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| 1 | Effects of grazing intensity to water source on grassland condition, yield and nutritional content of selected grass species in Northwest Ethiopia显示文摘Background:Savanna grasslands are globally important ecosystems consisting of one of the most extensive grazing lands with unique biodiversity.The objectives of the study were to assess the effect of grazing intensity on grassland ecosystem condition,herbaceous plant biomass production,and nutritional content of selected grass species.Methods:The study was conducted at Chagni Ranch,Northwest Ethiopia.Four transects to water source point at regular intervals of 20m between sampling plots along transects were used for data collection.The distance between the four transects was 200m in radius.Data were collected on grass composition,basal cover,litter cover,number of seedlings,and age distribution of dominant grasses(i.e.,young,medium,or old in terms of stage of maturity),soil condition in terms of soil compaction,and soil erosion linked to the effects of trampling by grazing animals along transects(hereafter referred to as transect)to water source point.The total sample size for grass species was 160 plots.The grassland ecosystem condition,herbaceous biomass,and grass nutritional content were used as response variables linked to transect from water source point.The effects of transect on grassland ecosystem condition scores and grass nutritional content were analyzed using the analysis of variance(ANOVA).Results:Grassland condition factors like grass composition,basal cover,litter cover,age distribution of dominant grasses,and soil condition were significantly(P<0.05)higher for the furthest transect to water source point than nearest transect.Out of the 28 identified herbaceous species,grasses accounted for 64.3%of the herbaceous community.Within grass species,about 55.6%were highly desirable in terms of palatability and grazing value(as most palatable species are susceptible to heavy grazing intensity).The results showed a significantly(P<0.05)higher proportion of perennial grasses at the furthest transect to water source point than nearest transect.The dry matter yield at the furthest transect(TD4)and third transect(TD3)were significantly(P<0.05)higher than the nearest transect to water source point(i.e.,the first transect(TD1)and second transect(TD2)).Ash,neutral detergent fiber,acid detergent fiber,and acid detergent lignin contents of Cynodon dactylon,Sporobolus pyramidalis,and Digitaria ternata were significantly(P<0.05)higher at the furthest transect to water source point than nearest transect.Grazing intensity had no significant effect on the crude protein content of Cynodon dactylon and Sporobolus pyramidalis at different transects.Conclusions:The results showed that the furthest transect to water source point were in good condition.Grass biomass production and the nutritional contents of grasses were higher for the furthest transect to water source point.The results suggested that increased grazing intensity towards water source point greatly reduced the abundance of desirable perennial grasses and the sustainability of grassland for livestock production. | Yaregal Melak Ayana Angassa Aster Abebe | 2019 | Ecological Processes2019，8，1： | 3 |
| 2 | Transvenous embolization of dural carotid cavernous fistulas:a series of 44 consecutive patients显示文摘 | Yoshida K Melake M Oishi H | 2010 | AJNR2010，31，： | 1 |
| 3 | Aretrospective clinical and angiographic study of thecoilingoutcome of rupture dintracrania laneurysms 显示文摘 | Melake M S Yamamoto M Yoshida K | 2010 | J Clin Neurosci2010，17，： | 1 |
| 4 | Transvenous embolization of dural carotid cavernous fistulas:a series of 44 consecutive patients显示文摘 | Yoshida K Melake M Oishi H | 2010 | Am J Neuroradiol2010，31，： | 1 |
| 5 | Incidence of heli- cobacter pylori infection and their clarithromycin-resistant strains inotitis media with effusion?regarding phenotypic and genotypic studies显示文摘 | Melake NA Shaker GH Salama MA | 2012 | Saudi Pharm J2012，20，4： | 1 |
| 6 | Arsenic methylation and lung and bladder cancer in a case-control study in northern Chile 显示文摘 | Melak D Ferrcccio C Kalman D | 2014 | Toxicol AppI Pharmacol2014，274，2： | 1 |
| 7 | A retrospective clinical and angio- graphic study of the coiling outcome of ruptured intracranial aneyrysms 显示文摘 | Melake MS Yamamoto M Yoshida K | 2010 | Clin Neurosci2010，17，： | 1 |
| 8 | Arsenic methylation and lung and bladder cancer in a case-control study in northern Chile显示文摘 | Dawit Melak Catterina Ferreccio David Kalman Roxana Parra Johanna Acevedo Liliana Pérez Sandra Cortés Allan H. Smith Yan Yuan Jane Liaw Craig Steinmaus | 2014 | Toxicology and Applied Pharmacology2014，，2： | 1 |
| 9 | Transvenous embolization of du- ral carotid cavernous fistulas :a series of 44 consecutive patients显示文摘 | Yoshida K Melake M Oishi H | 2010 | AJNR Am J Neuroradio12010，31，4： | 1 |
| 10 | A retrospective clin- ical and angiographic study of the coiling outcome of ruptured in- tracranial aneurysms 显示文摘 | Melake MS Yamamoto M Yoshida K | 2010 | J Clin Neurosci2010，17，3： | 1 |
| 11 | Transvenous embolization ofdural carotid cavernous fistulas: a series of 44 consecutive patients 显示文摘 | Yoshida K Melake M Oishi H | 2010 | AJNR Am J Neuroradiol2010，31，4： | 1 |
| 12 | A retrospective clinical and angiographic study of the coiling outcome of ruptured intracranial aneurysms 显示文摘 | Melake MS Yamamot OM Yoshida K | 2010 | Clin Neurosci2010，17，3： | 1 |
| 13 | Transvenous embolization of dural carotid cavernous fistulas:a series of 44 consecutive patients显示文摘 | Yoshida K Melake M Oishi H | 2010 | AJNR2010，31，4： | 1 |
| 14 | Occlusivewound dressings in emergency medicine and acute care显示文摘 | Fonder MA Ma melak AJ Lazarus GS | 2007 | Emerg Med Clin North Am2007，25，1： | 1 |
| 15 | The applicability of Johnson-Mehl-Avrami model in the thermal analysis of the crystallization ki- netics of glasses显示文摘 | Melak J | 1995 | Thermochim Acta1995，267，： | 1 |
| 16 | 扬州鹅NPFFR1基因CDS区克隆、生物信息学分析及组织表达检测显示文摘本研究旨在对鹅促性腺激素抑制激素受体基因(NPFFR1)进行克隆及生物信息学分析,并检测其在鹅不同组织中的表达。利用鸡NPFFR1基因为种子序列,采用RT-PCR方法克隆出扬州鹅NPRRF1基因,并通过相关软件对基因序列进行生物信息学分析。结果显示:共发现扬州白鹅NPFFR1基因的两种剪接形式:剪接体1的ORF大小为1 200 bp,编码399个氨基酸;剪接体2的ORF大小为432 bp,编码143个氨基酸,相对剪接体1缺失31 bp。对其进行生物信息学分析发现,鹅NPFFR1基因与鸡NPFFR1基因CDS序列同源性为92.8%,其产物是一种不稳定、疏水性蛋白,主要分布在细胞膜上;蛋白质跨膜结构预测显示鹅NPFFR1蛋白含有7个跨膜结构,属于跨膜蛋白,无信号肽片段。对产蛋末期母鹅10个组织样品的cDNA实时定量PCR结果显示,NPFFR1基因在各组织中均有表达,在下丘脑中表达最高,其次是腹脂、小肠、卵巢、胃、垂体、心脏、肌肉,在肾脏以及肝脏中表达很低。研究结果为今后探究鹅NPFFR1蛋白的相关功能及与其他蛋白质的相互作用提供了理论依据,同时为扬州鹅生殖轴调控产蛋性能的机理研究提供参考。 | 汪琴 Melak Sherif 韦伟 张立凡 陈杰 | 2019 | 畜牧与兽医2019，51，11： | 0 |
| 17 | Predictive value of alarm features in diagnosing upper gastrointestinal malignancies among dyspeptic patients:A cross-sectional study in Ethiopia显示文摘Objective:The study aimed to determine the overall predictive value of alarm features in diagnosing upper Gastrointestinal(GI)malignancies and significant endoscopic findings among patients undergoing elective Esophagogastroduodenoscopy(EGD)at Tikur Anbessa Special Hospital(TASH)and Adera Medical Centre(AMC).Methods:It was an institution-based cross-sectional study conducted on patients undergoing elective endoscopy for an upper GI complaint from July to September 2022.Data was collected from patient charts,and biopsies were taken for histologic confirmation.The study assessed the association of alarm symptoms and signs with significant upper gastrointestinal(UGI)endoscopic findings and malignancies.Results:142 patients were selected,with an average age of 48.35 and 52.1% being male.Epigastric pain was the most common reason for an endoscopy.62% of patients had at least one alarm feature,the most common being unexplained weight loss and UGI bleeding.The study found a strong association between the presence of alarm features,significant endoscopic findings,and UGI malignancies.The pooled sensitivity and specificity of any alarm feature for any significant finding were 79% and 64.9%,respectively,and for malignancy,100% and 39.7%,respectively.The presence of the alarm feature was associated with an increase of 6.801 in the odds of developing SEF and an increase of 4.199 in the odds of developing malignancy.Conclusions:UGI alarm symptoms and signs like an abdominal mass,persistent vomiting,dysphagia,and UGI bleeding are predictive of significant endoscopic findings and malignancies.Hence,EGD should be done and suspicious lesions should be biopsied early,regardless of gender,age,or duration of symptoms. | Wudassie Melak Wassihun Asmare Abate Bane Mengistu Erkie | 2023 | Gastroenterology & Hepatology Research2023，5，3： | 0 |
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