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   1202333篇
  免费   122928篇
  国内免费   591篇
  2018年   11719篇
  2017年   11349篇
  2016年   16979篇
  2015年   23846篇
  2014年   27190篇
  2013年   37165篇
  2012年   40514篇
  2011年   39273篇
  2010年   27399篇
  2009年   25562篇
  2008年   34012篇
  2007年   35345篇
  2006年   33026篇
  2005年   36878篇
  2004年   35383篇
  2003年   32796篇
  2002年   29949篇
  2001年   52008篇
  2000年   51304篇
  1999年   41335篇
  1998年   14752篇
  1997年   15147篇
  1996年   14265篇
  1995年   13270篇
  1994年   12765篇
  1993年   12798篇
  1992年   34085篇
  1991年   33146篇
  1990年   32268篇
  1989年   31549篇
  1988年   29021篇
  1987年   27626篇
  1986年   25688篇
  1985年   25702篇
  1984年   21109篇
  1983年   18095篇
  1982年   13634篇
  1981年   12458篇
  1980年   11620篇
  1979年   19857篇
  1978年   15543篇
  1977年   14041篇
  1976年   13237篇
  1975年   14779篇
  1974年   15979篇
  1973年   15706篇
  1972年   14378篇
  1971年   13017篇
  1970年   11367篇
  1969年   11065篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
Argon laser surgery is an effective treatment for ectasias and congenital port-wine stains; however, its use in children under the age of 13 is controversial. This paper reviews 202 children under the age of 13 who underwent argon laser treatments for congenital port-wine stains, spider angiomas, epidermal nevi, and lentigines. The clinical characteristics of port-wine stains in 170 children are discussed. Good to excellent results (moderate to complete clearing) in port-wine stains were obtained in 60 percent of patients and seemed to correlate best with lack of blanchability on pressure. Hypertrophic scarring was seen in only 7 children, all of whom had undressed wounds; no significant scarring has been seen in any subsequent child who had maintained a dressed wound postoperatively.  相似文献   
104.
Reconstruction of bony structures of the face is always a problem as big as the defect and the function that must be replaced. Everything from simple grafts to sophisticated distant bone flaps has been used. Based on the studies of Cutting et al., Psillakis et al., and Casanova et al., we have developed the full-thickness galeoparietal bone flap, initially for mandibular reconstruction, but of great use for all maxillofacial reconstructions. From July of 1987 to December of 1988, 14 patients have been operated on. The experience with this flap is shown in four patients as follows: primary reconstruction of a mandible as a result of ameloblastoma, secondary reconstruction of a mandible with associated old fractures and malalignment of segments, bilateral malar reconstruction in a patient with Treacher Collins syndrome, and severe sequelae of an already treated Romberg case. Small variations could be made to best accommodate the technique used to the defect we were treating. Some technical details, the experience, the results, and possible sequelae or complications are also discussed.  相似文献   
105.
Trigger finger is a relatively common clinical entity, most frequently caused by stenosing tenosynovitis. Several other conditions not related to tenosynovitis also have been described as a cause of triggering, and these have been reviewed. We present a rare anomaly of the fourth lumbrical muscle insertion as a cause of triggering of the right little finger. This was completely relieved following excision of the anomalous muscle. This rare anatomic variant should be added to the list of potential causes of trigger finger.  相似文献   
106.
107.
108.
109.
110.
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