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   4073739篇
  免费   300988篇
  国内免费   10212篇
耳鼻咽喉   57495篇
儿科学   130389篇
妇产科学   111173篇
基础医学   568589篇
口腔科学   116975篇
临床医学   375355篇
内科学   789515篇
皮肤病学   91264篇
神经病学   338081篇
特种医学   158555篇
外国民族医学   1438篇
外科学   610098篇
综合类   91204篇
现状与发展   6篇
一般理论   1720篇
预防医学   325346篇
眼科学   94709篇
药学   301311篇
  11篇
中国医学   7981篇
肿瘤学   213724篇
  2018年   43682篇
  2017年   33600篇
  2016年   38179篇
  2015年   43074篇
  2014年   60655篇
  2013年   92088篇
  2012年   122394篇
  2011年   129867篇
  2010年   77885篇
  2009年   74463篇
  2008年   121872篇
  2007年   129471篇
  2006年   131224篇
  2005年   126847篇
  2004年   122250篇
  2003年   117859篇
  2002年   114693篇
  2001年   187066篇
  2000年   192561篇
  1999年   163315篇
  1998年   48501篇
  1997年   43277篇
  1996年   42908篇
  1995年   41632篇
  1994年   38650篇
  1993年   36167篇
  1992年   129777篇
  1991年   125543篇
  1990年   121351篇
  1989年   117262篇
  1988年   108378篇
  1987年   106758篇
  1986年   100825篇
  1985年   96583篇
  1984年   72647篇
  1983年   62039篇
  1982年   37359篇
  1981年   33623篇
  1979年   66754篇
  1978年   47245篇
  1977年   40033篇
  1976年   37500篇
  1975年   39600篇
  1974年   47992篇
  1973年   45815篇
  1972年   43109篇
  1971年   39929篇
  1970年   37307篇
  1969年   35278篇
  1968年   32451篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
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   
3.
4.
5.
6.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  相似文献   
7.
8.
9.
Pharmaceutical Chemistry Journal - An HPLC-MS method for simultaneous quantitative determination of a novel gestagenic pharmaceutical and two of its metabolites in rat and rabbit blood sera was...  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