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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
AAS Open Research     Open Access   (Followers: 1)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 18)
Acta Materialia Transilvanica     Open Access  
Acta Nova     Open Access   (Followers: 1)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
Acta Scientifica Naturalis     Open Access   (Followers: 4)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 13)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 6)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 18)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 7)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 3)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 8)
American Academic & Scholarly Research Journal     Open Access   (Followers: 4)
American Journal of Applied Sciences     Open Access   (Followers: 21)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 13)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 1)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Apuntes de Ciencia & Sociedad     Open Access  
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 5)
Archives of Current Research International     Open Access  
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 1)
ARPHA Proceedings     Open Access  
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Asian Journal of Scientific Research     Open Access   (Followers: 2)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 5)
Australian Field Ornithology     Full-text available via subscription   (Followers: 2)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 6)
Avrasya Terim Dergisi     Open Access  
Bangladesh Journal of Scientific Research     Open Access  
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 11)
BIBECHANA     Open Access  
Bilge International Journal of Science and Technology Research     Open Access  
Bioethics Research Notes     Full-text available via subscription   (Followers: 16)
BJHS Themes     Open Access  
Black Sea Journal of Engineering and Science     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
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  
Chain Reaction     Full-text available via subscription  
Ciencia Amazónica (Iquitos)     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Ciencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 1)
CienciaUAT     Open Access  
Citizen Science : Theory and Practice     Open Access   (Followers: 3)
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Communications in Applied Sciences     Open Access  
Comunicata Scientiae     Open Access  
ConCiencia     Open Access  
Conference Papers in Science     Open Access  
Configurations     Full-text available via subscription   (Followers: 11)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access  
Cuadernos de Investigación UNED     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 13)
Current Research in Geoscience     Open Access   (Followers: 5)
Dalat University Journal of Science     Open Access  
Data     Open Access   (Followers: 4)
Data Curation Profiles Directory     Open Access   (Followers: 9)
Dhaka University Journal of Science     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: 7)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Epiphany     Open Access   (Followers: 1)
Estação Científica (UNIFAP)     Open Access  
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 5)
Ethiopian Journal of Science and Technology     Open Access  
Ethiopian Journal of Sciences and Sustainable Development     Open Access  
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Scientific Journal     Open Access   (Followers: 5)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
Experimental Results     Open Access   (Followers: 1)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access   (Followers: 2)
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 237)
Frontiers for Young Minds     Open Access  
Frontiers in Climate     Open Access   (Followers: 4)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access  
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Gaudium Sciendi     Open Access  
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: 1)
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  
History of Science and Technology     Open Access   (Followers: 5)
Hoosier Science Teacher     Open Access  
Impact     Open Access   (Followers: 1)
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: 2)
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  
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  
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
International Journal of Computational and Experimental Science and Engineering (IJCESEN)     Open Access  
International Journal of Culture and Modernity     Open Access   (Followers: 2)
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Engineering, Technology and Natural Sciences     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 4)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 1)
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Recent Contributions from Engineering, Science & IT     Open Access  
International Journal of Research in Science     Open Access   (Followers: 1)
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 8)
International Letters of Social and Humanistic Sciences     Open Access  
International Science and Technology Journal of Namibia     Open Access   (Followers: 1)
International Scientific and Vocational Studies Journal     Open Access  
InterSciencePlace     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 8)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 1)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 10)
Journal of Advanced Research     Open Access   (Followers: 2)
Journal of Al-Qadisiyah for Pure Science     Open Access  
Journal of Alasmarya University     Open Access  
Journal of Analytical Science & Technology     Open Access   (Followers: 5)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Big History     Open Access   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Journal of Diversity Management     Open Access   (Followers: 4)
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 King Saud University - Science     Open Access  
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Natural Sciences Research     Open Access   (Followers: 2)
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access  
Journal of Science (JSc)     Open Access  
Journal of Science and Engineering     Open Access   (Followers: 1)
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Science and Technology Policy Management     Hybrid Journal   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Journal of Science of the University of Kelaniya Sri Lanka     Open Access  
Journal of Scientific Research     Open Access   (Followers: 1)
Journal of Scientific Research and Reports     Open Access   (Followers: 1)
Journal of Scientometric Research     Open Access   (Followers: 21)
Journal of Shanghai Jiaotong University (Science)     Hybrid Journal  
Journal of Social Science Research     Open Access   (Followers: 2)
Journal of Taibah University for Science     Open Access  
Journal of the Asiatic Society of Bangladesh, Science     Open Access  
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of the History of Ideas     Full-text available via subscription   (Followers: 158)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of the National Science Foundation of Sri Lanka     Open Access  
Journal of the Royal Society of New Zealand     Hybrid Journal   (Followers: 48)
Journal of the South Carolina Academy of Science     Open Access  
Journal of Unsolved Questions     Open Access  
Jurnal Ilmiah Ilmu Terapan Universitas Jambi : JIITUJ     Open Access  
Jurnal Matematika, Sains, Dan Teknologi     Open Access  

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International Science and Technology Journal of Namibia
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2026-7673
Published by U of Namibia Homepage  [2 journals]
  • Data to support African ‘resistance’ to COVID-19 hypothesis
           are not available

    • Authors: Kazhila C. Chinsembu
      Pages: 1 - 4
      Abstract: More than two years since the first case was reported in Africa, COVID-19 still lurks on the African continent, shattering the hopes and livelihoods of millions of people. Although Africans are accustomed to infectious disease outbreaks, COVID-19 seems unique in its aetiology and impacts. Assertions that Africans were ‘resistant’ to COVID-19 in the first wave were put forward, but data to support the accuracy of these claims are not available. More research data are required to explain COVID-19 prevalence and interventions in African settings. Control of COVID-19 should not just be left to medical doctors. All experts, working in multi-disciplinary, inter-disciplinary, intra-disciplinary and trans-disciplinary (MIIT) teams, should be involved in finding solutions to COVID-19 in Africa. We urge all our readers and contributors to get vaccinated against COVID-19.
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Antimicrobial and anti-biofilm activities of Diospyros lycioides root,
           leaf and twig extracts against Staphylococcus aureus and Mycobacterium
           avium

    • Authors: S Kanyemba, S Walter, A Iikasha, R Bock
      Pages: 5 - 15
      Abstract: This study utilised the minimum inhibitory concentration (MIC) assay and the microtiter plate assay to investigate the antimicrobial and anti-biofilm activities of D. lycioides crude methanolic extracts against Staphylococcus aureus and Mycobacterium avium. Thin layer chromatography was used to qualitatively screen for the presence of phytochemical compounds in the plant methanol and aqueous extracts. Phytochemical analysis revealed the presence of all tested compounds in the methanol extracts, except for saponin. These included coumarin, triterpenoids, anthraquinone, tannins, alkaloids, steroids and flavonoids. On average steroids, tannins, triterpenoids and anthraquinones were the most abundant phytochemicals in both aqueous and methanol extracts, with the highest
      amounts observed in the methanol extracts. The minimum inhibitory concentration against M. avium occurred at 75mg/ml, 37.5mg/ml and 18.75mg/ml for the root, leaf and twig methanol extracts, respectively while for S. aureus all methanol extracts showed an MIC of 75mg/ml. The highest biofilm inhibition against S. aureus was due to the methanol extracts of D. lycioides leaves (57.2%) and roots (58.1%). However, the twig methanol extracts (57.8%) inhibited M. avium biofilm formation the most as compared to the leaf (25.6%) and root (35.3%) extracts. The leaf extracts (40.4%) were moderately active in eradicating S. aureus biofilms, whereas for M. avium
      the highest eradication activity was observed with the root extracts (35.6%).
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • A statistical modelling of the factors contributing to child labour in
           Namibia

    • Authors: Opeoluwa F Oyedele, Anna-Lisa Shilongo
      Pages: 16 - 25
      Abstract: Despite children not allowed to work by law in Namibia, child labour is still being practised in the country. In this paper, the multinomial logistic regression model was used to statistically examine the factors contributing to child labour in Namibia using the 2018 Namibia Labour Force Survey. Results showed that the children’s characteristics such as their residential area, region, age group, highest educational attainment, school attendance and the types of social grants received had a significant impact on the children’s engagement in child labour activities, while the sex of the children did not. In addition, economically inactive children aged 8-9 years, who already attained a pre-primary education and were currently attending school were more likely to engage in child labour activities,
      while employed children who were receiving special maintenance grants meant for disabled children, war veterans/ex-combatants grants and other types of social grants were less likely to. It is therefore recommended that the Namibian government and policy makers constantly engage and collaborate with community leaders to assist in the improvement of the standards of living through the creation of decent employment for the children’s parents/guardians, thereby providing decent income to cover at least the basic needs of the children’s households.
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Radionuclide concentrations and radiation hazard assessment in the soil of
           Otjiwarongo, Namibia

    • Authors: N T Kapofi, J A Oyedele, S A Shimboyo, E Taapopi, G Uiseb
      Pages: 26 - 36
      Abstract: The natural radioactivity and associated hazards in soil samples collected from ten geographical areas in the town of Otjiwarongo, Namibia, have been studied by gamma-ray spectroscopy with an HPGe detector. The mean activity concentrations of the primordial radionuclides ²³ᴽU, and ²³²Th,  ⁴⁰K in the ten areas was found to vary from 37.6 ± 7.4 Bq/kg to 97.8 ± 46.2 Bq/kg for ²³ᴽU, from 81.9 ± 16.7 Bq/kg to 852.8 ± 533.0 Bq/kg for ²³²Th and from 498.7 ± 55.7 Bq/kg to 807.1 ± 94.5 Bq/kg for 40K. Most of these mean activity concentrations, especially those of ²³²Th, are much higher than the corresponding worldwide average values. In order to evaluate the associated health hazard, the activity concentrations were used to calculate different radiological parameters. The values obtained for the mean radium equivalent activity (ᴿᵃₑq) in some areas are above the maximum permissible limit. Also, the values obtained for the mean external hazard index (Hₑᵪ) in some areas are above the corresponding maximum permissible limit. However, the mean effective dose rates in the ten areas vary from 0.11 ± 0.01мSν y−¹ to 0.73 ± 0.43мSν y−¹ which are all below the maximum permissible limit of 1.0 mSv y−1 . These results imply that radiation hazard is negligible in the town of Otjiwarongo
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Efficacy of selected biopesticides against the tomato leaf miner, Tuta
           absoluta (Meyrick) (Lepidoptera: Gelechiidae), in Lusaka, Zambia

    • Authors: Emma Mazimba, Phillip O Y Nkunika, Miyanda N Moonga, James Nyirenda
      Pages: 37 - 49
      Abstract: The aim of this research was to evaluate the efficacy of four commercially available biopesticide for[1]mulations, Azadirachtin indica, Beauveria bassiana, Metarhizium anisopliae and Verticillium lecanii in the management of Tuta Absoluta (Meyrick)(Lepidoptera: Gelechiidae) under laboratory and field conditions. Analysis of variance (ANOVA) using Fisher’s least significant difference test (α = 0.05) showed that the mean percent mortality ranged from 41.3±6.8% to 77.9±14.3%. A. indica caused the highest mortality of 77.9±14.3% while mortality due to B. bassiana, V. lecanii, and M. anisopliae was 48.3 ± 2.8%, 44.8 ± 4.8% and 41.3 ± 6.8%, respectively. The estimated LC50 for A. indica was 30.4 µL±0.4, while LC50 for B. bassiana, M. anisopliae, V. lecanii were 107.1 µL±0.4, 193 µL±0.4 and 118.7 µL ± 0.4, respectively. Biopesticide efficacy on larval mortality from highest to least was A. indica, B. bassiana, V. lecanii and M. anisopliae respectively. Percentage corrected mortality ranged from A. indica (69.8 ± 8.1 to 88.4 ± 41.9%), B. bassiana (32.6 ± 4.0% to 60.5 ± 16.3%), V. lecanii (30.2 ± 1.7% to 55.8 ± 14.6%) and M. anisopliae (32.6 ± 4.0% to 53.5 ± 5.4%) respectively. The selected biopesticides significantly (P < 0.001) reduced T. absoluta egg count compared with the untreated control. Performance ranged from A. indica (2.8 ± 1.1 and 10.7 ± 1.2), B. bassiana (3.0 ± 0.6 and 10.7 ± 1.9), V. lecanii (4.3 ± 1.2 and 11.7 ± 1.4) and M. anisopliae (6.8 ± 1.4 and 13.0 ± 1.6) for egg mortality, respectively. The study showed that selected biopesticides were effec[1]tive and should be used by farmers as an integral component of Integrated Pest management (IPM) in the control of T. absoluta in Zambia. Further research should evaluate the effectiveness of the selected biopesticides in other agroecological zones of Zambia
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Freshwater Source Suitability for Aquaculture

    • Authors: N. K. Egun, I P Oboh
      Pages: 50 - 56
      Abstract: The study examined the Ikpoba Reservoir water quality suitability as source water for aquaculture. Sixteen (16) water physico-chemical parameters were monitored for a duration of eighteen (18) months from February 2018 to July 2019, and analyzed according to standard methods. Concentration values were compared with the International Standard Water Quality Criteria for fisheries. Results showed that mean water temperature (27◦C), electrical conductivity (100.46 µS/cm), chloride (27.08 mg/L), potassium (3.40 mg/L), calcium (25.16 mg/L), magnesium (15.56 mg/L) values were favourable for aquaculture. While mean water pH (5.78), turbidity (24.59 NTU), total suspended solids (23.70 mg/L), dissolved oxygen (4.36 mg/L), biochemical oxygen demand (4.16 mg/L), nitrate (15.67 mg/L) and ammonium (1.63 mg/L), iron (0.95 mg/L), copper (1.37 mg/L) and zinc (1.23 mg/L) concentrations were unsatisfactory for the breeding and survival of fish. The unsatisfactory levels of several physico-chemical parameters and their attendant effects on the development of fishes makes the reservoir water source unsuitable for use in freshwater aquaculture.
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Impacts of the Agrarian Land Reform Policy on Livelihoods of Resettled
           Communities Adjust to the Hwange National Park, Zimbabwe

    • Authors: Nelson Mhlanga, Lloyd Shorai Pisa
      Pages: 57 - 68
      Abstract: Post-colonial Zimbabwe has seen the implementation of agrarian reform policy. Through a case study of the Chimwara Community in Hwange District of Zimbabwe, It was the purpose of this research to investigate the resultant effects of associated resettlements to the edge of protected areas from the land redistribution processes on community livelihoods. Findings from the study show an increased influx and presence of women in the resettled communities and a diversification of livelihood sources from prior practiced ones, resettled households and farmers changed economic activity sources to suit the demands of the area including the presence of wildlife, with art and craft providing a new source of income for the resettled. 54% of participants shifted to crop production
      from a 49% prior practice and a slight decline in livestock farming was observed from 42% to 37% of survey respondents. The study highlights key issues pertinent in the promotion of human and wildlife coexistence practices and the need for diversification to alternative livelihood sources with the provision of key technical support for communities living proximal to protects areas with high
      wildlife densities being a priority need.
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
  • Biostimulation potentials of saw dust and cow blood on a spent engine oil
           polluted soil

    • Authors: Obemeata E. Oriakpono, Oluwatunmise Adetayo, Iris O Oriakpono
      Pages: 70 - 81
      Abstract: The study was carried out to examine the biostimulatory effect of saw dust and cow blood on remediation of soil polluted with spent engine oil. A completely randomized design with four treatments and three replicates each were used; three rates of saw dust and 1 litre of blood was applied to crude oil polluted soils. The results for soil physicochemical parameters showed significant variations (P < 0.05) as the levels of total organic carbon, total petroleum hydrocarbon, polycyclic aromatic hydrocarbon and nitrogen increased 2 weeks after pollution but decreased 4weeks after remediation. The bacteria count at two weeks after pollution was (1.4 × 103
      to 21.07 × 103) but increased at 4 weeks after remediation to (1.67 × 103 to 80.13 × 103 ). This study showed improved soil physicochemical properties after the application of saw dust and cow blood as biostimulatory agents on the soil polluted with spent engine oil.
      PubDate: 2022-01-31
      Issue No: Vol. 15 (2022)
       
 
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