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   1291722篇
  免费   98948篇
  国内免费   2010篇
耳鼻咽喉   18514篇
儿科学   44802篇
妇产科学   35344篇
基础医学   183828篇
口腔科学   33653篇
临床医学   113236篇
内科学   260593篇
皮肤病学   28180篇
神经病学   101636篇
特种医学   51480篇
外国民族医学   660篇
外科学   197571篇
综合类   27201篇
现状与发展   1篇
一般理论   392篇
预防医学   97629篇
眼科学   28066篇
药学   95677篇
  2篇
中国医学   2435篇
肿瘤学   71780篇
  2018年   13487篇
  2017年   10230篇
  2016年   11200篇
  2015年   12717篇
  2014年   17608篇
  2013年   26927篇
  2012年   37069篇
  2011年   39081篇
  2010年   23344篇
  2009年   22316篇
  2008年   37477篇
  2007年   40231篇
  2006年   40434篇
  2005年   39388篇
  2004年   38397篇
  2003年   37242篇
  2002年   36476篇
  2001年   64089篇
  2000年   66557篇
  1999年   56518篇
  1998年   15272篇
  1997年   13867篇
  1996年   14294篇
  1995年   13554篇
  1994年   12845篇
  1993年   11859篇
  1992年   44605篇
  1991年   43510篇
  1990年   42259篇
  1989年   40147篇
  1988年   36931篇
  1987年   36274篇
  1986年   33650篇
  1985年   32303篇
  1984年   24183篇
  1983年   20299篇
  1982年   11773篇
  1981年   10733篇
  1980年   9543篇
  1979年   21360篇
  1978年   14838篇
  1977年   12545篇
  1976年   11712篇
  1975年   12636篇
  1974年   14674篇
  1973年   14126篇
  1972年   12951篇
  1971年   11738篇
  1970年   11055篇
  1969年   10027篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
61.
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   
62.
63.
OBJECTIVES: To identify and describe current women's thoughts about the menopause, hormone treatment (HT) and perceptions about breast cancer. METHODS: Between December 2004 and January 2005, 4201 postmenopausal women in seven European countries were interviewed via a standardized computer-aided telephone interview protocol. RESULTS: Almost all women reported to have experienced climacteric symptoms, and 63% of the women rated them as being severe. Only 52% of women were aware of the benefits of HT for relief of climacteric symptoms. Although 84% felt that severe symptoms should be treated, only 40% had used HT at some point in time. Thirty-four percent of the women preferring treatment with natural products did so because of the risk of breast cancer associated with HT. HT was recognized by 59% of the women as one of the most important contributors to an increased breast cancer risk. Most women received their information about HT and breast cancer risk from the media. CONCLUSIONS: This European survey reveals that the majority of women experience climacteric symptoms but that their decision whether or not to use HT is highly dependent on their concern about breast cancer risk. An increase in knowledge of the benefits and risks of HT is required for women to make appropriate decisions about hormone use.  相似文献   
64.
65.
Conclusions Limitation of this analysis is participation of limited centers. Though all the regions of the country are represented total number of procedures reported are less. Isolated CABG is commonest procedure performed in 2004. Congenital surgical procedures are more than the valvular heart disease procedure. For appropriate categorization we need standard nomenclature for various congenital surgical procedures.  相似文献   
66.
67.
68.
We report our experience of eight cases of isolated full thickness burns of the penis. Early excision of burns of the penile shaft and repair with a preputial flap or mesh split skin graft produces excellent results, with a reduction in complications and an early re-establishment of sexual function. Conservative treatment of burns of the glans, on the other hand, is appropriate and results in minimal scarring.  相似文献   
69.
The use of additional epidural sympathetic block during and after microvascular surgery in the lower extremities to prevent vasospasm is generally agreed on. However, a significant fall in the perfusion rate of the transplants was seen after application of bupivacaine (Marcain) via the epidural catheter. This effect has, to our knowledge, not been described before and is probably caused by the sympathectomy effect of this type of analgesia.  相似文献   
70.
The present study demonstrates that alcohol-induced memory impairment can be attenuated by pretreatment with an oral tryptophan supplementation. These results provide support for the role of a brain serotonin deficit in this impairment and highlight the impact a dietary manipulation can have on a complex behavioral process.  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