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   1425436篇
  免费   101899篇
  国内免费   3289篇
耳鼻咽喉   20817篇
儿科学   42597篇
妇产科学   40279篇
基础医学   198481篇
口腔科学   41542篇
临床医学   122311篇
内科学   280105篇
皮肤病学   31426篇
神经病学   115463篇
特种医学   57261篇
外国民族医学   438篇
外科学   223079篇
综合类   32093篇
现状与发展   6篇
一般理论   565篇
预防医学   99802篇
眼科学   33346篇
药学   106189篇
  3篇
中国医学   3087篇
肿瘤学   81734篇
  2018年   14022篇
  2016年   12383篇
  2015年   13959篇
  2014年   19794篇
  2013年   29549篇
  2012年   39857篇
  2011年   42098篇
  2010年   24883篇
  2009年   23934篇
  2008年   40046篇
  2007年   43386篇
  2006年   43793篇
  2005年   42201篇
  2004年   41182篇
  2003年   39493篇
  2002年   38735篇
  2001年   64487篇
  2000年   65914篇
  1999年   56268篇
  1998年   15766篇
  1997年   14333篇
  1996年   13643篇
  1995年   12876篇
  1994年   12020篇
  1992年   43242篇
  1991年   41697篇
  1990年   40943篇
  1989年   39878篇
  1988年   37289篇
  1987年   36726篇
  1986年   35192篇
  1985年   33410篇
  1984年   25139篇
  1983年   21322篇
  1982年   12983篇
  1981年   11838篇
  1979年   24066篇
  1978年   17222篇
  1977年   14950篇
  1976年   13491篇
  1975年   15347篇
  1974年   18168篇
  1973年   17644篇
  1972年   16890篇
  1971年   15777篇
  1970年   14970篇
  1969年   14403篇
  1968年   13510篇
  1967年   12051篇
  1966年   11285篇
排序方式: 共有10000条查询结果,搜索用时 15 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.
4.
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   
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