全文获取类型
收费全文 | 669篇 |
免费 | 40篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 42篇 |
妇产科学 | 4篇 |
基础医学 | 82篇 |
口腔科学 | 9篇 |
临床医学 | 47篇 |
内科学 | 86篇 |
皮肤病学 | 13篇 |
神经病学 | 36篇 |
特种医学 | 56篇 |
外科学 | 80篇 |
综合类 | 32篇 |
预防医学 | 48篇 |
眼科学 | 1篇 |
药学 | 82篇 |
中国医学 | 4篇 |
肿瘤学 | 89篇 |
出版年
2022年 | 3篇 |
2021年 | 5篇 |
2020年 | 4篇 |
2019年 | 4篇 |
2018年 | 9篇 |
2017年 | 4篇 |
2016年 | 3篇 |
2015年 | 11篇 |
2014年 | 12篇 |
2013年 | 21篇 |
2012年 | 26篇 |
2011年 | 24篇 |
2010年 | 19篇 |
2009年 | 33篇 |
2008年 | 22篇 |
2007年 | 25篇 |
2006年 | 28篇 |
2005年 | 22篇 |
2004年 | 37篇 |
2003年 | 16篇 |
2002年 | 10篇 |
2001年 | 15篇 |
2000年 | 14篇 |
1999年 | 9篇 |
1998年 | 27篇 |
1997年 | 20篇 |
1996年 | 15篇 |
1995年 | 10篇 |
1994年 | 13篇 |
1993年 | 12篇 |
1992年 | 24篇 |
1991年 | 18篇 |
1990年 | 21篇 |
1989年 | 23篇 |
1988年 | 11篇 |
1987年 | 9篇 |
1986年 | 14篇 |
1985年 | 15篇 |
1984年 | 15篇 |
1983年 | 6篇 |
1982年 | 13篇 |
1981年 | 9篇 |
1980年 | 9篇 |
1979年 | 5篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 5篇 |
1975年 | 4篇 |
1970年 | 3篇 |
1967年 | 5篇 |
排序方式: 共有713条查询结果,搜索用时 0 毫秒
1.
2.
3.
The phosphorylation patterns of isolated red blood cell (RBC) membranes labeled with [ γ-32p]ATP are altered by Zn++ ions. Zn++ ions caused an increased phosphate incorporation into a 72 KDa protein and several proteins in the 40–60 KDa region and a decrease in the labeling of a 53 KDa protein. The 72 KDa and 53 KDa proteins have been identified as protein 4.2 and a protease-cleaved fragment of protein 3, respectively. Evidence suggests that the changes in phosphorylation pattern may be due to the stimulation of endogenous membrane alkaline phosphatase(s). Our results suggest that Zn++, at physiological concentrations in the intact erythrocyte, could modulate the phosphorylation of selected proteins which may regulate their association in the cytoskeletal network. 相似文献
4.
Terry?O?Herndon Salvador?Gonzalez TR?Gowrishankar R?Rox?Anderson James?C?WeaverEmail author 《BMC medicine》2004,2(1):12
Background
Painless, rapid, controlled, minimally invasive molecular transport across human skin for drug delivery and analyte acquisition is of widespread interest. Creation of microconduits through the stratum corneum and epidermis is achieved by stochastic scissioning events localized to typically 250 μm diameter areas of human skin in vivo. 相似文献5.
6.
Eighty four out of 2151 militancy trauma patients sustained severe maxillofacial injury from Jan 1990 to March 1993. The resuscitation, stabilisation and intensive care of these patients was based on management priorities of primary resuscitation, care of airway, management of haemodynamics, oxygenation and monitoring. Anaesthesia was administered in a situation when the airway was likely to be compromised and the patients were critically sick. Initial ventilation and oxygenation was the most difficult and could be achieved with satisfactory seal around the face mask by applying water-soaked guaze pieces around the mouth and nose to “fill-in” the defects. Tracheal intubation could be accomplished with intravenous sedation by an experienced anaesthesiologist. Dental occlusion and wiring necessiated the placement of nasotracheal tube for 48-72 hours after surgery.KEY WORDS: Trauma, Maxillofacial injury, Trauma anesthesia, Anaesthesia and critical care 相似文献
7.
Gamm LD Kassab CD Brannon SD Fennell ML 《Hospital & health services administration》1996,41(2):236-254
Strategies associated with ownership or management of a range of health service facilities, service sharing, and other coordination activities are important to the viability of many rural hospitals. This article articulates a set of linkage strategies employed by rural hospitals. Such strategies and their environmental and organizational correlates are assessed in a sample of 46 rural Pennsylvania hospitals. 相似文献
8.
OBJECTIVE: Because survival from admission to discharge does not provide parents and physicians information about future life expectancy in the premature neonate, we characterized the actuarial survival, defined as the future life expectancy from a given postnatal age, in a large inborn population of premature infants < 30 weeks' gestation. STUDY DESIGN: We determined daily actuarial survival of 1925 inborn infants (23 to 29 weeks' gestation) admitted to the Baylor Affiliated Nurseries from July 1986 through December 1994, stratified by 100-g birth weight and by 1-week gestational-age intervals. RESULTS: In the 501- to 600-g birth weight stratum, actuarial survival improved from 31% at birth, to 61% on day of life 7, and then to 75% on day of life 28; in the 901- to 1000-g birth weight stratum, actuarial survival improved from 88%, to 94%, and then to 98% throughout the same times, respectively. Similar trends were obtained when data were stratified by gestational age. CONCLUSIONS: Survival in the smallest infants improves dramatically during the first few days of life, but there is a significant risk for late death in the smallest of these infants. 相似文献
9.
Gonzales AJ; Christensen JG; Preston RJ; Goldsworthy TL; Tlsty TD; Fox TR 《Carcinogenesis》1998,19(7):1173-1183
10.