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   2383757篇
  免费   171280篇
  国内免费   4461篇
耳鼻咽喉   35210篇
儿科学   75490篇
妇产科学   69751篇
基础医学   340676篇
口腔科学   69900篇
临床医学   202615篇
内科学   464485篇
皮肤病学   52177篇
神经病学   187830篇
特种医学   93859篇
外国民族医学   779篇
外科学   370013篇
综合类   53220篇
现状与发展   7篇
一般理论   713篇
预防医学   170966篇
眼科学   56272篇
药学   181207篇
  4篇
中国医学   4989篇
肿瘤学   129335篇
  2018年   21643篇
  2015年   21467篇
  2014年   29869篇
  2013年   45760篇
  2012年   60986篇
  2011年   65116篇
  2010年   38695篇
  2009年   36862篇
  2008年   62941篇
  2007年   68471篇
  2006年   69445篇
  2005年   67816篇
  2004年   65565篇
  2003年   63653篇
  2002年   62781篇
  2001年   109074篇
  2000年   112260篇
  1999年   95352篇
  1998年   26323篇
  1997年   23812篇
  1996年   23471篇
  1995年   22176篇
  1994年   20996篇
  1993年   19319篇
  1992年   75742篇
  1991年   74039篇
  1990年   72914篇
  1989年   71164篇
  1988年   66321篇
  1987年   65146篇
  1986年   62259篇
  1985年   59306篇
  1984年   44424篇
  1983年   38131篇
  1982年   22774篇
  1981年   20440篇
  1979年   42391篇
  1978年   30106篇
  1977年   26058篇
  1976年   24104篇
  1975年   26971篇
  1974年   31911篇
  1973年   30896篇
  1972年   29584篇
  1971年   27562篇
  1970年   25869篇
  1969年   24996篇
  1968年   23487篇
  1967年   20820篇
  1966年   19444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