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   2382357篇
  免费   171246篇
  国内免费   4459篇
耳鼻咽喉   35200篇
儿科学   75490篇
妇产科学   69724篇
基础医学   340618篇
口腔科学   69900篇
临床医学   202433篇
内科学   464099篇
皮肤病学   52081篇
神经病学   187871篇
特种医学   93776篇
外国民族医学   778篇
外科学   369846篇
综合类   53039篇
现状与发展   7篇
一般理论   711篇
预防医学   170778篇
眼科学   56250篇
药学   181145篇
  3篇
中国医学   4988篇
肿瘤学   129325篇
  2018年   21645篇
  2015年   21467篇
  2014年   29872篇
  2013年   45734篇
  2012年   61003篇
  2011年   65114篇
  2010年   38681篇
  2009年   36868篇
  2008年   62942篇
  2007年   68469篇
  2006年   69451篇
  2005年   67824篇
  2004年   65550篇
  2003年   63644篇
  2002年   62750篇
  2001年   109069篇
  2000年   112233篇
  1999年   95326篇
  1998年   26314篇
  1997年   23805篇
  1996年   23474篇
  1995年   22167篇
  1994年   21001篇
  1993年   19321篇
  1992年   75700篇
  1991年   73987篇
  1990年   72870篇
  1989年   71126篇
  1988年   66272篇
  1987年   65123篇
  1986年   62222篇
  1985年   59255篇
  1984年   44383篇
  1983年   38115篇
  1982年   22771篇
  1981年   20447篇
  1979年   42381篇
  1978年   30100篇
  1977年   26047篇
  1976年   24089篇
  1975年   26951篇
  1974年   31902篇
  1973年   30886篇
  1972年   29569篇
  1971年   27546篇
  1970年   25828篇
  1969年   24949篇
  1968年   23452篇
  1967年   20768篇
  1966年   19418篇
排序方式: 共有10000条查询结果,搜索用时 31 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