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Journal articles on the topic 'ELCR'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Sasada, Syusaku, Toshiki Tazoe, Tsuyoshi Nakajima, et al. "A common neural element receiving rhythmic arm and leg activity as assessed by reflex modulation in arm muscles." Journal of Neurophysiology 115, no. 4 (2016): 2065–75. http://dx.doi.org/10.1152/jn.00638.2015.

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Neural interactions between regulatory systems for rhythmic arm and leg movements are an intriguing issue in locomotor neuroscience. Amplitudes of early latency cutaneous reflexes (ELCRs) in stationary arm muscles are modulated during rhythmic leg or arm cycling but not during limb positioning or voluntary contraction. This suggests that interneurons mediating ELCRs to arm muscles integrate outputs from neural systems controlling rhythmic limb movements. Alternatively, outputs could be integrated at the motoneuron and/or supraspinal levels. We examined whether a separate effect on the ELCR pat

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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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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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Abbas, Hawraa Hashim, Mayyadah J. Tarbool, Abbas ., Hadi Abbas Al-Noamany, and Ali Abid Abojassim. "Assessment of Radiological Hazard to Background Radiations in Area about Kufa Cement Factory." NeuroQuantology 20, no. 4 (2022): 460–65. http://dx.doi.org/10.14704/nq.2022.20.4.nq22287.

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The purpose of this paper is to determine the background of radiation in 30 locations around Kufa cement factory at Al-Najaf governorate. Experimental processing were done using portable dosimeter that production by Inspector Exp+ company. As well as, radiological hazard such as Annual Effective Dose Equivalent (AEDE) in outdoor and Excess lifetime Cancer Risk (ELCR) due absorbed dose rate in outdoor (Doutdoor) in all sites were determined. The results show that the average values of Doutdoor, AEDE, and ELCR for study sites were 0.01185±0.003 μSv/h, 0.015±0.004 mSv/y, and (0.058±0.018)×10-3, r

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Sasada, Syusaku, Toshiki Tazoe, Tsuyoshi Nakajima, E. Paul Zehr, and Tomoyoshi Komiyama. "Effects of Leg Pedaling on Early Latency Cutaneous Reflexes in Upper Limb Muscles." Journal of Neurophysiology 104, no. 1 (2010): 210–17. http://dx.doi.org/10.1152/jn.00774.2009.

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The functional coupling of neural circuits between the upper and lower limbs involving rhythmic movements is of interest to both motor control research and rehabilitation science. This coupling can be detected by examining the effect of remote rhythmic limb movement on the modulation of reflex amplitude in stationary limbs. The present study investigated the extent to which rhythmic leg pedaling modulates the amplitude of an early latency (peak 30–70 ms) cutaneous reflex (ELCR) in the upper limb muscles. Thirteen neurologically intact volunteers performed leg pedaling (60 or 90 rpm) while simu

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Kim, MyongHwan, Seungho Lee, Dongmug Kang, et al. "O-328 ASSESSING LUNG CANCER RISKS AMONG VICTIMS IN ASBESTOS DAMAGE RELIEF SYSTEM IN KOREA: EXCESS LIFETIME CANCER RISK WITH EXPOSURE ASSESSMENT." Occupational Medicine 74, Supplement_1 (2024): 0. http://dx.doi.org/10.1093/occmed/kqae023.1234.

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Abstract Introduction The compensation criteria for lung cancer in Asbestos Damage Relief Act (ADRA) in Korea mainly rely on the presence of radiologic findings of asbestosis or pleural plaque. Although exposure criteria with asbestos fiber concentration in lung tissue is supplementary, it has not been applied. Because only 30% of asbestos related lung cancer has asbestosis or pleural plaque, substantial lung cancers might not be compensated by ADRA. Exposure criteria for lung cancer need to be applied in ADRA. Methods Data of 1,784 lung cancer compensation applicants during 2011-2021 were ana

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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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de Andrade, Vanda Lopes, Iolanda Ribeiro, Ana Paula Marreilha dos Santos, Michael Aschner, and Maria Luisa Mateus. "Carcinogenic Risk from Lead and Cadmium Contaminating Cow Milk and Soya Beverage Brands Available in the Portuguese Market." Journal of Xenobiotics 14, no. 2 (2024): 798–811. http://dx.doi.org/10.3390/jox14020045.

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Our previous work demonstrated the presence of lead (Pb) and cadmium (Cd) contamination in cow milk (CM) and soy beverages (SBs) in Portugal. These metals share carcinogenic mechanisms, suggesting at least additive effects. Our goals were to assess carcinogenic risks from Pb and Cd intake detected in various CM and SB brands on the Portuguese market and to determine the relative contributions of Pb and Cd. Furthermore, we modeled different consumption scenarios for various age/body weight groups to estimate cumulative Excess Lifetime Carcinogenic Risk (ELCR). ELCR was computed by multiplying c

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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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OGUNGBEMI, K. I., A. B. ADEGBOYEGA, and C. E. IROEGBU. "Environmental radioactivity around a mining site and its impact on the populace within specified distances from the site in southwest Nigeria." Romanian Journal of Biophysics 34, no. 1 (2024): 37–52. http://dx.doi.org/10.59277/rjb.2024.1.04.

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In this study, we quantify specific activity of 238U, 232Th, and 40K, from soils, water, and vegetables around limestone mining sites because of the dense urban settlement with high agricultural activities around the area. Annual effective dose (AED) was evaluated and used to estimate radiological hazard impact. Mean values of internal radiation hazard index (Hin) for soils, water, and vegetation are calculated and compared with those from literatures. The estimated mean excess lifetime cancer risk (ELCR) was obtained, too. The values of ELCR are under the world average value as recommended by

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Esi, E. O., A. O. Nwabuoku, E. C. Oduah, F. O. Ugbede, and J. C. Okpilike. "Evaluation of Indoor and Outdoor Radiation Levels and its Health Hazard at Dennis Osadebay University, Asaba, Delta State, Nigeria." Dutse Journal of Pure and Applied Sciences 10, no. 1c (2024): 11–19. http://dx.doi.org/10.4314/dujopas.v10i1c.2.

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This research designed at evaluating the indoor and outdoor background ionizing radiation dose equivalent levels at Dennis Osadebay University, Asaba Delta state. The study was carried out at fifteen different locations around the university campus using a portable GQ GMC-320 detector to measure outdoor and indoor equivalent dose rate of the university campus. The mean values of outdoor and indoor equivalent dose rate obtained are 0.135 μSv/hr and 0.142 μSv/hr respectively. These mean values are vaguely lower compared to 0.274 µSv/hr world average limit. The mean values of annual effective rad

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A. Z., Namadi, Agu M. N., and Ugbe R. U. "Dosimetric evaluation of terrestrial Gamma radiation and associated cancer risk in federal university Dutsin-Ma, Nigeria." Journal of Basics and Applied Sciences Research 3, no. 2 (2025): 27–38. https://doi.org/10.4314/jobasr.v3i2.3.

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This study evaluates natural radioactivity on FUDMA campuses to ensure radiological safety. Since natural radionuclides are always present in the environment, exposure to terrestrial gamma radiation is unavoidable. The research aimed to measure terrestrial gamma radiation dose rates (TGDR), calculate the annual effective dose (AED), and assess the excess lifetime cancer risk (ELCR). A digital radiation meter was used for measurements, while Microsoft Excel was used for data analysis.At the take-off campus, The highest AED was recorded at the school clinic (TOC-A5) with a value of 2.76 mSv/y, w

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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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Anekwe, U. L., and R. A. Onoja. "Assessment of Environmental Radioactivity Level and its Health Implication in Imiringi Community Bayelsa State, Nigeria." Journal of Applied Sciences and Environmental Management 24, no. 6 (2020): 1045–50. http://dx.doi.org/10.4314/jasem.v24i6.16.

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A total forty two (42) sampled points were investigated for radioactivity level and health implication using standard method. The exposure dose rate ranged from 14 to 32μRh-1 with an average value of μ23Rh-1. Dose rate and equivalent dose rate ranged from 121.8 to 278.4nGyh-1 and 1.18 to 2.69mSvy-1 respectively. The average value of the indoor annual effective dose equivalent (AEDE), outdoor AEDE, and excess lifetime cancer risk (ELCR) were computed to be 0.936 mSvy-1, 0.311 mSvy-1 and 0.810 x 10-3 respectively. Analysis of dose to human organs; testes and ovaries, were 0.61 and 0.43 mSvy-1 re

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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. Methodo

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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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Lee, Eun-Soo, and Young-Ki Kim. "Asbestos Exposure Level and the Carcinogenic Risk Due to Corrugated Asbestos-Cement Slate Roofs in Korea." International Journal of Environmental Research and Public Health 18, no. 13 (2021): 6925. http://dx.doi.org/10.3390/ijerph18136925.

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Asbestos-cement slate roofs are one of the most common environmental causes of asbestos exposure. However, few studies have examined residential asbestos-cement slate-related exposure and its effects on human health. This study was performed to evaluate cumulative asbestos exposure levels and to calculate the Excess Lifetime Cancer Risk (ELCR) of residents of asbestos-cement slate-roofed houses. We reviewed previous Korean literature to estimate the concentration of airborne asbestos from asbestos-cement slate roofed buildings. Finally, eight studies were selected, and a pooled analysis was pe

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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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Abdulkarim, M. S., A. A. Nurudeen, and O. O. Abdullateef. "Determination of annual effective dose equivalent and the excess lifetime cancers risk in water samples from a mining site in Jayfi, Pago Tungan Goro of Minna, Niger State, Nigeria." Dutse Journal of Pure and Applied Sciences 9, no. 3b (2023): 232–39. http://dx.doi.org/10.4314/dujopas.v9i3b.24.

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Mining industry in Nigeria provides economic benefit of wealth creations and employment opportunities, however, the industry is associated with negative health impact to miners and the surrounding communities resulting from mining processes. Gross alpha and beta radionuclide activity of water sources from Jayfi, Pago of Tungan Goro, Minna, Niger state was carried out. Eleven water samples were collected from the farming, residential/commercial, and industrial zones in the community and were analyzed using the protean instrument corporation (PIC) MPC 2000DP, single channel proportional counters

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Mohammed, Mohammed A., Tabarak S. Hashesh, Faisel G. Mohammed, Rand A. Hayder, and Maryam H. Ali. "Use GIS technical to draw of the background radiation in selected soil samples in the Najaf sea area." E3S Web of Conferences 633 (2025): 02005. https://doi.org/10.1051/e3sconf/202563302005.

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The main objective of the current study is to measure and obtain the background radiation levels in soil samples taken from the Najaf Sea area where most of the soil samples were taken there. In this work we utilized an FS-600 dosimeter to measure the radiation. The radiation dose (D), the annual effective dose (AED) and lifetime cancer risk (ELCR) of each of the samples were calculated. Finally, the GIS technology was used to map the studied primary outcomes. The soil samples had an average background radiation value of 0.161 microsieverts/hour (μSv/h), 0.126 millisieverts/year (mSv/y), and 0

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Sumi, I. K., M. S. Rahman, K. N. Sakib, M. M. Tasnim, and S. Yeasmin. "Outdoor Environmental Radiation Monitoring and Estimation of Radiation Risk on Public in New Market Thana, Dhaka, Bangladesh." Journal of Scientific Research 13, no. 3 (2021): 879–90. http://dx.doi.org/10.3329/jsr.v13i3.53112.

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The Real-time outdoor environmental gamma radiation (RTOEGR) dose rates were monitored at New Market Thana in Dhaka city to generate a baseline database that would help to know any deviation after operation of Rooppur NPP. The RTOEGR monitoring was carried out using a digital portable radiation monitoring device (DPRMD). The RTOEGR dose rates at the area of New Market Thana were ranged from 0.103 ± 0.004 µSv/h to 0.168 ± 0.007 µSv/h with an average of 0.135 ± 0.004 µSv/h. The public's annual effective doses were calculated based on RTOEGR dose rates, and those were varied from 0.181 ± 0.007 mS

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Alebadi, Shireen N., Wedyan Mohammed Torki, Ali Saeed Jassim, and Hadeel Kamil Khaleel. "Environmental biological radiation hazards (ELCR, AED) from background radiation in vitamins consumed by pregnant women in Iraq." E3S Web of Conferences 633 (2025): 01006. https://doi.org/10.1051/e3sconf/202563301006.

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This study aims to assess the background radiation levels of dietary supplement samples utilised by pregnant women in Iraq. The D, AED, and ELCR values for twenty dietary supplements from this region. The D values (in μSv/h) are (0.15 ± 0.003 μSv/h). The radiation dose outputs from the aforementioned investigations are compared with a safe limit of 0.247 μSv/h established by UNSCEAR 2008 and NCRP 2009. The radiation dosage for all samples in the present investigation unequivocally remains within acceptable thresholds. Furthermore, the AED values derived from μSv/h are (1.290 ± 0.026 mSv/y), wh

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Adrian, Anaceth, Frank Kisinza, Maria Amma, and Amos Ntarisa. "Indoor Radon Survey in Some Buildings of Mkwawa University College of Education." Radiation Science and Technology 11, no. 1 (2025): 12–22. https://doi.org/10.11648/j.rst.20251101.12.

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Background: Radon is a radioactive gas that is found all over the world and is well-known for its capacity to induce lung cancer. Purpose: This study aimed at the determination of indoor radon and its association with the excess lifetime cancer risk (ELCR) and annual effective dose in Mkwawa University College of Education (MUCE). Methods: The measurements of indoor radon concentrations were carried out using radon eye. Results: It was found that the indoor radon concentrations ranged from 0-55.7±4.0 Bq/m&lt;sup&gt;3&lt;/sup&gt; with an arithmetic mean of 12.2±3.5 Bq/m&lt;s

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Mohamed, Mustapha Abu, and Sillah Mohamed. "Assessment of Indoor and Outdoor Environments Ionizing Radiation Exposure Levels at Fourah Bay College Laboratories and Workshops, University of Sierra Leone." International Journal of Recent Innovations in Academic Research 8, no. 9 (2024): 1–7. https://doi.org/10.5281/zenodo.13777831.

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This study was an attempt to assess indoor and outdoor radiation equivalent dose rates in six laboratories and four workshops at Fourah Bay College, University of Sierra Leone in order to determine corresponding Annual Effective Dose Equivalent (AEDE) and assess the Excess Life-time Cancer Risk (ELCR) of students, staff and other users of the laboratories, workshops and their immediate neighborhood. The average values recorded for the indoor and outdoor equivalent dose rate, AEDE and ELCR are (0.20 µSv/h and 0.10 µSv/h), 1.40 mSv/y and 0.18 mSv/y) and (  respectively while the

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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, 0.07μsv/h to 0.18μsv/h, Obudu, 0.03μsv/h to 0.17μsv/h, Bekwara, 0.06μsv/h to 0.78μsv/h Ogoja, market 0.05&mu

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Oliveira, Anamaria Siriani de, Carina Maria de Souza Freitas, Francisco Henrique Monaretti, Francislei Ferreira, Reinaldo Noguti, and Fausto Bérzin. "Avaliação eletromiográfica de músculos da cintura escapular e braço durante exercícios com carga axial e rotacional." Revista Brasileira de Medicina do Esporte 12, no. 1 (2006): 11–15. http://dx.doi.org/10.1590/s1517-86922006000100003.

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O conhecimento da atividade eletromiográfica produzida durante a realização de exercícios para o ombro pode auxiliar na determinação de sua aplicabilidade clínica. O objetivo desta pesquisa foi avaliar a influência da direção da carga e condição da extremidade na atividade elétrica de músculos da cintura escapular e membro superior durante a realização de exercícios com a extremidade distal fixa e carga externa axial (EFCA) e extremidade livre com carga externa rotacional (ELCR). Foram selecionadas 20 voluntárias (23,2 anos ± 0,9) sedentárias. Foram avaliados os mm. tríceps do braço, bíceps do

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Ademoh, Bello Aisha, Usman Rilwan, and Musa Yusuf. "Assessment on Radiation Hazard Indices from Selected Dumpsites in Lafia Metropolis, Nasarawa State, Nigeria." Journal of Oncology Research 4, no. 1 (2021): 20. http://dx.doi.org/10.30564/jor.v4i1.3840.

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This research reports an assessment of ionizing radiation in some chosen Dumpsites in Lafia Local government area of Nasarawa State. Ionizing radiation measurement was conducted at four Dump sites. The survey was done using a radiation survey meter (Radex one Outdoor 55130719 NA). Radiation exposure rate in micro sievert per hour (μSvhr-1) was measured. Readings were taken by placing the detector at gonad level about 1 meter above the ground. Result showed that the average annual effective dose rate in the selected dumpsites were 0.22 mSv/yr for Lafia modern market, 0.17 mSv/yr for dumpsite op

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Dimovic, Slavko, Boris Vakanjac, Ivana Jelic, Milena Rikalovic, Vesna Ristic-Vakanjac, and Radoje Bankovic. "Assessment of environmental radioactivity and health hazard at Stara Planina region." Nuclear Technology and Radiation Protection 35, no. 4 (2020): 354–60. http://dx.doi.org/10.2298/ntrp2004354d.

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The aim of the study was to evaluate the potential risks of radiation near abandoned uranium mines, tailing dumps, or uranium deposits on Mountain Stara Planina, Serbia. For risk assessment several parameters were determined: radium equivalent activity, Raeq, external hazard index, Hex, gamma radiation absorbed dose rate, D, annual effective dose on background outdoor gamma exposure, AEDoutdoor, and excess lifetime cancer risk, ELCR. Obtained results showed that all the samples, except one, have the Raeq value up to two times higher than the reference limit. The Raeq of the sample from the Mez

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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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Mellawati, June, and Eddy Nurtjahya. "Natural radionuclide content in horticulture plants from former tin mining land and health risk assessment: A case study on Bangka Belitung Island, Indonesia." IOP Conference Series: Earth and Environmental Science 1297, no. 1 (2024): 012097. http://dx.doi.org/10.1088/1755-1315/1297/1/012097.

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Abstract As a tin producer in Indonesia, Bangka Belitung has abandoned tin mining land containing natural radionuclides, and its use for cultivating horticultural crops has health risks. The aim of the research was to determine the contribution of former tin mining land to natural radionuclide contamination in horticultural products and to assess the radiation hazards by determining the annual effective dose and excess lifetime cancer risk (ELCR). The methodology includes sampling vegetables, fruit, and tubers from several villages in Bangka. Measurement of natural radionuclides using a Gamma

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G.O, Igomah,, Osahon, O, Eze, B.E, Ekong, I. B, and Azogor, W.E. "Assessment of Background Gamma Radiation Levels Across Major Markets in Southern Senatoria District of Cross River State, Nigeria." Asian Journal of Physical and Chemical Sciences 12, no. 1 (2024): 49–62. http://dx.doi.org/10.9734/ajopacs/2024/v12i1219.

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Human exposure to ionizing radiation from natural and artificial sources is unpreventable phenomenon on earth. Radiation profile and dose at for some markets in Cross River State, Nigeria have been ascertained using 451p ion chamber survey meter and the following indices of radiation absorb dose, annual effective dose equivalent, and excess life cancer risk, were calculated. the dose rate measures at the seven market are as follows; Biase 0.02\(\mu\)sv/h to 0.09\(\mu\)sv/h, Akamkpa 0.02\(\mu\)sv/h to 0.09\(\mu\)sv/h, Odukpani 0.02\(\mu\)sv/h to 0.09\(\mu\)sv/h marian market 0.06\(\mu\)sv/h to

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Abdel Gawad, Ahmed E., Khaled G. Ali, Adel A. Abdel Wahed, et al. "Excess Lifetime Cancer Risk Associated with Granite Bearing Radioactive Minerals and Valuable Metals, Monqul Area, North Eastern Desert, Egypt." Materials 15, no. 12 (2022): 4307. http://dx.doi.org/10.3390/ma15124307.

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The present work is concerned with assessing the cancer risk contributed by the studied granite types including valuable metals, such as Cu, Au, and Ba mineralization, as well as radioactive-bearing mineralization, such as monazite and zircon, in south Monqul at Wadi Makhrag El Ebel, north Eastern Desert, Egypt. The mineralization analyses illustrated that copper mineralization containing chrysocolla and tenorite minerals were restricted to the alteration zone, especially (argillic, phyllic, and propylitic) in monzogranite. However, barite veinlets had an ENE–WSW trend, while gold mineralizati

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FASANMI, Paulinah Oyindamola, Stephen Friday OLUKOTUN, Charity Adaeze ONUMEJOR, Pascal TCHOKOSSA, and Olayinka ADEGBEHINGBE. "RADIOLOGICAL ASSESSMENT OF GRAINS, VEGETABLES, FRUITS AND TUBER CROPS CULTIVATED IN OKEMESI TOWNSHIP, EKITI STATE, NIGERIA." Euroasia Journal of Mathematics, Engineering, Natural & Medical Sciences 8, no. 15 (2021): 87–96. http://dx.doi.org/10.38065/euroasiaorg.554.

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Exposure to radiation is a natural phenomenon in the human environment. This is received from naturally occurring radionuclides in water, air, soil and food. Ingestion is one of the two major pathways through which these nuclides enter the human systems. Radiological assessment of fruits, vegetables, grains and tuber crops cultivated and consumed in Okemesi township, Ekiti State has been carried out using a 76mm by 76mm lead-shielded Sodium Iodide detector (NaI(Tl)) located at the Centre for Energy, Research and Development (CERD), Obafemi Awolowo University, Ile-Ife, Nigeria. The mean activit

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Balami, Dennis Solomon, Luka Emmanuel Gabasa, Samaila Hassan, John Simon, and Muhammed Hassan. "Determination of Radon Concentration in Imported Tea Obtained From Maiduguri Monday Market using the Liquid Scintillation Counter Technique." Nigerian Journal of Physics 33, no. 4 (2024): 48–58. https://doi.org/10.62292/njp.v33i4.2024.295.

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This study investigates radon-222 concentrations in imported tea samples obtained from northeastern Nigeria's Maiduguri Monday Market using Liquid Scintillation Counting (LSC) techniques. Located in the Sudano-Sahelian zone of Borno State, the study area encompasses the Maiduguri Metropolitan Council and adjacent regions, characterized by distinct seasonal variations and semi-arid conditions. Five popular imported tea brands were analyzed using a Packard Tri-Card LSA 1000TR liquid scintillation counter, with samples prepared following standardized protocols. Results revealed varying radon-222

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Maulida, Puteri Tiara, Jeong Wook Kim, and Myung Chae Jung. "Environmental Assessment of Friable Asbestos from Soil to Air Using the Releasable Asbestos Sampler (RAS)." Toxics 10, no. 12 (2022): 748. http://dx.doi.org/10.3390/toxics10120748.

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The objectives of this study are to examine the feasibility of the releasable asbestos sampler (RAS) equipment for laboratory tests as an alternative to activity-based sampling (ABS), and to apply the equipment controlled by wind velocity and water contents in the field to asbestos-contaminated soils. Two asbestos-contaminated mines (the Jecheon mine and the Jongmin-ri mine) were selected. At each mine, 21 surface soils (0~15 cm) were sampled, the asbestos concentrations were analyzed, and then three representative sites, containing 0.25%, 0.50%, and 0.75% of asbestos in soils, were chosen to

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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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هشام محمود حامد أبوالزقالي, هشام محمود حامد أبوالزقالي. "مخاطر الإشعاع وتقييم مخاطر الإصابة بالسرطان في رواسب بحيرة التمساح، مصر". journal of King Abdulaziz University Marine Sciences 30, № 1 (2020): 1–16. http://dx.doi.org/10.4197/mar.30-1.1.

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. بحيرة التمساح من أكثر البحيرات إنتاجا للأسماك في مصر. تقع في منتصف قناة السويس وتبلغ مساحتها حوالي 16 كيلومتر مربع. تستقبل البحيرة حوالي 833000 متر مكعب يوميًا من مياه الصرف الصحي ومخلفات الصرف الصحي من الزراعة والصناعة والمصارف المنزلية. تركيزات نشاط النويدات المشعة الطبيعية؛ تم قياس 238U و232Th و 40K باستخدام مقياس الطيف الضوئي لأشعة جاما في 24 محطة تغطي كامل مساحة البحيرة والخليج الغربي. متوسط الأنشطة 238U و232Th و 40K كانت: 21.66 ± 11.20 و21.42 ± 11.68 و200.30 ± 141.10 بيكريل / كغ على التوالي. ومتوسطات عوامل الخطر الإشعاعي؛ معدل الجرعة الممتصة والفعالة (D)، المكافئ السنوي للجرعة الفعالة

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Waseem, Muhammad, Hannan Younis, Moustafa Salouci, et al. "Evaluation of Radiation Rates and Health Hazards from Different Cement Types in Pakistan." Atmosphere 15, no. 11 (2024): 1393. http://dx.doi.org/10.3390/atmos15111393.

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The raw materials of cement contain radioactive elements that come from natural sources. Members of the decay chains of uranium, thorium, and potassium radioisotope 40K are the primary sources of this radioactivity. The natural radionuclide concentration levels in cement differ greatly depending on different geographic areas. To estimate the radionuclides concentration in cement specimens from twelve diverse Pakistani companies, gamma-ray spectroscopy analysis was used in the study. 226Ra, 232Th, and 40K had activity concentration levels ranging from 18.08 to 43.18 Bq/kg, 16.73 to 23.53 Bq/kg,

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Bello, M. S., Umar Ibrahim, and D. Yusuf Samson. "Assessment of Radon-222 Concentration in Ground Water from Dogarawa, Zaria, Kaduna State, Nigeria." Dutse Journal of Pure and Applied Sciences 11, no. 1b (2025): 273–81. https://doi.org/10.4314/dujopas.v11i1b.29.

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Water is an essential component of life but unfortunately most people especially in rural settings don’t have knowledge of the radiological purity of the water they utilize. This research aims to characterize the ground water of Dogarawa for the presence of Radon-222 using Sodium Iodide (NaI) scintillation detector. Thirty (30) samples of ground water (well and borehole) were collected and analyzed for radon concentration using Tri-carb 1000 TR liquid scintillation analyzer. The Annual Effective Dose (AED) and Excess Life time Cancer Risk (ELCR) to the people in the community were calculated.

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Alatise, Olufunmilayo O., Tolulope O. Aluko, and Ayotunde A. Ajayi. "Radiological Risk Assessment of Building Materials Used in Federal College of Education (Technical) Akoka, Lagos State, Nigeria." Physics Access 04, no. 02 (2024): 95–99. http://dx.doi.org/10.47514/phyaccess.2024.4.2.011.

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Multiple building constructions necessitating a regular influx of different soils for building purposes within Federal College of Education (Technical) Akoka, in Lagos State, Nigeria spurred a radiological risk assessment of selected soil samples. Five (5) construction points were identified and ten (10) soil samples were collected. A gamma spectrometer was used to evaluate the natural radionuclides (226Ra, 232Th, and 40K) present in the soils. IAEA-certified standard materials of RGU-1, RGTh-1, and RGK-1 were used to determine the full peak efficiencies of gamma energies 609, 1120, and 1764 k

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Shatha Farhan Alhous, Ansam Fadil Showard, and Shaymaa Awad Kadhim. "Assessment of tracheobronchial and lung dose due to radon and thoron inhalation." Journal of the Pakistan Medical Association 74, no. 10 (Supple-08) (2024): S363—S367. http://dx.doi.org/10.47391/jpma-bagh-16-83.

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The main sources of natural background radiation are radon, thoron and their progeny, which may cause health risks to humans. Keeping in mind the importance of the subject, three samples each from 10 selected residential areas, including the centre of Babylon Governorate, Iraq, and its districts, were collected. Concentration of radon and thoron was measured using solid-state track detectors (CR-39). The arithmetic means of the concentration of radon and thoron were 47.367±19.56 and 133.246±16.585 Bqm-3, respectively; these values are considered safe when compared with the upper referencelevel

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Yani, Luka S., Gregory O. Avwiri, and Chinyere P. Ononugbo. "Assessment of Radiological Health Risks in Agricultural Soil Samples within Bitumen Belt of Ondo State, Nigeria." Asian Journal of Advanced Research and Reports 17, no. 10 (2023): 162–72. http://dx.doi.org/10.9734/ajarr/2023/v17i10541.

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The quality of agricultural soils within the bitumen deposit areas of Ondo State, Nigeria was investigated with a view to providing valuable information on the radioactivity parameters associated with the contamination of the sites by bitumen deposit. And to provide baseline data required for future radiological impact assessment of the environment during the development of the natural resource. Naturally occurring radionuclides (238U, 232Th and 40K) present in agricultural soil samples collected within the bitumen belt of Ondo State, Nigeria was measured using gamma spectroscopy. The radiolog

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Mim, Fabiha Shafi, M. S. Rahman, Shafi M. Tareq, and S. Yeasmin. "Assessment of Radiation Hazard on Public Health at Indoor and Outdoor Environment of DMCH Campus, Dhaka, Bangladesh." ABC Research Alert 8, no. 2 (2020): 69–77. http://dx.doi.org/10.18034/ra.v8i2.469.

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Objectives: The purpose of the study is to evaluate the excess life-time cancer risk (ELCR) of public in & around the Dhaka Medical College Hospital (DMCH) campus based on the real-time radiation monitoring data. Method: A real-time digital portable radiation monitoring device (GAMMA SCOUT) along with a Garmin eTrex Global Positioning System (GPS) device was used for radiation monitoring and location identification respectively. ArcGIS® software (Version 2.3) was used for mapping of the locations. Result: The measured dose rate in the indoor environment ranged from 0.05-71.21 µ

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N.H., Daburum, Mallo Y.I., and Akila S. "Assessment of Background and Soil Dumpsites Radioactivity in Plateau State, Nigeria." African Journal of Environment and Natural Science Research 6, no. 3 (2023): 143–57. http://dx.doi.org/10.52589/ajensr-qqeznfk7.

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Assessment of background and dumpsites radioactivity level plays a significant role in the protection of man from excessive radiation exposure. Exposure to high radiation levels causes a wide range of health problems such as cancer of the lung, bone and skin, kidney ailments and blood infections. The background radiation levels of 51 selected dumpsites (3 in each LGA) were obtained at 1m above it using a well-calibrated International Medcom CRM-100 Digital Radiation Monitor. Soil samples were also collected, packed, prepared and analysed with Gamma ray Spectrometer [NaI (Tl) detector]. The mea

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Abojassim, A. A., D. J. Lawi, and A. B. Hassan. "Radiological Risk to Inhalation of Thoron Gas from Medical Materials Samples Derived from Medical Plants in Iraq." Atom Indonesia 1, no. 1 (2024): 49–54. http://dx.doi.org/10.55981/aij.2024.1329.

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Pollution by thoron is one of the factors that is harmful to human health. Medical materials, especially those derived from plants, have natural ingredients which are a major source of natural radioactivity, thoron being one of them. Therefore, the presence of harmful radioactivity in these materials is a matter of concern. This study determined the concentrations of thoron (220Rn or radon-220) from 70 samples of medical materials derived from medical plants using a CR-39 detector. Samples are drugs (solid), skin creams, herbs, toothpaste, drugs (liquid), and cosmetic products found in Iraqi p

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Samuel, OO Jerry IT and Stephen OM. "Measurement of Background Radiation at Oracle Plastics and Sacks Company in Makurdi, Benue State." Environmental Science Archives 3, no. 1 (2024): 37–46. https://doi.org/10.5281/zenodo.10448251.

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The background radiation level of Oracle Plastics and Sacs were investigated and measured using the Radiation Alert Inspector. A total of seven (7) units/departments within the company were considered: marketing, clinic waiting room, entrance, sack section, leather/shopping bag, polyvinyl chloride (PVC), and injection mould units, and data were obtained from those units. The investigation revealed that the mean exposure dose rate of the background radiation within the company was 0.019 ± 0.0062 µSv/hr, and the mean annual exposure dose equivalence was 0.17 ± 0.0028 mSv/yr.

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Çetin, Ender, Naim Sezgin, and Semih Nemlioglu. "A Comprehensive Analysis of Radiological Parameters in Historical City Soil: The Case of Mardin, Turkiye." Applied Sciences 15, no. 9 (2025): 4792. https://doi.org/10.3390/app15094792.

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This study evaluates the levels of natural radioactivity in surface soil samples across all districts of Mardin Province, Turkiye, using data from the Turkish Environmental Radioactivity Atlas. The activity concentration levels of Ra-226, Th-232, K-40, and Cs-137 were re-mapped, and radiological parameters (Raeq, DR, Hex, AEDE, AGDE, and ELCR) were calculated for an environmental risk assessment. The average Ra-226 concentration (33.66 Bq·kg−1) exceeded the Turkiye average but remained near the UNSCEAR global median. The Th-232 concentration (29.37 Bq·kg−1) was lower than both reference values

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Wee, Eugene J. H., Muhammad J. A. Shiddiky, Melissa A. Brown, and Matt Trau. "eLCR: electrochemical detection of single DNA base changes via Ligase Chain Reaction." Chemical Communications 48, no. 98 (2012): 12014. http://dx.doi.org/10.1039/c2cc35841g.

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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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Esi, E. O., and O. Akpoyibo. "Geophysical survey and radiometric assessment of aquifer strata and vulnerable groundwater quality of Ukwuani Ommunities in Delta State." Scientia Africana 23, no. 2 (2024): 88–103. http://dx.doi.org/10.4314/sa.v23i2.9.

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The study assessed the aquifer strata and groundwater quality of Obeti, Umuaja, and Ebedei communities of Ukwuani, Delta State, Nigeria using electrical resistivity technique and sodium iodide [Na(TI)] detector. The electrical resistivity technique revealed that lithology has five to six geoelectric strata, which ranged from topsoil to clay formations with thickness of 0.6 to 6.0 m sits and aquifer resistivity range of 182.1– 6032.0 Ωm with depth of 29–70 m. These ranges indicate significant changes in the aquifer level and sufficient reservoirs for groundwater. To assess the activity concentr

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