全文获取类型
收费全文 | 408篇 |
免费 | 34篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 44篇 |
妇产科学 | 25篇 |
基础医学 | 32篇 |
口腔科学 | 2篇 |
临床医学 | 26篇 |
内科学 | 47篇 |
皮肤病学 | 3篇 |
神经病学 | 47篇 |
特种医学 | 4篇 |
外科学 | 67篇 |
综合类 | 8篇 |
预防医学 | 104篇 |
眼科学 | 2篇 |
药学 | 25篇 |
肿瘤学 | 5篇 |
出版年
2023年 | 4篇 |
2022年 | 5篇 |
2021年 | 16篇 |
2020年 | 8篇 |
2019年 | 6篇 |
2018年 | 8篇 |
2017年 | 10篇 |
2016年 | 13篇 |
2015年 | 20篇 |
2014年 | 12篇 |
2013年 | 22篇 |
2012年 | 34篇 |
2011年 | 37篇 |
2010年 | 17篇 |
2009年 | 25篇 |
2008年 | 29篇 |
2007年 | 19篇 |
2006年 | 19篇 |
2005年 | 16篇 |
2004年 | 19篇 |
2003年 | 17篇 |
2002年 | 14篇 |
2001年 | 7篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 3篇 |
1997年 | 6篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 4篇 |
1985年 | 4篇 |
1984年 | 3篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1973年 | 4篇 |
1972年 | 3篇 |
1971年 | 4篇 |
1970年 | 1篇 |
1968年 | 1篇 |
1967年 | 2篇 |
1946年 | 2篇 |
1944年 | 1篇 |
排序方式: 共有443条查询结果,搜索用时 15 毫秒
51.
D. Ryan F. McGregor M. Akermanis K. Southwell M. Ramke G. Woodyatt 《Disability and rehabilitation》2004,26(21):1268-1277
Purpose: To investigate the effect of cueing on communicative responses of children with multiple disabilities in an educational setting. It was hypothesized that differences would exist in teacher interactional styles and the use of orienting cues would increase the communicative responses of the participants. Method: A naturalistic observation research method was employed in order to examine the interaction of three student - teacher dyads in three special schools. Three different activity types were videotaped from which interactions were coded and analysed. Results: Multi-modal cueing facilitated communicative responses of children with Rett syndrome. However, increased communication opportunities provided by caregivers did not elicit increased responses from the girls. Conclusion: There is a difference in cueing by teachers in their interactions with children with multiple disabilities. Also, more frequent communicative interactions did not necessarily lead to increased student responses. It is suggested that amount and type of cueing may need to be considered to be effective in generating student responses. The small number of participants, however, means findings should be viewed cautiously and that more research is indicated. 相似文献
52.
53.
54.
55.
56.
57.
Mond J Hay P Rodgers B Owen C Crosby R Mitchell J 《The International journal of eating disorders》2006,39(4):294-302
OBJECTIVE AND METHOD: To inform the classification of bulimic-type eating disorders not meeting formal diagnostic criteria for bulimia nervosa (BN), levels of eating disorder psychopathology and functional impairment associated with subjective and objective bulimic episodes (SBEs and OBEs) and purging and nonpurging methods of weight control were examined in a large community-based sample of women (n = 5,232). RESULTS: Participants who reported recurrent bulimic episodes had significantly higher levels of eating disorder psychopathology and functional impairment than those who did not and this was the case whether the episodes were objective or subjective. Similarly, participants who reported the use of extreme weight control behaviors had higher levels of eating disorder psychopathology and functional impairment than those who did not, and this was the case whether purging or nonpurging behaviors were employed. The combination of bulimic episodes and extreme weight control behaviors was associated with particularly high levels of eating disorder psychopathology and functional impairment. CONCLUSION: The combination of bulimic episodes, objective or subjective, and extreme weight control behaviors, purging or nonpurging, is significant in terms of impairment in psychosocial functioning among individuals affected by eating disorders not meeting formal diagnostic criteria for BN. The combination of SBEs and extreme weight control behaviors, in particular, warrants further investigation. 相似文献
58.
Bartha JL Ling Y Kyle P Soothill PW 《European journal of obstetrics, gynecology, and reproductive biology》2005,119(1):56-59
OBJECTIVES: To evaluate the clinical consequences of size discordance in the first-trimester of pregnancy in twins. STUDY DESIGN: This study was performed in a university tertiary referral centre. Nineteen pairs of twins identified as discordant were compared with 41 concordant twins. The rates of intrauterine growth restriction (IUGR), congenital malformations, and growth discordance in late pregnancy and at delivery were compared using chi-squared test and Fisher's exact test. RESULTS: There was not a significant difference in the rate of congenital malformations between the studied groups. The rates of IUGR and fetal growth discordance in late pregnancy were significantly higher in the first-trimester discordant group (57.2 and 35.7%, respectively) than in the control group (24.4 and 7.3%; P = 0.03 and 0.02, respectively). CONCLUSIONS: First-trimester growth discordant twins have an increased risk of IUGR and growth discordance in late pregnancy, and therefore they are a high-risk subgroup among multiple pregnancies. 相似文献
59.
Malpas P 《The New Zealand medical journal》2005,118(1220):U1611
Within the field of medicine, it has become widely accepted that respecting the autonomy of individuals justifies their right to know. More recently, commentators have asked whether such respect also justifies an individual's right not to know; that is, their right to remain in ignorance. In this paper, I examine what the concept of autonomy entails and whether one is justified in exercising a right not to know genetic information about oneself in the name of autonomy. An important distinction is drawn between autonomous choices generally and autonomous choices about how we shall conduct our lives. Against this theoretical discussion, I consider two hypothetical cases. I conclude by claiming that ignorance cannot be justified in the name of autonomy, and furthermore that where genetic information is pertinent to one's future autonomy, one cannot exercise a right not to know. 相似文献
60.
Fitzpatrick LA Smith PL McBride TA Fries MA Hossain M Dabrowski CE Gordon DN 《BONE》2011,49(4):845-852