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   24950篇
  免费   1588篇
  国内免费   206篇
耳鼻咽喉   203篇
儿科学   684篇
妇产科学   688篇
基础医学   3675篇
口腔科学   409篇
临床医学   2016篇
内科学   6122篇
皮肤病学   487篇
神经病学   3512篇
特种医学   800篇
外科学   2266篇
综合类   47篇
一般理论   4篇
预防医学   1323篇
眼科学   303篇
药学   1828篇
中国医学   41篇
肿瘤学   2336篇
  2024年   50篇
  2023年   343篇
  2022年   680篇
  2021年   1155篇
  2020年   622篇
  2019年   820篇
  2018年   1003篇
  2017年   747篇
  2016年   873篇
  2015年   949篇
  2014年   1225篇
  2013年   1537篇
  2012年   2121篇
  2011年   2171篇
  2010年   1226篇
  2009年   1107篇
  2008年   1739篇
  2007年   1579篇
  2006年   1473篇
  2005年   1317篇
  2004年   1118篇
  2003年   978篇
  2002年   784篇
  2001年   100篇
  2000年   78篇
  1999年   111篇
  1998年   146篇
  1997年   99篇
  1996年   80篇
  1995年   64篇
  1994年   68篇
  1993年   35篇
  1992年   36篇
  1991年   41篇
  1990年   36篇
  1989年   39篇
  1988年   32篇
  1987年   25篇
  1986年   24篇
  1985年   15篇
  1984年   13篇
  1983年   12篇
  1982年   9篇
  1981年   13篇
  1980年   11篇
  1979年   14篇
  1978年   6篇
  1977年   4篇
  1974年   3篇
  1966年   3篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
93.
94.
95.
96.
97.
Both osteoporosis with related fragility fractures and cardiovascular diseases are rapidly outspreading worldwide. Since they are often coexistent in elderly patients and may be related to possible common pathogenetic mechanisms, the possible reciprocal effects of drugs employed to treat these diseases have to be considered in clinical practice. Bisphosphonates, the agents most largely employed to decrease bone fragility, have been shown to be overall safe with respect to cardiovascular diseases and even capable of reducing cardiovascular morbidity in some settings, as mainly shown by real life studies. No randomized controlled trials with cardiovascular outcomes as primary endpoints are available. While contradictory results have emerged about a possible BSP-mediated reduction of overall mortality, it is undeniable that these drugs can be employed safely in patients with high fracture risk, since no increased mortality has ever been demonstrated. Although partial reassurance has emerged from meta-analysis assessing the risk of cardiac arrhythmias during bisphosphonates treatment, caution is warranted in administering this class of drugs to patients at risk for atrial fibrillation, possibly preferring other antiresorptives or anabolics, according to osteoporosis guidelines. This paper focuses on the complex relationship between bisphosphonates use and cardiovascular disease and possible co-management issues.  相似文献   
98.
Background: SARC-F is a simple sarcopenia screening tool. This study aimed to examine the validity of the Italian version of SARC-F. Methods: A total of 97 elderly individuals (37/60 males/females, 65 years and older) who met the study’s selection criteria were included. SARC-F was translated into the Italian language in a culturally responsive manner. The total score was calculated by adding the scores on the five items. The participants were divided into two groups according to the total score (SARC-F < 4 vs. SARC-F ≥ 4), and their associations with various factors (handgrip test, chair stand test, and Skeletal Muscle Index assessed by DXA) have been examined by gender. In addition, the tool’s validity was analyzed by comparing it with different international working group diagnostic criteria for sarcopenia. Results: The total prevalence of sarcopenia according to the SARC-F was 14.2% and, specifically, 12.8% among men and 14.3% in women. The sensitivity of the SARC-F was (male (M): 11–50% and female (F): 22–36%) medium-low compared with the European, international, and Asian criteria of sarcopenia; however, SARC-F showed a high specificity (M: 77.3–100% and F: 79.5–100%) and a moderate Cronbach’s alpha coefficient of (0.669 (CI95%: 0.358–0.830). The participants in the SARC-F ≥ 4 group had poorer handgrip for EWGSOP2 (p < 0.001) and chair stand (p < 0.001) than the participants in the SARC-F < 4 group. Conclusions: The Italian language version of SARC-F showed high specificity, moderate reliability, and good associations with other predictive tests. The Italian version of SARC-F appears to be a useful screening tool for the diagnosis of sarcopenia in Italian elderly populations.  相似文献   
99.
100.
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