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   2387454篇
  免费   171679篇
  国内免费   4466篇
耳鼻咽喉   35264篇
儿科学   75593篇
妇产科学   69809篇
基础医学   341295篇
口腔科学   69989篇
临床医学   203120篇
内科学   465364篇
皮肤病学   52138篇
神经病学   188159篇
特种医学   93921篇
外国民族医学   778篇
外科学   370441篇
综合类   53164篇
现状与发展   7篇
一般理论   711篇
预防医学   171411篇
眼科学   56413篇
药学   181403篇
  4篇
中国医学   4992篇
肿瘤学   129623篇
  2018年   21703篇
  2015年   21536篇
  2014年   29938篇
  2013年   45841篇
  2012年   61209篇
  2011年   65293篇
  2010年   38779篇
  2009年   36953篇
  2008年   63077篇
  2007年   68655篇
  2006年   69589篇
  2005年   67949篇
  2004年   65691篇
  2003年   63772篇
  2002年   62882篇
  2001年   109170篇
  2000年   112348篇
  1999年   95424篇
  1998年   26352篇
  1997年   23848篇
  1996年   23493篇
  1995年   22193篇
  1994年   21020篇
  1993年   19353篇
  1992年   75791篇
  1991年   74079篇
  1990年   72957篇
  1989年   71207篇
  1988年   66368篇
  1987年   65189篇
  1986年   62313篇
  1985年   59342篇
  1984年   44449篇
  1983年   38190篇
  1982年   22783篇
  1981年   20462篇
  1979年   42425篇
  1978年   30128篇
  1977年   26074篇
  1976年   24113篇
  1975年   26980篇
  1974年   31935篇
  1973年   30910篇
  1972年   29597篇
  1971年   27586篇
  1970年   25888篇
  1969年   25010篇
  1968年   23503篇
  1967年   20819篇
  1966年   19457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