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   21203篇
  免费   5656篇
  国内免费   126篇
耳鼻咽喉   633篇
儿科学   620篇
妇产科学   693篇
基础医学   305篇
口腔科学   2644篇
临床医学   4149篇
内科学   5046篇
皮肤病学   454篇
神经病学   1816篇
特种医学   984篇
外科学   3770篇
综合类   56篇
现状与发展   12篇
预防医学   2697篇
眼科学   319篇
药学   207篇
中国医学   6篇
肿瘤学   2574篇
  2024年   163篇
  2023年   1090篇
  2022年   354篇
  2021年   630篇
  2020年   1212篇
  2019年   476篇
  2018年   1320篇
  2017年   1283篇
  2016年   1499篇
  2015年   1554篇
  2014年   1953篇
  2013年   2354篇
  2012年   750篇
  2011年   708篇
  2010年   1343篇
  2009年   1936篇
  2008年   731篇
  2007年   486篇
  2006年   633篇
  2005年   447篇
  2004年   318篇
  2003年   282篇
  2002年   246篇
  2001年   379篇
  2000年   273篇
  1999年   378篇
  1998年   498篇
  1997年   481篇
  1996年   533篇
  1995年   386篇
  1994年   300篇
  1993年   262篇
  1992年   178篇
  1991年   155篇
  1990年   147篇
  1989年   146篇
  1988年   127篇
  1987年   121篇
  1986年   102篇
  1985年   93篇
  1984年   81篇
  1983年   92篇
  1982年   90篇
  1981年   71篇
  1980年   45篇
  1979年   34篇
  1978年   33篇
  1977年   44篇
  1976年   32篇
  1975年   29篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
The AIDS epidemic has caused hysteria among the public and concern to many healthcare workers in the past 12 years. Currently, legislation exists for mandatory AIDS testing in some populations. The questions remain: Should healthcare workers be routinely tested? If so, is mandatory testing ethical? The author explores the incidence and prevalence of AIDS among healthcare workers, discusses why mandatory testing for healthcare workers is an issue, and examines the legal and ethical principles involved in mandatory testing.  相似文献   
94.
Complementary modalities, used alone or in combination with pharmacologic therapies, play an important role in the prevention and management of postoperative nausea and vomiting (PONV) and post discharge nausea and vomiting (PDNV). This article will review the evidence for the effective use of complementary modalities: acupuncture and related techniques, aromatherapy, and music therapy that may be integrated in the perianesthesia nurse's plan of care to prevent or manage PONV.  相似文献   
95.
96.
97.
98.
Comparison of the use of nalbuphine and fentanyl during third molar surgery   总被引:1,自引:0,他引:1  
In a double-blind, randomized plan of drug administration, nalbuphine, fentanyl, and a placebo were compared for efficacy in sedation and analgesia during third molar removal. Fifty-eight patients participated in this study. Using accepted intravenous sedation and surgical techniques, fentanyl and nalbuphine were found to be better than placebo for anxiety and pain control in third molar surgery. Fentanyl had a longer duration of pain relief postoperatively than did nalbuphine. The study confirmed the need for a narcotic supplement to sedation techniques for third molar surgery.  相似文献   
99.
Many care-dependent elderly individuals live in nursing homes and must depend on nursing home aides for oral hygiene care. It is generally agreed that the level of oral hygiene care among care-dependent nursing home residents is less than optimal. Two reasons are time constraints and the difficulty involved in brushing other individuals' teeth. The identification of effective and efficient plaque-removal devices for use by care-providers should make it easier for nursing home aides to incorporate effective oral hygiene care into their daily routines. This pilot study was undertaken to determine the relative effectiveness of four plaque removal devices with different basic designs when used by a non-professional careprovider on 10 healthy volunteers. A brush with curved bristles on the lateral aspect of the brush head and short straight bristles in the center (Collis-curve) and an electric toothbrush with tuffs that rotate reciprocally (Interplak) were the most effective, a conventional brush (Oral-B) was somewhat less effective, and a disposable foam brush (Abco) was least effective and similar to the prebrushing plaque score (baseline). All the volunteers reported that the Collis-curve as the most comfortable brush, and the care-provider reported that it was the easiest to use.  相似文献   
100.
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