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   1554870篇
  免费   112032篇
  国内免费   3894篇
耳鼻咽喉   22204篇
儿科学   46003篇
妇产科学   42711篇
基础医学   216073篇
口腔科学   43825篇
临床医学   135120篇
内科学   308505篇
皮肤病学   33235篇
神经病学   127819篇
特种医学   61035篇
外国民族医学   444篇
外科学   241807篇
综合类   34191篇
现状与发展   6篇
一般理论   735篇
预防医学   111307篇
眼科学   37229篇
药学   115179篇
  9篇
中国医学   3302篇
肿瘤学   90057篇
  2019年   12652篇
  2018年   17021篇
  2017年   13498篇
  2016年   14933篇
  2015年   17043篇
  2014年   24269篇
  2013年   35693篇
  2012年   48868篇
  2011年   51501篇
  2010年   30137篇
  2009年   28546篇
  2008年   48283篇
  2007年   52026篇
  2006年   52412篇
  2005年   51199篇
  2004年   49335篇
  2003年   47266篇
  2002年   45897篇
  2001年   65478篇
  2000年   66770篇
  1999年   57412篇
  1998年   17372篇
  1997年   15702篇
  1996年   14848篇
  1995年   14018篇
  1994年   12988篇
  1992年   43869篇
  1991年   42278篇
  1990年   41416篇
  1989年   40375篇
  1988年   37802篇
  1987年   37235篇
  1986年   35724篇
  1985年   33943篇
  1984年   25868篇
  1983年   22029篇
  1982年   13857篇
  1981年   12677篇
  1979年   24532篇
  1978年   17697篇
  1977年   15381篇
  1976年   13874篇
  1975年   15655篇
  1974年   18479篇
  1973年   17898篇
  1972年   17092篇
  1971年   15943篇
  1970年   15120篇
  1969年   14491篇
  1968年   13579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