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   6426篇
  免费   1304篇
  国内免费   17篇
耳鼻咽喉   152篇
儿科学   23篇
妇产科学   7篇
基础医学   26篇
口腔科学   6553篇
临床医学   113篇
内科学   126篇
皮肤病学   67篇
神经病学   42篇
特种医学   19篇
外科学   466篇
预防医学   63篇
眼科学   4篇
药学   3篇
肿瘤学   83篇
  2024年   26篇
  2023年   340篇
  2021年   21篇
  2020年   102篇
  2019年   18篇
  2018年   216篇
  2017年   320篇
  2016年   355篇
  2015年   432篇
  2014年   445篇
  2013年   432篇
  2012年   220篇
  2011年   222篇
  2010年   338篇
  2009年   532篇
  2008年   223篇
  2007年   182篇
  2006年   179篇
  2005年   141篇
  2004年   131篇
  2003年   185篇
  2002年   141篇
  2001年   181篇
  2000年   157篇
  1999年   169篇
  1998年   232篇
  1997年   203篇
  1996年   196篇
  1995年   176篇
  1994年   169篇
  1993年   126篇
  1992年   139篇
  1991年   85篇
  1990年   92篇
  1989年   55篇
  1988年   84篇
  1987年   78篇
  1986年   37篇
  1985年   60篇
  1984年   59篇
  1983年   57篇
  1982年   51篇
  1981年   32篇
  1978年   11篇
  1977年   10篇
  1976年   11篇
  1975年   15篇
  1974年   12篇
  1973年   8篇
  1972年   11篇
排序方式: 共有7747条查询结果,搜索用时 20 毫秒
71.
72.
73.
During the treatment of patients with renal failure or renal transplants the most important consideration is to eliminate sources of infection before and after the treatment. Acute or chronic oral infections or bacteraemias resulting from dental procedures may cause serious complications in these patients who already have lowered host resistance caused by immunosuppressant therapy. In order to determine the latest concepts from some international transplantation centres relating to the importance of and the effect of infective sources in the oral cavity, a survey form was prepared which included several questions related to oral foci of infection and renal transplantations.
Results obtained from 22 centres from 12 countries indicated that the majority of the centres included a dental examination in their routine protocol and required completion of any necessary dental treatment before transplantation. However, full agreement among all these centres on the necessity for dental examination as part of the protocol has not yet been reached.  相似文献   
74.
75.
A patient with Type I hypoplastic patterned amelogenesis imperfecta, subtype D, presented for prosthodontic evaluation. This article describes the developmental and pathophysiological background of this disease. A clinical report describing the diagnosis, treatment planning, and dental rehabilitation of the patient is reviewed.  相似文献   
76.
Most cases with recurrent parotitis in childhood (RPC) can be cured before puberty.1–3 A few of them, however, may continue to adulthood.1–4 To distinguish this condition from other types of chronic parotitis in adults, such as chronic obstructive parotitis,5 we suggest that the diagnosis of recurrent parotitis in adults (RPA) be reserved for the cases derived from RPC.6 The pathophysiology and development of RPA is still not well known. To our knowledge, there are few reports of RPA in the literature, especially concerning its histopathology. This report describes a cases of RPA studied with sialography and light and electron microscopy.  相似文献   
77.
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   
78.
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   
79.
80.
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