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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 201 - 265 of 265 Journals sorted by number of followers
Patterns     Open Access   (Followers: 9)
Research     Open Access   (Followers: 6)
History of Science and Technology     Open Access   (Followers: 5)
Revista Científica de la Universidad Nacional del Este     Open Access   (Followers: 5)
Quantum Science and Technology     Hybrid Journal   (Followers: 5)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 4)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Journal of Big History     Open Access   (Followers: 4)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 4)
Frontiers in Climate     Open Access   (Followers: 4)
People and Nature     Open Access   (Followers: 4)
Data     Open Access   (Followers: 4)
Research Policy : X     Open Access   (Followers: 4)
Middle European Scientific Bulletin     Open Access   (Followers: 3)
Science & Technology Studies     Open Access   (Followers: 3)
Discover Sustainability     Open Access   (Followers: 3)
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 2)
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
International Journal of Culture and Modernity     Open Access   (Followers: 2)
Citizen Science : Theory and Practice     Open Access   (Followers: 2)
Acta Nova     Open Access   (Followers: 1)
iScience     Open Access   (Followers: 1)
Scientonomy : Journal for the Science of Science     Open Access   (Followers: 1)
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
AAS Open Research     Open Access   (Followers: 1)
Uluslararası Bilimsel Araştırmalar Dergisi (IBAD)     Open Access   (Followers: 1)
Journal of Science and Technology     Open Access   (Followers: 1)
Revista Vivências em Ensino de Ciências     Open Access   (Followers: 1)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 1)
Rihan Journal for Scientific Publishing     Open Access   (Followers: 1)
Journal of Science and Engineering     Open Access   (Followers: 1)
International Journal of Research in Science     Open Access   (Followers: 1)
ARPHA Conference Abstracts     Open Access   (Followers: 1)
Rekayasa     Open Access   (Followers: 1)
Revista Saber Digital     Open Access   (Followers: 1)
Impact     Open Access   (Followers: 1)
Global Journal of Science Frontier Research     Open Access   (Followers: 1)
Logo STI Science, Technology and Innovation     Open Access   (Followers: 1)
Revista de la Sociedad Científica del Paraguay     Open Access   (Followers: 1)
Jaunujų mokslininkų darbai     Open Access   (Followers: 1)
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 1)
Experimental Results     Open Access   (Followers: 1)
International Science and Technology Journal of Namibia     Open Access   (Followers: 1)
Fundamental Research     Open Access  
BJHS Themes     Open Access  
South American Sciences     Open Access  
Journal of Alasmarya University     Open Access  
Research Integrity and Peer Review     Open Access  
Natural Sciences Education     Hybrid Journal  
Indian Journal of History of Science     Hybrid Journal  
RAC: Revista Angolana de Ciências     Open Access  
The Innovation     Open Access  
Journal of Responsible Technology     Open Access  
Natural Sciences     Open Access  
Türk Bilim ve Mühendislik Dergisi     Open Access  
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access  
Ethiopian Journal of Sciences and Sustainable Development     Open Access  
Vilnius University Proceedings     Open Access  
Sciential     Open Access  
ARPHA Proceedings     Open Access  
Gaudium Sciendi     Open Access  
Crea Ciencia Revista Científica     Open Access  
Rafidain Journal of Science     Open Access  
Journal of Al-Qadisiyah for Pure Science     Open Access  
Revista Tecnológica     Open Access  
Himalayan Journal of Science and Technology     Open Access  
International Journal of Academic Research in Business, Arts & Science     Open Access  
Universidad, Ciencia y Tecnología     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Revista Politécnica     Open Access  
Reportes Científicos de la FaCEN     Open Access  
Jurnal Ilmiah Ilmu Terapan Universitas Jambi : JIITUJ     Open Access  
Revista Eletrônica Ludus Scientiae     Open Access  
Emergent Scientist     Open Access  
Journal of Scientific Research and Reports     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Archives of Current Research International     Open Access  
Advances in Research     Open Access  
International Journal of Applied Science     Open Access  
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
J : Multidisciplinary Scientific Journal     Open Access  
Revista Binacional Brasil - Argentina: Diálogo entre as ciências     Open Access  
Revista Ciencia y Tecnología     Open Access  
Journal of Institute of Science and Technology     Open Access  
Journal of Science (JSc)     Open Access  
WikiJournal of Science     Open Access  
Acta Materialia Transilvanica     Open Access  
Integrated Research Advances     Open Access  
PENDIPA : Journal of Science Education     Open Access  
Open Conference Proceedings Journal     Open Access  
Naturen     Full-text available via subscription  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Sci     Open Access  
Maskana     Open Access  
Hoosier Science Teacher     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Facets     Open Access  
Adıyaman University Journal of Science     Open Access  
Revista Brasileira de Iniciação Científica     Open Access  
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Scientific African     Open Access  
Scientific Journal of Mehmet Akif Ersoy University     Open Access  
Black Sea Journal of Engineering and Science     Open Access  
Fırat University Turkish Journal of Science & Technology     Open Access  
Gazi University Journal of Science     Open Access  
Middle East Journal of Science     Open Access  
International Journal of Computational and Experimental Science and Engineering (IJCESEN)     Open Access  
International Journal of Engineering, Technology and Natural Sciences     Open Access  
Bulletin of the National Research Centre     Open Access  
Uni-pluriversidad     Open Access  
ConCiencia     Open Access  
Ciencia y Tecnología     Open Access  
Revista Bases de la Ciencia     Open Access  
Elkawnie : Journal of Islamic Science and Technology     Open Access  
Ciência ET Praxis     Open Access  
Arab Journal of Basic and Applied Sciences     Open Access  
International Annals of Science     Open Access  
Science Heritage Journal     Open Access  
Bilge International Journal of Science and Technology Research     Open Access  
Avrasya Terim Dergisi     Open Access  
International Scientific and Vocational Studies Journal     Open Access  
TÜBAV Bilim Dergisi     Open Access  
LOGIKA Jurnal Ilmiah Lemlit Unswagati Cirebon     Open Access  
Dalat University Journal of Science     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Respuestas     Open Access  
Science Diliman     Open Access  
Instruments     Open Access  
Revista Científica y Tecnológica UPSE     Open Access  
HardwareX     Open Access  
Sultan Qaboos University Journal for Science     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
Sainstek : Jurnal Sains dan Teknologi     Open Access  
Revista de Información Científica     Open Access  
Indonesian Journal of Fundamental Sciences     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Jurnal Natural     Open Access  
Frontiers for Young Minds     Open Access  
Revista Ciência, Tecnologia & Ambiente     Open Access  
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Negative and No Positive Results     Open Access  
Revista Conhecimento Online     Open Access  
Nova     Open Access  
CienciaUAT     Open Access  
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Makara Journal of Science     Open Access  
Jurnal Sains Dasar     Open Access  
Indonesian Journal of Science and Technology     Open Access  
Ethiopian Journal of Science and Technology     Open Access  
Jurnal Matematika, Sains, Dan Teknologi     Open Access  
Heidelberger Jahrbücher Online     Open Access  
ARO. The Scientific Journal of Koya University     Open Access  
International Journal of Recent Contributions from Engineering, Science & IT     Open Access  
Estação Científica (UNIFAP)     Open Access  
The Winnower     Open Access  

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Similar Journals
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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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