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   4358832篇
  免费   349075篇
  国内免费   14694篇
耳鼻咽喉   60400篇
儿科学   139867篇
妇产科学   114528篇
基础医学   667676篇
口腔科学   118101篇
临床医学   399355篇
内科学   791903篇
皮肤病学   107855篇
神经病学   369159篇
特种医学   169604篇
外国民族医学   753篇
外科学   656799篇
综合类   121444篇
现状与发展   24篇
一般理论   2649篇
预防医学   362230篇
眼科学   100974篇
药学   308183篇
  26篇
中国医学   11945篇
肿瘤学   219126篇
  2021年   56234篇
  2020年   35885篇
  2019年   58901篇
  2018年   74514篇
  2017年   57071篇
  2016年   63202篇
  2015年   76162篇
  2014年   110378篇
  2013年   176056篇
  2012年   125078篇
  2011年   129861篇
  2010年   126189篇
  2009年   127844篇
  2008年   116104篇
  2007年   123546篇
  2006年   132206篇
  2005年   126303篇
  2004年   127655篇
  2003年   117699篇
  2002年   106984篇
  2001年   166975篇
  2000年   162057篇
  1999年   148714篇
  1998年   71748篇
  1997年   67671篇
  1996年   65687篇
  1995年   61106篇
  1994年   55024篇
  1993年   51065篇
  1992年   106634篇
  1991年   101409篇
  1990年   97272篇
  1989年   94841篇
  1988年   87169篇
  1987年   85323篇
  1986年   80220篇
  1985年   78373篇
  1984年   65420篇
  1983年   58220篇
  1982年   47244篇
  1981年   43885篇
  1980年   41096篇
  1979年   55117篇
  1978年   44776篇
  1977年   39992篇
  1976年   36858篇
  1975年   36832篇
  1974年   39649篇
  1973年   37779篇
  1972年   35363篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
83.
84.
85.
We review the spectrum of cutaneous disorders associated with inflammatory and neoplastic plasmacytic pathology. Because plasma cells are derived from B‐lymphocytes our overview includes discussion of certain lymphoplasmacytic proliferations. It is structured along histopathological lines, addressing conditions characterized by (a) cutaneous plasma cell infiltrates, (b) deposits of plasma cell products or their derivatives in the skin and (c) miscellaneous, poorly understood cutaneous complications of plasmacytic disorders. Lesions arising primarily in the skin and those due to cutaneous involvement by multisystem disorders are addressed. The range includes a spectrum of tumefactive and circulatory manifestations. We highlight key clinical and pathological features of the different conditions and outline recent advances in our understanding of these entities. By emphasizing the dermatopathological characteristics of this spectrum of disorders we hope to hone the diagnostic accuracy of practitioners in the field.  相似文献   
86.
87.
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   
88.
89.
90.
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