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   2166589篇
  免费   159176篇
  国内免费   5032篇
耳鼻咽喉   30726篇
儿科学   69231篇
妇产科学   62580篇
基础医学   307867篇
口腔科学   63665篇
临床医学   190690篇
内科学   419497篇
皮肤病学   49348篇
神经病学   172314篇
特种医学   85397篇
外国民族医学   723篇
外科学   330903篇
综合类   51272篇
现状与发展   6篇
一般理论   829篇
预防医学   161245篇
眼科学   51067篇
药学   160689篇
  6篇
中国医学   4557篇
肿瘤学   118185篇
  2018年   20790篇
  2016年   18541篇
  2015年   20859篇
  2014年   28997篇
  2013年   44284篇
  2012年   58164篇
  2011年   61736篇
  2010年   36880篇
  2009年   35307篇
  2008年   58484篇
  2007年   63004篇
  2006年   63912篇
  2005年   61689篇
  2004年   60148篇
  2003年   58192篇
  2002年   56687篇
  2001年   100344篇
  2000年   102981篇
  1999年   87013篇
  1998年   24010篇
  1997年   21770篇
  1996年   21281篇
  1995年   20237篇
  1994年   18977篇
  1993年   17646篇
  1992年   68710篇
  1991年   66696篇
  1990年   65730篇
  1989年   63954篇
  1988年   58963篇
  1987年   58616篇
  1986年   55576篇
  1985年   53205篇
  1984年   39880篇
  1983年   33739篇
  1982年   20282篇
  1981年   18480篇
  1979年   37824篇
  1978年   27159篇
  1977年   23403篇
  1976年   21503篇
  1975年   23687篇
  1974年   28392篇
  1973年   27452篇
  1972年   25959篇
  1971年   24244篇
  1970年   22878篇
  1969年   21793篇
  1968年   20251篇
  1967年   18203篇
排序方式: 共有10000条查询结果,搜索用时 16 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.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
3.

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   
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.
8.
9.
10.
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   
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