Siyum Shewakena Beshahwored, Martin Weber, Chien‐Chieh Hu, Juin‐Yih Lai, Tai‐Shung Chung,
The molecular compatibility between polybenzimidazole (PBI) and sulfonated polyphenylsulfone (sPPSU) and their blend membranes for herbicide removal in water reuse and for drug separation in organic solvent nanofiltration (OSN) have been investigated as a function of sulfonation degree in sPPSU. Flat sheet membranes cast from PBI-sPPSU blends with a mass ratio of 1:1 were prepared and then crosslinked by trimesoyl chloride (TMC) at room temperature. The blend made of PBI and 12.7 mol% sPPSU showed high ...
Tópico(s): Fuel Cells and Related Materials
2023 - Elsevier BV | Journal of Membrane Science
Negussie Siyum, Almaz Giziew, Azanaw Abebe,
This study was conducted in Meket district of Amhara National Regional State in northern Ethiopia. Cross-sectional data was used for the study, which was collected from 214 randomly selected agricultural households using a structured interview protocol. With the help of the double hurdle model, factors were identified that influence the probability of adoption and the intensity of use of improved bread wheat varieties and associated technologies in the study area. The first hurdle of the model suggests ...
Tópico(s): Microfinance and Financial Inclusion
2022 - Elsevier BV | Heliyon
Siyum Shewakena Beshahwored, Yueh‐Han Huang, Zelalem Gudeta Abdi, Chien‐Chieh Hu, Tai‐Shung Chung,
The chemical, pharmaceutical, and edible oil industries have employed enormous amounts of organic solvents to produce medicines, chemicals, and other goods. In order to recycle these valuable organic solvents, organic solvent nanofiltration (OSN) is crucial. However, choosing the optimal cross-linker is vital for producing membranes with improved performance and chemical resistance. In this study, integrally skinned polybenzimidazole (PBI) flat membranes for OSN were studied through a covalent modification ...
Tópico(s): Extraction and Separation Processes
2022 - Elsevier BV | Journal of Membrane Science
Abstract This review attempts to synthesize the available literature on tropical dry forests and their dynamics in the context of climate change and thereby identifies possible gaps and priority areas for further research and management endeavors. Tropical dry forests (TDFs) occur in dryland environments, which are characterized by prolonged periods of dry months. They experience distinct seasonality and high inter-annual variability in climatic variables, particularly rainfall. Despite the enormous ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2020 - Springer Nature | Ecological Processes
Zenebe Girmay Siyum, J. O. Ayoade, M. A. Onilude, Motuma Tolera Feyissa,
Climate-induced challenge remains a growing concern in the dry tropics, threatening carbon sink potential of tropical dry forests. Hence, understanding their responses to the changing climate is of high priority to facilitate sustainable management of the remnant dry forests. In this study, we examined the long-term climate-growth relations of main tree species in the remnant dry Afromontane forests in northern Ethiopia. The aim of this study was to assess the dendrochronological potential of selected ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2019 - Springer Science+Business Media | Forest Ecosystems
Berhe Beyene Gebrezgiabher, Teklehaymanot Huluf Abraha, Etsay Hailu, Hailay Siyum, Getachew Mebrahtu, Berihu Gidey, Mebrahtu Abay, Solomon Hintsa, Teklit Angesom,
Depression is consistently associated with increased risk of Human Immunodeficiency Virus infection and poor antiretroviral treatment adherence. Though many factors have been reported as determinant factors of depression, site-specific evidence is needed to identify factors associated with depression among adults on antiretroviral treatment.An institution based cross-sectional study was carried out from March to May 2015 among 411 adults HIV/AIDS patients on ART clinic follow-up. Participants were ...
Tópico(s): Family Caregiving in Mental Illness
2019 - Hindawi Publishing Corporation | Depression Research and Treatment
Teklehaymanot Huluf Abraha, Hailay Siyum Belay, Getachew Mebrahtu Welay,
Increased access to contraceptive methods has been established as a cost-effective strategy for developing countries to reduce maternal and child mortality. Intentions to contraceptive uptake appear to be best predictors of actual contraceptive practice than the unmet need. However, intention to contraceptive use in Ethiopia particularly among postpartum women is not well assessed. Therefore, the objective of this study was to assess intention to use modern contraceptive and to identify factors ...
Tópico(s): Adolescent Sexual and Reproductive Health
2018 - BioMed Central | Reproductive Health
Kidane Gebrecherkos, Brhane Gebremariam, Alemayehu Worku, Hailay Siyum, Gizienesh Kahsay, Mebrahtu Abay,
Millions of women want to delay or avoid pregnancy, but they are not using contraception, especially in refugee settings. Due to lack of contraception, one fifth of reproductive age group women suffered from unwanted pregnancy and unsafe abortion, which accounted for 78% of maternal mortality in refugee camps. Therefore, the aim of this study was to assess the prevalence of unmet need for modern contraception and its associated factors among reproductive age group women in Eritrean refugee camps, ...
Tópico(s): Migration, Health and Trauma
2018 - BioMed Central | BMC Research Notes
Eyasu Siyum Buda, Lolemo Kelbiso Hanfore, Robera Olana Fite, Alula Seyum Buda,
Hypertension is one of the leading causes of disability and death in both developed and developing countries that need urgent strategies to implement interventions that control it. Appropriate lifestyle changes often called non-pharmacological approaches that often overlooked are the corner stone of the prevention and control of hypertension. The aim of this study is to assess the practice of lifestyle modifications and associated factors among diagnosed hypertensive patients in Durame and Nigist ...
Tópico(s): Obesity, Physical Activity, Diet
2017 - BioMed Central | Clinical Hypertension
Negash Hadera Gebrekirstos, Birhanu Demeke Workneh, Yosef Sibhatu Gebregiorgis, Kebede Haile Misgina, Negassie Berhe Weldehaweria, Meresa Gebremedhin Weldu, Hailay Siyum Belay,
Non-prescribed antimicrobial use and their resistance are among the main public health problems, worldwide. In Ethiopia, particularly in the northern part, the magnitude of non-prescribed antimicrobial use and its major determinants is not yet well known. Thus, this study was done to assess the magnitude of non-prescribed anti-microbial use and associated factors among customers in drug retail outlet in Central Zone, Tigray, Ethiopia. A drug retail outlet based cross-sectional study was conducted ...
Tópico(s): Patient Satisfaction in Healthcare
2017 - BioMed Central | Antimicrobial Resistance and Infection Control
... out by participants in the seminar, ibid.; “Im siyum mifal” (With the end of the project), Tzror ...
Tópico(s): Middle East Politics and Society
2012 - Routledge | The Journal of Israeli History
Siyum Obsa, Ragea Dabsu, Eyasu Ejeta,
Mother to Child Transmission of HIV (MTCTH) is a major public health challenge in Ethiopia. Monitoring and evaluation of the rate of HIV transmission among infants born to HIV positive mothers is the major indicator to understand the performance of a national HIV control program. However, this is not well documented in Oromia Regional State, Ethiopia. A retrospective study was conducted in 43 health facilities at three Administrative Zones of Oromia Regional State, Ethiopia from November 2014 to ...
Tópico(s): HIV Research and Treatment
2018 - Elsevier BV | Egyptian Pediatric Association Gazette
Hadgu Gerensea, Awoke Kebede, Zeray Baraki, Hagos Berihu, Teklay Zeru, Eskedar Birhane, Dawit G her, Solomon Hintsa, Hailay Siyum, Gizenesh Kahsay, Gebreamlake Gidey, Girmay Teklay, Gebremeskel Mulatu,
In an effort to reduce infant mortality and morbidity, the World Health Organization and other technical partners developed the Integrated Management of Newborn and Childhood Illness (IMNCI). This study focuses on assessment of consistency and completeness of integrated management of neonatal and child hood illness in primary health care units.A total of 384 cases were taken from 3562 cases both from young infant registration (under-2 month old) and child registration (2 months-5 year old). Out of ...
Tópico(s): Neonatal Respiratory Health Research
2018 - BioMed Central | BMC Research Notes
Zinabu Hailu Siyum, Tassew Alemayehu Meresa,
Carissa spinarum L. is one of the wild plants that gives a fruit and it consumed by the peoples who are lived in the study areas without any knowledge of its nutrients. Thus, this research work was designed to explore the physicochemical properties and nutritional values of the Carissa spinarum L. fruits which were collected from two different geographical sites of Korem-Ofla wereda mainly Delesa and Maidokorem. The samples used for the study were randomly selected from the described sites, respectively, ...
Tópico(s): Botanical Research and Applications
2021 - Taylor & Francis | International Journal of Fruit Science
Biniyam Yisehak Menna, Henok Shiferaw, Atkilt Girma, Zenebe Girmay Siyum, Melaku Takele Tegene,
Tópico(s): Hydrology and Watershed Management Studies
2022 - Springer Science+Business Media | Theoretical and Applied Climatology
Gebru Eyasu Siyum, Tuemay Tassew,
Mitigation of climate change is one of the major environmental challenges facing the globe. In this context, homegarden agroforestry systems (HGAFs) have large potential for climate change mitigation. Therefore, this study was initiated to estimate the biomass and soil carbon stocks of HGAFs in relation to adjacent Natural Forest (NF). It also analyzed the relationship between woody species diversity, evenness and richness with biomass and soil carbon stocks. Three sites were purposely selected on ...
Tópico(s): Agroforestry and silvopastoral systems
2019 - | Asian Soil Research Journal
Gebru Eyasu Siyum, Tuemay Tassew, Abadi Gidey,
Tree planting on degraded lands play a key role in forest rehabilitation processes through afforestation and/or reforestation. Moisture harvesting structures (MHSs) has significant impact on seedling survivals at degraded lands. The objectives of this study were to investigate the impact of water harvesting techniques on seedling survival and growth performance of trees. Field experiments were conducted for two rainy seasons in southern Tigray, Atsela watershed. The experimental design followed was ...
Tópico(s): Agroforestry and silvopastoral systems
2019 - | Asian Journal of Research in Agriculture and Forestry
Claus G. Bang, Jakob F. Jensen, Emil O’Hanlon Cohrt, Lasse B. Olsen, Saba G. Siyum, Kim T. Mortensen, Tine Skovgaard, Jens Berthelsen, Liang Yang, Michael Givskov, Katrine Qvortrup, Thomas E. Nielsen,
We herein present broadly useful, readily available and nonintegral hydroxylamine linkers for the routine solid-phase synthesis of hydroxamic acids. The developed protocols enable the efficient synthesis and release of a wide range of hydroxamic acids from various resins, relying on high control and flexibility with respect to reagents and synthetic processes. A trityl-based hydroxylamine linker was used to synthesize a library of peptide hydroxamic acids. The inhibitory effects of the compounds ...
Tópico(s): Chemical Synthesis and Analysis
2017 - American Chemical Society | ACS Combinatorial Science
Abstract The purpose of the study was to assess the practices and challenges of urban land governance in the Tigrai Region. This study employed a concurrent nested design. Data were collected from 177 officeholders and customers through questionnaires. Besides, interviews were conducted with purposefully selected officeholders. The results of the data analysis were presented using mean, standard deviation, Pearson correlation, and logistic regression to see the relationship between the independent ...
Tópico(s): Land Rights and Reforms
2022 - Springer Science+Business Media | Journal of Management & Governance
Y.K. Levine, Einat Chetrit, Yahel Fishman, Yalfal Siyum, Moshe Rabaev, Alan Fletcher, Konstantin Tartakovsky,
This study presents an analysis of plasticizers and other additives in elastomers using several techniques to obtain relevant information for aging investigations. Thermogravimetric quantification of polymeric matrix, polymeric matrix char, carbon black, inorganic substances, plasticizers and other additives is commonly used. However, the thermogravimetric weight loss attributed to plasticizers and other additives contains additional components whose contribution to the weight loss has not been ...
Tópico(s): Polymer Nanocomposites and Properties
2023 - Elsevier BV | Polymer Testing
Atrsaw Anteneh Mihretie, Girmachew Siraw Misganaw, Negussie Siyum,
Tef is a major staple crop in Ethiopia and Eritrea. Many improved Tef varieties were released from the Ethiopian research institute in the past three decades. Information on the farmers’ adoption status and perception on released improved Tef technology have paramount importance for launching new and modifying Tef technology packages. However, such information is meager in Ethiopia. Therefore, this study was conducted to assess farmers’ status and perception of improved Tef technologies. A multistage ...
Tópico(s): Agronomic Practices and Intercropping Systems
2022 - Hindawi Publishing Corporation | Advances in Agriculture
Berihu Asgele Siyum, Mewcha Amha Gebremedhin,
This study attempted to explore the main influences of politics on teacher’s academic freedom and on the independence of academic institutions. The general objective of this study was assessing the impact of political party membership among teachers on their freedom in the study area. Nigste Saba is a model high school which is selected purposefully from the total three high schools in Adwa town. The study explored the influence difference made on the teachers who are members of the ruling political ...
Tópico(s): Educator Training and Historical Pedagogy
2015 - IISTE | Journal of Education and Practice
Fikadu Siyum Mekonon, Molla Tefera, Shewarega Yared, Abraham Getahun,
Wheat is one of the major cereal crops of the world ranking second after rice both in area coverage and production among cereal grains.It is also an important cereal crop in Ethiopia in terms of cultivated area, production and consumption, which is the fourth most widely grown crop after teff, maize, and sorghum.It has great importance in the human diet, contributing as a direct source of energy, protein, vitamins, minerals and fiber.However, this cereal crop is vulnerable to degradation by aflatoxins ...
Tópico(s): Potato Plant Research
2022 - De Gruyter Open | Acta Chemica Iasi
Siyum Shewakena Beshahwored, Kai Yu Wang, Chien‐Chieh Hu, Tai‐Shung Chung,
The presence of heavy metal ions in water sources poses significant risks to both human health and environments; hence, it is critical to develop effective and trustworthy removal techniques. This research aims to fabricate a novel hollow fiber membrane consisting of mixed-charged characteristics via the formation of a positively charged thin film composite (TFC), followed by the infiltration of 4-sulfocalix [4] arene (SCA4). The formation, architecture and separation performance of the mixed-charged ...
Tópico(s): Graphene and Nanomaterials Applications
2024 - Elsevier BV | Journal of Membrane Science
Zinabu Hailu Siyum, Thanh Tung Pham, Eszter Vozáry, Tímea Kaszab, Lien Le Phuong Nguyen, László Baranyai,
Abstract Banana drying is an important process that used to extend the shelf life and increase the marketability of the dried banana. However, this process can lead to changes in weight loss, firmness, and color, which may influence consumer acceptance. As a result, it is crucial to monitor these changes to maintain the desired quality. Therefore, the aim of this study was to assess the quality of sliced bananas during the drying process by simultaneously monitoring their optical and physical properties ...
Tópico(s): Food Drying and Modeling
2023 - Springer Science+Business Media | Journal of Food Measurement & Characterization
Cyclic Voltammetry has a multipurpose electroanalytical technique for the study of electroactive species, the method displays redox behaviour of chemical species inside a wide range potential. The current at the working electrode is observed as a three-cornered excitation potential is applied to the electrode. The purpose of this paper was to determine the diffusion coefficient (D) of the K3 [Fe(CN)6 ] and uric acid; electrochemical nature of K3 [Fe(CN)6 ] and uric acid, effects of varying the concentrations ...
Tópico(s): Advanced Chemical Sensor Technologies
2021 - OMICS Publishing Group | Journal of Nutrition & Food Sciences
Yemane Kahsay Berhe, Kiros Meles Aymut, Berhane Lema Gebremariam, Haftay Gebreyesus Gebreziher, Zinabu Hailu Siyum,
Tópico(s): Biological Control of Invasive Species
2020 - Gupta Publications | International Journal of Botany Studies
Endalkachew Baye, Zebiba Ebirahim, Naol Kasahun, Nebiyat Wasyihun, Kebede Siyum, Dinknesh Yachiso, Zenash Tiruneh, B. Fekadu,
The depth of sowing is important in maximizing the potential of seedling emergence and crop growth. Too shallow sowing results in poor germination due to inadequate soil moisture at the top soil layer. On the other hand, deep sowing can also significantly reduce crop emergence and growth. It would create the emergence seedling had less performance and productive which means when it is too deep is not able lift its cotyledon above the soil, soil born diseases and insects have damage their seedling. ...
Tópico(s): Legume Nitrogen Fixing Symbiosis
2020 - Science Publishing Group | American Journal of Agriculture and Forestry
This study examines the arrival of the (trans)national investment companies in Gambela Regional State of Ethiopia where the Anyuaa and Nuer ethnic groups struggle over land and natural resources. The study aimed to explore the implication of the convergence of the large-scale land acquisition and resource based local conflict towards the local community in the region. A qualitative research approach was taken to carry out the study. Accordingly, findings from in-depth qualitative interviews, focus ...
Tópico(s): Land Rights and Reforms
2017 - International journal of multicultural and multireligious understanding | International Journal of Multicultural and Multireligious Understanding
Ashebir Awoke, Yared Siyum, Derbew Awoke, Habtamu Gebremedhin, Afework Tadesse,
Ethiopia is recognized as a significant center of origin for a wide variety of plant species, particularly those with medicinal properties. A substantial segment of the population across the nation depends on these therapeutic plants for their primary healthcare needs. Many communities, both rural and urban, engage in traditional medicine practices, passing down their knowledge orally from one generation to the next. Consequently, this study was undertaken to record the traditional medicinal plants ...
Tópico(s): Essential Oils and Antimicrobial Activity
2024 - BioMed Central | Journal of Ethnobiology and Ethnomedicine