全文获取类型
收费全文 | 1288篇 |
免费 | 79篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 71篇 |
妇产科学 | 12篇 |
基础医学 | 146篇 |
口腔科学 | 60篇 |
临床医学 | 78篇 |
内科学 | 226篇 |
皮肤病学 | 13篇 |
神经病学 | 109篇 |
特种医学 | 119篇 |
外国民族医学 | 2篇 |
外科学 | 152篇 |
综合类 | 62篇 |
预防医学 | 40篇 |
眼科学 | 78篇 |
药学 | 92篇 |
中国医学 | 1篇 |
肿瘤学 | 106篇 |
出版年
2022年 | 18篇 |
2021年 | 21篇 |
2020年 | 16篇 |
2019年 | 21篇 |
2018年 | 25篇 |
2017年 | 18篇 |
2016年 | 29篇 |
2015年 | 37篇 |
2014年 | 31篇 |
2013年 | 43篇 |
2012年 | 52篇 |
2011年 | 65篇 |
2010年 | 43篇 |
2009年 | 35篇 |
2008年 | 61篇 |
2007年 | 59篇 |
2006年 | 59篇 |
2005年 | 58篇 |
2004年 | 43篇 |
2003年 | 37篇 |
2002年 | 56篇 |
2001年 | 56篇 |
2000年 | 39篇 |
1999年 | 43篇 |
1998年 | 41篇 |
1997年 | 32篇 |
1996年 | 22篇 |
1995年 | 28篇 |
1994年 | 24篇 |
1993年 | 11篇 |
1992年 | 18篇 |
1991年 | 10篇 |
1990年 | 10篇 |
1989年 | 28篇 |
1988年 | 19篇 |
1987年 | 27篇 |
1986年 | 18篇 |
1985年 | 16篇 |
1984年 | 7篇 |
1983年 | 8篇 |
1982年 | 9篇 |
1981年 | 10篇 |
1980年 | 9篇 |
1977年 | 4篇 |
1975年 | 8篇 |
1974年 | 4篇 |
1972年 | 5篇 |
1971年 | 9篇 |
1969年 | 4篇 |
1966年 | 8篇 |
排序方式: 共有1375条查询结果,搜索用时 15 毫秒
1.
Hanna Lee Mary K. Tan Andrew T. Yan Paul Angaran Paul Dorian Claudia Bucci Jean C. Gregoire Alan D. Bell Martin S. Green Peter L. Gross Allan Skanes Charles R. Kerr L. Brent Mitchell Jafna L. Cox Vidal Essebag Brett Heilbron Krishnan Ramanathan Carl Fournier Shaun G. Goodman 《The Canadian journal of cardiology》2019,35(2):160-168
Background
Physicians treating nonvalvular atrial fibrillation (AF) assess stroke and bleeding risks when deciding on anticoagulation. The agreement between empirical and physician-estimated risks is unclear. Furthermore, the association between patient and physician sex and anticoagulation decision-making is uncertain.Methods
We pooled data from 2 national primary care physician chart audit databases of patients with AF (Facilitating Review and Education to Optimize Stroke Prevention in Atrial Fibrillation and Coordinated National Network to Engage Physicians in the Care and Treatment of Patients with Atrial Fibrillation Chart Audit) with a combined 1035 physicians (133 female, 902 male) and 10,927 patients (4567 female and 6360 male).Results
Male physicians underestimated stroke risk in female patients and overestimated risk in male patients. Female physicians estimated stroke risk well in female patients but underestimated the risk in male patients. Risk of bleeding was underestimated in all. Despite differences in risk assessment by physician and patient sex, > 90% of patients received anticoagulation across all subgroups. There was modest agreement between physician estimated and calculated (ie, CHADS2 score) stroke risk: Kappa scores were 0.41 (0.35-0.47) for female physicians and 0.34 (0.32-0.36) for male physicians.Conclusions
Our study is the first to examine the association between patient and physician sex influences and stroke and bleeding risk estimation in AF. Although there were differences in agreement between physician estimated stroke risk and calculated CHADS2 scores, these differences were small and unlikely to affect clinical practice; further, despite any perceived differences in the accuracy of risk assessment by sex, most patients received anticoagulation. 相似文献2.
Zoï Kapoula Maria Pia Bucci Frederic Jurion Julie Ayoun Farzaneh Afkhami Dominique Brémond-Gignac 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2006,245(7):931-936
Aim There is a controversy as to whether dyslexic children present visuo-motor disabilities such as vergence and accommodative
problems assessed with orthoptic tests. The purpose of this study is to re-examine this issue in a large population of children.
Methods Extensive orthoptic evaluation was made in 57 dyslexic and 46 non-dyslexic (“normal”) age-matched children. Convergence and
divergence capacities were evaluated at two distances (30 cm and 400 cm).
Results Binocular vision measured with stereo-acuity tests was normal in dyslexics. In contrast, the near point of convergence was
significantly more remote in dyslexics; most importantly, divergence at both far and near distance was significantly more
reduced in dyslexics (median value 4 pD and 10 pD, respectively, at far and near) than in “normals” (median value 6 pD and
12 pD, at far and near).
Conclusion The existence of the divergence deficit at far distance indicates the presence of deficit of divergence per se, independently
from convergence and accommodation relaxation. This result is novel and corroborated by physiological studies indicating distinct
control of convergence and divergence, both at the cortical and subcortical premotor level. We conclude that vergence deficits
are frequently present in dyslexics, and that dyslexics should be re-educated; training should address distinctively convergence
and divergence subsystems. 相似文献
3.
4.
The purpose of this study is to show the spectrum of adjacent organ invasion and to make a brief review of hepatic alveolar hydatid disease (AHD), using CT and MR imaging. We retrospectively reviewed CT and MR images of three patients with various adjacent organ invasions surgically and histologically proven to be AHD. Local invasion to right kidney and adrenal, right hemidiaphragm and lung were detected in one patient, right adrenal in another patient and gall bladder, duodenum, gastric wall and pancreas invasion in the other. AHD may rarely extend to the gall bladder, stomach, duodenum, pancreas, right adrenal and kidney, diaphragm, pleura and lung. The extension of the disease outside the liver is usually encountered in patients with large, peripherally located masses in the advanced stage of the disease. 相似文献
5.
6.
7.
Z. Kapoula M. P. Bucci F. Lavigne-Tomps F. Zamfirescu 《Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale》1998,122(4):413-423
The saccadic system has been traditionally regarded as two-dimensional (horizontal, vertical) and basically conjugate in the
two eyes. However, saccades to disparate targets (e.g., targets in real three-dimensional space that are located in different
directions and at different distances) are naturally disconjugate. We report here that memory-guided saccades to a disparate
target flashed 1 s earlier become disconjugate following repeated trials. After 15 min of repetition, the disconjugacy persists
even when the target to be remembered is no longer disparate. This suggests fast memory-based learning. Learning, however,
fails to occur if, during the repetition trials, the memory delay is 2 s. These findings suggest that the saccadic system
has access to a 3D representation of targets and is gifted with 3D short-term memory and learning capacity.
Received: 7 July 1997 / Accepted: 25 May 1998 相似文献
8.
Kathryn K Bucci Carl J Possidente Kathleen A Talbot 《American journal of health-system pharmacy》2003,60(24):2601-2605
9.
10.
We tested the ability of normal subjects to make changes in the conjugacy of their saccades. Subjects dichoptically viewed a grid the size of which was 10% larger in one eye. The grids were centred onto a flat screen at 57 cm or 1 m from the subject. Horizontal saccades immediately became larger in the eye viewing the larger grid. For some subjects this disconjugacy persisted even under subsequent monocular viewing. Such persistent changes occurred mainly in the field where the required disconjugacy was divergent for centrifugal saccades, convergent for centripetal saccades. Vertical saccades also developed compensatory disconjugacy; its amplitude was smaller but less variable. To explain these results we propose a fast associative learning mechanism that pairs peripheral disparity with saccades and is capable of producing saccade disconjugacy even in the absence of disparity. For horizontal saccades a secondary conditioning of monocular depth cues by the disparity would also be involved. 相似文献