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Journal articles on the topic 'Radalert'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Biere, Peter E, Aluko, Tolulope O., and Emumejaye, Kugbere. "Estimation of Excess Lifetime Cancer Risks at the Niger Delta University Sculpture Garden, Wilberforce Island, Bayelsa State, Nigeria." International Journal of Latest Technology in Engineering Management & Applied Science 14, no. 1 (2025): 216–21. https://doi.org/10.51583/ijltemas.2025.1401023.

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The exposure rates at the Niger Delta University sculpture gardens have been measured and excess lifetime cancer risk has also been determined. Measurement of exposure rate was carried out in a total of twenty points around the garden using a portable hand-held radiation detector, radalert 100X. Results show averages of exposure rate, absorbed dose, annual effective dose and excess lifetime cancer risk as 0.012 mRh-1, 107.9 nGyh-1, 0.132 mSvy-1 and 0.162 x 10-3 respectively. All averages, except for absorbed dose rate, were below world average. The results show low radiation level in the mater

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2

Karki, R. S., R. Bhatta, B. P. Jha, R. Khanal, and B. R. Shah. "Study of Natural Background Radiation in Bagmati Province, Nepal." Journal of Nepal Physical Society 9, no. 2 (2023): 63–68. http://dx.doi.org/10.3126/jnphyssoc.v9i2.62405.

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In this research, we explored the influence of natural sources on ambient radiation levels in the surrounding environment. Our investigation involved conducting a comprehensive survey of background radiation across seven districts in the Bagmati province. We utilized a Radalert 100 radiation monitor to measure the background dose rate at 141 different locations. The recorded background ionizing radiation at these sites varied from 0.022 mR/hr to 0.028 mR/hr, averaging at 0.025 mR/hr. The mean dose rate was determined to 2.129 ± 0.172 mSv/y. Subsequently, the obtained dose rates were used to co

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3

Furo, Evelyn V., I. A. Hart, and Chinyere P. Ononugbo. "Risk Assessment of Outdoor Gamma Radiation in Some Coastal Communities of Delta State, Nigeria." Asian Journal of Advanced Research and Reports 17, no. 10 (2023): 173–85. http://dx.doi.org/10.9734/ajarr/2023/v17i10542.

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An assessment of background ionization radiation and associated health risk in some coastal communities of Delta State, Nigeria was carried out using a well calibrated portable radiation detector (Radalert-200) and GPS (Garmin GPS 72H) for the measurement of the geographical locations. The study covered Abiteye and Anotech Jetty water ways with nine notable communities assessed, where marine transportation and equipment haulage are predominant. The exposure rates ranged from 0.011 to 0.019 mRh−1 with overall mean value of 0.015 ± 0.002 mRh−1. The computed absorbed dose rates ranged from 95.70

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4

Bubu, A., and C. P. Ononugbo. "Measurement of Outdoor and Indoor Background Ionizing Radiation of O.B. Lulu Briggs Health Center, University of Port Harcourt, Choba, Rivers State, Nigeria." Asian Journal of Physical and Chemical Sciences 11, no. 3 (2023): 21–29. http://dx.doi.org/10.9734/ajopacs/2023/v11i3203.

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Measurement of outdoor and indoor background ionizing radiation (BIR) of O.B. Lulu Briggs Health Centre in the University of Port Harcourt, Rivers State, Nigeria was carried out using a well-calibrated Radalert-100 (Radiation meter) and Digilert-200 meters and Global Positioning System (Garmin 765). 30 selected locations were considered. The outdoor and indoor results are as follows respectively, average exposure rates are 0.012±0.001 and 0.013±0.001 mR/h, mean absorbed dose rate (ADR) are 105.6 and 96.28 nGy/h, estimated value of the annual effective dose equivalent (AEDE) are 0.17 and 0.27 m

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5

A., I. Olanrewaju, and O. Avwiri G. "Assessment of the Radiation Hazard Indices from Terrestrial Radiation in Mining Sites in Benue State, Nigeria." Asian Journal of Environment & Ecology 2, no. 4 (2017): 1–10. https://doi.org/10.9734/AJEE/2017/33373.

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The assessment of the radiation hazard indices of solid minerals and sand in mining sites of Benue State, Nigeria was carried out using well calibrated radalert-50 and 100 meters and a Global Positioning System (Garmin 765). The sites investigated are Lessle (Barite), Gboko (Limestone), Owukpa (Coal) and Akuana (Salt) deposits fields. The mean background radiation ionization exposure rate of 0.019±0.004, 0.019±0.004, 0.014±0.002 and 0.023±0.005 mRh<sup>-1</sup> were obtained respectively. The mean of absorbed dose rates estimated for the mining fields are 161.53, 169.40, 120.35 and 201.84 nGy/

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6

Biere, Peter E., Emumejaye Kugbere, and Ayorinde B. Ogunremi. "Measurement and Comparison of Indoor and Outdoor Exposure Rates and Radiation Risks in Tantua-Amassoma, Bayelsa State, Nigeria." International Journal of Research and Scientific Innovation XII, no. I (2025): 432–39. https://doi.org/10.51244/ijrsi.2025.12010037.

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Residential areas for university students are special places where they spend a lot of time and may be contaminated by radionuclides and radon. The necessity of radiation monitoring, mapping, and mitigation techniques to reduce potential health hazards is highlighted by the fact that prolonged exposure to background ionizing radiation can also result in neurological illnesses, reproductive issues, and carcinogenic and mutagenic consequences. The goal of this research is to analyze radiological risks both indoors and outdoors in a neighborhood that is primarily populated by university students.

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7

Pantha, Parkash, Tanka Prasad Bhusal, Budha Ram Shah, and Rajendra Prasad Koirala. "Study of natural background radiation in Kathmandu Valley." BIBECHANA 16 (November 22, 2018): 187–95. http://dx.doi.org/10.3126/bibechana.v16i0.21605.

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The study of natural background radiation dose at thirty two locations of Kathmandu valley has been done successfully using the instrument Radalert 100. The average dose rates and annual effective dose were measured. From the measurements, the least value of average dose rate was found to be (22.3±3.9)×10-3 mR/hr for Sundhara and the greatest value of average dose rate was found to be (37.7±7)×10-3 mR/hr for Budhanilkantha 3. As per the annual effective dose, the least value was 0.391 mSv/yr for Sundhara and the greatest value was 0.661 mSv/yr for Budhanilkantha 3. The average annual effective

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8

Chaanda, Mohammed S., Agbalagba Ezekiel, and Felix Igede. "RADIOLOGICAL EVALUATION OF THE CONCENTRATION AND IMPACT OF OIL AND GAS ACTIVITIES IN ERUEMUKOHWARIEN AREA OF SOUTHERN NIGERIA." Geological Behavior 4, no. 2 (2020): 47–53. http://dx.doi.org/10.26480/gbr.02.2020.47.53.

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The study was carried out in-situ using a Radalert 100 nuclear radiation monitor and a geographical positioning system (GPS). Five facilities were investigated at the rig site which included the rig site host community as well as the camp site for the oil workers at Ekapkamreh town. Ten 10 sampling locations were evaluated at a total of 60 study points. The values obtained range between 0.115±0.018 (µSv/hr) and 0.299±0.040 (µSv/hr) for the rig site environment, 0.111±0.006 (µSv/hr) and 0.337±0.031 (µSv/hr) for field logistic base (offices and workshops), 0.114±0.011 (µSv/hr) and 0.312±0.021 (µ

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9

Orlunta, Aloysius Ndubisi, and Sylvester Akinabie Sokari. "Terrestrial Radiation of Some Selected Active Telecommunication Sites in Port Harcourt, Rivers State, Nigeria." Asian Journal of Research and Reviews in Physics 7, no. 1 (2023): 24–32. http://dx.doi.org/10.9734/ajr2p/2023/v7i1132.

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A study on terrestrial background ionization radiation was carried out around active selected telecommunications sites in Port Harcourt. This study was done using Radalert 100 and the geographical position system (GPS). The exposure rate ranged from 0.033 to 0.141 with a mean value of 0.123±0.20 (mR/h) which is lower than the acceptable limit of 0.0133 (mR/h). The absorbed dose ranged from 287.1 nG/h to 1226.7 nGy/hr with a mean value of 1066.64±1769.6 nGy/hr, which is quite higher than the acceptable limit of 89.0 nGy/h. The annual effective dose ranged between 0.44 and 1.88 mSv/y, with a mea

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10

Ogobiri, Godwin E., P. E. Biere, Precious Ubah, and Ibuama E. Abule. "Background Ionization Radiation Of Selected Water Factories In Yenagoa Metropolis Bayelsa State." International Journal of Research and Scientific Innovation IX, no. IV (2024): 68–74. http://dx.doi.org/10.51244/ijrsi.2024.1104006.

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The research work was carried out at the water factories of both Allen T. water factory and Niger Delta University (NDU) water factory in Bayelsa State, Nigeria. Radiation Monitoring Device- Radalert x100 was deployed in carrying out the study. The water factories were partitioned into ten different locations as indicated in the both Tables. The Background Ionizing Radiation (BIR) mean value of 0.016 mSv/y was recorded at Allen T. water factory as against the BIR mean value, 0.013 mSv/y as recorded at Niger Delta University (NDU) water factory. The mean Absorbed dose rate (AbD) of 0.140 nGy/h

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11

I., E. Nwokeoji, and O. Avwiri G. "Radiological Risk Estimates Due to Background Exposures in Selected Hospitals in South – East Nigeria." Archives of Current Research International 8, no. 1 (2017): 1–12. https://doi.org/10.9734/ACRI/2017/34244.

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Radiation is present everywhere on the Earth and humans are exposed to it without being aware of it. Exposure to natural ionizing radiation is inevitable as long as we live on Earth. An <em>in-situ</em> measurement of indoor and outdoor exposure dose rates of Federal Medical Center Umuahia (FMC Umuahia) and Federal Medical Center Owerri (FMC Owerri) were measured with well calibrated radiation meters (Radalert-100 and Digilert-200). The average indoor and outdoor exposure rates for Federal Medical Center Umuahia were 0.014±0.003 and 0.014±0.003 mRh<sup>-1</sup>, while that for Federal Medical

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12

C., P. Ononugbo, and U. Nte F. "Measurement of Outdoor Ambient Radiation and Evaluation of Radiological Risks of Coastal Communities in Ndokwa East, Delta State, Nigeria." Advances in Research 9, no. 6 (2017): 1–11. https://doi.org/10.9734/AIR/2017/33984.

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<strong>Aim: </strong>The aim of this study is to measure the outdoor ambient radiation and evaluate its associated radiological risk parameters of the coastal communities of Ndokwa East. <strong>Study Design: </strong>The design of this study is purely experimental work. <strong>Place and Duration: </strong>This study was carried out in five coastal communities of Ndokwa East. <strong>Methodology: </strong>Measurement of outdoor ambient radiation of the five coastal communities was done using a Radalert-200 nuclear radiation monitor (S.E international, inc. Summer town, USA), containing a Gei

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13

Ramdhani, A. R., and A. Saripudin. "Radio Altimeter (Radalt) Simulator on Aircraft using Arduino UNO." IOP Conference Series: Materials Science and Engineering 384 (July 2018): 012074. http://dx.doi.org/10.1088/1757-899x/384/1/012074.

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14

Alberto, E. Pérez. "Tecnología cerámica de Los Radales 1. Periodo Alfarero Tardío (El Vergel), sector oriental cordillerano de la cuenca valdiviana (Neuquén, Patagonia Argentina)." Arqueologia Iberoamericana 39 (July 30, 2018): 29–35. https://doi.org/10.5281/zenodo.3475431.

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El sitio Los Radales 1 representa el primer estudio sistemático del recientemente caracterizado «sector oriental cordillerano del área arqueológica de la cuenca del río Valdivia». Se trata de un evento único de ocupación datado en 480 ± 60 años AP (madera, LP 3035) en pleno contexto del Periodo Alfarero Tardío, con cerámica de la tradición bícroma rojo sobre blanco e incluyendo el primer registro oriental cordillerano de alfarería tricolor. Se presenta la caracterización de los conjunt

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15

Ryabova, Mariya V. "Mythopoetic Model of Space and Time in S. E. Neldikhen’s Holiday (Ilya Radalyet) Poem-Novel." Izvestiya of Saratov University. New Series. Series: Philology. Journalism 19, no. 1 (2019): 57–62. http://dx.doi.org/10.18500/1817-7115-2019-19-1-57-62.

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16

Assis, Omar Sebastian, Claudia Beatriz Zaffarana, Darío Orts, et al. "Emplacement conditions and exhumation of the Varvarco Tonalite and associated plutons from the Cordillera del Viento, Southern Central Andes." Geological Magazine 159, no. 5 (2022): 645–72. http://dx.doi.org/10.1017/s0016756821001163.

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AbstractDuring the Late Cretaceous Andean orogeny, the compressive deformation associated with the shallowing of the subducting slab caused the development of the arc-related igneous rocks known as the Naunauco Belt. This study presents petrographic, mineralogical and anisotropy of magnetic susceptibility data for the Varvarco Intrusives (the Varvarco Tonalite, Butalón Tonalite and Radales Aplite), which crop out in the Cordillera del Viento, Neuquén Province, Argentina. The assembly of plutons was formed by mafic magma episodic injection. Amphibole and biotite compositions suggest that the Va

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17

Mgbeokwere, C., C. P. Ononugbo, and A. Bubu. "Teresterial Background Ionizing Radiation around Lead/Zinc Mining Site in Ishiagu, Ebonyi State, Nigeria." Asian Journal of Physical and Chemical Sciences, December 14, 2021, 1–13. http://dx.doi.org/10.9734/ajopacs/2021/v9i430141.

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Background ionizing radiation around Lead/Zinc mining sites at Ishiagu, Ebonyi State was carried out using appropriate equipment. The background ionizing radiation of the environment was determined by measuring the radiation exposure rates using Radalert-200 and Geographical Positioning System (GPS). Radiological health parameters and effective dose to different organs of the body was estimated. The average exposure rate of 0.00017mSv/h (0.017mR/h) measured was relatively higher than the world acceptable value of 0.00013mSv/h (0.013mR/h ). All the radiological risk parameters estimated are rel

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18

Ezemba, Vivian C., Chijioke M. Amakom, Chinyere P. Ononugbo, Gregory O. Avwiri, and Romanus E. Ugwoke. "Assessment of Environmental Radiation Levels in Anambra South Senatorial District, Anambra State, Nigeria." Environmental Health Insights 19 (July 2025). https://doi.org/10.1177/11786302251350781.

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The environmental radiation levels in Anambra South Senatorial District were evaluated through in situ measurements using a well-calibrated nuclear radiation meter (Radalert-100TM). A Global Positioning System (GPS) was utilized to record the exact coordinates of the selected locations. A total of 170 sampling locations were surveyed across the district. The average exposure rate across the district was measured as 0.0123 ± 0.0003 mRh −1 . The overall average values for the absorbed dose rate (ADR), equivalent dose rate (EDR), annual effective dose equivalent (AEDE), and excess lifetime cancer

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19

Avwiri, G. O., J. Ekpo, and Y. E. Chad-Umoren. "Occupational Hazards from Outdoor and Indoor Radiation in Oil Field Facilities in Rivers State, Nigeria." Asian Journal of Physical and Chemical Sciences, November 11, 2019, 1–7. http://dx.doi.org/10.9734/ajopacs/2019/v7i430099.

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The aim of this study is to determine the occupational hazards due to exposure to gamma radiations from oil and gas facilities. In-situ measurement of radiation exposure rate of some Oil Field Facilities in Rivers State, Nigeria carried out using Digilert 200 and Radalert 100 nuclear radiation monitor and a geographical positioning system (Garmin GPSMAP 76S). The average exposure rates of the facilities range from 0.010±0.002 to 0.015±0.001, for indoor and 0.014±0.003 to 0.027±0.003 for outdoor. The mean absorbed dose rates for indoor varied from 92.1 to 121.1 nGyh-1 while the mean outdoor abs

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20

C. Kingsley, Azionu, Avwiri O. Gregory, and Ononugbo, P. Chinyere. "Occupational Hazards from BIR in Selected Crude Oil Production Pipes Storage Locations in Niger Delta Region of Nigeria." Current Journal of Applied Science and Technology, August 22, 2019, 1–12. http://dx.doi.org/10.9734/cjast/2019/v37i230277.

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The study of occupational hazards from BIR in selected crude oil production pipes storage locations in Niger Delta Region of Nigeria has been carried out using two well calibrated radiation monitoring meters (Digilert Tm 100 and Radalert Tm 200). A global positioning system (GPS 76 CSX) was also used to geographically co-ordinate the sampling locations. Measurements were carried out in forty two (42) selected locations in oil producing area of Niger Delta. The following parameters were estimated to determine the level of occupational exposures by crude oil production pipes dealers and customer

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21

Audu, M. U., G. O. Avwiri, and C. P. Ononugbo. "Evaluation of Background Ionizing Radiation Level of Selected Oil Spill Communities of Delta State, Nigeria." Current Journal of Applied Science and Technology, November 1, 2019, 1–10. http://dx.doi.org/10.9734/cjast/2019/v38i330362.

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Study of the terrestrial Background Ionizing Radiation levels of selected Oil Spill Communities of Delta State, Nigeria have been carried out using Digilert 200 and Radalert 100 nuclear radiation monitor and a geographical positioning system (Garmin GPSMAP 76S). The exposure rates of the five communities ranges from 0.016 to 0.030 at Jones Creek, 0.014 to 0.034 at Opuwade Community, 0.015 to 0.037 at Okpare community, 0.007 to 0.029 at OtuJeremi community and 0.011to 0.040 at Otor-Edo community. The obtained mean exposures rates were higher than ICRP standard limit of 0.013. The absorbed dose

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22

Anyalebechi, C. D., O. L. Gbarato, and C. P. Ononugbo. "Assessment of Background Gamma Radiation Level in Selected Dump Site of Niger Delta, Nigeria." Archives of Current Research International, June 2, 2022, 10–18. http://dx.doi.org/10.9734/acri/2022/v22i430282.

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Our environment has been exposed to ionizing radiation from indiscriminate dumping of refuse which is seen as unending and unpreventable challenge on earth. Radiation level and exposure risks in some selected dump site in Rivers state have been calculated using radiation exposure rate meter (Radalert-100). Rate of exposure measured at Ignatius Ajuru University of Education (IAUE) and its environment ranged from 0.005±0.0001 to 0.016±0.003 mRh-1 with mean value of 0.015±0.002 mRh-1 and that measured at Igwuruta ranged from 0.009±0.001 to 0.048±0.003 mRh-1 its mean value is 0.015±0.002 mRh-1. Fo

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23

Anyalebechi, C. D., O. L. Gbarato, and C. P. Ononugbo. "Assessment of Background Gamma Radiation Level in Selected Dump Site of Niger Delta, Nigeria." Archives of Current Research International, June 2, 2022, 10–18. http://dx.doi.org/10.9734/acri/2022/v22i430282.

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Our environment has been exposed to ionizing radiation from indiscriminate dumping of refuse which is seen as unending and unpreventable challenge on earth. Radiation level and exposure risks in some selected dump site in Rivers state have been calculated using radiation exposure rate meter (Radalert-100). Rate of exposure measured at Ignatius Ajuru University of Education (IAUE) and its environment ranged from 0.005±0.0001 to 0.016±0.003 mRh-1 with mean value of 0.015±0.002 mRh-1 and that measured at Igwuruta ranged from 0.009±0.001 to 0.048±0.003 mRh-1 its mean value is 0.015±0.002 mRh-1. Fo

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24

Onwuka, M., C. P. Ononugbo, and G. O. Avwiri. "Radiation Organ Doses and Excess Lifetime Cancer Risk Due to Exposure to Gamma Radiation from Two Cement Industries in Nigeria." Journal of Scientific Research and Reports, October 24, 2019, 1–12. http://dx.doi.org/10.9734/jsrr/2019/v25i1-230178.

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A study of background ionizing radiation (BIR) levels to estimate organ dose rates and excess lifetime cancer risk in Unicem cement producing company, Calabar, Cross River state and Bua cement producing company, Okpella in Edo state have been carried out using Digilert 100 and Radalert-200 nuclear radiation monitor and a geographical positioning system (GPS) for GIS mapping of the area. The in-situ measurement of the exposure rate was between May, 2018 and June, 2019 at regular intervals. The average exposure rate of 0.023 mRh-1 was measured at Unicem, Calabar and 0.027 mRh-1 at Bua cement are

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