validate this biomarker in larger cohorts and longitudinal studies and to understand the role of these cells in SSc-ILD.

  相似文献   
3.
Die Anaesthesiologie - Auch wenn für Anästhesiologen über Jahrzehnte die Prophylaxe und Therapie postoperativer Schmerzen im Rahmen des postoperativen Patientenkomforts an vorderster...  相似文献   
4.
5.
6.
7.
8.
BackgroundTotal hip and knee arthroplasties are increasingly performed operations, and routine follow-up places huge demands on orthopedic services. This study investigates the effectiveness, patients’ satisfaction, and cost reduction of Virtual Joint Replacement Clinic (VJRC) follow-up of total hip arthroplasty and total knee arthroplasty patients in a university hospital. VJRC is especially valuable when in-person appointments are not advised or feasible such as during the COVID-19 pandemic.MethodsA total of 1749 patients who were invited for VJRC follow-up for knee or hip arthroplasty from January 2017 to December 2018 were included in this retrospective study. Patients were referred to VJRC after their 6-week postoperative review. Routine VJRC postoperative review was undertaken at 1 and 7 years and then 3-yearly thereafter. We evaluated the VJRC patient response rate, acceptability, and outcome. Patient satisfaction was measured in a subgroup of patients using a satisfaction survey. VJRC costs were calculated compared to face-to-face follow-up.ResultsThe VJRC had a 92.05% overall response rate. Only 7.22% required further in-person appointments with only 3% being reviewed by an orthopedic consultant. VJRC resulted in an estimated saving of £42,644 per year at our institution. The patients’ satisfaction survey showed that 89.29% of the patients were either satisfied or very satisfied with VJRC follow-up.ConclusionVJRC follow-up for hip and knee arthroplasty patients is an effective alternative to in-person clinic assessment which is accepted by patients, has high patient satisfaction, and can reduce the cost to both health services and patients.  相似文献   
9.
10.
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