全文获取类型
收费全文 | 252篇 |
免费 | 13篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 14篇 |
妇产科学 | 9篇 |
基础医学 | 28篇 |
口腔科学 | 6篇 |
临床医学 | 17篇 |
内科学 | 37篇 |
皮肤病学 | 7篇 |
神经病学 | 16篇 |
特种医学 | 72篇 |
外科学 | 16篇 |
综合类 | 9篇 |
预防医学 | 13篇 |
药学 | 8篇 |
中国医学 | 2篇 |
肿瘤学 | 10篇 |
出版年
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 2篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 1篇 |
2014年 | 3篇 |
2013年 | 12篇 |
2012年 | 7篇 |
2011年 | 2篇 |
2010年 | 15篇 |
2009年 | 15篇 |
2008年 | 3篇 |
2007年 | 5篇 |
2006年 | 12篇 |
2005年 | 5篇 |
2004年 | 11篇 |
2003年 | 6篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1999年 | 7篇 |
1998年 | 15篇 |
1997年 | 12篇 |
1996年 | 12篇 |
1995年 | 11篇 |
1994年 | 5篇 |
1993年 | 7篇 |
1991年 | 1篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 8篇 |
1987年 | 7篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1984年 | 3篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 4篇 |
1980年 | 8篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 6篇 |
1976年 | 5篇 |
1975年 | 2篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1939年 | 1篇 |
排序方式: 共有265条查询结果,搜索用时 31 毫秒
101.
102.
M Reyes-Lugo M Reyes-Contreras I Salvi W Gelves A Avilán D Llavaneras LF Navarrete G Cordero EE Sánchez A Rodríguez-Acosta 《Asian Pacific Journal of Tropical Biomedicine》2011,1(4):279-284
Objective
To investigate the bioecological relationship between Chagas disease peridomestic vectors and reptiles as source of feeding.Methods
In a three-story building, triatomines were captured by direct search and electric vacuum cleaner search in and outside the building. Then, age structure of the captured Triatoma maculata (T. maculata) were identified and recorded. Reptiles living in sympatric with the triatomines were also searched.Results
T. maculata were found living sympatric with geckos (Thecadactylus rapicauda) and they bit residents of the apartment building in study. A total of 1 448 individuals of T. maculata were captured within three days, of which 74.2% (1 074 eggs) were eggs, 21.5% were nymphs at different stages, and 4.3% were adults.Conclusions
The association of T. maculata and T. rapicauda is an effective strategy of colonizing dwellings located in the vicinity of the habitat where both species are present; and therefore, could have implications of high importance in the intradomiciliary transmission of Chagas disease. 相似文献103.
104.
A simple self‐reported adherence tool as a predictor of viral rebound in people with viral suppression on antiretroviral therapy 下载免费PDF全文
105.
EE J Iweala FO Uhegbu GN Ogu 《African journal of traditional, complementary, and alternative medicines》2010,7(2):113-117
The antisickling properties of crude juice extracts of the edible portions of three commonly consumed tropical fruits namely Persia americana, Citrus sinensis, and Carica papaya were investigated in vitro alongside a new drug preparation called Ciklavit® that has antisickling activity. Four different solvent extracts of the crude juice of each fruit including aqueous, acidic, alkaline and alcoholic extracts were prepared and their antisickling effects on sickle cell trait (HbAS) and sickle cell disease (HbSS) blood samples checked alongside Ciklavit®. Blood samples were stabilized using normal saline and the antisickling effects were checked by counting the number of sickle cells remaining after incubation of the blood samples with the crude fruit extracts and Ciklavit® for twenty-four hours. The results showed that Ciklavit® produced a sustained reduction in the number of sickle cells in both HbAS and HbSS blood samples. Also the alkaline and alcoholic extracts of P. americana and C. papaya produced significant reduction in the number of sickle cells. 相似文献
106.
107.
TAM Kaandorp JJ Bax SE Bleeker J Doornbos EP Viergever D Poldermans EE van der Wall A de Roos HJ Lamb 《Journal of cardiovascular magnetic resonance》2010,12(1):7
Background
To assess the relationship between improved regional and global myocardial function in patients with ischemic cardiomyopathy in response to β-blocker therapy or revascularization.Materials and methods
Cardiovascular Magnetic Resonance (CMR) was performed in 32 patients with ischemic cardiomyopathy before and 8 ± 2 months after therapy. Patients were assigned clinically to β-blocker therapy (n = 20) or revascularization (n = 12). CMR at baseline was performed to assess regional and global LV function at rest and under low-dose dobutamine. Wall thickening was analyzed in dysfunctional, adjacent, and remote segments. Follow-up CMR included rest function evaluation.Results
Augmentation of wall thickening during dobutamine at baseline was similar in dysfunctional, adjacent and remote segments in both patient groups. Therefore, baseline characteristics were similar for both patient groups. In both patient groups resting LV ejection fraction and end-systolic volume improved significantly (p < 0.05) at follow-up. Stepwise multivariate analysis revealed that improvement in global LV ejection fraction in the β-blocker treated patients was significantly related to improved function of remote myocardium (p < 0.05), whereas in the revascularized patients improved function in dysfunctional and adjacent segments was more pronounced (p < 0.05).Conclusion
In patients with chronic ischemic LV dysfunction, β-Blocker therapy or revascularization resulted in a similar improvement of global systolic LV function. However, after β-blocker therapy, improved global systolic function was mainly related to improved contraction of remote myocardium, whereas after revascularization the dysfunctional and adjacent regions contributed predominantly to the improved global systolic function. 相似文献108.
109.
110.