全文获取类型
收费全文 | 2283657篇 |
免费 | 170416篇 |
国内免费 | 3350篇 |
专业分类
耳鼻咽喉 | 31601篇 |
儿科学 | 75599篇 |
妇产科学 | 65743篇 |
基础医学 | 336464篇 |
口腔科学 | 64488篇 |
临床医学 | 205120篇 |
内科学 | 443830篇 |
皮肤病学 | 48477篇 |
神经病学 | 181374篇 |
特种医学 | 87193篇 |
外国民族医学 | 602篇 |
外科学 | 338892篇 |
综合类 | 48159篇 |
现状与发展 | 4篇 |
一般理论 | 823篇 |
预防医学 | 179953篇 |
眼科学 | 52253篇 |
药学 | 171288篇 |
7篇 | |
中国医学 | 4091篇 |
肿瘤学 | 121462篇 |
出版年
2018年 | 22768篇 |
2016年 | 19167篇 |
2015年 | 22253篇 |
2014年 | 30742篇 |
2013年 | 46968篇 |
2012年 | 64205篇 |
2011年 | 68638篇 |
2010年 | 40127篇 |
2009年 | 38300篇 |
2008年 | 65545篇 |
2007年 | 70559篇 |
2006年 | 70893篇 |
2005年 | 69484篇 |
2004年 | 66879篇 |
2003年 | 64296篇 |
2002年 | 63014篇 |
2001年 | 100038篇 |
2000年 | 102473篇 |
1999年 | 86849篇 |
1998年 | 24988篇 |
1997年 | 22428篇 |
1996年 | 22884篇 |
1995年 | 21716篇 |
1994年 | 20464篇 |
1993年 | 18965篇 |
1992年 | 69972篇 |
1991年 | 69013篇 |
1990年 | 67727篇 |
1989年 | 65637篇 |
1988年 | 61145篇 |
1987年 | 60037篇 |
1986年 | 57273篇 |
1985年 | 54515篇 |
1984年 | 41094篇 |
1983年 | 35788篇 |
1982年 | 21433篇 |
1981年 | 19292篇 |
1979年 | 39436篇 |
1978年 | 28320篇 |
1977年 | 24059篇 |
1976年 | 22552篇 |
1975年 | 24586篇 |
1974年 | 29432篇 |
1973年 | 28656篇 |
1972年 | 27207篇 |
1971年 | 25358篇 |
1970年 | 23761篇 |
1969年 | 22707篇 |
1968年 | 21280篇 |
1967年 | 18951篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
41.
42.
Nicholas E. Anton Tomoko Mizota Lava R. Timsina Jake A. Whiteside Erinn M. Myers Dimitrios Stefanidis 《American journal of surgery》2019,217(2):266-271
Introduction
Several studies demonstrated that simulator-acquired skill transfer to the operating room is incomplete. Our objective was to identify trainee characteristics that predict the transfer of simulator-acquired skill to the operating room.Methods
Trainees completed baseline assessments including intracorporeal suturing (IS) performance, attentional selectivity, self-reported use of mental skills, and self-reported prior clinical and simulated laparoscopic experience and confidence. Residents then followed proficiency-based laparoscopic skills training, and their skill transfer was assessed on a live-anesthetized porcine model. Predictive characteristics for transfer test performance were assessed using multiple linear regression.Results
Thirty-eight residents completed the study. Automaticity, attentional selectivity, resident perceived ability with laparoscopy and simulators, and post-training IS performance were predictive of IS performance during the transfer test.Conclusions
Promoting automaticity, self-efficacy, and attention selectivity may help improve the transfer of simulator-acquired skill. Mental skills training and training to automaticity may therefore be valuable interventions to achieve this goal. 相似文献43.
44.
45.
46.
47.
48.
49.
Monique G. Kumar M.Phil. M.D. Heather Ciliberto M.D. Susan J. Bayliss M.D. 《Pediatric dermatology》2015,32(2):198-200
Pediatric trachyonychia is an acquired nail disease that can cause distress to families. It is a poorly understood disease, and long‐term follow‐up data are lacking. We present an institutional review of 11 children with isolated pediatric trachyonychia followed over time. Children with the diagnosis of pediatric trachyonychia were identified and invited to participate. Pictures were taken on follow‐up and a questionnaire was answered. Exclusion criteria include having another diagnosis at the initial visit that causes nail dystrophy. Eleven patients with the diagnosis of pediatric trachyonychia were available for follow‐up. The mean age of appearance was 2.7 years (range 2–7 yrs) and the average follow‐up was 66 months (range 10–126 mos). Nine patients were treated with potent topical corticosteroids, one used only petrolatum, and one took vitamin supplements. One patient was found to have an additional skin and hair diagnosis of alopecia areata on follow‐up. On follow‐up, 82% noted improvement of the nails, whereas 18% noted no change. A majority of cases of pediatric trachyonychia are isolated and improve with time, regardless of treatment. 相似文献
50.