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   2384964篇
  免费   171251篇
  国内免费   4469篇
耳鼻咽喉   35215篇
儿科学   75530篇
妇产科学   69772篇
基础医学   340977篇
口腔科学   69930篇
临床医学   202721篇
内科学   464927篇
皮肤病学   52121篇
神经病学   187974篇
特种医学   93888篇
外国民族医学   778篇
外科学   369997篇
综合类   53059篇
现状与发展   7篇
一般理论   711篇
预防医学   170986篇
眼科学   56325篇
药学   181305篇
  5篇
中国医学   4990篇
肿瘤学   129466篇
  2018年   21656篇
  2015年   21472篇
  2014年   29876篇
  2013年   45763篇
  2012年   61002篇
  2011年   65126篇
  2010年   38707篇
  2009年   36899篇
  2008年   62982篇
  2007年   68489篇
  2006年   69456篇
  2005年   67818篇
  2004年   65572篇
  2003年   63673篇
  2002年   62800篇
  2001年   109082篇
  2000年   112233篇
  1999年   95336篇
  1998年   26322篇
  1997年   23817篇
  1996年   23473篇
  1995年   22180篇
  1994年   20998篇
  1993年   19323篇
  1992年   75710篇
  1991年   73989篇
  1990年   72892篇
  1989年   71128篇
  1988年   66275篇
  1987年   65126篇
  1986年   62230篇
  1985年   59277篇
  1984年   44386篇
  1983年   38117篇
  1982年   22769篇
  1981年   20441篇
  1979年   42380篇
  1978年   30104篇
  1977年   26052篇
  1976年   24094篇
  1975年   26956篇
  1974年   31912篇
  1973年   30880篇
  1972年   29579篇
  1971年   27557篇
  1970年   25870篇
  1969年   24980篇
  1968年   23485篇
  1967年   20803篇
  1966年   19438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.
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