首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   200篇
  免费   9篇
医药卫生   209篇
  2023年   2篇
  2022年   2篇
  2021年   10篇
  2020年   6篇
  2019年   3篇
  2018年   5篇
  2017年   4篇
  2016年   3篇
  2015年   7篇
  2014年   6篇
  2013年   12篇
  2012年   7篇
  2011年   9篇
  2010年   5篇
  2009年   4篇
  2008年   4篇
  2007年   10篇
  2006年   18篇
  2005年   6篇
  2004年   14篇
  2003年   16篇
  2002年   5篇
  2001年   8篇
  2000年   6篇
  1999年   4篇
  1998年   2篇
  1994年   2篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   3篇
  1989年   1篇
  1988年   2篇
  1987年   5篇
  1986年   3篇
  1985年   1篇
  1984年   1篇
  1982年   3篇
  1981年   1篇
  1979年   1篇
  1978年   1篇
  1976年   1篇
排序方式: 共有209条查询结果,搜索用时 15 毫秒
1.
2.
BackgroundOrgan transplantation is considered one of the greatest advances of modern science, and it has given many patients a renewed lease on life. The demand for organs far exceeds the supply. Health professionals are fundamental in the process of organ procurement.ObjectiveTo assess the attitude, willingness, and associated factors in organ donation among health professionals of Gondar, Ethiopia.MethodsOur cross-sectional study was conducted among 382 randomly selected health professionals in Gondar using a self-administered questionnaire. Multivariable logistic regression analysis was applied to analyze the data.ResultsAmong health professionals, 79.1% had favorable attitude toward organ donation and 74.6% were willing to donate their organs. After adjusting for covariates, the odds of having a favorable attitude about organ donation were 3.2 and 11.9 times higher in the professions of laboratory technologists and medical doctors, respectively. By keeping all other variables constant, attitude was found to be positively associated with awareness (adjusted odds ratio [aOR] 12.74, 95% confidence interval [CI] 3.71-43.8) and being a member of the Red Cross Association (aOR 5.24, 95% CI 1.46-18.96). Willingness was positively associated with awareness (aOR 6.25, 95% CI 2.0-19.53), a member of the Red Cross Association (aOR 5.09, 95% CI 1.5-17.22), a laboratory technologist (aOR 3.57, 95% CI 1.37-9.29), and a medical doctor (aOR 6.52, 95 % CI 1.93-22.01).ConclusionsThe main findings indicated that the majority of health professionals in Gondar had a favorable attitude toward organ donation and were willing to donate their organs in times of need.  相似文献   
3.
Silk sericin was extracted from the cocoons of three Southern African wild silk moth species, namely Gonometapostica, G. rufobrunnae (Lepidoptera: Lasiocampidae), and Argema mimosae (Lepidoptera: Saturniidae); these three sericin extracts were analysed to determine the relationship that exists between their chemical structures and their functional properties. The relationship was investigated by utilising several methods that include the determination of the amino acid composition, and characterisation of the secondary structures with Fourier transformation infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The antibacterial properties of these three sericin extracts were evaluated by an agar well diffusion assay with three Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus, and Staphylococcus epidermidis) as test microorganisms; and, lastly, the antioxidant properties of the three sericin extracts were determined using several scavenging methods that include the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH), 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS˙+), and the ferric reducing antioxidant power (FRAP) assay. The amino acid composition in the silk sericin extracts from G. postica, G. rufobrunnea, and Argema mimosa in terms of the polar/non-polar ratio (P/NP) was found to be 65:35, 56:44, and 59:41, respectively. The FTIR spectra of these three silk sericin extracts showed distinct major bands such as amide A (3265 cm−1), amide B (3062 cm−1), amide I (1644 cm−1), amide II (1538 cm−1), and amide III (1244 cm−1). The XRD patterns of the silk sericin extracts revealed both amorphous and α-helical structures, with small crystalline regions. All three silk sericin extracts presented potent antibacterial efficacy against the three Gram-positive bacteria and were found to have excellent antioxidant activities against the tested free radicals.  相似文献   
4.
5.
Washed red blood cells (WRC) have been used for replacing the blood loss in haemophilia A patients with antibody to Factor VIII. Levels of VIII coagulant activity (VIII:C), VIII coagulant antigen (VIII:CAg) and VIII related antigen (VIIIR:Ag) have been measured during the different steps of the preparation of WRC. The amount of VIII:CAg decreases very rapidly after washing and both are undetectable in the final product. These results were correlated with the absence of anamnestic response in 10 haemophilia A patients with inhibitor known as high responders.  相似文献   
6.
7.

Background  

Improving child survival through various health interventions has been one of the main preoccupations of public health programs in developing nations. However, efforts to understand the child death determinants and determine whether the health interventions are really contributing to the reduction of mortality were not satisfactory. The purpose of this study is to identify determinants and causes of child mortality.  相似文献   
8.
Creutzfeldt–Jakob disease (CJD) is the most important human transmissible spongiform encephalopathy (prion disease), recognised in sporadic, genetic but also iatrogenic forms. The identification of 8 health care workers in a group of 114 definitive CJD patients in Slovakia suggested the possibility of professionaly acquired CJD and induced the investigation of potential endo- and exogenous risk factors. In CJD-affected health professionals special attention was paid to a detailed occupational history, including a possible professional contact with CJD patient and to the findings characteristic for iatrogenic CJD: early cerebellar symptomatology, long duration of the disease, absence of typical EEG finding and homozygosity of PRNP gene at codon 129. Analysis of epidemiological, clinical and molecular biological data in investigated group of CJD-affected health professionals gave no evidence of an occupational risk for CJD.  相似文献   
9.
The aim of this study was to evaluate the safety and efficacy of stent graft coverage of hypogastric artery in the management of aortoiliac aneurysms. Between January 2000 and December 2002, 98 patients underwent endovascular repair of aortoiliac aneurysms (EVAR). Of these, 24 (24.5%) required occlusion of one hypogastric artery to facilitate the endovascular repair. Based on the method of hypogastric artery occlusion, patients were divided in to two groups. Group A (13/24 = 54%) underwent standard coil embolization followed by hypogastric artery orifice coverage whereas group B (11/24 = 46) underwent hypogastric artery orifice coverage without coil embolization. Post-EVAR computed tomographic angiography (CTA) was used to determine occurrence of endoleaks from the hypogastric artery orifice and patency of superior gluteal artery in both groups. These findings were further correlated with presence or absence of gluteal claudication. There was no difference in age (p < 0.38) or iliac aneurysm size (p < 0.3). In group A (13 patients), occlusion of superior gluteal artery was seen in 6 (46%). Four of six (66%) patients developed severe gluteal claudication. Patients in group A were likely to require more than one intervention (p < 0.00036). No patients in group B developed occlusion of the superior gluteal artery (p < 0.04) or gluteal claudication (p < 0.046). No endoleaks were seen from the origins of hypogastric artery in either group. The follow-up period ranged from 2 to 35 months. Hypogastric artery orifice coverage without coil embolization effectively prevented retrograde endoleak without the occurrence of disabling gluteal claudication. Coil embolization of the hypogastric artery may be unnecessary during treatment of aortoiliac aneurysm.Presented at the Twenty-eighth Annual Meeting of the Peripheral Vascular Surgery Society, Chicago, IL, June 7, 2003.  相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号