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   9730篇
  免费   617篇
  国内免费   214篇
耳鼻咽喉   1583篇
儿科学   241篇
妇产科学   136篇
基础医学   641篇
口腔科学   153篇
临床医学   1854篇
内科学   863篇
皮肤病学   86篇
神经病学   275篇
特种医学   1028篇
外科学   512篇
综合类   1029篇
现状与发展   2篇
一般理论   4篇
预防医学   1132篇
眼科学   86篇
药学   606篇
  9篇
中国医学   140篇
肿瘤学   181篇
  2024年   19篇
  2023年   127篇
  2022年   247篇
  2021年   459篇
  2020年   386篇
  2019年   390篇
  2018年   370篇
  2017年   338篇
  2016年   409篇
  2015年   363篇
  2014年   663篇
  2013年   738篇
  2012年   523篇
  2011年   517篇
  2010年   489篇
  2009年   479篇
  2008年   454篇
  2007年   482篇
  2006年   450篇
  2005年   337篇
  2004年   290篇
  2003年   265篇
  2002年   208篇
  2001年   214篇
  2000年   154篇
  1999年   152篇
  1998年   109篇
  1997年   108篇
  1996年   83篇
  1995年   67篇
  1994年   103篇
  1993年   54篇
  1992年   60篇
  1991年   37篇
  1990年   56篇
  1989年   37篇
  1988年   39篇
  1987年   26篇
  1986年   27篇
  1985年   42篇
  1984年   38篇
  1983年   25篇
  1982年   39篇
  1981年   17篇
  1980年   15篇
  1979年   14篇
  1978年   18篇
  1977年   6篇
  1976年   6篇
  1975年   6篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
The purpose of this study was to investigate the association between habitual snoring (HS), middle ear disease (MED), and speech problems in children with cleft palate. This cross-sectional study included children aged 2.0–7.9 years with non-syndromic cleft palate anomalies. Parents completed the Pediatric Sleep Questionnaire and a questionnaire about MED. Audiograms and speech assessment were also conducted. Ninety-five children were enrolled; 15.2% of families reported HS, 97.6% MED, and 17.1% speech problems. HS (37.5% vs 10.3%, P = 0.007) and early episodes of MED (92.3% vs 58.2%, P = 0.021) were more likely to be reported for children with isolated cleft palate when compared to those with cleft lip and palate. Children with cleft lip and palate had a higher frequency of MED with effusion compared to those with Robin sequence (86.4% vs 57.1%, P = 0.049). The odds ratio for HS in children with ≥1 episode of MED in the last year was 7.37 (95% confidence interval 1.55–35.15, P = 0.012). There was a trend for children with speech problems reported by parents to have HS (30.8% vs 11.5%, P= 0.076). Anatomical factors play a role in the frequency of upper airway symptoms in children with cleft palate. A recent history of at least one episode of MED was associated with an increased frequency of HS.  相似文献   
2.
3.
This study explored the relationship between active mediation, exposure to Daniel Tiger’s Neighborhood, and key indicators of preschoolers’ social and emotional development. One hundred and twenty-seven children aged 2–6 either watched or did not watch 10 episodes of Daniel Tiger’s Neighborhood over a two-week period. Results revealed that preschoolers who watched the program exhibited higher levels of empathy, self-efficacy, and emotion recognition when their regular TV-watching experiences are frequently accompanied by active mediation. This was especially true for younger preschoolers and preschoolers from low-income families. Implications for policy-makers, parents, producers of prosocial programming, and educators are discussed.  相似文献   
4.
ObjectivesTo review the evidence pertaining to the association between cow’s milk protein allergy and recurrent acute otitis media and otitis media with effusion.MethodsThe CENTRAL, Web of Science, EMBASE, MEDLINE, LILACS databases, and gray literature were searched.ResultsFour studies were included, identifying the prevalence rates: 0.2% of delayed speech due to chronic otitis media with effusion in 382 children with cow’s milk protein allergy, 10.7% of cow’s milk protein allergy in 242 children who underwent ENT procedures, 40% of cow’s milk protein allergy in 25 children with recurrent otitis media with effusion and higher tendency to otitis media in children with cow’s milk protein allergy of 186 children (1.5 + 0.6 vs. 0.4 + 0.1; p < 0.1).ConclusionConsidering the characteristics and methodological variations of the identified studies, it is not possible to state that there is reliable evidence of an association between cow’s milk protein allergy and otitis media.  相似文献   
5.
6.
7.
在现代传媒背景下,媒介素养水平高低直接影响着医药专业人才的培养质量和未来我国医药卫生事业发展。本文探讨国内外媒介素养教育开展情况,分析医药院校大学生媒介素养教育的必要性,提出了在医药院校加强媒介素养教育的新思路。  相似文献   
8.
《Surgery (Oxford)》2021,39(9):591-597
Infections of the ear, nose and throat are common. The majority of these infections are managed by the primary care physicians and they settle with conservative and medical management. However, a small group can progress to become troublesome and develop complications to the extent that they may require surgical intervention. Some of the infections can lead to life-threatening complications, therefore awareness and correct diagnosis along with appropriate management is paramount. Foreign bodies in the ear, nose and throat are commonly encountered. The location and type of foreign body can have an implication on the urgency of action and the possible complications. In this article the common ENT infections and foreign bodies and their management are discussed.  相似文献   
9.
10.
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