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   3127篇
  免费   201篇
  国内免费   19篇
耳鼻咽喉   20篇
儿科学   114篇
妇产科学   48篇
基础医学   335篇
口腔科学   9篇
临床医学   431篇
内科学   526篇
皮肤病学   14篇
神经病学   307篇
特种医学   27篇
外科学   326篇
综合类   330篇
一般理论   4篇
预防医学   431篇
眼科学   52篇
药学   165篇
中国医学   1篇
肿瘤学   207篇
  2024年   4篇
  2023年   25篇
  2022年   37篇
  2021年   86篇
  2020年   58篇
  2019年   99篇
  2018年   110篇
  2017年   69篇
  2016年   99篇
  2015年   75篇
  2014年   96篇
  2013年   142篇
  2012年   283篇
  2011年   313篇
  2010年   142篇
  2009年   113篇
  2008年   217篇
  2007年   247篇
  2006年   242篇
  2005年   224篇
  2004年   129篇
  2003年   127篇
  2002年   132篇
  2001年   15篇
  2000年   16篇
  1999年   14篇
  1998年   26篇
  1997年   7篇
  1996年   14篇
  1995年   14篇
  1994年   12篇
  1993年   14篇
  1992年   11篇
  1991年   7篇
  1990年   6篇
  1988年   4篇
  1987年   10篇
  1986年   5篇
  1984年   11篇
  1983年   8篇
  1982年   9篇
  1981年   10篇
  1980年   9篇
  1978年   6篇
  1975年   4篇
  1974年   8篇
  1973年   4篇
  1971年   3篇
  1970年   5篇
  1968年   6篇
排序方式: 共有3347条查询结果,搜索用时 15 毫秒
161.
Genes help unravel Marfan pathology, point way to potential new therapies   总被引:1,自引:0,他引:1  
Kuehn BM 《JAMA》2005,294(14):1745-1746
  相似文献   
162.
163.
164.
165.
166.
167.
168.
This article examines the performance of the AUDIT-C, as embedded in a large national survey, as a screener for alcohol use disorders (AUDs) and risk drinking among individuals with past-year psychopathology. The analysis is based on data collected in personal interviews from a representative population sample of US adults. The study population consisted of past-year drinkers with any past-year mood disorder (n = 2818), any past-year anxiety disorder (n = 3173), or any personality disorder (n = 4389). Screening performance was evaluated by means of sensitivity, specificity, and areas under receiver operating characteristic curves (AUCs). The AUCs for the AUDIT-C were from 0.888 to 0.893 for alcohol dependence, from 0.864 to 0.876 for any AUD, and from 0.941 to 0.951 for any AUD or risk drinking-all on a par with those observed in the general population. Among men, cut points of either > or =5 or > or =6 points (the former favoring sensitivity and the latter favoring specificity) were optimal for detecting dependence, and cut points of > or =5 points were optimal for any AUD and for any AUD or risk drinking. Among women, a cut point of > or =4 points was optimal for the outcomes of both alcohol dependence and any AUD, whereas a cut point of > or =3 points was preferable for detecting any AUD or risk drinking.  相似文献   
169.
This study examined the effects of manipulating establishing operations on the frequency of initiations of three children with autism toward peers with autism. The EO targeted was deprivation of preferred edibles, and the target initiation was a mand for the preferred snack. A reversal design was used to assess the effects of the EO conditions on frequency of initiations. Results indicated that when the EO was absent, no spontaneous initiations toward the peer occurred. Two participants required training sessions with an adult to transfer initiations toward peers. Once the EO had been established and was present, the participants initiated mands for the snack. Results are discussed in terms of implications for the use of establishing operations in language training for children with autism.  相似文献   
170.
OBJECTIVE: The aim of this study was to describe the advice that patients with acute infectious mononucleosis recall having been given by their general practitioner (GP; family or primary care doctor). METHODS: Individuals with a recent diagnosis of infectious mononucleosis were recruited for a randomised controlled trial assessing the effectiveness of a brief educational intervention on recovery. All participants were asked at their initial assessment what advice that they had been given by their GP. They were not given any prompts and were free to give several responses. Responses were grouped into various themes. RESULTS: Seventy-one patients took part. Of these, 11 (15%) recalled being given no specific advice. Of the remaining 60 participants, 70% recalled being given advice to rest, or to "take it easy", usually without any qualification; 10% recalled being given dietary advice, and 17% advice on simple symptom management. CONCLUSION: The majority of individuals with recent onset infectious mononucleosis recall being given advice to rest by their GPs. This finding is discussed in relation to evidence suggesting that rest may be unhelpful.  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