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   2393795篇
  免费   171812篇
  国内免费   4502篇
耳鼻咽喉   35314篇
儿科学   75743篇
妇产科学   70119篇
基础医学   342133篇
口腔科学   70169篇
临床医学   203500篇
内科学   466324篇
皮肤病学   52348篇
神经病学   189147篇
特种医学   94323篇
外国民族医学   780篇
外科学   371451篇
综合类   53109篇
现状与发展   7篇
一般理论   749篇
预防医学   171565篇
眼科学   56407篇
药学   181920篇
  4篇
中国医学   5008篇
肿瘤学   129989篇
  2018年   21872篇
  2015年   21651篇
  2014年   30169篇
  2013年   46134篇
  2012年   61609篇
  2011年   65767篇
  2010年   39023篇
  2009年   37223篇
  2008年   63405篇
  2007年   69002篇
  2006年   70036篇
  2005年   68321篇
  2004年   66010篇
  2003年   64112篇
  2002年   63210篇
  2001年   109386篇
  2000年   112563篇
  1999年   95565篇
  1998年   26462篇
  1997年   23933篇
  1996年   23537篇
  1995年   22246篇
  1994年   21050篇
  1993年   19394篇
  1992年   75846篇
  1991年   74145篇
  1990年   73031篇
  1989年   71248篇
  1988年   66391篇
  1987年   65263篇
  1986年   62336篇
  1985年   59370篇
  1984年   44458篇
  1983年   38179篇
  1982年   22820篇
  1981年   20507篇
  1979年   42453篇
  1978年   30141篇
  1977年   26100篇
  1976年   24146篇
  1975年   27021篇
  1974年   31982篇
  1973年   30941篇
  1972年   29637篇
  1971年   27599篇
  1970年   25909篇
  1969年   25024篇
  1968年   23533篇
  1967年   20832篇
  1966年   19480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