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   1558516篇
  免费   119257篇
  国内免费   3697篇
耳鼻咽喉   20198篇
儿科学   50711篇
妇产科学   44625篇
基础医学   221864篇
口腔科学   43062篇
临床医学   134812篇
内科学   316029篇
皮肤病学   37402篇
神经病学   128541篇
特种医学   57488篇
外国民族医学   465篇
外科学   227454篇
综合类   33630篇
现状与发展   3篇
一般理论   512篇
预防医学   128011篇
眼科学   35395篇
药学   110161篇
  1篇
中国医学   3913篇
肿瘤学   87193篇
  2021年   13527篇
  2019年   14607篇
  2018年   21296篇
  2017年   15648篇
  2016年   17271篇
  2015年   19274篇
  2014年   26252篇
  2013年   38918篇
  2012年   54505篇
  2011年   57628篇
  2010年   33123篇
  2009年   30646篇
  2008年   52040篇
  2007年   55098篇
  2006年   55193篇
  2005年   53420篇
  2004年   50706篇
  2003年   48208篇
  2002年   46368篇
  2001年   76476篇
  2000年   78470篇
  1999年   64588篇
  1998年   17651篇
  1997年   15867篇
  1996年   15995篇
  1995年   15165篇
  1994年   13711篇
  1993年   12847篇
  1992年   47615篇
  1991年   45079篇
  1990年   43139篇
  1989年   41008篇
  1988年   37581篇
  1987年   36687篇
  1986年   34251篇
  1985年   32571篇
  1984年   24780篇
  1983年   20829篇
  1982年   12640篇
  1981年   11172篇
  1979年   21849篇
  1978年   15336篇
  1977年   12830篇
  1976年   12071篇
  1975年   12457篇
  1974年   15041篇
  1973年   14641篇
  1972年   13693篇
  1971年   12475篇
  1970年   11869篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France.  相似文献   
2.
3.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
4.
5.
6.
7.
8.
9.
Metabolism describes the series of chemical reactions that are concerned with the provision of energy to biological systems. They may be divided into reactions involved in energy yield (catabolism: demand exceeds supply), and energy storage (anabolism: supply exceeds demand). Regulation of these pathways is critical for homeostasis, and derangements in metabolism are seen in a wide variety of pathological processes. Understanding metabolism is key to the treatment of many diseases, notably diabetes, as well as underpinning clinical nutritional support.  相似文献   
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