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   3490326篇
  免费   287535篇
  国内免费   14628篇
耳鼻咽喉   48525篇
儿科学   107110篇
妇产科学   91512篇
基础医学   547774篇
口腔科学   97048篇
临床医学   308913篇
内科学   619691篇
皮肤病学   93170篇
神经病学   298172篇
特种医学   139065篇
外国民族医学   454篇
外科学   544322篇
综合类   107285篇
现状与发展   24篇
一般理论   2269篇
预防医学   284798篇
眼科学   79904篇
药学   243574篇
  23篇
中国医学   10431篇
肿瘤学   168425篇
  2021年   55139篇
  2020年   35200篇
  2019年   58231篇
  2018年   71063篇
  2017年   54267篇
  2016年   60036篇
  2015年   74131篇
  2014年   108388篇
  2013年   173615篇
  2012年   90687篇
  2011年   89812篇
  2010年   115764篇
  2009年   120934篇
  2008年   77543篇
  2007年   81113篇
  2006年   91837篇
  2005年   87144篇
  2004年   89350篇
  2003年   80653篇
  2002年   70935篇
  2001年   109361篇
  2000年   102455篇
  1999年   101393篇
  1998年   65256篇
  1997年   63146篇
  1996年   60664篇
  1995年   56114篇
  1994年   50340篇
  1993年   47024篇
  1992年   71749篇
  1991年   68045篇
  1990年   65029篇
  1989年   64366篇
  1988年   60247篇
  1987年   58878篇
  1986年   56364篇
  1985年   55992篇
  1984年   50510篇
  1983年   45780篇
  1982年   42324篇
  1981年   39787篇
  1980年   37636篇
  1979年   42954篇
  1978年   37358篇
  1977年   34281篇
  1976年   31047篇
  1975年   30695篇
  1974年   32412篇
  1973年   31086篇
  1972年   29507篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
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   
83.
84.
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   
85.
86.
87.
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