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   71568篇
  免费   4380篇
  国内免费   268篇
耳鼻咽喉   1112篇
儿科学   2027篇
妇产科学   1327篇
基础医学   7935篇
口腔科学   1453篇
临床医学   7037篇
内科学   14860篇
皮肤病学   1117篇
神经病学   6928篇
特种医学   2489篇
外国民族医学   5篇
外科学   12380篇
综合类   853篇
一般理论   95篇
预防医学   5956篇
眼科学   1381篇
药学   4552篇
中国医学   111篇
肿瘤学   4598篇
  2023年   393篇
  2022年   646篇
  2021年   1769篇
  2020年   928篇
  2019年   1550篇
  2018年   1812篇
  2017年   1307篇
  2016年   1338篇
  2015年   1474篇
  2014年   2274篇
  2013年   3205篇
  2012年   4854篇
  2011年   5033篇
  2010年   2761篇
  2009年   2450篇
  2008年   4455篇
  2007年   4715篇
  2006年   4575篇
  2005年   4552篇
  2004年   4296篇
  2003年   3957篇
  2002年   3673篇
  2001年   565篇
  2000年   493篇
  1999年   637篇
  1998年   743篇
  1997年   669篇
  1996年   593篇
  1995年   522篇
  1994年   513篇
  1993年   431篇
  1992年   384篇
  1991年   384篇
  1990年   318篇
  1989年   301篇
  1988年   293篇
  1987年   275篇
  1986年   282篇
  1985年   377篇
  1984年   446篇
  1983年   370篇
  1982年   539篇
  1981年   498篇
  1980年   459篇
  1979年   213篇
  1978年   284篇
  1977年   270篇
  1976年   213篇
  1975年   228篇
  1973年   190篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Cognitive Therapy and Research - Despite interest in psychological inflexibility as a marker of suicide risk, no measure of psychological inflexibility specific to SI exists. The present study...  相似文献   
2.
3.
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs.  相似文献   
4.
5.
6.
7.
8.
9.
A local pedicled vascularized bone flap can prevent the morbidity and cost of free bone flap surgery in small segmental bone defects or long cartilaginous defects of the head and neck. Such flaps can also be useful in patients who are high risk for surgery. The periosteal vascularity of the mandible can be used to design islanded facial artery-based bone flaps, which can be utilized to that extent. Two patients with a small segmental mandibulectomy defect and one patient with a long cricotracheal resection defect underwent reconstruction using three different designs of islanded facial artery osteomyomucosal/osseous flap (iFOMM). The patients had a minimum follow-up period of 18 months. All flaps were successful, with satisfactory healing and without any functional deficit or disease at last follow-up.  相似文献   
10.
BackgroundRural populations face many health disadvantages compared to urban areas. There is a critical need to better understand the current lung cancer screening landscape in these communities to identify targeted areas to improve the impact of this proven tool.MethodsData from the County Health Rankings of New Hampshire and Vermont was reviewed for population density, distribution of adult smokers, and level of education compared to the distribution of Lung Cancer Screening Facilities throughout these two states.ResultsScreening programs in southern counties of Vermont with lower levels of education have decreased access. In New Hampshire, there are no programs within 30 miles of the areas with the largest distribution of smokers, and decreased access in some areas with the lowest levels of education.ConclusionsImproving equitable access to high-quality screening services in rural regions and the creation of targeted interventions to address decreased access in areas of high tobacco use and low education is vital to decreasing the incidence of latestage presentations of lung cancer within these populations.  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