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   2380788篇
  免费   175703篇
  国内免费   4422篇
耳鼻咽喉   35282篇
儿科学   77483篇
妇产科学   67390篇
基础医学   335940篇
口腔科学   67818篇
临床医学   205149篇
内科学   469507篇
皮肤病学   53159篇
神经病学   188148篇
特种医学   95569篇
外国民族医学   1056篇
外科学   368222篇
综合类   53737篇
现状与发展   7篇
一般理论   767篇
预防医学   172537篇
眼科学   55155篇
药学   178768篇
  5篇
中国医学   5014篇
肿瘤学   130200篇
  2018年   22706篇
  2016年   19391篇
  2015年   21945篇
  2014年   30711篇
  2013年   46966篇
  2012年   63238篇
  2011年   66976篇
  2010年   40039篇
  2009年   38427篇
  2008年   64114篇
  2007年   69435篇
  2006年   69917篇
  2005年   67993篇
  2004年   66480篇
  2003年   64418篇
  2002年   63350篇
  2001年   113965篇
  2000年   117750篇
  1999年   99948篇
  1998年   27063篇
  1997年   24492篇
  1996年   24340篇
  1995年   23021篇
  1994年   21652篇
  1993年   20196篇
  1992年   78364篇
  1991年   76309篇
  1990年   74523篇
  1989年   72084篇
  1988年   66835篇
  1987年   65847篇
  1986年   62235篇
  1985年   59317篇
  1984年   44494篇
  1983年   37645篇
  1982年   22192篇
  1981年   20226篇
  1979年   41432篇
  1978年   29150篇
  1977年   25071篇
  1976年   23051篇
  1975年   25703篇
  1974年   30264篇
  1973年   29273篇
  1972年   27667篇
  1971年   25528篇
  1970年   24182篇
  1969年   22759篇
  1968年   21089篇
  1967年   18918篇
排序方式: 共有10000条查询结果,搜索用时 640 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