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   6278篇
  免费   633篇
  国内免费   35篇
耳鼻咽喉   32篇
儿科学   255篇
妇产科学   150篇
基础医学   889篇
口腔科学   263篇
临床医学   709篇
内科学   1149篇
皮肤病学   80篇
神经病学   322篇
特种医学   310篇
外科学   1029篇
综合类   203篇
一般理论   5篇
预防医学   596篇
眼科学   140篇
药学   394篇
中国医学   6篇
肿瘤学   414篇
  2021年   84篇
  2020年   58篇
  2019年   66篇
  2018年   120篇
  2017年   112篇
  2016年   98篇
  2015年   122篇
  2014年   173篇
  2013年   250篇
  2012年   239篇
  2011年   238篇
  2010年   185篇
  2009年   207篇
  2008年   228篇
  2007年   230篇
  2006年   237篇
  2005年   219篇
  2004年   221篇
  2003年   197篇
  2002年   215篇
  2001年   154篇
  2000年   155篇
  1999年   164篇
  1998年   148篇
  1997年   117篇
  1996年   149篇
  1995年   104篇
  1994年   123篇
  1993年   73篇
  1992年   134篇
  1991年   139篇
  1990年   140篇
  1989年   157篇
  1988年   146篇
  1987年   128篇
  1986年   143篇
  1985年   130篇
  1984年   93篇
  1983年   76篇
  1982年   72篇
  1981年   59篇
  1980年   56篇
  1979年   66篇
  1978年   60篇
  1976年   61篇
  1975年   40篇
  1974年   43篇
  1973年   52篇
  1972年   39篇
  1969年   45篇
排序方式: 共有6946条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
We report the case of a patient with a 13-year history of pemphigus vulgaris (PV) treated with immunosuppressive agents, prednisone and mycophenolate mofetil who had developed lesions of Kaposi's sarcoma (KS) on a sole plaque of PV that had been previously treated with intralesional injections of steroids. The lesions were surgically removed and polymerase chain reaction (PCR) demonstrated human herpesvirus-8 (HHV-8) DNA. There were neither recurrences nor later dissemination of KS following gradual decrease of the immunosuppressive therapy. We suggest that the treatment with intralesional steroids may have influenced the local reactivation of a latent infection of the virus, determining the appearance of this localized KS.  相似文献   
5.
6.
Most prosthetic joint infections (PJI) are due to wound contamination at the time of surgery. Some infections occur due to the hematogenous spread of bacteria from distant sites of infection. A review of the literature fails to associate PJI with transient bacteremias from invasive dental procedures. Several authors have described conditions which, they believe, render patients with prosthetic joints more at risk for infection. Prosthetic joint patients with these "high risk" conditions have the same types of infecting organisms as other patients with PJI. This indicates that the infecting bacteria are from wound contamination or distant sites of infection and not related to dental procedure bacteremias. Based on this review, antibiotic prophylaxis is not indicated for patients with prosthetic joints when receiving invasive dental procedures, since there is no proven benefit and there are known risks involved with the use of antibiotics. However, the American Dental Association (ADA) and the American Academy of Orthopaedic Surgeons (AAOS), in an advisory statement, suggest prophylaxis for "high risk" patients. The ADA and AAOS recommend a single dose of amoxicillin, cephradine, or clindamycin when prophylaxis is selected. The dentist is ultimately responsible for making treatment recommendations for his or her patients.  相似文献   
7.
8.
An educational intervention was developed to improve family practice residents' ability to obtain useful information from pharmaceutical representatives. The curriculum is based on the traditional one-on-one drug detail. The objectives are to develop residents' skills in controlling the interview, promote skills for critically analyzing drug-promotional material, and discuss ethical issues. The contents include an assessment tool, suggested readings, and interview questions with rationale. After 5 years, residents' confidence in all areas of the curriculum improved significantly.  相似文献   
9.
10.
Changes in the height, weight, body mass index, triceps skinfold, and arm and estimated midarm muscle circumferences in lower socioeconomic Mexican American children, 6 through 17 years of age, from Brownsville, Texas, were documented on the basis of surveys done in 1972 and 1983. With the exception of height in youths ages 14-17, all parameters show gains at most ages, and in particular an increase in fatness. Brownsville Mexican American youth are similar in height, weight, and the body mass index to Mexican American youth in other areas of Texas. These trends confirm the large proportion of relatively short but heavy children among Mexican Americans.  相似文献   
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