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   397819篇
  免费   25984篇
  国内免费   2977篇
耳鼻咽喉   5311篇
儿科学   9330篇
妇产科学   10379篇
基础医学   55494篇
口腔科学   12132篇
临床医学   31277篇
内科学   81575篇
皮肤病学   8941篇
神经病学   28439篇
特种医学   14595篇
外国民族医学   87篇
外科学   63299篇
综合类   10736篇
现状与发展   1篇
一般理论   65篇
预防医学   18779篇
眼科学   10470篇
药学   32914篇
  6篇
中国医学   2492篇
肿瘤学   30458篇
  2021年   3013篇
  2019年   3021篇
  2018年   4881篇
  2017年   3720篇
  2016年   3869篇
  2015年   4428篇
  2014年   6280篇
  2013年   8143篇
  2012年   11116篇
  2011年   11350篇
  2010年   6856篇
  2009年   6372篇
  2008年   10367篇
  2007年   11225篇
  2006年   11075篇
  2005年   10081篇
  2004年   9508篇
  2003年   9242篇
  2002年   8883篇
  2001年   28829篇
  2000年   29362篇
  1999年   24194篇
  1998年   5396篇
  1997年   4463篇
  1996年   4017篇
  1995年   3653篇
  1994年   3245篇
  1993年   2995篇
  1992年   16397篇
  1991年   15183篇
  1990年   14484篇
  1989年   14328篇
  1988年   12857篇
  1987年   12357篇
  1986年   11339篇
  1985年   10585篇
  1984年   7133篇
  1983年   5801篇
  1982年   2842篇
  1979年   5656篇
  1978年   3463篇
  1977年   3074篇
  1976年   2339篇
  1975年   2770篇
  1974年   3194篇
  1973年   2990篇
  1972年   2945篇
  1971年   2912篇
  1970年   2611篇
  1969年   2620篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
61.
International Journal of Legal Medicine - Sex identification is a primary step in forensic analysis of skeletal remains. The accuracy of sex estimation methods greatly depends on the sexual...  相似文献   
62.
63.
64.
Inflammation, an important contributory factor of muscle and bone aging, is potentially modulated by diet. This study examined the associations of dietary inflammatory index (DII) score with musculoskeletal parameters and related disease outcomes in 3995 community-dwelling Chinese men and women aged ≥65 years in Hong Kong. DII score at baseline was estimated from a food frequency questionnaire. Bone mineral density (BMD) and muscle mass estimated by dual-energy X-ray absorptiometry (DXA), hand grip strength, gait speed, and chair stand test were measured at baseline, year 4, and year 14. The associations of DII score with the longitudinal changes of musculoskeletal parameters, and incidence of osteoporosis, sarcopenia, and fractures were examined by using general linear model, multinomial logistic regression model, and Cox proportional hazards regression model, respectively. After multiple adjustments, each tertile increase in DII score in men was associated with 0.37 (95% confidence interval [CI], 0.10–0.64) kg loss in grip strength and 0.02 (95% CI, 0.01–0.03) m/s loss in gait speed over 4 years. In men, the highest tertile of DII was associated with a higher risk of incident fractures, with adjusted and competing death adjusted hazard ratio (HR) (95% CI) of 1.56 (1.14–2.14) and 1.40 (1.02–1.91), respectively. In women, DII score was not significantly associated with any muscle-related outcomes or incidence of fracture, but a significant association between higher DII score and risk of osteoporosis at year 14 was observed, with the highest tertile of DII score having adjusted odds ratio (OR) (95% CI) of 1.90 (1.03–3.52). In conclusion, pro-inflammatory diet consumption promoted loss of muscle strength and physical function, and increased risk of fractures in older Chinese men. Pro-inflammatory diets had no significant association with muscle related outcomes but increased the long-term risk of osteoporosis in older Chinese women. © 2022 American Society for Bone and Mineral Research (ASBMR).  相似文献   
65.
66.
67.
68.
69.
Abstract

Purpose: We examined underlying psychosocial processes of a behavioral treatment for urinary incontinence (UI) of prostate cancer survivors.

Design: Secondary analysis of data collected from a clinical trial.

Sample: Two hundred forty-four prostate cancer survivors who participated in a clinical trial of behavioral intervention to UI as intervention or control subjects.

Methods: The participants had a 3-month behavioral intervention or usual care and were followed up for an additional 3?months. They were assessed at baseline, 3, and 6?months. Latent growth curve models were performed to examine trajectories of each study variable and relationships among the variables.

Findings: Increasing self-efficacy and social support were significantly and independently associated with more reduction of urinary leakage frequency over time.

Implications for psychosocial oncology: Providing problem-solving skills and social support, including peer support, are essential for empowering patients to reduce UI.  相似文献   
70.
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