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   1713764篇
  免费   112943篇
  国内免费   3910篇
耳鼻咽喉   23271篇
儿科学   52200篇
妇产科学   45538篇
基础医学   231037篇
口腔科学   45310篇
临床医学   146052篇
内科学   336030篇
皮肤病学   33860篇
神经病学   142611篇
特种医学   69058篇
外国民族医学   444篇
外科学   268040篇
综合类   36439篇
现状与发展   6篇
一般理论   736篇
预防医学   127380篇
眼科学   39858篇
药学   123886篇
  8篇
中国医学   3933篇
肿瘤学   104920篇
  2019年   12695篇
  2018年   37106篇
  2017年   29330篇
  2016年   32665篇
  2015年   17922篇
  2014年   25011篇
  2013年   36466篇
  2012年   55255篇
  2011年   70670篇
  2010年   47091篇
  2009年   39095篇
  2008年   65962篇
  2007年   71662篇
  2006年   52895篇
  2005年   53179篇
  2004年   52440篇
  2003年   51241篇
  2002年   48135篇
  2001年   65712篇
  2000年   67124篇
  1999年   57554篇
  1998年   17556篇
  1997年   15876篇
  1996年   14911篇
  1995年   14100篇
  1994年   13069篇
  1992年   43892篇
  1991年   42350篇
  1990年   41523篇
  1989年   40433篇
  1988年   37840篇
  1987年   37260篇
  1986年   35743篇
  1985年   33967篇
  1984年   25884篇
  1983年   22047篇
  1982年   13880篇
  1981年   12677篇
  1979年   24532篇
  1978年   17705篇
  1977年   15381篇
  1976年   13882篇
  1975年   15659篇
  1974年   18497篇
  1973年   17897篇
  1972年   17092篇
  1971年   15944篇
  1970年   15139篇
  1969年   14509篇
  1968年   13596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.
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.
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   
8.
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