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Sylvanus Ameh Onjefu

Observed names: Onjefu , Sylvanus Ameh, Onjefu A. Sylvanus, Onjefu Sylvanus Ameh, Onjefu, Sylvanus Ameh, S A Onjefu, S Onjefu, S. A. Onjefu, S.A. Onjefu, Sylvanus A Onjefu, Sylvanus A. Onjefu, Sylvanus Onjefu
ORCID: 0000-0002-2340-6906
Observed ORCID: 0000-0002-2340-6906
OpenAlex ID: A5080259392
Metal oxide functionalized ceramic membranes for the removal of pharmaceuticals in wastewater
2023 · Lawrence Sawunyama, Opeyemi A. Oyewo, et al. · Surfaces and Interfaces · 70
Assessment of natural radionuclide distribution in shore sediment samples collected from the North Dune beach, Henties Bay, Namibia
2017 · Sylvanus A. Onjefu, Simeon H. Taole, et al. · Journal of Radiation Research and Applied Sciences · 37
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Assessment of heavy metals pollution in sediment at the Omaruru River basin in Erongo region, Namibia
2020 · Sylvanus Ameh Onjefu, Fatima Shaningwa, et al. · Environmental Pollutants and Bioavailability · 31
Heavy metals pollution status of the Katima Mulilo Urban open land wastewater disposal centre and the immediate vicinity
2020 · Abah James, Mashebe Percy, et al. · Sustainable Environment · 18
Assessment of radioactivity levels in shore sediments along the coastline of the Orange River, Oranjemund, Namibia
2022 · Sylvanus Ameh Onjefu, Aina Nancy Iyaloo Kauluma, et al. · Heliyon · 15
Radiological analysis of the suitability of Erongo granite for building material
2021 · Sylvanus Ameh Onjefu, Mpingana Laimi Iyambo, et al. · Geomatics Natural Hazards and Risk · 14
Assessment of Heavy Metals Pollution Status of the Pasture Grass around Katima Mulilo Municipal Solid Wastes Dumpsite, Namibia
2017 · J. Abah, P. Mashebe, et al. · International Journal of Environmental Science and Development · 14
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Measurement of Noise Pollution in Northern Industrial Areas of Windhoek, Namibia
2019 · Sylvanus Ameh Onjefu, Emmanuel Ejembi, et al. · Journal of Environmental Protection · 12
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Assessment of heavy metals pollution status of surface soil dusts at the Katima Mulilo urban motor park, Namibia
2023 · James Abah, Evans Kamwi Simasiku, et al. · Geomatics Natural Hazards and Risk · 11
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Radiometric survey of sediments and health risk assessments from the southern coastal area of Delta State, Nigeria
2024 · Oghenevovwero E. Esi, Gregory O. Avwiri, et al. · Heliyon · 9
Natural radioactivity levels and evaluation of radiological hazards in Usakos marble, Erongo region, Namibia
2022 · S.A. Onjefu, N.N. Johannes, et al. · Internatuinal Journal of Radiation Research · 8
Natural radioactivity assessments and radiological hazards in agricultural soils around mining activities in Karibib, Namibia
2025 · Sylvanus Ameh Onjefu, Biere Peter Ebibuloami, et al. · Nuclear Analysis · 7
Some Heavy Metals’ Concentrations in Roadside Dusts at Monte Christo, Windhoek Namibia
2017 · S. A. Onjefu, J. Abah, et al. · International Journal of Environmental Science and Development · 7
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Occupancy Factor Model for Exposure to Natural Radionuclides along the Coastline of Erongo Region, Namibia
2016 · Sylvanus A. Onjefu, Nnenesi A. Kgabi, et al. · Journal of Geoscience and Environment Protection · 6
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Assessment of natural radioactivity levels and radiation hazards in shore sediments from the Zambezi River, Namibia
2019 · Maria N. Amwaalanga, Sylvanus Ameh Onjefu, et al. · UNAM Scholarly Repository (University of Namibia) · 4
Some trace metals content of atmospheric dusts deposition in Katima Mulilo metropolis, Namibia
2014 · J. Abah, P. Mashebe, et al. · IOSR Journal of Environmental Science Toxicology and Food Technology · 4
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Assessment of heavy metal pollution of the stream sediment from the Omaruru Basin, Erongo Region of western central Namibia
2025 · Victor Uzoma Nwagbara, Erold Naomab, et al. · All Earth · 3
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Natural radioactivity & associated radiological health hazards in soil around Van Eck Power plant, Windhoek, Namibia
2022 · Hitila, Markus Vaefeni, Onjefu, Sylvanus Ameh · arXiv (Cornell University) · 3
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Annual effective dose and radiological risk assessment from selected salt pans from the lagoon of Erongo region, Namibia.
2022 · Onjefu Sylvanus Ameh, Hamukotoh Tuwilika, et al. · International Journal of Applied Science and Engineering · 3
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Health Risk Assessment of Natural Radioactivity in Wasteland Soils in Okakarara, Namibia..
2021 · Sylvanus Onjefu, Caspah Kamunda, et al. · Arab Journal of Nuclear Sciences and Applications · 3
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Radiological Risk Assessment of Technologically Enhanced Naturally Occurring Radioactive Materials in coal wastes from Van Eck Coal-Fired thermal Power Plant, Namibia.
2021 · Markus V Hitila, Sylvanus A Onjefu · Namibian Journal for Research Science and Technology · 1
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Heavy Metals Content of the Grassland Soil around Katima Mulilo Municipal Solid Wastes Dumpsite, Namibia
2017 · J. Abah, P. Mashebe, et al. · American Journal of Environmental Sciences · 1
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Measurement of the Level of Some Heavy Metals in Fall-out Dusts at Rehoboth Town, Hardap Region, Namibia
2016 · S Onjefu, N Hamatui, et al. · British Journal of Applied Science & Technology · 1
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Particulate Matter Concentrations in the Vicinity of an Incinerator
2016 · Kristine Walungama Endjambi, Onjefu Sylvanus Ameh, et al. · Journal of Geoscience and Environment Protection · 1
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Natural radioactivity concentrations and occurrence of heavy Metals in Shore Sediments along the Coastline of the Erongo Region in Western Namibia
2016 · Sylvanus Ameh Onjefu · Boloka Institutional Repository (North-west University) · 1
Works count: 30
Citation count: 286
H-index: 9
I10-index: 9
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