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1

Василенко, E. Vasilenko, Ефимов, et al. "Lifetime Risk of Lung Cancer Death for Inhalation 239Pu." Medical Radiology and radiation safety 62, no. 1 (2017): 27–31. http://dx.doi.org/10.12737/25046.

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Aim of the study: Assessment of reliability of radiation safety standards after inhalation intake of Pu-239. Material and methods: Using results of epidemiological study of lung cancer mortality in Mayak workers cohort and statistical data on all causes and lung cancer mortality in Russia the excess lifetime risk of lung cancer death was calculated. Results: Current radiation safety standards restrict annual intake of Pu-239 class “S” at 1300 Bq/year level. The annual limit of intake is calculated in a way that the level of committed effective dose in 50 years after intake should not exceed 20
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2

Muhammad, Nuruddeen Abdulkareem, Abiodun Ibrahim Olanrewaju, Mudassir Usman Muhammad, Isiaka Onaolapo Raheem, and Yakubu Ibrahim. "Assessment and evaluation of residents' excess lifetime cancer risk of federal university of Kashere, Gombe State, Nigeria." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 1499–510. https://doi.org/10.5281/zenodo.10335802.

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A Study of indoor and outdoor radiation dose rate level measurements for male and female hostels at the Federal University of Kashere Hostels, Gombe State, Nigeria, has been carried out with the radiation alert smart 4 to ascertain the radiation level. The measured radiation dose rates were used to calculate the excess lifetime cancer risk and assess radiological health risks. The mean annual outdoor and indoor equivalent doses were 0.025 mSv/y. and 0.370 mSv/y. were recorded, with less than 1 mSv/y. maximum recommended limit for the general public. The mean annua
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3

Damla, Nevzat, Ayhan Kara, Eyüp Tel, and Cafer M. Yesilkanat. "Mapping of indoor radon survey and dose estimations in health centres in Turkey." Indoor and Built Environment 26, no. 3 (2016): 327–36. http://dx.doi.org/10.1177/1420326x15606508.

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Radon and its short-lived daughter products, leading to lung cancer, are the most significant contribution to the exposure of man to ionizing radiation from natural sources. Therefore, the present study aimed to assess indoor radon measurements in 39 rooms of 15 health centres in Osmaniye city, Turkey using CR-39 solid-state nuclear track detectors based on radon dosimeters. Indoor radon concentrations were found to change from 8 to 108 Bq·m−3. The associated radiological parameters such as the annual effective dose and excess lifetime cancer risk were computed for staff/patient in the rooms s
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4

Otansev, Pelin, and Nesli Bingöldağ. "INDOOR RADON CONCENTRATION AND EXCESS LIFETIME CANCER RISK." Radiation Protection Dosimetry 198, no. 1-2 (2022): 53–61. http://dx.doi.org/10.1093/rpd/ncab191.

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Abstract In this study, the indoor radon ( 222Rn) levels in summer and winter seasons were measured by using a total of 537 CR-39 detectors. The arithmetic mean values (ranges) of radon activity concentrations (RACs) in summer and winter seasons were found to be 71 Bq m −3 (27–313 Bq m−3) and 241 (89–1047 Bq m−3), respectively. In 20 houses, the RAC was higher than 400-Bq m−3 critical value declared by the Turkish Atomic Energy Authority (TAEK). The mean radon concentrations in summer and winter seasons were below the critical value declared by TAEK. According to normality test, the radon dist
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5

Oktamuliani, Sri, and Nurul Khaira Sabila. "Estimation of the excess of lifetime cancer risk in Solok Selatan." E3S Web of Conferences 464 (2023): 11003. http://dx.doi.org/10.1051/e3sconf/202346411003.

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This study aimed to minimize radiation risk in Solok Selatan by analyzing active concentrations of 226Ra, 232Th, and 40K, calculating excess lifetime cancer risk (ELCR) from annual effective dose equivalent (AEDE). Soil samples from seven sites in the Solok Selatan, 0 – 5 cm deep, were tested with a high-purity germanium (HPGe) detector. 232Th concentrations exceeded the established global standard of 30 Bq/kg. In addition, the study included the determination of Radium Equivalent (Raeq), absorbed gamma dose rate (D), AEDE, and ELCR. Annual effective dose ranged from 68.33 to 19.92 μSv/y, belo
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6

GOSHU, B. S. "Estimation of annual effective radiation dose and cancer risk due to tea consumption." Romanian Journal of Biophysics 34, no. 2 (2024): 73–85. http://dx.doi.org/10.59277/rjb.2024.2.02.

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The current study aims to assess the radioactive health risks and their levels due to tea consumption. Fresh tea leaves were plucked from different locations in the Gumero tea farmland in Ilubabour zone, Ethiopia. High-resolution gamma-ray spectroscopy was used to measure the activity concentrations of artificial and natural radionuclides (e.g., 40K, 232Th, and 238U) in the samples. Radiological indicators such as committed dose rate (DR) and excess lifetime cancer risk, LCR (i.e., the cancer death risk due to lifetime exposure to carcinogens, ignoring the contribution of natural background ri
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7

Hashemi, Marjan, Leila Akhoondi, Mohammad Hossien Saghi, and Akbar Eslami. "ASSESSMENT OF INDOOR GAMMA RADIATION AND DETERMINATION OF EXCESS LIFETIME CANCER RISK IN TEHRAN IN WINTER AND SPRING 2017." Radiation Protection Dosimetry 184, no. 2 (2018): 148–54. http://dx.doi.org/10.1093/rpd/ncy193.

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Abstract Natural radiation is a feature of the environment in which we live. One of the contributions of human exposure to ionizing radiation due to natural sources arises from gamma radiation. Therefore, present study was aimed to evaluate and map indoor gamma dose rate in Tehran. The corresponding annual effective dose (AED) and excess lifetime cancer risk (ELCR) were also calculated. All measurements were performed by a Geiger Muller detector in 43 dwellings in Tehran. The average indoor gamma dose rate in Tehran was appointed as 343.2 nGy/h. AED and ELCR were calculated as 2.4 mSv and 10.3
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8

Abiodun, Ibrahim Olanrewaju, Nuruddeen Abdulkareem Muhammad, and Onaolapo Raheem Isiaka. "Evaluation of outdoor background ionizing radiation level around radiological sections in Federal Teaching Hospital Gombe, Gombe State Nigeria." World Journal of Advanced Research and Reviews 19, no. 2 (2023): 196–203. https://doi.org/10.5281/zenodo.10830182.

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This study presents the results of ambient radioactive radiation, radiation health hazard indices and excess lifetime cancer risk estimation around radiological sections in Federal Teaching Hospital Gombe, Gombe State, Nigeria using a well calibrated Rados-200 meters and a Global Positioning System (Garmin 765). The mean annual outdoor equivalent dose of 0.078 mSv/y. was measured. Mean annual outdoor effective doses of 0.1358 mSv/y. and 0.0950 mSv/y. were computed respectively, that were less than 1 mSv/y. maximum recommended limit for general public. The mean outdoor ELCR values of 0.3330 x10
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9

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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10

Addison, E. C. D. K., R. A. Opoku, C. E. B. N. Addison, and W. I. Aniagyei. "ASSESSMENT OF RADIATION DOSE RATE LEVELS AND RADIATION RISK AT THE COBALT -60 UNIT, KOMFO ANOKYE RADIOTHERAPY CENTER, GHANA." European Journal of Technology 5, no. 1 (2021): 34–51. http://dx.doi.org/10.47672/ejt.877.

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Purpose: A study was conducted to estimate the Annual Effective Dose Equivalent (AEDE) and Excess Lifetime Cancer Risk (ELCR) caused by the presence of an artificial cobalt-60 radioactive source producing ionizing radiation levels within the radiotherapy facility at Komfo Anokye Teaching Hospital (KATH) in Ghana. This study validated the safety of cobalt-60 radioactive sources, as well as the notion of calculating the Annual Effective Dose Equivalent (AEDE) and Excess Lifetime Cancer Risk (ELCR), which contributed to reducing occupational and public exposures inside the facility.
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11

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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12

Ndubisi, Orlunta, Aloysius, and Agbonifo, Eseosa Melody. "Evaluation of Background Ionizing Radiation in 20 Selected Locations within Rumuosi and Choba Village, Port-Harcourt, Rivers State, Nigeria." Asian Journal of Advanced Research and Reports 19, no. 3 (2025): 433–44. https://doi.org/10.9734/ajarr/2025/v19i3955.

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The evaluation of background ionizing radiation in 20 selected locations within Rumuosi and Choba villages, Port Harcourt, Rivers state, was accomplished using a nuclear radiation detector (GQ GMC-300E plus), and global positioning system (GPS) used to measure the geographical coordinates of the sample points. The exposure rate, absorbed dose, annual effective dose and excess lifetime cancer risk parameters had average mean values of 0.010±0.0013 mR/h and 0.0100±0.0094 mR/h, 87.00±11.6 nGy/h and 87.00±8.20 nGy/h, 0.133±0.06 mSv/y and 0.133±0.01337 mSv/y and 0.47±0.063×10ˉ³ and 0.47±0.04×10ˉ³ f
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13

Kasic, Amela, Amira Kasumovic, and Muhamed Hodzic. "Measurement of radon activity concentration in elementary schools in Tuzla, Bosnia and Herzegovina." Nuclear Technology and Radiation Protection 39, no. 3 (2024): 243–49. https://doi.org/10.2298/ntrp2403243k.

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In this paper, the results of measurements of indoor radon activity concentration in fourteen elementary schools in Tuzla, Bosnia and Herzegovina, are presented. Measurements were performed with CR-39 solid-state nuclear track detectors. Radon activity concentration in investigated locations was 6.8-143 Bqm-3. To assess the indoor radon hazards for people, the annual effective dose, excess lifetime cancer risk, and the relative risk of lung cancer were estimated.
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14

Mdekil, Abdullah Swadi, Wisam Thamer Al-Mayah, and Wisam Basim Al-Tmemy. "Calculation the Excess Lifetime Lung Cancer Risk and Human Health Risk Assessment by Inhalation of Radon Gas in the Health Centers of Al–Hay City in Wasit, Iraq Using LR-115 Detector." Cross Current International Journal of Medical and Biosciences 6, no. 04 (2024): 84–91. http://dx.doi.org/10.36344/ccijmb.2024.v06i04.001.

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In this paper, the technology used to measure radon concentrations in 8 health centers of Al- Hay city in Wasit, Iraq (December 2019) is one of the types of solid state nuclear track detectors, LR-115. After that, the annual effective dose rate and the excess lifetime cancer risk were calculated for the selected positions in the study area. The detectors were exposed to radon for 45 days, the etched detectors, using an optical microscope, to calculate the track densities, essentially depend on the alpha ray emitted from radon which later on easy converted to radon concentration values. Radon c
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15

Aniekwe, Onyekachi Godwin, Ezekiel O. Agbalaga, and Gregory O. Avwiri. "Measurement of Background Ionizing Radiation Around Beta Glass Plc and Its Environs, Ughelli, Delta State, Nigeria." RESEARCH JOURNAL OF PURE SCIENCE AND TECHNOLOGY 6, no. 3 (2024): 91–104. http://dx.doi.org/10.56201/rjpst.v6.no3.2023.pg91.104.

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A study of the background ionizing radiation levels to helps monitor the impact of human activities on the environment, such as mining, farming, glass bottle production and power generation has been carried out around Beta glass Plc and Transcorp Power LTD using a hand-held gamma spectrometer (GAMMA-SCOUT; Geiger counter Radiation meter) and GPS (Oregon-450 Garmin). The study of the BIR levels was carried out between June to July, 2022. The average measured exposure rates (AV. BIR) ranged from 0.007 mRh-1 to 0.013 mRh-1, with 0.010±0.0002 mRh-1 as the average. The estimated mean outdoor absorb
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16

Madaki, Abubakar, Abdulkarim Hamza, Sadiq Aliyu, and Jamilu Ari. "Simulation of excess lifetime cancer risk due to the presence of radon in groundwater in Wamba town of Wamba local government area, Nasarawa state, Nigeria." Journal of Nuclear and Radiation Sciences 3, no. 1 (2024): 1. http://dx.doi.org/10.5455/jnrs.2024.01.001.

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The measurements of Radon concentration in ten groundwater (4-wells and 6-boreholes) from Wamba town of Wamba Local Government Area of Nigeria had been carried out. The annual effective dose (AED) and the Excess Lifetime Cancer Risk (ELCR) due to ingestion of the groundwater was established to ascertain the risk outcome from the samples. Radon concentration was detected using RAD7. The minimum Radon concentration was 0.146 Bql-1 while the maximum was 0.474 Bql-1 with mean average of 0.3134 Bql-1 which are within the United States Environmental Protection Agencies (USEPA) 11.1 Bq/L recommendati
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17

B. E. Eze, P. O. Ushie, A. A. Abong, F. I. Ezema, and S. O. Aisida. "Evaluation of background ionizing radiation to estimate effective dose and excess lifetime cancer risk from two major dumpsite in Calabar, Nigeria." World Journal of Advanced Research and Reviews 26, no. 1 (2025): 1449–59. https://doi.org/10.30574/wjarr.2025.26.1.0983.

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By using a chamber radiation survey meter, meter rule to measure distance between data points, and a geographical positioning system (GPS) to measure the coordinate of the study area, the study of background ionizing radiation levels in Calabar the metropolis has been conducted to assess the effective dose to the body's organs and tissues as well as the excess lifetime cancer risk. The elevation level of the chamber survey meters was maintained at 1.0 meters above the ground. The average BIR absorbed dose rate, annual effective dose equivalent, excess lifetime cancer risk, and effective dose t
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18

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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19

Yilmaz, Aysenur, Sibel Yıldız, Ahmet Çelik, and Uğur Çevik. "Determination of Heavy Metal and Radioactivity in Agaricus campestris Mushroom Collected from Kahramanmaraş and Erzurum Proviences." Turkish Journal of Agriculture - Food Science and Technology 4, no. 3 (2016): 208. http://dx.doi.org/10.24925/turjaf.v4i3.208-215.596.

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In this study, radioactivity and heavy metals accumulations in Agaricus campestris mushroom collected from Kahramanmaraş and Erzurum provinces was determined. HPGe gamma detector was used for the determination of radioactivity concentrations. Heavy metal content was measured using a ICP-MS. As radioactive element; natural (238U, 232Th 40K) and artificial radionuclide (137Cs) concentrations were determined. The values of the committed effective dose were calculated. Same measurements were made in soils. Absorbed dose and excess lifetime cancer risk were calculated. Amount of Mg, Al, Ca, Cr, Mn,
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20

Kareem Hashim, Abdalsattar, Laith S. Alhiti, Ali Abid Abojassim, Sally Yakoob Taher, and Ali Saeed Jassim. "Alpha radioactivity in Iraqi market foodstuff: Assessing annual effective dose and lifetime cancer risk." E3S Web of Conferences 583 (2024): 04013. http://dx.doi.org/10.1051/e3sconf/202458304013.

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In this study, integrated passive radon dosimeters with solid-state nuclear trace detectors (CR-39 and CN-85) were used to determine the annual effective dose and excess cancer risk for 25 different food samples in the Iraqi market. The dosimeters were deployed after four weeks of the required radiological equilibrium between radon and radium in the samples stored in sealed beakers. These caps were then quickly replaced with other caps equipped with detectors and stored for 70 days. After the detectors were removed from the samples, an electrochemical etching process was performed in a water b
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21

Kurnaz, Aslı, Şeref Turhan, Aybaba Hançerlioğulları, et al. "Natural radioactivity, radon emanating power and mass exhalation rate of environmental soil samples from Karabük province, Turkey." Radiochimica Acta 108, no. 7 (2020): 573–79. http://dx.doi.org/10.1515/ract-2019-3188.

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AbstractIn this study, content of natural radionuclides (226Ra, 232Th and 40K) and radon emanating power and radon mass exhalation rate of surface soil samples collected around industrial province Karabük in which the first iron steel plant was built in 1937 were determined by high-resolution γ-ray spectrometry with a high purity germanium detector. The average activity concentration of 226Ra, 232Th and 40K in soil samples were measured as 30 ± 2, 28 ± 2 and 251 ± 20 Bq kg−1, respectively. The average value of radon emanating power and mass exhalation rate of soil samples were found as 31 % an
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22

Hussein, Mayameen, Jabbar Jebur, and Hussain Badran. "Measurement of Natural Radioactivity Concentrations in Local and Imported Truffle Samples." University of Thi-Qar Journal of Science 12, no. 1 (2025): 210–15. https://doi.org/10.32792/utq/utjsci/v12i1.1364.

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In this study, gamma spectroscopy with NaI(Tl) was used to measure the specific activity of natural radio nuclides uranium, thorium, uranium potassium, radium equivalent, annual effective dose, and excess lifetime cancer risk (ELCR) of truffles from the north of Iraq to the south and from the east to the west, as well as samples that were brought in from other countries. The average concentrations of 226Ra, 238U, 232Th, and 40K were 1.32±0.089 Bq/kg, 1.37±0.092 Bq/kg, 1.56±0.119 Bq/kg, and 23.31±0.958 Bq/kg, respectively. It was found that the gamma ray hazard scores and the extra lifetime can
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23

Muhammad, Mubarak B., A. A. Safana, Yakubu Mohammed, and Usman Muhammed Dauda. "Determination of excess lifetime cancer risk due to gamma radiation exposure in Bompai area, Kano State, Nigeria." Dutse Journal of Pure and Applied Sciences 10, no. 4a (2025): 283–94. https://doi.org/10.4314/dujopas.v10i4a.26.

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This study assessed the levels of gamma radiation exposure and associated excess lifetime cancer risk (ELCR) in Bompai area, Kano State, Nigeria. Gamma dose rate measurements were taken at 500 points across residential, educational, healthcare, industrial, and commercial sites using Radiation Alert Inspector. The results showed a mean gamma dose level of 17.794×10–3 μSv/hr, corresponding to an annual effective dose (AED) of 380.2×10–6 mSv/yr and an ELCR of 1500×10–6. Comparison with UNSCEAR guidelines revealed that the estimated AED and ELCR values are within safe limits, indicating no imminen
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24

Raymond, Msughter Agaku, Egwuchukwu Onah Precious, Omenka Ode Samuel, et al. "Health risk assessment of radiation dose level in oranges and mangoes fruits from farms in Benue State, Nigeria." World Journal of Advanced Research and Reviews 23, no. 3 (2024): 1982–90. https://doi.org/10.5281/zenodo.14958746.

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The health risk and radiation dose level in Oranges and Mangoes due to ingestion from farm locations in Benue State was assessed. A total of fifty (50) samples were collected in five different farm locations in Benue State, the samples were washed with distilled water to remove dirt, a radiation meter was placed 10cm from the fruits and measurements were taken for 30 seconds, background radiation levels and radiation dose level from the fruits were measured and calculated. The results showed that the radiation dose level for Oranges ranged from 1.489 to 2.365 mSv/hr and 1.122 to 1.899 mSv/hr f
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25

Hossain, Shahadat, Mohammad Sohelur Rahman, and Selina Yeasmin. "Environmental Radioactivity Monitoring and Assessment of Excess Lifetime Cancer Risk to People in Demra Thana, Dhaka, Bangladesh." ABC Research Alert 7, no. 3 (2019): Bangladesh. http://dx.doi.org/10.18034/ra.v7i3.269.

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Objective: The quality of life is influenced by the environment quality and one of the major factors that require a continuous monitoring is the level of radiation. Radiation protection is required to minimize the health effects due to radiation. It is essential to know real-time gamma radiation dose rates and calculation of annual effective dose of a country in order to generate the baseline database.&#x0D; Methods: The radiation monitoring was performed using real-time portable digital radiation monitoring device. This real-time digital portable radiation monitoring device meets all European
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26

Abojassim, Ali Abid, and Hayder Hussan Neama. "Radiological and chemical risk assessment from uranium concentrations in groundwater samples collected from Al-Kufa area, Iraq." Water Supply 20, no. 8 (2020): 3194–206. http://dx.doi.org/10.2166/ws.2020.207.

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Abstract In nature, uranium is composed of three isotopes, 238U, 235U, and 234U. Emitting alpha particles leads to radionuclides decay. The aim of this work is to set up a database for uranium concentrations in groundwater samples collected from Kufa city, Al-Najaf governorate, Iraq. Twenty four samples have been examined for detecting the presence of uranium levels using a CR-39 detector. The measured uranium concentrations were used to determine uranium isotopes with their ingested radiological toxicity risk (annual effective dose of uranium isotopes and excess cancer risk) and chemical toxi
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27

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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28

Sowole, O., O. E. Olaniyi, and F. R. Amodu. "Evaluation of Primordial Radionuclides in Ocimum gratissimum and health Risk to the Consumers at Ewekoro Southwest of Nigeria." Journal of Applied Sciences and Environmental Management 24, no. 2 (2020): 367–72. http://dx.doi.org/10.4314/jasem.v24i2.24.

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Primordial radionuclides are transported in to the plants through the leaves and roots. Medicinal plants are widely used in Africa for prevention and treatment of diseases. Ocimum Gratissimum is medicinal plant that is so used in southwest of Nigeria due to its multifunctional traditional medicinal health uses and as spice in cooking. The research is to determine the radiological health risk of these primordial radionuclides to the consumers of Ocimum Gratissimum in the study area. Fresh leaves of the medicinal plant were plucked from ten (10) different locations at Ewekoro where mining of lim
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29

Olanrewaju, Abiodun, Nurudeen Mohammed AbdulKareem, and Isiaka O. Raheem. "ASSESSMENT OF RADIATION EXPOSURE LEVEL IN BLACKSMITHING WORKSHOP IN GOMBE, GOMBE STATE." FUDMA JOURNAL OF SCIENCES 4, no. 4 (2021): 19–25. http://dx.doi.org/10.33003/fjs-2020-0404-270.

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Measurement of terrestrial background ionizing radiation of blacksmith workshops of Gombe State, Nigeria was carried out using well-calibrated Geiger-Muller counter meters and a meter tape. The measured average exposure rate of two line-sections are 0.018±0.002 and 0.017±0.002 mRh-1. Estimated equivalent dose rates for the two line-sections are 1.50 and 1.45 mSvy-1. The average absorbed dose rates estimated in line-section one and line-section two are 154.94 and 149.97 nGyh-1 respectively. Annual effective dose equivalent (AEDE) of 0.48 mSvy-1 was obtained for outdoor exposure in line-section
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30

O, Aguko, Kinyua R, and Githiri G. "Natural Radioactivity and Excess Lifetime Cancer Risk Associated With Soil in Kargi Area, Marsabit – Kenya." American Journal of Physical Sciences 1, no. 1 (2023): 31–48. http://dx.doi.org/10.47604/ajps.1751.

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Purpose: The main aim of investigating activity concentrations together with distribution of radionuclides naturally in soil from Kargi was to evaluate radiological health hazard together with environmental radioactivity. Research shows radionuclides as one source of exposure due to radiation with detrimental effects health wise for populations found in areas considered high background radiation.&#x0D; Methodology: After collecting 117 soil samples from the area, analysis was done in order to measure their natural radioactivities due to 40K, 232Th and 226Ra radionuclides. Measurements method o
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Muhammad Nuruddeen Abdulkareem, Olanrewaju Abiodun Ibrahim, Muhammad Mudassir Usman, Raheem Isiaka Onaolapo, and Ibrahim Yakubu. "Assessment and evaluation of residents’ excess lifetime cancer risk of federal university of Kashere, Gombe State, Nigeria." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 1499–510. http://dx.doi.org/10.30574/wjarr.2023.19.1.1510.

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A Study of indoor and outdoor radiation dose rate level measurements for male and female hostels at the Federal University of Kashere Hostels, Gombe State, Nigeria, has been carried out with the radiation alert smart 4 to ascertain the radiation level. The measured radiation dose rates were used to calculate the excess lifetime cancer risk and assess radiological health risks. The mean annual outdoor and indoor equivalent doses were 0.025 mSv/y. and 0.370 mSv/y. were recorded, with less than 1 mSv/y. maximum recommended limit for the general public. The mean annual outdoor and indoor effective
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32

Okwor, Ibeabuchi E., Chidi E. Akulor, and Udoka M. Ukewuihe. "Investigation of natural radioactivity in soil of selected hospitals in Imo State, Nigeria." Science World Journal 18, no. 4 (2024): 633–40. http://dx.doi.org/10.4314/swj.v18i4.16.

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We measured the terrestrial activity contents, radiation doses; hazard indices and excessive lifetime cancer risk (ELCR) from primordial radionuclides (226Ra, 232Th and 40K) in 50 soil samples collected from the five selected hospitals within Imo State, Nigeria. Radioactivity measurements were carried out by the method of gamma-ray spectrometry with thallium doped sodium iodide [NaI(Tl)] detector. The mean activity values obtained for the radionuclides 226Ra, 232Th and 40K (respectively) in Federal Medical Centre, Owerri (FMC); General Hospital, Umuguma, Owerri West, (GHW); Neuroscience Hospit
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33

Mitrovic, Branislava, Dragana Todorovic, Jelena Ajtic, and Borjana Vranjes. "A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia." Journal of Agricultural Sciences, Belgrade 65, no. 1 (2020): 1–18. http://dx.doi.org/10.2298/jas2001001m.

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This review paper discusses the content of natural (40K, 238U, 226Ra, and 232Th) and artificial (137Cs) radionuclides in the soil of the mountains of Maljen, Tara and Kopaonik in the Republic of Serbia over 2002-2015. In addition, the paper gives radiation hazard parameters, i.e., radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external hazard index, annual gonadal dose equivalent, and excess lifetime cancer risk outdoors that we calculated from the obtained content of the natural radionuclides in the soil samples. We compared the parameters to previously publ
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34

Suleiman, Abdulhamid M., Adamu Yakubu, Jackson Karniliyus, Barnabas Benaiah, and Kabiru Mohammed. "Assessment of Occupational Radon Exposure and Associated Health Risks in Campus Facilities at Adamawa State College of Education, Hong, Nigeria." Physics Access 05, no. 01 (2025): 107–15. https://doi.org/10.47514/phyaccess.2025.5.1.012.

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This study evaluates the radon (Rn-222) concentration and associated health risks in the Campus facilities at Adamawa State College of Education, Hong, Nigeria. Radon concentrations were measured in 20 locations, including offices, laboratories, and residential quarters, using active radon monitoring devices (RAD7). The results revealed radon concentrations ranging from 8.6 Bq/m³ at the Deputy Provost’s office to 53.1 Bq/m³ at the Geography Departmental office, with a mean concentration of 20.3 Bq/m³. The effective dose rate (ER) ranged from 0.005 WLM/y to 0.031 WLM/y, while the annual effecti
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35

Ahmadu, M., Mustapha Suleiman Gimba, Habu Tela Abba, et al. "Assessment of Radiological Hazard Risks Due to Gross Alpha and Beta Radioactivity in Groundwater from Damaturu, North-Eastern Nigeria." Dutse Journal of Pure and Applied Sciences 10, no. 2b (2024): 153–63. http://dx.doi.org/10.4314/dujopas.v10i2b.16.

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Groundwater remains the largest source of potable water in Damaturu town. The study of gross radioactivity and its associated hazard risks in potable water is crucial to the health and well-being of the populace of the study area. Thus, radiological hazard indices such as annual effective dose, excess lifetime cancer risk, lifetime hereditary effect, and lifetime fatality cancer risk due to gross alpha and beta radiation from fifteen samples of borehole water have been evaluated. The mean values obtained from the analyses are 2531.48E–5 mSvy–1 &amp; 5637.92E–5 for AED, 12.18E–5 &amp; 23.26E–5
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36

Salehipour, Amineh, Akbar Eslami, Mohammad Mirzaee, et al. "Spatial distributions of natural radionuclide concentrations of bottled mineral water: doses estimation and health risk assessment." Environmental Health Engineering and Management 7, no. 2 (2020): 107–17. http://dx.doi.org/10.34172/ehem.2020.13.

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Background: Evaluation of the various types of water reveal that groundwater comprises 99% of the earth’s available fresh water. Many factors affect the type and degree of mineralization, as well as the natural radionuclides content in these types of water. The consumption of bottled natural mineral water, which comes from groundwater, among Iranians is gradually increasing. Therefore, the detection of high concentrations of radionuclides, associated with consumption of groundwater, is proposed as a public health problem in several areas. Methods: In this study, the activity concentration of n
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37

Mahamood, K. Nadira, and V. Prakash. "RADON, THORON AND THEIR PROGENY DISTRIBUTION AND ESTIMATION OF ANNUAL EFFECTIVE DOSE AND EXCESS LIFETIME CANCER RISK IN PANATHADY, KASARAGOD DISTRICT, KERALA." Radiation Protection Dosimetry 188, no. 1 (2019): 38–46. http://dx.doi.org/10.1093/rpd/ncz255.

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Abstract Radon and thoron are natural radioactive gases that tend to accumulate in the indoor environment and one of their major health implications is the ability to cause lung cancer. Present study comprises the quantification of radon and thoron activity concentrations and measurement of gamma exposure rates in different types of dwellings from the endosulfan-affected area, Panathady, Kasaragod district, Kerala. It is observed that, residents of this area were more prone to various diseases and health problems including cancer. The LR-115 type II solid state nuclear track detectors with sin
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Olowookere, C. J., N. N. Jibiri, E. O. Oyekunle, et al. "Effective Doses and Excess Lifetime Cancer Risks from Absorbed Dose Rates Measured in Facilities of Two Tertiary Institutions in Nigeria." Journal of Applied Sciences and Environmental Management 26, no. 10 (2022): 1705–12. http://dx.doi.org/10.4314/jasem.v26i10.14.

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This study was aimed at examining the radiation absorbed dose rate, annual effective doses and excess lifetime cancer risks of halls of residence, Radiotherapy Unit and Radiology Department of UI, UCH and UNIMEDTH respectively. Results of measurements show that the mean absorbed dose rate for male and female hall are 0.33 ± 0.05476 and 0.17 ± 0.05074 µSv h-1 respectively. The mean overall absorbed dose rates calculated for facilities studied are 0.269 ± 0.0992 µSv h-1, 0.121 ± 0.036 µSv h-1 and 0.123 ± 0.00931 µSv h-1 in UI, UCH and UNIMEDTH respectively. The mean annual effective doses record
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39

Bubu, A., and C. P. Ononugbo. "Evaluation of Health Risk Due to Exposure to Radiation in Some Hospitals in Rivers State." Asian Journal of Physical and Chemical Sciences 11, no. 1 (2023): 36–41. http://dx.doi.org/10.9734/ajopacs/2023/v11i1194.

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An external background ionization radiation was carried out in Our Lady Health of the sick hospital, Colworth Medical and Olive Tree Medical Diagnostics Port Harcourt. The background radiation reading was taken using the radiation alert meter (Digilert 200). The estimated value for the excess lifetime cancer risk from the three hospitals are lower than the world average, also the annual effective dose equivalent from Our Lady Health of the sick hospital, Colworth Medical Centre and Olive three medical center are lower than the world accepted value. The average absorbed dose rates are higher th
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S. B., Ibikunle, Ibikunle B. C., and Akinmoju C. "Estimation of Cosmic Effect on Background Nuclear Radiation." International Journal of Research and Review 9, no. 3 (2022): 83–88. http://dx.doi.org/10.52403/ijrr.20220310.

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The effect of cosmos on background nuclear radiation has been estimated with altitude on Idanre hill using the rad scanner model 500VBR. Five readings were taken in order to ensure accuracy and reliability of the result. The mean absorbed dose rate in air for ground, middle and top of the hill were estimated to be 322.67±35.80, 353.72±37.79 and 457.88 ± 40.30 nGy h-1 respectively. The absorbed dose rate and the effective dose equivalent increases with height which is an indication of nuclear radiation enhancement by the cosmos. The mean outdoor annual effective dose equivalent was obtained as
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41

Ilic, Sreten, Tatjana Golubovic, Natasa Pajic, Mirjana Djurasevic, and Aleksandar Kandic. "Analysing radionuclide content in soil samples and radiological risks in the clayey material surrounding of the “Zbegovi” deposit, Donje Crniljevo, Serbia." Nuclear Technology and Radiation Protection 35, no. 2 (2020): 154–64. http://dx.doi.org/10.2298/ntrp2002154i.

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This paper presents the results of analyses of radionuclide content in the samples of the surrounding soil and clayey material of ?Zbegovi? open-pit mine in Donje Crniljevo, Serbia. Samples from 78 sites were collected and prepared. The activity concentrations were determined for radionuclides: 238U, 232Th, 40K, 226Ra, and 137Cs. The mean values obtained are as follows: 23 Bqkg?1, 89 Bqkg?1, 372 Bqkg?1, 56 Bqkg?1, and 11 Bqkg?1, respectively. Concentrations of 238U, 40K, and 226Ra in the studied area do not deviate from the values obtained for the soil in Serbia. The concentration of 232Th in
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42

Rweyemamu, Mujuni, Peter Pantaleo, and Pius Shirima. "Preliminary Assessment of Indoor Radon Concentration and the Associated Health Risk to the Dwellers Surrounding Minjingu Phosphate Mine." Physical Science International Journal 29, no. 4 (2025): 18–27. https://doi.org/10.9734/psij/2025/v29i4886.

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Radon is a radioactive gas and a decay product of uranium. This gas poses a potential health risk to humans. This study aimed to assess preliminary indoor radon concentration at homes in Minjingu village and use the results of measurements to estimate the annual effective dose received by the dwellers and the associated excess lifetime cancer risk. The measurements were conducted in selected 22 houses using Professional Radon gas Monitor, AlphaGUARD from the Tanzania Atomic Energy Commission Laboratory. Results indicated that the radon concentration ranged from 33±4 Bq/m3 to 1080 ±57 Bq/m3 wit
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43

Anyimah-Ackah, Ekpor, Isaac W. Ofosu, Herman Erick Lutterodt, Godfred Darko, and David Okoh Kpeglo. "Excess lifetime cancer risk and committed effective dose associated with dietary exposure to radioactivity of natural origin from mining areas." Journal of Consumer Protection and Food Safety 16, no. 3 (2021): 219–25. http://dx.doi.org/10.1007/s00003-021-01332-2.

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44

Pursley, Jennifer, Kyla Remillard, Nicolas Depauw, et al. "Radiation Therapy for Stage IIA/B Seminoma: Modeling Secondary Cancer Risk for Protons and VMAT versus 3D Photons." Cancers 16, no. 4 (2024): 784. http://dx.doi.org/10.3390/cancers16040784.

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Radiation therapy (RT) is an effective treatment for stage IIA and select stage IIB seminomas. However, given the long life expectancy of seminoma patients, there are concerns about the risk of secondary cancers from RT. This study assessed differences in secondary cancer risk for stage II seminoma patients following proton pencil-beam scanning (PBS) and photon VMAT, compared to 3D conformal photon RT. Ten seminoma patients, five with a IIA staging who received 30 GyRBE and five with a IIB staging who received 36 GyRBE, had three RT plans generated. Doses to organs at risk (OAR) were evaluated
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45

Hady, Heiyam Najy, and Zahraa Mohammed Mashkor. "The Measurement of the Total Excess Lifetime Cancer Risk in Soil Samples from Tar Al-Najaf in Al-Najaf Al-Ashraf-Iraq." Pakistan Journal of Medical and Health Sciences 16, no. 11 (2022): 706–9. http://dx.doi.org/10.53350/pjmhs20221611706.

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The radioactivity of the dissected earth formations of Tar Al-Najaf in Al-Najaf Al-Ashraf Governorate has been studied, which is considered one of the most important archaeological areas in the province, as Tar Al-Najaf is one of the natural phenomena prominently present in the governorate; it cuts sharply to form a rocky cliff, as well as overlooks from the southern end of a plateau Al-Najaf and on the sea of Al-Najaf, in a clear and surprising way, Al-Najaf flew, by selecting 50 sites to take samples from the region. Spectral measurements were made using a thallium-activated sodium iodide de
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46

Isa, Sambo, Rafiu A. Abuh, and Ekong Godwin. "Assessment of Natural Background Radiation Exposure in the Federal Capital Territory of Nigeria." European Journal of Theoretical and Applied Sciences 2, no. 1 (2024): 480–91. http://dx.doi.org/10.59324/ejtas.2024.2(1).40.

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The detrimental effects of environmental contamination and deterioration on health are a worldwide concern and Nigerian environmental and public authorities continue to be concerned about the risk to public health. The water, the sky, construction materials and the earth's crust all release natural background radiation that contaminates the environment around us. Additionally, people are exposed to background radiation that comes from internal, cosmic, and terrestrial sources, although, the altitude determines the amount of cosmic radiation exposure, and high altitudes result in large radiatio
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47

Sambo, Isa, A. Abuh Rafiu, and Godwin Ekong. "Assessment of Natural Background Radiation Exposure in the Federal Capital Territory of Nigeria." European Journal of Theoretical and Applied Sciences 2, no. 1 (2024): 480–91. https://doi.org/10.59324/ejtas.2024.2(1).40.

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The detrimental effects of environmental contamination and deterioration on health are a worldwide concern and Nigerian environmental and public authorities continue to be concerned about the risk to public health. The water, the sky, construction materials and the earth's crust all release natural background radiation that contaminates the environment around us. Additionally, people are exposed to background radiation that comes from internal, cosmic, and terrestrial sources, although, the altitude determines the amount of cosmic radiation exposure, and high altitudes result in large radiatio
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48

Godwin, O. Igomah, E. Azogor Williams, B. Ekong Isaac, et al. "Estimation of Annual Effective Dose Equivalent and Excess Life Cancer Risk Across Major Markets in Northern Cross River State Nigeria." International Journal of Innovative Science and Research Technology (IJISRT) 10, no. 2 (2025): 1076–84. https://doi.org/10.5281/zenodo.14945030.

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Human exposure to ionizing radiation from natural and artificial sources is an unpreventable phenomenon on Earth. Radiation profile and dose rate for some markets in northern Cross River State, Nigeria have been ascertained using a 451p ion chamber survey meter, and the following parameters of radiation were calculated, absorb dose, annual effective dose equivalent, and excess life cancer risk. The dose rates measured within five major markets are as follows; Obanliku, 0.07&mu;sv/h to 0.18&mu;sv/h, Obudu, 0.03&mu;sv/h to 0.17&mu;sv/h, Bekwara, 0.06&mu;sv/h to 0.78&mu;sv/h Ogoja, market 0.05&mu
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49

Ijabor, B. O., A. O. Nwabuoku, A. F. Ozakpor, et al. "ASSESSMENT OF INDOOR AND OUTDOOR RADIATION DOSE LEVELS IN DELTA STATE POLYTECHNIC, OGWASHI-UKU, DELTA STATE, NIGERIA." Open Journal of Physical Science (ISSN: 2734-2123) 3, no. 2 (2022): 35–46. http://dx.doi.org/10.52417/ojps.v3i2.431.

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This study assessed the indoor and outdoor radiation dose levels of twelve (12) laboratories of Delta State Polytechnic, Ogwashi-Uku using a handheld inspector survey meter and estimation revealed that the average BIR, average annual equivalent dose rate (EDR), average annual absorbed dose rate (ADR), average annual effective dose equivalent (AEDE), average excess lifetime cancer risk (ELCR) is 0.0116 mR/hr, 0.9733 mSv/yr, 100.69 nGy/hr, 0.4940 mSv/yr and 1.755. Dose to organs showed that the testes received the highest dose, while the liver received the lowest dose indoors and outdoors respec
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50

Lee, Soo-Yong, Sang-Hun Lim, and Hee-Seok Kim. "Assessing the Radon Exposure Variability and Lifetime Health Effects across Indoor Microenvironments and Sub-Populations." Atmosphere 15, no. 8 (2024): 927. http://dx.doi.org/10.3390/atmos15080927.

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To assess the health impacts of radon exposure over a lifetime, in the present study, the annual effective dose (AED) and cumulative excess lifetime cancer risk (ELCR-C) were evaluated by considering various indoor microenvironmental exposures based on age-specific time–activity patterns using Monte Carlo simulations. Significant regional variations in indoor radon concentrations across the Republic of Korea were observed, with the highest levels found in schools and single detached houses. Based on the standard annual total of 8760 h spent indoors and outdoors, the AED varied by age group and
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