全文获取类型
收费全文 | 1888篇 |
免费 | 214篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 11篇 |
儿科学 | 78篇 |
妇产科学 | 78篇 |
基础医学 | 236篇 |
口腔科学 | 36篇 |
临床医学 | 201篇 |
内科学 | 358篇 |
皮肤病学 | 106篇 |
神经病学 | 154篇 |
特种医学 | 150篇 |
外科学 | 158篇 |
综合类 | 89篇 |
预防医学 | 149篇 |
眼科学 | 47篇 |
药学 | 151篇 |
中国医学 | 3篇 |
肿瘤学 | 113篇 |
出版年
2021年 | 24篇 |
2020年 | 33篇 |
2019年 | 29篇 |
2018年 | 38篇 |
2017年 | 34篇 |
2016年 | 37篇 |
2015年 | 45篇 |
2014年 | 58篇 |
2013年 | 60篇 |
2012年 | 70篇 |
2011年 | 80篇 |
2010年 | 69篇 |
2009年 | 57篇 |
2008年 | 68篇 |
2007年 | 88篇 |
2006年 | 61篇 |
2005年 | 57篇 |
2004年 | 43篇 |
2003年 | 55篇 |
2002年 | 49篇 |
2001年 | 47篇 |
2000年 | 49篇 |
1999年 | 47篇 |
1998年 | 58篇 |
1997年 | 47篇 |
1996年 | 51篇 |
1995年 | 36篇 |
1994年 | 46篇 |
1993年 | 37篇 |
1992年 | 33篇 |
1991年 | 34篇 |
1990年 | 23篇 |
1989年 | 42篇 |
1988年 | 30篇 |
1987年 | 31篇 |
1986年 | 23篇 |
1985年 | 23篇 |
1984年 | 18篇 |
1983年 | 24篇 |
1982年 | 21篇 |
1981年 | 19篇 |
1980年 | 28篇 |
1979年 | 21篇 |
1978年 | 20篇 |
1977年 | 30篇 |
1976年 | 20篇 |
1973年 | 16篇 |
1972年 | 20篇 |
1970年 | 17篇 |
1969年 | 19篇 |
排序方式: 共有2118条查询结果,搜索用时 31 毫秒
1.
Stereoscopic evoked responses to crossed and uncrossed disparity accompanying simulated refractive error.
下载免费PDF全文
![点击此处可从《The British journal of ophthalmology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
R A Neill P Dunlop D B Dunlop B Fenelon C Dunlop 《The British journal of ophthalmology》1988,72(10):759-763
Evoked potentials were recorded to the occurrence of a disparate stimulus in dynamic random dot stereograms. Seven adult males, all of whom had vision which was normal or corrected to normal, participated in the experiment. Subjects viewed 100 ms duration stimuli which embodied 30 arc min of either crossed or uncrossed disparity under four conditions of spherical overcorrection: -0.25, +1.0, +2.0, +3.0 dioptres. The first condition, essentially normal refraction, yielded reliable behavioural reports of the stimulus and clear evoked potentials to both crossed and uncrossed disparity. With increasing overcorrection the behavioural reports became less reliable, and the evoked potentials were degraded for both conditions of disparity. The responses to the crossed disparity condition, however, showed significantly less degradation in both behavioural and electrophysiological measures. The implications of this finding may be that there are separate cortical subsystems for the processing of crossed and uncrossed disparity and that the former is more robust under non-ideal viewing conditions. 相似文献
2.
Suppurative corneal ulceration in Bangladesh 总被引:8,自引:0,他引:8
AAS Dunlop MB BS ED Wright MRCPath † SA Howlader‡ I Nazrul‡ R Husain‡ K McClellan FRACO § FA Billson FRACO § 《Clinical & experimental ophthalmology》1994,22(2):105-110
Suppurative keratitis is an important preventable cause of blindness, particularly in the developing world. This study analyses 142 cases of suppurative keratitis referred to Chittagong Eye Infirmary, Bangladesh. Some 53.5% of cases were bacterial and 35.9% were fungal. The five most common pathogens were: Pseudomonas sp. 24%, Streptococcus pneumoniae 17%, Aspergillus sp. 13%, Fusarium sp. 7% and Curvularia sp. 6%. Gram stain and culture results were consistent in 62.6% of cases. Previous antibiotic treatment was a significant factor for failure of culture isolation and less so for Gram stain failure. On Gram stain, 55.9% of pseudomonal cases were missed, but only 2% of fungal cases were missed. Over all, Gram stain had a sensitivity of 62% and positive predictive value of 84% for bacterial cases, and 98% and 94% for fungal cases, respectively. Fungal ulcers were typically filamentous, but an antecedent history of trauma was not common. The most frequent injury was due to rice grains, but the inoculum appeared to be introduced during eye washing with contaminated water. Pseudomonal ulcers occurred most frequently in the monsoon season, and Fusarium cases were seen only in the hot, dry season. 相似文献
3.
4.
5.
J M Dunlop 《Journal of obstetrics and gynaecology》2004,24(4):341-342
Crematoria are occasionally asked to cremate non-viable fetuses. Many doctors, especially those associated with crematoria, believe that there will be no cremated residue. However, if the cremation technique is modified, cremated remains are produced. These remains can form a focal point for the parent's grief. Crematoria are urged to ensure their technique yields a residue. 相似文献
6.
7.
GP SCHWAB AL BLUM E BODNER B DALLEMAGNE K GLASER H KOOP F PACE W RÖSCH JR SIEWERT G WETSCHER 《Journal of gastroenterology and hepatology》1997,12(12):785-789
Gastroesophageal reflux disease (GERD) is the most common disease of the upper gastrointestinal tract. With the introduction of proton pump inhibitors medical treatment of GERD has been significantly improved. However, the development of laparoscopic antireflux surgery resulted in an increasing interest of surgeons in this disease. An interactive meeting was organized in order to develop an agreement between gastoenterologists and surgeons regarding therapeutic decisions and this is the main topic of this paper. 相似文献
8.
9.
10.