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8篇 您的检索式:作者名="Ahmed SAM"
    题名 作者 年代 出处 被引量
1Systematic Evaluation of Ureteral Occlusion Devices: Insertion, Deployment, Stone Migration, and Extraction显示文摘Mahfuza Ahmed Renato N. Pedro Sam Kieley Joseph W. Akornor William K. Durfee Manoj Monga 2009Urology2009,,:2
2Isolation and characterization of highly pathogenicavian influenza virus subtype H5N1 from donkeys 显示文摘Ahmed SAM Ahmad AG Salama ASS 2010Journal of Biomedical Science2010,17,:1
3Systematic Evaluation of Ureteral Occlusion Devices: Insertion, Deployment, Stone Migration, and Extraction显示文摘Mahfuza Ahmed Renato N. Pedro Sam Kieley Joseph W. Akornor William K. Durfee Manoj Monga 2009Urology2009,,5:1
4Comparative disposition of the antineoplastic agent 9-nitroeamptothecin and the inactive isomer 12-nitrocamptothecin in CASE-bearing nude mice:effect of route of administration on tissue distribution 显示文摘Ahmed E Ahmed Sam Jacob Beppino C Giovanella 1997Cancer Chemother Pharmacol1997,41,:1
5International Business Cycles显示文摘Ahmed Shaghil Ickes Barry Ping Wang Byung Sam Yoo 1993American Economic Review1993,,83:1
6Inferior pole collecting system anatomy :its probable role in extracorporeal shock wave lithotripsy显示文摘Sam paio FJB Aragao AHM 1992J Urol1992,147,2:1
7Road traffic accidents, near-misses and their associated factors among commercial tricycle drivers in a Nigerian city显示文摘Tricycles form an important part of the intra-city transport system, following the ban placed on motorcycles in Maiduguri, Nigeria. However, no previous studies have been conducted to assess the occurrence of accidents among them. The objective of this study was to determine the prevalence of road accidents, near-misses, and their associated factors among commercial tricycle drivers in Maiduguri. A cross-sectional study was conducted among registered commercial tricycle drivers in Maiduguri who had been in the business for at least a year. Data was collected through face-to-face interviews, using a structured questionnaire, and was subjected to bivariate and multivariate analysis using SPSS. The prevalence of road accidents and near misses were 46% and 50.3% respectively. Only six (3.9%) of respondents who had experienced a near-miss mentioned that they occurred while they were fully awake;during clear weather;and on a smooth, broad, and non-congested road. All the others had experienced the near miss under an unfavourable weather, road, and/or while feeling sleepy. In the bivariate analysis, only psycho-active substance use (χ^2=3.941;df =1;p=0.047) and having experienced more than one near miss (χ^2=31.807;df =1;p<0.001) were significantly associated with having an accidents. However, in the multivariate analysis, having experienced more than one near miss was the only factor which significantly predicted having an accident (OR=2.89 95% CI: 1.64-5.09;p<0.001). There is a need to conduct further intervention studies to determine the effectiveness of intervention measures in reducing accident rates among these tricycle drivers.Ahmed Dahiru Balami Garba Sam 2019Health and Environment2019,1,1:0
8Phytochemical composition and toxicity assessment of Ammi majus L.显示文摘Objective:To assess the acute and subacute toxicity as well as the phytochemical composition of two extracts and three fractions of Ammi majus L.Methods:The aqueous extracts were prepared separately by maceration for 48 h and by infusion for 1 h,while the fractions were prepared by the Soxhlet extractor,successively employing cyclohexane,ethyl acetate,and ethanol.The acute toxicity study was carried out in accordance with the OECD N°423 guideline at a single dose(2000 mg/kg)in mice for 14 days.The subacute toxicity study was performed by a daily oral administration of 250 mg/kg 2 for 10 d and 100 mg/kg doses for 28 d.Phytochemical screening was performed using staining and precipitation reactions,while the chemical characterization of some analytes was detected by HPLC-MS/MS analysis.Results:In the acute toxicity study,no signs of toxicity such as convulsion,salivation,diarrhea,sleep and coma were observed during 30 minutes and 14 days,so the lethal dose was higher than 2000 mg/kg for each extract and fraction.The subacute toxicity results showed that at a dose of 250 mg/kg,61.10%of the animals died and the rest developed morbidity.On the other hand,at a dose of 100 mg/kg,all the animals were still alive after 28 days,with no morbidity and the biochemical parameters were normal with no abnormalities in the liver,kidneys and pancreas.Phytochemical screening indicated the presence of flavonoids,tannins,coumarins,and free quinones and the absence of alkaloids and anthocyanins.Conclusions:The extracts and fractions of Ammi majus L.are not toxic in the short and long term with a varied chemical composition.Toxicological tests on animals other than rodents and in the long term(more than 28 days)are needed to further confirm the safety of Ammi majus extracts.Otman El-guourrami Najoua Salhi Fatima Zahra Benkhouili Gokhan Zengin Mustafa Abdullah Yilmaz Mouna Ameggouz Ahmed Zahidi Lamiaa Rouas Abdelhakim Bouyahya Khang Wen Goh Toong Hai Sam Long Chiau Ming Anass Doukkali Hanane Benzeid 2023Asian Pacific Journal of Tropical Biomedicine2023,13,4:0
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