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   17743篇
  免费   1106篇
  国内免费   141篇
耳鼻咽喉   111篇
儿科学   492篇
妇产科学   370篇
基础医学   2869篇
口腔科学   342篇
临床医学   1464篇
内科学   4495篇
皮肤病学   300篇
神经病学   1799篇
特种医学   447篇
外科学   1326篇
综合类   48篇
一般理论   5篇
预防医学   1393篇
眼科学   205篇
药学   1329篇
中国医学   61篇
肿瘤学   1934篇
  2024年   24篇
  2023年   193篇
  2022年   386篇
  2021年   660篇
  2020年   394篇
  2019年   540篇
  2018年   583篇
  2017年   484篇
  2016年   547篇
  2015年   596篇
  2014年   753篇
  2013年   998篇
  2012年   1622篇
  2011年   1620篇
  2010年   891篇
  2009年   799篇
  2008年   1307篇
  2007年   1207篇
  2006年   1153篇
  2005年   996篇
  2004年   907篇
  2003年   758篇
  2002年   652篇
  2001年   85篇
  2000年   47篇
  1999年   94篇
  1998年   122篇
  1997年   99篇
  1996年   92篇
  1995年   50篇
  1994年   44篇
  1993年   49篇
  1992年   28篇
  1991年   25篇
  1990年   23篇
  1989年   9篇
  1988年   12篇
  1987年   17篇
  1986年   10篇
  1985年   7篇
  1984年   17篇
  1983年   11篇
  1982年   12篇
  1981年   10篇
  1980年   9篇
  1979年   6篇
  1978年   5篇
  1975年   5篇
  1973年   10篇
  1971年   4篇
排序方式: 共有10000条查询结果,搜索用时 76 毫秒
81.
Necrotizing fasciitis is defined as a rapidly progressive infection of the skin and soft tissue that usually involves severe systemic toxicity. The incidence of this infection has increased in the last few decades and is estimated to affect one out of every 100,000 inhabitants in western European countries. This disease is the most serious form of skin and soft tissue infection, due to rapid destruction and necrosis of the fascia and subcutaneous fat, and the development of shock and multiorgan failure in about one third of patients.Although there are several predisposing factors for the development of the disease, especially for type I, or polymicrobial, necrotizing fasciitis, many patients are young and have no underlying chronic diseases, as is the case for type II, or streptococcal, necrotizing fasciitis. The diagnosis is mainly clinical, and urgent surgical consultation is required as soon as possible once suspicion is high, as the main determinant of mortality is the delay in surgical treatment. Overall mortality remains high, affecting more than 25% of patients. Surgical debridement is the mainstay of treatment, along with hemodynamic support and broad-spectrum antibiotics.  相似文献   
82.
83.
84.
85.
86.
The risk of needing help with household tasks or of requiring care in old age increases. Using semi-structured, qualitative interviews, beliefs about the usefulness versus uselessness of planning ahead for future care needs (FCN) were investigated in 23 East German, 10 U.S., and 10 Canadian elderly-community dwelling women ( S 65 years). Primary reasons in favor of planning for FCN were: gaining a feeling of security regarding the future, avoiding being a burden to potential helpers, and coping with one's present health conditions. Factors that prevent planning for FCN were: the difficulty foreseeing FCN, the lack of resources to plan, and low levels of perceived vulnerability. The women dealt with the contradictions between these factors that promote and prevent preparation by making general plans which could be adapted in the case of needing help by developing alternative plans or by avoidance of thinking about possible future health crises.  相似文献   
87.
88.
89.
90.
This study examined factors affecting young adults' attitudes about nonfatal suicidal behavior. It evaluated how respondent sex, respondent gender identity, the precipitant of the suicidal act (i.e., a relationship loss, an achievement failure, or a physical illness), and gender of the suicidal person influence reactions to a suicidal decision. In this study of nonfatal suicidal behavior, like in studies of suicide, attitudes were least negative when the suicidal act was in response to a physical illness. Men were more likely to agree with and accept the suicidal decision than women. Androgynous persons, on the other hand, tended to view the decision to kill oneself as foolish, independent of precipitant. They also reported less agreement, acceptance, and sympathy for such decision. The implications of these findings for the prevention of suicidal behaviors are considered. Because gender seems to play a role in the acceptability of suicidal behavior, prevention programs ought to explicitly examine gender issues in attitudes toward suicidal behavior.  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