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9篇 您的检索式:作者名="Gezahegn"
    题名 作者 年代 出处 被引量
1Novel polymeric membrane structures:microcapsules显示文摘Torras C Gezahegn D Pitol-Filho L 2006Desalination2006,,:1
2Allelopathic effects of an invasive alien weed Parthenium hysterophorus L compost on let- tuce germination and growth 显示文摘Mulatu W Gezahegn B Solomon T 2009African Journal of Agricultur- al Research2009,4,11:1
3卡马西平结晶工艺研究显示文摘为了研究卡马西平的结晶工艺,以甲醇为溶剂,正己烷为反溶剂,采用溶析结晶制备卡马西平晶体。利用X射线粉末衍射、红外光谱、拉曼光谱、光学显微镜等对卡马西平的晶型进行筛选和表征,考察卡马西平质量浓度、结晶温度、溶剂与反溶剂的体积比等参数对结晶得率和晶型的影响。研究结果表明,甲醇与正己烷溶析结晶得到两种晶型的卡马西平,分别为针状的晶型Ⅱ和棱镜状的晶型Ⅲ;结晶温度是影响晶体得率的主要因素,在0℃时,结晶得率可达98.5%,在40℃时,结晶得率仅为15.2%;溶剂与反溶剂的体积比是影响晶型的主要因素,体积比越大越利于晶型Ⅲ的生成。研究结果可为卡马西平晶型Ⅲ的生产提供参考。Taso Gezahegn Mekuria 蒋成君 2020浙江科技学院学报2020,32,4:1
4DNA barcoding of the main cultivated yams and selected wild species in the genus Dioscorea显示文摘基于词法特点区分薯蓣属植物种类极其困难、不可靠,提出对 breeders 和 genebank 管理者的挑战。分子的试金的开发能基于 DNA barcoding 便于重要 Dioscorea 种类的快速、精确的鉴定。为 Dioscorea 种类鉴定, rbcL 和 matK loci 开发一个 DNA barcoding 系统(在一致并且在联合) ,叶绿体染色体的非编码的 intergenic 分隔符 trnH-psbA,并且原子它的区域为开发候选人 DNA barcodes 用标准被调查。所有 DNA barcoding 序列被估计便于 PCR 扩大,顺序质量和种类差别对待的力量。在调查的标记之中, matK 地点以种类鉴定(63.2%) 表现了很好,除了检测有 0.0196 的吝啬的分叉(SD=0.0209 ) 的高种间的变化。二个编码区域(rbcL + matK ) 的联合决心是最佳(76.2%) DNA barcoding 途径能从 21 种类被定义为 16。当 rbcL 展出了好 PCR 扩大效率和顺序质量时,它的种类差别对待的力量与 47.6% 鉴定是相对差的。同样, trnH-psbA 区域有弱辨别效率仅仅 36.8% 。当更柔韧的 DNA barcoding 系统的开发是进行中的挑战时,我们的结果显示 rbcL + matK 联合能为 Dioscorea 种类鉴定作为多地点 DNA barcode 区域被利用。Gezahegn Girma Charles Spillane Melaku Gedil 2016Journal of Systematics and Evolution2016,54,3:1
5Inter Simple Sequence Repeat (ISSR) analysis of wild and cultivated rice species from Ethiopia显示文摘Gezahegn Girmal Kassahun Tesfaye Endashaw Bekele 2010African Journal of Biotechnology2010,9,32:1
6Prevalence and antimicrobial resistance of Salmonella isolated from lactating cows and in contact humans in dairy farms of Addis Ababa:a cross sectional study显示文摘Addis Z Kebede N Worku Z Gezahegn H.Yirsaw A.Kassa T 0,,:1
7Leukocyte Adhesion Molecules in Animal Models of Inflammatory Bowel Disease显示文摘Jesus R Ni Gezahegn Klaus L 2008Inflamm Bowel Dis2008,14,12:1
8The Seismo-Volcanic Crisis on the Dabbahu Magmatic Segment,Afar Rift,Ethiopia显示文摘The Afar depression is located at the junction among Red sea,Gulf of Aden and the East African Rifts.Tectonic and magmatic activities in Northern Afar have localized to approximately 60 km long, seismically and volcanically active magmatic segments. In September 2005 a seismo-volcanic event of unprecedented scale and intensity took place along the Dabbahu magmatic segment.This activityYaregal Yenealem Gezahegn Yirgu 2009地学前缘2009,16,S1:0
9Malaria epidemiology and interventions in Ethiopia from 2001 to 2016显示文摘Background:Ethiopia is one of the African countries where Plasmodium falciparum and P.vivax co-exist.Monitoring and evaluation of current malaria transmission status is an important component of malaria control as it is a measure of the success of ongoing interventions and guides the planning of future control and elimination efforts.Main text:We evaluated changes in malaria control policy in Ethiopia,and reviewed dynamics of country-wide confirmed and clinical malaria cases by Plasmodium species and reported deaths for all ages and less than five years from 2001 to 2016.Districts level annual parasite incidence was analysed to characterize the malaria transmission stratification as implemented by the Ministry of Health.We found that Ethiopia has experienced major changes from 2003 to 2005 and subsequent adjustment in malaria diagnosis,treatment and vector control policy.Malaria interventions have been intensified represented by the increased insecticide treated net(ITN)and indoor residual spraying(IRS)coverage,improved health services and improved malaria diagnosis.However,countrywide ITN and IRS coverages were low,with 64%ITN coverage in 2016 and IRS coverage of 92.5%in 2016 and only implemented in epidemic-prone areas of>2500 m elevation.Clinical malaria incidence rate dropped from an average of 43.1 cases per 1000 population annually between 2001 and 2010 to 29.0 cases per 1000 population annually between 2011 and 2016.Malaria deaths decreased from 2.1 deaths per 100000 people annually between 2001 and 2010 to 1.1 deaths per 100000 people annually between 2011 to 2016.There was shrinkage in the malaria transmission map and high transmission is limited mainly to the western international border area.Proportion of P.falciparum malaria remained nearly unchanged from 2000 to 2016 indicating further efforts are needed to suppress transmission.Conclusions:Malaria morbidity and mortality have been significantly reduced in Ethiopia since 2001,however,malaria case incidence is still high,and there were major gaps between ITN ownership and compliance in malarious areas.Additional efforts are needed to target the high transmission area of western Ethiopia to sustain the achievements made to date.Hiwot S Taffese Elizabeth Hemming-Schroeder Cristian Koepfli Gezahegn Tesfaye Ming-chieh Lee James Kazura Gui-Yun Yan Guo-Fa Zhou 2018Infectious Diseases of Poverty2018,7,1:0
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