全文获取类型
收费全文 | 2287篇 |
免费 | 291篇 |
国内免费 | 23篇 |
专业分类
耳鼻咽喉 | 22篇 |
儿科学 | 78篇 |
妇产科学 | 29篇 |
基础医学 | 179篇 |
口腔科学 | 81篇 |
临床医学 | 484篇 |
内科学 | 550篇 |
皮肤病学 | 46篇 |
神经病学 | 99篇 |
特种医学 | 304篇 |
外科学 | 185篇 |
综合类 | 24篇 |
预防医学 | 328篇 |
眼科学 | 16篇 |
药学 | 61篇 |
肿瘤学 | 115篇 |
出版年
2023年 | 51篇 |
2022年 | 14篇 |
2021年 | 13篇 |
2020年 | 44篇 |
2019年 | 26篇 |
2018年 | 60篇 |
2017年 | 44篇 |
2016年 | 53篇 |
2015年 | 59篇 |
2014年 | 112篇 |
2013年 | 139篇 |
2012年 | 51篇 |
2011年 | 67篇 |
2010年 | 80篇 |
2009年 | 93篇 |
2008年 | 69篇 |
2007年 | 102篇 |
2006年 | 75篇 |
2005年 | 58篇 |
2004年 | 55篇 |
2003年 | 34篇 |
2002年 | 35篇 |
2001年 | 52篇 |
2000年 | 39篇 |
1999年 | 49篇 |
1998年 | 76篇 |
1997年 | 97篇 |
1996年 | 89篇 |
1995年 | 67篇 |
1994年 | 67篇 |
1993年 | 62篇 |
1992年 | 30篇 |
1991年 | 29篇 |
1990年 | 48篇 |
1989年 | 60篇 |
1988年 | 57篇 |
1987年 | 59篇 |
1986年 | 48篇 |
1985年 | 40篇 |
1984年 | 26篇 |
1983年 | 16篇 |
1982年 | 28篇 |
1981年 | 34篇 |
1980年 | 22篇 |
1978年 | 12篇 |
1977年 | 19篇 |
1976年 | 25篇 |
1975年 | 23篇 |
1974年 | 13篇 |
1967年 | 13篇 |
排序方式: 共有2601条查询结果,搜索用时 8 毫秒
991.
992.
993.
994.
Fourteen women with fibromyalgia described their pain experiences using words indicating a model of pain that presented pain as an aggressive physical deformation and a torture-like experience. Metaphorical expressions were used which was seen as a means for enabling the patients to disclose tacit knowledge. The pain experience was narrated as being steady and without any distinct bodily location. Only causes explaining the present aggravation of the pain and treatment leading to a temporary relief were related. 相似文献
995.
Jayne H Antony JD Pollard JG McLeod 《Journal of neurology, neurosurgery, and psychiatry》1981,44(12):1124-1128
Experimental allergic neuritis was induced in 30 rabbits with extract of bovine peripheral nerve in complete Freund's adjuvant. Of the 22 animals that completed the study, nine animals were plasmapheresed within two weeks of inoculation and 13 animals served as controls. The plasmapheresed animals developed a less severe form of EAN than the controls. Differences were apparent in clinical weakness, weight loss, degree of dispersion of the muscle action potential and histological changes. 相似文献
996.
Red cells moving in a stream of fluid can be arrested by means of a network of fibrin threads. Those cells which fold over a fibrin thread present to view a flat strap-like portion of membrane in which the strain can be easily observed and accurately measured both optically and by scanning electron microscopy. Preliminary results obtained by this method show elastic strains of nearly 300% and indicate that the stress required to produce these large strains is an order of magnitude greater than that reported by other methods. 相似文献
997.
998.
Red cells arrested by fine fibers and subjected to drag forces in a moving stream of fluid can be stressed beyond the point of rupture. The technique, which is basically an in vitro analogue of the microangiopathic hemolytic state, thus permits a study of red cell behavior over the entire range of stress that the membrane can withstand. Measurements made by this approach show an exponential relationship between the velocity of fluid flow and the resultant membrane deformation. Such exponential membrane deformation is consistent with the morphology of red cell fragments and appears to explain their mechanism of formation. 相似文献
999.
Typhlitis presenting as toxic cecitis 总被引:2,自引:0,他引:2
1000.