全文获取类型
收费全文 | 536篇 |
免费 | 42篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 17篇 |
妇产科学 | 7篇 |
基础医学 | 43篇 |
口腔科学 | 24篇 |
临床医学 | 73篇 |
内科学 | 123篇 |
皮肤病学 | 18篇 |
神经病学 | 8篇 |
特种医学 | 72篇 |
外科学 | 66篇 |
综合类 | 6篇 |
预防医学 | 76篇 |
眼科学 | 4篇 |
药学 | 11篇 |
肿瘤学 | 33篇 |
出版年
2023年 | 2篇 |
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 4篇 |
2018年 | 14篇 |
2017年 | 7篇 |
2016年 | 12篇 |
2015年 | 14篇 |
2014年 | 23篇 |
2013年 | 25篇 |
2012年 | 13篇 |
2011年 | 18篇 |
2010年 | 26篇 |
2009年 | 13篇 |
2008年 | 16篇 |
2007年 | 22篇 |
2006年 | 21篇 |
2005年 | 23篇 |
2004年 | 18篇 |
2003年 | 11篇 |
2002年 | 12篇 |
2001年 | 8篇 |
2000年 | 17篇 |
1999年 | 15篇 |
1998年 | 22篇 |
1997年 | 21篇 |
1996年 | 19篇 |
1995年 | 12篇 |
1994年 | 11篇 |
1993年 | 10篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 7篇 |
1989年 | 20篇 |
1988年 | 10篇 |
1987年 | 6篇 |
1986年 | 10篇 |
1985年 | 9篇 |
1984年 | 7篇 |
1983年 | 7篇 |
1982年 | 6篇 |
1981年 | 10篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1976年 | 5篇 |
1975年 | 4篇 |
1894年 | 1篇 |
1893年 | 1篇 |
排序方式: 共有582条查询结果,搜索用时 31 毫秒
101.
血小板冷藏会使血管假性血友病因子受体复合物(von Willebrand factor receptor complex)聚集成簇。巨噬细胞αMβ2 整合素结合在成簇复合物的GPIbα亚基,导致输注的冷藏血小板被快速清除。因此输注用血小板不能冷藏,但现在的室温保存方式也存在很大缺点。我们已证明αMβ2是一种凝集素,它能识别GPIbα的N-连接葡聚糖上暴露的β-N-乙酰葡萄胺。冷藏血小板的酶促半乳糖苷化阻止了αMβ2的这种识别,延长了有 相似文献
102.
103.
Mulder AA Boerma RP Barogui Y Zinsou C Johnson RC Gbovi J van der Werf TS Stienstra Y 《Transactions of the Royal Society of Tropical Medicine and Hygiene》2008,102(9):912-920
Buruli ulcer is a devastating condition emerging in West Africa. We investigated why patients often report late to the hospital. Health seeking behaviour determinants and stigma were studied by in-depth interviews in patients treated in hospital (n=107), patients treated traditionally (n=46) of whom 22 had active disease, and healthy community control subjects (n=107). We developed a model capturing internal and external factors affecting decision making. With increasing severity, extent and duration of Buruli ulcer, a shift of influencing factors on health seeking behaviour appears to occur. Factors causing delay in presenting to hospital were the use of traditional medicine before presenting at the treatment centre; costs and duration of admission; disease considered not serious enough; witchcraft perceived as the cause of disease; and fear of treatment, which patients expected to be amputation. This study confirms the importance of self-treatment and traditional healing in this area. Our study was performed before antimicrobial treatment was introduced in Benin; we suggest that this model and the results from this analysis should be used as a baseline from which to measure the influence of the introduction of antimicrobial treatment on health seeking behaviour for Buruli ulcer in Benin. 相似文献
104.
105.
Background
Weight gains in pregnancy within the recommended guidelines are associated with healthy fetal and maternal outcomes; higher weight gains are associated with fetal macrosomia. This study was a systemic review of randomized controlled trials on the effect of aerobic training on maternal weight in pregnancy.Methods
The study data source was publications through May 2012 in the MEDLINE (PubMed) database. The citation lists of randomized controlled trials on the effect of aerobic training and maternal weight were extracted. Data on participants'' characteristics, study quality, population, intervention, treatment outcome (maternal weight gain) were collected and analyzed.Results
There were 11 randomized controlled studies using body weight (kg) as measure of treatment outcome. A total of 1177 subjects were recruited in the 11 studies. The mean± SD weight gain (kg) for the exercise (11.31± 7.44kg) and control (14.42± 6.60kg) groups; Meta-analysis result indicated significant effect of aerobic training on maternal weight (t= -7.580, p= .000) at p< 0.05.Conclusion
It was concluded that aerobic training is an effective tool in maternal weight gain control in pregnancy. More randomized controlled trials are warranted. 相似文献106.
Cost‐effectiveness of same‐admission versus interval cholecystectomy after mild gallstone pancreatitis in the PONCHO trial
下载免费PDF全文
![点击此处可从《The British journal of surgery》网站下载免费的PDF全文](/ch/ext_images/free.gif)
107.
108.
A pilot study of a rapid assessment method to identify places for AIDS prevention in Cape Town,South Africa
下载免费PDF全文
![点击此处可从《Sexually transmitted infections》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Weir SS Morroni C Coetzee N Spencer J Boerma JT 《Sexually transmitted infections》2002,78(Z1):i106-i113
A multidisciplinary approach appears promising for focusing interventions. The PLACE method (priorities for local AIDS control efforts) identifies where prevention programmes can access sexual networks containing individuals with high rates of new partner acquisition and provides information about whether sexually transmitted disease (STD) or AIDS prevention programmes are in place at those sites. The method provides useful information at relatively low cost, regardless of the phase of the HIV or STD epidemic. For example, in the growth phase of an epidemic, information on where people with high rates of new partner acquisition meet new sexual partners could be used to inform targeted surveillance or screening programmes to catch early cases. 相似文献
109.
110.
van Beest PA van Ingen J Boerma EC Holman ND Groen H Koopmans M Spronk PE Kuiper MA 《Critical care (London, England)》2010,14(6):R219