维普中文期刊产品整合服务
15篇 您的检索式:作者名="Sisay"
    题名 作者 年代 出处 被引量
1埃塞俄比亚金属矿产资源综述显示文摘在大量查阅、深刻分析国内外中英文文献以及实地野外调查踏勘的基础上,对埃塞俄比亚国家的金属矿产资源进行了较为详细地概述。研究表明,该国金属矿产资源主要分布在西部、北部和南部绿岩带。从前寒武纪到近代构造构成了埃塞俄比亚地质学的基础。其中低级变质火山沉积岩组合赋存了绝大多数经济矿床,包括金、铂族元素、镍、贱金属(Cu、Pb、Zn)、磷酸盐、铁等,并且其中生代沉积岩含有天然燃料矿产和一些金属矿产如孔雀石、锰矿石和含石膏矿物。分析发现埃塞俄比亚金属矿产资源具有良好的开采和开发前景,特别是金、铂等贵金属,镍等黑色金属,铜等有色金属,铌、钽等稀有金属,铀(钍)等放射性金属。杨波涌 鲍征宇 董志成 Sisay Ayalew Amera Yonas Bekele 2011资源与产业2011,13,6:3
2Prevalence and molecular char-acterization of porcine enteric caliciviruses and first detection of por-cinekobuviruses in US swine显示文摘SISAY Z WANG Q OKA T 2013Arch Virol2013,158,7:1
3Prevalence and molecular characterization of porcine enteric caliciviruses and first detection of porcine kobuviruses in US swine显示文摘Zufan Sisay Qiuhong Wang Tomoichiro Oka Linda Saif 2013Archives of Virology2013,,:1
4Prevalence and molecular characterization of porcine enteric caliciviruses and first detection of porcine kobuviruses in US swine显示文摘Sisay Z Wang Q Oka T 2013Arch Virol2013,158,7:1
5Prevalence and risk factors of hepatitis C among individuals presenting to HIV testing centers, hawassa city southern Ethiopia 显示文摘Alemayehu A Tassachew Y Sisay Z 2011BMC Res Notes2011,4,:1
6Analysis of environmental factors determining the abundance and diversity of macroinvertebrate taxa in natural wetlands of Southwest Ethiopia显示文摘Seid Tiku Mereta Pieter Boets Argaw Ambelu Bayih Asgdom Malu Zewdu Ephrem Addisu Sisay Hailu Endale Menberu Yitbarek Amana Jemal Luc De Meester Peter L.M. Goethals 2011Ecological Informatics2011,,1:1
7显示文摘Byung H Woo Janusz W Kostanski Sisay G ebrekidan 2001Journal of Controlled Release2001,75,:1
8Rec- ognizing and Interpreting Temporal Expressions in Open Domain Texts 显示文摘David Ahn Sisay Fissaha Adafre Maarten de Rijke 2005Digital Information Management2005,3,1:1
9Field investigation on the repellent activity of some aromatic plants by traditional means against Anopheles arabiensis and An. pharoensis (Diptera: Culicidae) around Koka, central Ethiopia显示文摘Sisay Dugassa Girmay Medhin Meshesha Balkew Aklilu Seyoum Teshome Gebre-Michael 2009Acta Tropica2009,,1:1
10Serum chemokine profiles in visceral leishmaniasis,HIV and HIV/visceral leishmaniasis co-infected Ethiopian patients显示文摘Sisay Z Berhe N Petros B 0,,03:1
11Effect of border planting of Eucalyptus citriodora Hook. on the growth and biomass production performance of Cymbopogon winterianus Jowitt ex Bor Grass at Wondo Genet,Southern Ethiopia显示文摘The use of Eucalyptus trees, in association with other plants, has the potential to reduce the growth of neighbouring plants or grasses by competing for resources or releasing allelochemicals that may cause other plants to grow slowly. Our purpose here is to assess whether border planting of Eucalyptus is harmful to the establishment,growth, and production of Cymbopogon winterianus at various distances from tree lines in the Wondo Genet Agricultural Research Center in Southern Ethiopia. Several factors were studied: growth performances and yield of aromatic grasses; soil properties, including total nitrogen,organic carbon, and moisture content; and plant leaf nutrient content(NPK) at various distances away from the Eucalyptus citriodora border line were studied. Chemical compositions of hydro-distilled essential oils obtained from selected C. winterianus grasses leaves were analysed by gas chromatography. Plant height, biomass yield, amount of essential oil yield, and essential oil composition all were significantly affected due to Eucalyptus effect in the first10-m distance as compared to beyond 10 m from the tree border line. There were increases in soil total nitrogen,organic carbon, and moisture content with decreasing distances to the Eucalyptus tree border. The result of plant leaf nutrient content(NPK) differed across treatment and distance. The pot experiment(15 cm 9 20 cm), shoot length,and number of leaves of aromatic plants varied in the degree of inhibition based on the concentration of the aqueous extract. Significantly higher inhibitions of the shoot length and number of leaf parameters were observed when using 25% fresh leaf extract compared to other extract levels.Berhanu Girma Sisay Feleke Abdu Abdulkadir 2019Journal of Forestry Research2019,30,2:0
12Signatures of positive selection for local adaptation of African native cattle populations:A review显示文摘Cattle are central to the lives and diverse cultures of African people.It has played a crucial role in providing valuable protein for billions of households and sources of income and employment for producers and other actors in the livestock value chains.The long-term natural selection of African cattle typically signals signatures in the genome,contributes to high genetic differentiations across breeds.This has enabled them to develop unique adaptive traits to cope with inadequate feed supply,high temperatures,high internal and external parasites,and diseases.However,these unique cattle genetic resources are threatened by indiscriminate cross-breeding,breed replacements with exotic cosmopolitan breeds,and climate change pressures.Although there are no functional genomics studies,recent advancements in genotyping and sequencing technologies have identified and annotated limited functional genes and causal variants associated with unique adaptive and economical traits of African cattle populations.These genome-wide variants serve as candidates for breed improvement and support conservation efforts for endangered cattle breeds against future climate changes.Therefore,this review plans to collate comprehensive information on the identified selection footprints to support genomic studies in African cattle to confirm the validity of the results and provide a framework for further genetic association and QTL fine mapping studies.Wondossen AYALEW WU Xiao-yun Getinet Mekuriaw TAREKEGN CHU Min LIANG Chun-nian Tesfaye SISAY TESSEMA YAN Ping 2023Journal of Integrative Agriculture2023,22,7:0
13埃塞俄比亚西南地区眼外伤类型和预后因素的回顾性研究(英文)显示文摘目的:探究埃塞俄比亚西南部的眼外伤类型、严重程度和预后因素。方法:回顾性研究。选取2009-04/09就诊于季马大学专科医院的眼外伤患者纳入本研究。所有患者均进行详细诊断,并接受全面眼科检查。SPSS 13.0进行数据分析,P<0.05表示差异有统计学意义。结果:眼外伤总患病率为3.03%。近99%的眼外伤为机械性损伤。多数眼外伤(53.2%)与工作相关,这些患者受伤时均未使用眼部防护装置。在170例眼外伤中,57.6%为闭合性眼外伤,42.4%为开放性眼外伤。闭合性眼外伤较开放性眼外伤的损伤程度较低,且有明显较好的视力预后(P<0.05)。最终视力和就诊时视力与从诊断到手术的时间间隔明显相关(P<0.05)。眼外伤致单眼失明患者59例(34.3%)。就诊晚、就诊时视力差、开放性眼外伤和并发症是导致低视力的危险因素。结论:大多数眼外伤发生在工作场所,且有较大比例的眼外伤患者发展为单眼失明。为预防严重的眼外伤,应在家中和工作场所普及眼部健康教育知识并做好安全防护措施。Sisay Bekele Yeshigeta Gelaw 2016国际眼科杂志2016,16,5:0
14地球化学块体法在埃塞俄比亚铜矿资源评价中的应用显示文摘低密度地球化学填图具有采样水系级别高、工作覆盖面积广阔的特征,可有效追溯具有高金属含量的地球化学块体。本次研究以埃塞俄比亚1∶100万低密度地球化学填图数据为基础,通过对原始水系沉积物中Cu测试数据处理后,应用迭代剔除的方法,计算得出Cu的异常下限值为37×10^(-6)。在此基础上,以37×10^(-6)、42×10^(-6)、47×10^(-6)、52×10^(-6)、59×10^(-6)、66×10^(-6)作为分级间隔,共圈定出地球化学块体3个、区域异常2个。通过参考相同成矿带中铜矿勘查研究程度较高的地球化学块体中已知铜矿床储量,计算出研究区的Cu块体成矿率为0.055%。本次以1000 m岩块厚度估算出研究区内Cu的资源量为260万t。结合区域成矿地质条件分析,确定2号、3号、4号地球化学块体所在区域可作为开展进一步详细勘查工作的重点成矿远景区。向文帅 白洋 姜军胜 雷义均 HUNDIE Melka SISAY Degu 张元培 吴颖 郑雄伟 2023物探与化探2023,47,4:0
15地球化学块体法在埃塞俄比亚金矿资源评价中的应用显示文摘低密度地球化学填图具有采样水系沉积物级别高,工作覆盖区域面积广阔的特征,适合应用地球化学块体法进行大空间尺度的矿产资源潜力评价,本次研究以埃塞俄比亚1∶100万低密度地球化学填图数据为基础,应用地球化学块体法,以埃塞俄比亚的优势矿种Au为研究对象,结合区域成矿地质背景,对研究区金矿资源潜力进行了评价并划定成矿远景区。数据结果显示:Au元素的异常下限值为1.55 ng/g。在此基础上,分别以1.55 ng/g、1.95 ng/g、2.46 ng/g、3.09 ng/g、3.89 ng/g、4.90 ng/g作为分级间隔,共圈定出地球化学块体6个,区域异常4个。根据研究区已知金矿床储量,计算出Au的成矿率为0.06%。本次以1000 m岩块厚度计算出研究区Au的总供应量565537 t,并估算出研究区内Au的资源量为339.18 t。其中1号地球化学块体、3号地球化学块体所在1∶25万图幅区域可作为进一步详细勘查工作的重点成矿远景区,2号地球化学块体、4号地球化学块体、5号地球化学块体及Ⅲ号区域异常所在的1∶25万图幅区域可作为次重点成矿远景区。白洋 向文帅 姜军胜 HUNDIE Melka SISAY Degu 张元培 吴颖 2022中国矿业2022,31,S01:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费