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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 438 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
AAS Open Research     Open Access   (Followers: 2)
ABC Journal of Advanced Research     Open Access  
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 20)
Acta Materialia Transilvanica     Open Access  
Acta Nova     Open Access   (Followers: 1)
Acta Scientifica Malaysia     Open Access  
Acta Scientifica Naturalis     Open Access   (Followers: 3)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 13)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 10)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access   (Followers: 1)
Advances in Science and Technology     Full-text available via subscription   (Followers: 17)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 8)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 2)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 4)
American Academic & Scholarly Research Journal     Open Access   (Followers: 6)
American Journal of Applied Sciences     Open Access   (Followers: 27)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 15)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Apuntes de Ciencia & Sociedad     Open Access  
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 6)
Archives of Current Research International     Open Access  
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 6)
ARPHA Proceedings     Open Access   (Followers: 4)
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access   (Followers: 1)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Journal of Advanced Research and Reports     Open Access   (Followers: 2)
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 2)
Asian Journal of Scientific Research     Open Access   (Followers: 3)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 7)
Australian Field Ornithology     Full-text available via subscription   (Followers: 4)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 7)
Avances en Ciencias e Ingeniería     Open Access  
AZimuth     Full-text available via subscription   (Followers: 2)
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 3)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 10)
Berkeley Scientific Journal     Full-text available via subscription  
BIBECHANA     Open Access   (Followers: 2)
BibNum     Open Access  
Bilge International Journal of Science and Technology Research     Open Access   (Followers: 1)
Bioethics Research Notes     Full-text available via subscription   (Followers: 16)
Bistua : Revista de la Facultad de Ciencias Básicas     Open Access  
Black Sea Journal of Engineering and Science     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Butlletí de la Institució Catalana d'Història Natural     Open Access  
Central European Journal of Clinical Research     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia & Natura     Open Access   (Followers: 1)
Ciencia Amazónica (Iquitos)     Open Access   (Followers: 1)
Ciencia en Desarrollo     Open Access   (Followers: 2)
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Ciencia y Tecnología     Open Access  
Ciencia, Docencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 2)
CienciaUAT     Open Access   (Followers: 1)
Citizen Science : Theory and Practice     Open Access   (Followers: 1)
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Communications in Applied Sciences     Open Access  
Comprehensive Therapy     Hybrid Journal   (Followers: 3)
Comunicata Scientiae     Open Access   (Followers: 1)
ConCiencia     Open Access  
Conference Papers in Science     Open Access   (Followers: 2)
Configurations     Full-text available via subscription   (Followers: 10)
COSMOS     Hybrid Journal  
Crea Ciencia Revista Científica     Open Access   (Followers: 3)
Cuadernos de Investigación UNED     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 15)
Current Research in Geoscience     Open Access   (Followers: 8)
Dalat University Journal of Science     Open Access  
Data     Open Access   (Followers: 4)
Data Curation Profiles Directory     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Dharmakarya     Open Access  
Diálogos Interdisciplinares     Open Access  
Digithum     Open Access   (Followers: 2)
Discover Sustainability     Open Access   (Followers: 3)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Elkawnie : Journal of Islamic Science and Technology     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access   (Followers: 1)
Epiphany     Open Access   (Followers: 4)
Episteme Transversalis     Open Access  
Ergo     Open Access  
Estação Científica (UNIFAP)     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 6)
Ethiopian Journal of Science and Technology     Open Access  
Ethiopian Journal of Sciences and Sustainable Development     Open Access   (Followers: 6)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 12)
European Scientific Journal     Open Access   (Followers: 10)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 2)
Experimental Results     Open Access  
Extensionismo, Innovación y Transferencia Tecnológica     Open Access   (Followers: 3)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access  
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 373)
Frontiers for Young Minds     Open Access  
Frontiers in Climate     Open Access   (Followers: 3)
Frontiers in Science     Open Access   (Followers: 1)
Futures & Foresight Science     Hybrid Journal   (Followers: 4)
Gaudium Sciendi     Open Access   (Followers: 1)
Gazi University Journal of Science     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Global Journal of Science Frontier Research     Open Access   (Followers: 2)
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access  
Himalayan Journal of Science and Technology     Open Access   (Followers: 1)
Hoosier Science Teacher     Open Access  
Impact     Open Access   (Followers: 2)
Indian Journal of History of Science     Hybrid Journal  
Indonesian Journal of Fundamental Sciences     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 4)
Indonesian Journal of Science and Technology     Open Access  
Ingenieria y Ciencia     Open Access   (Followers: 1)
Innovare : Revista de ciencia y tecnología     Open Access  
Instruments     Open Access  
Integrated Research Advances     Open Access  
Interciencia     Open Access   (Followers: 1)
Interface Focus     Full-text available via subscription  
International Annals of Science     Open Access  
International Archives of Science and Technology     Open Access  
International Journal of Academic Research in Business, Arts & Science     Open Access   (Followers: 2)
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Advancement in Education and Social Sciences     Open Access   (Followers: 1)
International Journal of Advances in Engineering, Science and Technology     Open Access   (Followers: 3)
International Journal of Applied Science     Open Access  
International Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
International Journal of Computational and Experimental Science and Engineering (IJCESEN)     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 12)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 5)
International Journal of Innovative Research in Social and Natural Sciences     Open Access   (Followers: 2)
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Recent Contributions from Engineering, Science & IT     Open Access   (Followers: 1)
International Journal of Research in Science     Open Access   (Followers: 2)
International Journal of Science & Emerging Technologies     Open Access   (Followers: 1)
International Journal of Sciences : Basic and Applied Research     Open Access  
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 7)
International Letters of Social and Humanistic Sciences     Open Access   (Followers: 1)
International Review of Applied Sciences     Open Access  
InterSciencePlace     Open Access   (Followers: 1)
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigación Valdizana     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access  
Issues in Science & Technology     Free   (Followers: 7)
Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze     Open Access  
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription   (Followers: 2)
Journal for New Generation Sciences     Open Access   (Followers: 3)
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 12)
Journal of Advanced Research     Open Access   (Followers: 3)
Journal of Al-Qadisiyah for Pure Science     Open Access   (Followers: 1)
Journal of Analytical Science & Technology     Open Access   (Followers: 6)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 3)
Journal of Big History     Open Access   (Followers: 3)
Journal of Composites Science     Open Access   (Followers: 3)
Journal of Critical Thought and Praxis     Open Access   (Followers: 2)
Journal of Deliberative Mechanisms in Science     Open Access  
Journal of Diversity Management     Open Access   (Followers: 6)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of Integrated Science and Technology     Open Access  
Journal of Interaction Science     Open Access   (Followers: 1)
Journal of Kerbala University     Open Access   (Followers: 1)
Journal of King Saud University - Science     Open Access   (Followers: 1)
Journal of Law, Information and Science     Full-text available via subscription   (Followers: 20)
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Natural Sciences and Mathematics Research     Open Access  
Journal of Natural Sciences Research     Open Access   (Followers: 4)
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access   (Followers: 1)
Journal of Science (JSc)     Open Access  

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Ethiopian Journal of Education and Sciences
Number of Followers: 6  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1998-8907
Published by African Journals Online Homepage  [263 journals]
  • The First Ground-Based Measurement of Atmospheric Carbonyl Sulphide over
           Addis Ababa (Ethiopia)

    • Authors: Milkessa G. Homa, Gizaw M. Tsidu, Tamirat A. Desta
      Pages: 1 - 18
      Abstract: Measurement of Carbonyl sulphide is very crucial to estimate the sulfur budget and is used as a tracer for the carbon cycle. Its simultaneous consumption with CO2 during photosynthesis by plant uptake makes it an ideal candidate for the partitioning of photosynthesis from respiration. This research provides the first ground-based abundance of OCS from a high-resolution Fourier Transform Infrared spectrometer over Addis Ababa (9o1’N, 38o76’E, an altitude of 2443 m.a.s.l.). We used PROFFIT95 to retrieve the vertical profile, average tropospheric and stratospheric mixing ratios, and column amount from the solar absorption spectra of OCS. Analysis of random and systematic error to retrieval shows that the total error contribution due to atmospheric and auxiliary parameters is less than 10%. The tropospheric and stratospheric average VMR in our site is 0.488 ppbv and 0.230 ppbv, respectively, with deviation from the global mean by 2.4% for tropospheric mixing ratio. The hourly variation of OCS particularly on 14, March 2010 shows slight accession from mid-morning to noon and reduction in the afternoon with a change in VMR of 0.019 ppbv. The tropospheric volume mixing ratio (in the unit of parts per billion by volume) and total column amount time series result from May 2009 to April 2010 show seasonal variation with maximum (0.60) in May and June, and minimum (0.37) in December and January. The total column amount reaches up to 8.5X1019 molecules/m2. The correlation between stratospheric tropopause level and the accession of stratospheric OCS level during hot season worth detail investigation to understand the variation of OCS besides taking long term measurement for trend analysis.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Education for Borena Pastoralist Community Children in Ethiopia: Practices
           and Challenges

    • Authors: Ambissa Kenea Boru
      Pages: 19 - 32
      Abstract: The study attempted to examine the practices and challenges of education for Borena pastoralist communities' children. The theoretical conception of the study is rooted in 'education as a right for the children' and the 'indigenous epistemology' perspectives. The concurrent nested strategy of mixed research design with data collected from multiple sources using multiple tools has been used. Results of the study indicated that the pastoralist community members see schooling in terms of the livestock possession and herding: where schooling children means losing livestock and losing the livestock means losing the very self of the community. The community adopted various adult-centric solutions such as rotational enrollment and turn-based attendance which are not commensurate with the children’s right concerns. The opportunity cost of schooling tended to define it all. Children's right to education is not even part of the discourse. The finding implicates that there is a need to diversify the education delivery approach and pay attention to the relevance of the system to the pastoralist community. Education development should be conceptualized within the broader pastoralist area development agenda. And children's right to education need to be popularized among the pastoralist community.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Block Procedure for Solving Stiff First Order Initial Value Problems Using
           Chebyshev Polynomials

    • Authors: Seid Yimer, Alemayehu Shiferaw, Solomon Gebregiorgis
      Pages: 33 - 44
      Abstract: In this paper, discrete implicit linear multistep methods in block form for the solution of initial value
      problems was presented using the Chebyshev polynomials. The method is based on collocation of the
      differential equation and interpolation of the approximate solution of power series at the grid points.
      The procedure yields four consistent implicit linear multistep schemes which are combined as
      simultaneous numerical integrators to form block method. The basic properties of the method such as
      order, error constant, zero stability, consistency and accuracy are investigated. The accuracy of the
      method was tested with two stiff first order initial value problems. The results were compared with a
      method reported in the literature. All numerical examples were solved with the aid of MATLAB
      software after the schemes are developed using MAPLE software and the results showed that our
      proposed method produces better results.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Variations in Tasting Phenylthiocarbamide (PTC) in Selected Individuals
           from Ethiopia: Implications for Human Health

    • Authors: Solomon Balemi, Endashaw Bekele
      Pages: 45 - 55
      Abstract: The present study aimed to examine the PTC tasting ability in selected individuals from Ethiopia. It involved 465 participants representing four ethnic groups. A total of 69 individuals from Amhara (30 females and 39 males), 52 from Agnuak (3 females and 49 males), 59 from Nuer and 285 (60 females and 225 males) from Oromo were recruited. The investigation was made using a series of graded concentrations of PTC dissolved in pure water and the results were recorded. The participants were analyzed for the distribution of tasters and non-tasters for PTC. The frequency of dominant and recessive alleles of PTC gene was calculated using Hardy-Weinberg methods. The result showed that the frequency of tasters (82.80%) were significantly higher than that of non-tasters (17.20%) in all populations. Likewise, frequency of tasters among males (83.06%) and females (82.61%) were significantly higher than the frequency of non-taster males (16.94%) and females (17.39%). This shows that PTC tasting ability varies as a function of sexes. In all populations, the frequency of T allele (0.59) is higher than the frequency of t allele (0.41). Recognition threshold for PTC in 465 participants of both sexes were determined (at 8 and 9 solutions) and indicated that the taste ability distribution is bimodal. Based on the present data on diet, an association between the ability to taste PTC and food preferences have been observed among the studied populations. With this regard, further comprehensive study on various populations is needed, which could have significant public health importance.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Tetracyclic Triterpenes from the Stem Bark of Vernonia biafrae and
           Evaluation of its Antimicrobial Activity

    • Authors: Teshale Zemene, Melaku Meshesha, Dereje Denu, Negera Abdissa
      Pages: 56 - 64
      Abstract: In the search for bioactive metabolites from Ethiopian medicinal plants, two tetracyclic triterpenes; spinasterol (1) and shionone (2) along with cetyl alcohol (3) were isolated from the acetone extract of the stem bark of Vernonia biafrae, a medicinal plants widely used for the treatment of infectious diseases. Column chromatographic separations and Sephadex LH-20 gel filtration were employed for the isolation of the pure compounds. The compounds were characterized by spectrometric (NMR and mass) analyses and comparison with literature data. This is the first report of compound 2 and 3 from the genus Vernonia. The extracts and the isolated compounds were evaluated for their antimicrobial activities against both bacterial and fungal test strains and exhibited comparable activities with the standard antibiotics. The highest activity was observed for acetone extract (23.73 0.10 mm) and compound 2 (23.72 0.30 mm) against Staphylococcus aureus. Whereas, the rest showed moderate to low inhibitory activities against the test strains. The finding could be used for comprehensive evaluations of the phytochemicals for their microbial activities and also support the claim that the plant V. biafrae is used for the treatment of microbial diseases.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Typology and Structure of Basic-level Activities in Afaan Oromoo

    • Authors: Eba Teresa Garoma, Baye Yimam
      Pages: 65 - 89
      Abstract: In this study, we examined the typology and structure of basic-level activity, which is one of the five eventuality types (the others being stative, achievement, semelfactive and accomplishment) in Afaan Oromoo. Accordingly, we use the three temporal features (dynamicity, durativity and atelicity) and verb constellations of clauses to identify and describe each subclass of the situation aspect. These are claimed to denote the state-of-affair based on perceptual and cognitive abilities. Purposive sampling technique was used to collect data from written web corpora of different genres. These corpora were developed by The HaBit Project and Ethiopian Language Technology Group in 2016. Afaan Oromoo textbooks of grades 9-12 were also used as data sources. On the assumption that activities are dynamic, durative and atelic which imply no inherent final points, we have identified five subcategories: motion, emission, consumption, creation and active perception. The verbs in these subtypes of activities co-occur with agentive, non-agentive and self-agentive arguments to show various semantic readings. Regarding logical structure, we have proposed [DO’ (x, [Pred’ (x) or (x, y)])] as the general logical structure of the situation. In the structure, the prime DO’ represents the logical operator, Pred’ is to any activity verb, ‘x’ is agent, effector or experiencer, and ‘y’ is a theme, patient or stimulus. However, ‘x’ is the theme for one-place predicates. From the findings, we suggest that the computational aspect of logical and argument structures should be formulated to advance Afaan Oromoo a step towards natural language processing technology.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
  • Determination of Selected Pesticide Residues in Diga Water Reservoir,
           Eastern Wollega Zone, Ethiopia

    • Authors: Senbeto Debelo, Teshome Tolcha, Tesfa Bedassa
      Pages: 90 - 98
      Abstract: This study aimed to assess the status of diazinon, chlorothalonil, Malathion and chloropyrifos in Diga water reservoir, located in Diga district, Eastern Wollega Zone, Ethiopia. It serves as Nekemte City municipal tap water reservoir. Salting-out assisted liquid-liquid extraction (SAALE) was used for extraction and/or preconcentration of the target analytes before their determination by gas chromatography mass spectrometry (GC-MS). The method showed acceptable linearity (R2) in the range of 0.996 to 0.999. The limit of detection (LOD) of the method ranged from 1.38 to 4.92 μg L−1and limit of quantification (LOQ) ranged from 4.60 to 16.40 μg L−1. The relative recovery ranged from 80.34 % to 100.32%. Analysis of the collected real samples indicates that the water samples were not polluted with residues of diazinon, chlorothalonil, Malathion and chlorpyrifos or contain below the LOD of the method.
      PubDate: 2020-11-11
      Issue No: Vol. 15, No. 2 (2020)
       
 
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