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   2390923篇
  免费   176345篇
  国内免费   4415篇
耳鼻咽喉   35361篇
儿科学   77689篇
妇产科学   67529篇
基础医学   337333篇
口腔科学   68195篇
临床医学   206119篇
内科学   471786篇
皮肤病学   53184篇
神经病学   189295篇
特种医学   95870篇
外国民族医学   1057篇
外科学   369459篇
综合类   53895篇
现状与发展   7篇
一般理论   779篇
预防医学   173366篇
眼科学   55471篇
药学   179463篇
  5篇
中国医学   5014篇
肿瘤学   130806篇
  2018年   22855篇
  2016年   19542篇
  2015年   22121篇
  2014年   30983篇
  2013年   47413篇
  2012年   63832篇
  2011年   67668篇
  2010年   40360篇
  2009年   38768篇
  2008年   64882篇
  2007年   70231篇
  2006年   70740篇
  2005年   68789篇
  2004年   67240篇
  2003年   65160篇
  2002年   64087篇
  2001年   114038篇
  2000年   117826篇
  1999年   100044篇
  1998年   27181篇
  1997年   24600篇
  1996年   24418篇
  1995年   23112篇
  1994年   21709篇
  1993年   20246篇
  1992年   78446篇
  1991年   76372篇
  1990年   74599篇
  1989年   72103篇
  1988年   66870篇
  1987年   65886篇
  1986年   62251篇
  1985年   59366篇
  1984年   44552篇
  1983年   37695篇
  1982年   22294篇
  1981年   20322篇
  1979年   41464篇
  1978年   29172篇
  1977年   25092篇
  1976年   23052篇
  1975年   25717篇
  1974年   30282篇
  1973年   29267篇
  1972年   27661篇
  1971年   25529篇
  1970年   24165篇
  1969年   22761篇
  1968年   21098篇
  1967年   18922篇
排序方式: 共有10000条查询结果,搜索用时 687 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