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| 1 | Plant community and ecological analysis of woodland vegetation in Metema Area,Amhara National Regional State,Northwestern Ethiopia显示文摘We studied woodland vegetation in broad-leaved deciduous woodlands of Metema in northwestern Amhara regional state,Ethiopia to determine plant community types and species distribution patterns and their relationships with environmental variables,including altitude,pH,cation exchange capacity,electrical conductivity(EC),and moisture.We used a selective approach with a systematic sampling design.A total of 74 quadrats,each 25m × 25m at intervals of 150 200 m were sampled along the established transect lines.For herbaceous vegetation and soil data collection,five subquadrats each 1m × 1m were established at the four corners and the center of each quadrat.Three community types were identified using TWINSPAN analysis.All three community types showed high diversity(Shannon-Weiner index),the highest in community type II at 3.55.The highest similarity coefficient was 0.49(49%) between community types II and III,reflecting 0.51(51%) dissimilarity in their species richness.The canonical correspondence ordination diagram revealed that the distribution pattern of community type I was explained by moisture while that of community types III and II was explained by EC and altitude and moisture,respectively.Altitude was the most statistically significant environmental variable,followed by moisture and EC in determining the total variation in species composition and distribution patterns while pH and cation exchange capacity were non significant.In conclusion,we recommend that any intervention should take into account these three discrete community types and their environmental settings to make the intervention more successful. | Haile Adamu Wale Tamrat Bekele Gemedo Dalle | 2012 | Journal of Forestry Research2012，23，4： | 5 |
| 2 | Floristic diversity, regeneration status, and vegetation structure of woodlands in Metema Area, Amhara National Regional State, North-western Ethiopia显示文摘We studied woodland vegetation in broad-leaved deciduous woodlands of Metema in northwestern Amhara regional state, Ethiopia Our objective was to describe plant species composition, diversity, regeneration status, and population structure by a selective approach with asystematic sampling design. A total of 74 quadrats (each for 25 m × 25 m,spaced at intervals of 150 200 m) were sampled along established transect lines following the homogeneity of the vegetation. Vegetation data including cover-abundance, height, diameter at breast height (DBH), and numbers of seedlings and saplings of woody species were analyzed using Excel spreadsheet, Shannon Weiner diversity index, and PAST version 1.62. A total of 87 vascular plant species of 74 genera and 36 families were recorded. The dominant family was Fabaceae represented by 16(18.39 %) species of 13 genera. Shannon Weiner diversity and evenness were 3.67 and 0.82, respectively, which showed that the area was endowed with rich floral diversity evenly distributed. The vegetation structure, as quantified by cumulative diameter class frequency distribution,plotted as an interrupted inverted-J-shape pattern with a sharp decreasein the 2nd diameter class. This indicated poor vegetation structure. The diameter classes frequency distributions of selected species plotted infour general patterns i.e., interrupted Inverted-J-shape, J-shape,Bell-shape and Irregular-shape. In conclusion, although the area showedhigh floral diversity and evenness, woody species including Sterculea setigera, Boswellia papyrifera, and Pterocarpus lucens showed lowest recruitment of seedlings and saplings. | Haile Adamu Wale Tamrat Bekele Gemedo Dalle | 2012 | Journal of Forestry Research2012，23，3： | 4 |
| 3 | 超声影像尿动力在尿频尿急为主要症状的女性下尿路症状患者中的诊断价值显示文摘目的:采用超声影像尿动力检查评估尿频尿急为主要症状的女性下尿路症状(lower urinary tract symptoms,LUTS)患者与无LUTS症状女性志愿者之间的膀胱壁厚度(BWT)及逼尿肌厚度(DWT)之间的差异,探讨超声影像尿动力检查在这类患者的临床诊断价值,并确定膀胱壁、逼尿肌增厚的截断值。方法:回顾性分析2014年1月~2016年12月对146例以尿频尿急为主要症状女性LUTS患者,通过临床症状、尿动力检查、膀胱镜检查等进行临床诊断、分类,分别分为逼尿肌不稳定收缩组、低顺应性膀胱组和出口梗阻组3个亚组,将同期入院无LUTS症状女性志愿者90例作为对照组。所有受试者均行经会阴盆底超声检查,分别测量其BWT、DWT:取膀胱穹顶部及两侧3个点,取平均值并记录结果。对比分析各组年龄、BMI、BWT、DWT等一般资料的差异,将BWT、DWT分别带入受试者工作特征曲线(ROC)进行分析,分别计算膀胱壁、逼尿肌增厚的截断值。结果:研究组中逼尿肌不稳定收缩组、低顺应性膀胱组、出口梗阻组BWT、DWT均显著高于对照组,差异有统计学意义(P<0.05),3个试验组之间BWT、DWT差异无统计学意义(P>0.05)。将试验组中BWT、DWT值对比对照组中BWT、DWT值带入ROC工作曲线进行分析,以BWT增厚为标准判断以尿频尿急为主要症状女性LUTS患者,曲线下面积为0.914,当BWT的截断值选取4.95mm时,对于膀胱壁增厚导致女性LUTS症状诊断价值最大。此时的诊断敏感度为84.8%,特异性为97.3%,约登指数0.821,诊断指数为182.1%。以DWT增厚为标准判断以尿频尿急为主要症状女性LUTS患者,DWT曲线下面积为0.873,当DWT的截断值选取2.49mm时,对于逼尿肌增厚导致女性LUTS症状诊断价值最大。此时的诊断敏感度为72.7%,特异性为94.6%,约登指数0.673,诊断指数为167.3%。结论:超声影像尿动力检查是评估以尿频尿急为主要症状的女性LUTS患者可靠的客观量化手段,值得进一步推广。膀胱壁增厚、逼尿肌增厚与逼尿肌不稳定及膀胱顺应性降低有明显相关性。以BWT=4.95mm,DWT=2.49mm作为截断值诊断膀胱壁增厚、逼尿肌增厚导致女性LUTS症状诊断意义最大。 | 卫中庆 陈正森 张丽娟 沈百欣 丁留成 韶云鹏 Nebiyu Elias Tamrat | 2018 | 临床泌尿外科杂志2018，33，1： | 4 |
| 4 | A paleomagnetic and geochronologic study of the Majhgawan kimberlite,India:implications for the age of the Upper Vindhyan Supergroup显示文摘 | Gregory L.C Meert J.G Pradhan V.R Pandit M.K Tamrat E Malone S.J | | 0，，： | 1 |
| 5 | Special delivery: An analysis of mHealth in maternal and newborn health programs and their outcomes around the world显示文摘 | Tamrat Kachnowski | 2012 | Maternal Child Health Journal2012，，16： | 1 |
| 6 | Simulation- based experimentation for designing reliable and efficient Web service orchestrations in supply chains显示文摘 | Tamrat T Marijn J | 2008 | Electronic Commerce Research and Applications2008，7，1： | 1 |
| 7 | Ethnoveterinary medicinal plants at Bale Mountains National Park, Ethiopia显示文摘 | Haile Yineger Ensermu Kelbessa Tamrat Bekele Ermias Lulekal | 2007 | Journal of Ethnopharmacology2007，，1： | 1 |
| 8 | Simulation-based experimentation for designing reliable and efficient Web service orchestrations in supply chains显示文摘 | Tamrat T Marijn J | 2008 | Electronic Commerce Research and Applications2008，7，1： | 1 |
| 9 | Ecological and floristic study of Hirmi woodland vegetation in Tigray Region,Northern Ethiopia显示文摘The dryland area in Ethiopia covers a substantial region endowed with diverse plant resources.However,the landmass has received less attention even if it has high ecological,environmental,and economic uses.The present study was conducted in Hirmi woodland vegetation,which is one of the dryland areas in Ethiopia,with the objective of investigating the floristic composition,plant community types,vegetation structure,communityenvironment relations and its regeneration status.Vegetation and environmental data were collected from 80 sampling plots with a size of 25 m×25 m designated as the main plots.Diameter at breast height(DBH),height,basal area,density,vertical structure,importance value index(IVI),and frequency were computed.Species diversity and evenness were analyzed using Shannon diversity and evenness indices.The plant community types and vegetation-environment relationships were analyzed using classification and ordination tools,respectively.A total of 171 vascular plant species belonging to 135 genera and 56 families were recorded.About 5.3%of the species were endemic and near-endemic to Ethiopia.The highest number of species was recorded in families Fabaceae(16.4%)and Poaceae(11.7%)followed by Asteraceae(7.0%),Combretaceae,Lamiaceae,and Moraceae(3.5%each).Five plant communities were identified.According to the results from ordination analysis,the floristic composition of these plant communities was significantly affected by altitude,slope,sand,silt,soil organic matter,total nitrogen,and disturbance.The vegetation structure reveals that a large number of individual species was categorized in the lower DBH,frequency,and height classes.The highest Shannon diversity index and evenness values of the study area were 4.21 and 0.95,respectively.Anogeissus leiocarpa,Combretum hartmannianum,Ziziphus mucronata,Terminalia macroptera,and Acacia polyacantha were the species with high IVI.Some endemic plants were in the IUCN red list categories of Ethiopia and Eritrea.The overall regeneration status of the study area was poor because of anthropogenic disturbances and grazing pressures.Although the study area is endowed with high plant species diversity including endemism,it is under poor regeneration status due to various disturbances.To overcome this challenge,integrated management measures including monitoring and application of restoration techniques by taking into consideration the significant environmental factors associated with species diversity as well as observed regeneration status and IUCN threat level of the species are highly recommended. | Mehari Girmay Tamrat Bekele Sebsebe Demissew Ermias Lulekal | 2020 | Ecological Processes2020，9，1： | 1 |
| 10 | Special Delivery:An Analysis of m Health in Maternal and Newborn Health Programs and TheirOutcomes Around the World显示文摘 | Tigest Tamrat Stan Kachnowski | 2012 | Maternal and Child Health Journal2012，15，5： | 1 |
| 11 | Special delivery:an analysis of mHealth in maternal and newborn health programs and their outcomes around the world显示文摘 | Tamrat T Kachnowski S | 2012 | Matern Child Health J2012，16，5： | 1 |
| 12 | 牧豆树(Prosopis juliflora)入侵对埃塞俄比亚东北部阿法尔民族地区国家牧场本地物种多样性和木本植物更新的影响显示文摘调查牧豆树(Prosopis juliflora)的入侵及其对本土植物物种的影响和控制该物种入侵具有重要意义。本研究旨在评估:(1)牧豆树入侵对Awash Fentale和Amibara Woredas两地植物物种多样性的影响;(2)牧豆树入侵对本地木本植物更新潜力的影响。样品采集是在牧豆树灌丛、牧豆树与本地物种混生群落、未入侵林地和开阔放牧场进行的。植被调查按照牧豆树的入侵状况分类,然后在不同入侵状况生境中采用随机抽样技术进行数据收集。在植物种类组成中,非入侵林地记录的物种比例最高,为87个(占27.4%),而开阔放牧地记录的物种比例最低,为70个(占22%)。牧豆树的入侵降低了植物的香农多样性指数,香农多样性指数(H’)和物种丰富度(R)的平均值在牧豆树与本地物种混生群落(H’=2.22,R=14)和未入侵林地(H’=2.23,R=13)显著高于牧豆树灌丛(H′=1.96,R=12)和开阔放牧场(H′=1.84,R=10)。在牧豆树与本地物种混生的群落下,本地植物更新苗总密度最高,为358株ha-1,而在牧豆树灌丛下更新幼苗密度最低,为153株ha-1。此外,本地木本植物更新苗密度在牧豆树灌丛下仅为102株ha-1,而在未入侵林地下却高达1252株ha-1。如果牧豆树入侵及其对本地物种多样性的影响继续,外加气候干旱,阿法尔植物区系的植物多样性将受到严重影响,其生态系统服务的变化存在着不确定性。因此,所有利益相关方应参与,并采取多学科研究应用于研究区的牧豆树管理和牧场恢复。 | WAKSHUM SHIFERAW SEBSEBE DEMISSEW TAMRAT BEKELE ERMIAS AYNEKULU | 2023 | Journal of Resources and Ecology2023，14，1： | 0 |
| 13 | Invasion of Prosopis juliflora and its effects on soil physicochemical properties in Afar region,Northeast Ethiopia显示文摘Woody species within pastures and savannas are often associated with‘resource islands’characterized by higher fertility under canopies trees.The aims of this study were to evaluate(1)the effects of Prosopis juliflora on some soil physicochemical properties and(2)the impacts of Prosopis invasion on soil salinity.For soil physicochemical analysis,a total of 104 soil samples from Teru and Yalo Districts were collected.The soil samples were collected from soil depths of 0-15 cm and 15-30 cm in Prosopis invaded and non-invaded open grazing lands.Invasion of Prosopis had significantly affected soil pH,exchangeable Na^(+),water soluble Ca^(2+)+Mg^(2+),water soluble Na^(+),and exchangeable sodium percentage in Teru and Yalo Districts(p<0.05).The invasion of Prosopis significantly increased soil pH(1.5%),but decreased exchangeable Na^(+)(24.2%),exchangeable sodium percentage(21.6%),and water soluble Ca^(2+)+Mg^(2+)(39.9%)than non-invaded lands.Clay content of Prosopis invaded lands was higher by 19%than non-invaded lands.However,sand content of soil was higher under non-invaded lands by 5.6%than Prosopis invaded lands.Most results indicated that invasion of Prosopis had positive effects on physicochemical properties and thus conducive for cereal crops and forages. | Wakshum Shiferaw Sebsebe Demissew Tamrat Bekele Ermias Aynekulu Wolfgang Pitroff | 2021 | International Soil and Water Conservation Research2021，9，4： | 0 |
| 14 | Anthropogenic effects on floristic composition, diversity and regeneration potential of the Debrelibanos Monastery forest patch, central Ethiopia显示文摘This study assesses the effects of human disturbance on:(1)floristic composition,diversity,and plant community types;and,(2)the regeneration potential of woody species in the Debrelibanos Monastery forest patch in the North Showa zone of Oromia National Regional State,Ethiopia.Fifty sample quadrats were placed on parallel transect lines along altitudes in the forest using a systematic sampling design.Quadrats of 1 m^2,100 m^2 and 400 m^2 were used for recording herbaceous/seedling,sapling and tree species,respectively,with symptoms of different human disturbance effects.One hundred and thirteen species belonging to 52 families were recorded in the forest patch.The results show 459.5 stems ha^-1 of tree/shrub species present.Four community types,namely Juniperus procera–Acacia lahai,Carissa spinarum–Acacia abyssinica,Olea europaea subsp.cuspidata–Euphorbia abyssinica and Ficus sur–Allophylus abyssinicus were identified.The overall Shannon–Wiener diversity index was 3.3.The regeneration patterns of some species were poor.Slope,altitude and human activities had significant effects on vegetation patterns and imply that current management practices are not satisfactory to sustain the forest.Unless improved management interventions are made,the sustainability of forest services will be at stake. | Wakshum Shiferaw Tamrat Bekele Sebsebe Demissew | 2019 | Journal of Forestry Research2019，30，6： | 0 |
| 15 | Opportunities for New Biorefinery Products from Ethiopian Ginning Industry By-products:Current Status and Prospects显示文摘The global demand for textile products is rapidly increasing due to population growth,rising living standards,economic development,and fast fashion trends.Ethiopian growth and transformation plan(GTP)gives high priorities for the textile and apparel sectors to transform its agriculturally led economy to an industrial-based economy.To achieve this,the number of tex-tile and apparel industries is rapidly expanding.However,the rapid growth in textile industry is generating mountains and mountains of by-products.In this review,possible applications of cotton stalk and cotton ginning waste in a variety of technologies and products are discussed in Ethiopian context.The finding of this study shows that Ethiopian current cotton cultivating area is about 80000 hm^(2),even though the country has a potential of about 3000810 hm^(2) land for cotton cultivation.From the current cultivated area,more than 240000 t of cotton stalk and 9240 t of cotton ginning trash have been generated as a by-product.But only a very little portion of the cotton stalk is being used as a raw fuel for household purposes and a small portion of cotton ginning trash is used for animal feed.Therefore,these underutilized lignocellulosic biomasses can be used as raw materials for producing different high-value biomaterials and thus country can perceive an economic and environmental benefit.A closer look at the structure and composition of the by-products shows that the whole part of cotton stalk and ginning waste can be used as a source of cellulose which can be exploited for conversion into a number of high-value biomaterials.Thus,conversion of the waste into valuable products can make cotton stalk and ginning by-products an attractive raw material for the production of high value bio-products. | Amare Abuhay Wassie Mengie Tamrat Tesfaye Gemeda Gebino Million Ayele Adane Haile Derseh Yillie | 2021 | Journal of Bioresources and Bioproducts2021，6，3： | 0 |
| 16 | The arbuscular mycorrhizal fungi status of selected tree nurseries in the Ethiopian highlands显示文摘We investigated the arbuscular mycorrhizal fungi(AMF)status of ten nurseries suitable for restoration of dry evergreen Afromontane forests in Ethiopia.We quantified AMF root colonization(RC)and spore abundance(SA)in seedlings of nine native tree species namely Acacia abyssinica Hochst.ex Benth.,Cordia africana Lam.,Dovyalis abyssinica(A.Rich.)Warb.,H agenia abyssinica J.F.Gmel.,Juniperus procera Hochst.ex Endl.,Millettia ferruginea(Hochst.)Baker,Olea europaea L.subsp.c uspidata(Wall.ex G.Don)Cif.,Podocarpus falcatus(Thunb.)R.Br.ex Mirb.and Prunus africana(Hook.f.)Kalkman.We used the ink and vinegar method to stain AMF in roots.RC levels ranged from 8.00 to 99.67%and were generally higher than the RC levels reported from other similar nurseries in Ethiopia.SA levels ranged from 1 to 25 spores g~(-1)and werecomparable with some reports from the field in Ethiopia but they were lower than levels reported by another similar study.RC was more affected by host species than nursery location,while the reverse was true for SA.The results also showed that nursery management could improve AMF status among seedlings.When all nursery tree species were considered,RC and SA levels were unrelated.No strong correlation existed between the nursery management variables considered and RC or SA.However,considering C.africana,J.procera and P.falcatus separately,RC-age(r_(s)=0.829,P=0.042)correlation for O.europaea and RC-pot diameter(r_(s)=0.820,P=0.046),RC-pot volume(r_(s)=0.928,P=0.008)and SA-age(r_(s)=0.943,P=0.005)correlations for C.africana,were significant,strong and positive.Generally,most of the tree species and particularly,early-mid successional tree species had sufficient AMF inoculum.Hence,only the mid-late successional tree species;J.procera,P.falcatus,and P.africana may require AMF inoculation,preferably,during filed planting.Based on our results,age and pot volume were identified to be important variables potentially affecting RC and SA.To better understand the effects of these and other nursery management variables,additional study is required.We demonstrated for the first time that black Hero ink is suitable for staining root AMF and can be used in future AMF research. | Fisseha Asmelash Tamrat Bekele Fassil Kebede Zerihun Belay | 2021 | Journal of Forestry Research2021，32，3： | 0 |
| 17 | When are patients lost to follow-up in pre-antiretroviral therapy care? a retrospective assessment of patients in an Ethiopian rural hospital显示文摘Background:There is concern about the increasing rates of loss to follow-up(LTFU)among pre-antiretroviral therapy(pre-ART)patients in Ethiopia.Little information is available regarding the time when pre-ART patients are lost to follow-up in the country.This study assessed the time when LTFU occurs as well as the associated factors among adults enrolled in pre-ART care in an Ethiopian rural hospital.Methods:Data of all adult pre-ART patients enrolled at the Sheka Zonal Hospital between 2010 and 2013 were reviewed.Patients were considered lost to follow-up if they failed to keep scheduled appointments for more than 90 days.The Cox proportional hazards regression model was used to assess factors associated with time until LTFU.The Kaplan-Meier survival table was used to compare the LTFU experiences of patients,segregated by significant predictors.Results:A total of 626 pre-ART patients were followed for 319.92 person-years of observation(PYOs)from enrolment to pre-ART outcomes,with an overall LTFU rate of 55.8 per 100 PYOs.A total of 178(28.4%)pre-ART patients were lost to follow-up,93%of which occurred within the first six months.The median follow-up time was 6.13 months.The independent predictors included:not having been started on co-trimoxazole prophylaxis(adjusted hazard ratio[AHR]=1.77,95%confidence interval[CI],1.12–2.79),a baseline CD4 count of or above 350 cells/mm3(AHR=1.87,95%CI,1.02–3.45),and an undisclosed HIV status(AHR=3.04,95%CI,2.07–4.45).Conclusion:A significant proportion of pre-ART patients is lost to follow-up.Not having been started on co-trimoxazole prophylaxis,presenting to care with a baseline CD4 cell count≥350 cells/mm3,and an undisclosed HIV status were significant predictors of LTFU among pre-ART patients.Thus,close monitoring and tracking of patients during this period is highly recommended.Those patients with identified risk factors deserve special attention. | Tamrat Shaweno Debebe Shaweno | 2015 | Infectious Diseases of Poverty2015，4，1： | 0 |
| 18 | Relationship between Prosopis juliflora invasion and livelihood diversification in the South Afar region,Northeast Ethiopia显示文摘This study assessed the effects of Prosopis juliflora invasion on livelihood diversification and evaluated the determinants of livelihood diversification in two districts in the South Afar region of Northeast Ethiopia.Using random sampling method,154 households and 2 focus groups composed of 10 individuals were selected from four sites in the two districts.The relationship between P.juliflora invasion and incomes obtained from P.juliflora varied across the study sites.In Awash Fentale District and Amibara District,11.0%and 3.2%of households,respectively,earned income from P.juliflora charcoal production.In total,14.3%of households were involved in charcoal production.In addition,19.9%of households earned income from selling P.juliflora pods and wood materials in the two districts.With the exception of income from P.juliflora charcoal production,the sex of households did not affect incomes from other livelihood activities.Moreover,household educational attainment significantly affected income obtained from vegetables,fruits,and cereal crops.Male householders were engaged in more diverse livelihood activities than female householders.Reversing the severe invasion of P.juliflora on grazing and woodlands in the region is advisable through integrated natural resources,pastoralist participation,and multidisciplinary research strategies. | Wakshum Shiferaw Sebsebe Demissew Tamrat Bekele Ermias Aynekulu | 2020 | Regional Sustainability2020，1，1： | 0 |
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