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Relevant bibliographies by topics / Naturally occurring radioactive materials / Dissertations / Theses

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Dissertations / Theses on the topic 'Naturally occurring radioactive materials'

Author: Grafiati

Published: 24 March 2023

Last updated: 26 July 2025

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1

Nelson, Andrew Wyatt. "Naturally occurring radioactive materials associated with unconventional drilling for natural gas." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/5579.

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As unconventional drilling has emerged as a major industry in the US and around the world, many environmental health and pollution risks have surfaced. One emerging concern is the risk of environmental contamination arising from unconventional wastes that are enriched in naturally-occurring radioactive materials (NORM). Although NORM has been a well-documented contaminant of oil and gas wastes for decades, there are new challenges associated with unconventional drilling. This thesis discusses several of these challenges, focusing on NORM from black shale formations. Chapter 1 provides backgrou

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2

Alharbi, Sami Hamad. "Measurements and monitoring of naturally occurring radioactive materials for regulation." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/98122/1/Sami_Alharbi_Thesis.pdf.

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This project investigated the measurement of naturally occurring radioactive material. Such measurements are usually conducted to demonstrate compliance with the national and international requirements for radiation protection. The thesis reviewed the current regulation of these radioactive materials and identified the key regulatory challenges that relevant authorities face when implementing or establishing a regime for NORM. Limitations on the measurement of the release of radon (a radioactive gas) from surfaces were determined. The parameters influencing radon and thoron levels in indoor en

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3

Larijani, C. "Production and evaluation of 236gNp and reference materials for naturally occurring radioactive materials." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/814166/.

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This thesis is based on the development of a radiochemical separation scheme capable of separating both 236gNp and 236Pu from a uranium target of natural isotopic composition (~1 g uranium) and ~200 MBq of fission decay products. The isobaric distribution of fission residues produced following the bombardment of a natural uranium target with a beam of 25 MeV protons has been evaluated. Decay analysis of thirteen isobarically distinct fission residues were carried out using high-resolution γ-ray spectrometry at the UK National Physical Laboratory. Stoichiometric abundances were calculated via t

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4

Eitrheim, Eric Steven. "Characterization of wastes pertaining to naturally occurring radioactive materials (NORM) and the nuclear fuel cycle." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5464.

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Radioactive wastes from a range of sources are of great concern for their potential to negatively affect the environment and human health. There is a substantial need to develop new methods and techniques for management and disposal that are economically feasible and environmentally suitable. Such methods require better characterization and chemical understanding of these wastes, including advancements pertaining to the interaction between radioactive elements and non-radioactive constituents within the complex waste matrix. This thesis focuses on the fundamental chemistry of three types of wa

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5

Liberati, Blake P. "Removal of Naturally Occurring Radioactive Material From Flowback/Produced Water From the Hydraulic Fracturing Process." Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1438968751.

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6

Frignani, Ilaria. "Tecniche di riduzione della quantità di rifiuti prodotti dall’attività di estrazione petrolifera e contenenti NORM (Naturally Occurring Radioactive Materials)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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I rifiuti prodotti dall'estrazione petrolifera si presentano come incrostazioni o fanghi oleosi e viscosi, che si formano all'interno delle tubazioni e dei condotti nelle riserve petrolifere, soprattutto in prossimità di angoli e gomiti. Il loro contenuto radioattivo è di origine naturale ed è composto principalmente da Ra-226. A causa dell'elevata quantità di materiale che supera i valori limite di 10 Bq/g, i NORM (Naturally Occurring Radioactive Materials) rappresentano un notevole problema di rifiuto per l'industria petrolifera. In questo elaborato si descrivono le proprietà dei materiali

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7

Shams, Hasan M. "Determination of levels of naturally occurring radioactive materials in lagoon samples containing water from oil fields in the State of Kuwait." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/848601/.

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An evaluation of the specific activity concentrations associated with technologically enhanced naturally occurring radioactive materials (TENORM) and anthropogenic radionuclides has been undertaken, with particular focus on produced water from the Kuwait oil industry. This work is part of a systematic study to provide a radiological map of the outer boundary of the produced water lagoon located in the Minagish oil field in the south west region of the State of Kuwait. This particular lagoon contains material from the discharge of produced water which is a by-product of oil production in the re

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8

Alazemi, Naser. "Determination of levels of naturally occurring radioactive materials in environmental samples in the State of Kuwait by high-resolution γ-ray spectrometry". Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/807973/.

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A passively shielded, low-background hyper-pure germanium detector system was used to analyze and determine the radioactivity levels and content of soil samples taken from across the State of Kuwait. Samples were collected from 180 separate locations using a grid pattern with a 10km grid spacing with the result of creating a surface radiological map of the State of Kuwait. It was found that naturally occurring radioactive materials, 238U, 232Th and 40K, had average concentrations of 18.5±4.3, 17.1±4.1 and 410 ±110 Bq/kg respectively. Artificially created radionuclides were not found or were be

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9

Torres, Luisa Fernanda. "Holistic Risk Assessment of Surface Water Contamination by Naturally Occurring Radioactive Material in Oil Produced Water from the Bakken Shale." Thesis, North Dakota State University, 2016. https://hdl.handle.net/10365/28216.

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The risks to the environment and human health due to hydraulic fracturing (HF) in onshore unconventional oil and gas (O&G) development have been studied in the past but results are inconclusive. A common shortcoming in previous studies is the absence of social risk perception and awareness analysis. This thesis research proposes the combination of statistical methods to analyze risks to human health due to improper management of produced water, the major by-product of HF. This study focuses on the Bakken Shale located in North Dakota. A risk assessment of radium-226 was performed from a techni

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10

Ralph, Martin I. "Towards establishing a fit-for-purpose regulatory framework for radiation protection in Western Australia's mining industry: Evaluating mine worker exposures to naturally occurring radionuclides." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2023. https://ro.ecu.edu.au/theses/2642.

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Mining in the state of Western Australia (WA) formally commenced in the 1840s, and over the ensuing 180 years has evolved to be the epicentre of the Australian mining industry and a significant contributor to the national economy. The lithology of WA is replete with mineralisation that hosts uranium and “critical minerals” required for the global renewable energy sector. The state’s first uranium mine is under development, and high levels of activity are occurring in the state’s nascent critical minerals sector, with 168 WA-based companies pursuing rare earths-bearing minerals, 51 of which are

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11

Ramchandran, S. R. "Azo and azoic dyes based on naturally occurring raw materials." Thesis(Ph.D.), University of Bombay, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3676.

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12

Daggag, Dalia. "Computational Study on Binding of Naturally Occurring Aromatic and Cyclic Amino Acids with Graphene." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2019. http://digitalcommons.auctr.edu/cauetds/203.

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The knowledge on the conformations of amino acids is essential to understand the biochemical behaviors and physical properties of proteins. Comprehensive computational study is focused to understand the conformational landscape of three aromatic amino acids (AAAs): tryptophan, tyrosine, and phenylalanine. Three different density functionals (B3LYP, M06-2X and wB97X-D) were used with two basis sets of 6-31G(d) and 6-31+G(d,p) for geometry optimizations of the conformers of AAAs followed by the vibrational frequencies. The goal was to identify the right choice of density functional theory (DFT)

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13

Santawamaitre, Todsadol. "An evaluation of the level of naturally occuring radioactive materials in soil samples along the Chao Phraya river basin." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555934.

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The aim of this study was to evaluate the level of natural radioactivity in river sediments and riverbank surface soils collected along the Chao Phraya River and its tributaries in Thailand. The activity concentrations of naturally occurring radioactive materials in the 238U and 232Th decay chains and from 40K were determined by means of a gamma-ray spectrometry system using a hyper-pure germanium (HPGe) detector in a low background configuration. The ranges of activity concentrations of 238U, 232Th and 40K were found to be 13.9 ± 0.4 ~ 76.8 ± 1.7, 12.9 ± 0.3 ~ 142.9 ± 2.8 and 178.4 ± 6.1 ~ 81

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14

Peña, Gomez Natalie. "Development of polymeric and silica filtering materials functionalized with antimicrobial compounds for the elimination of microorganisms in liquid food." Doctoral thesis, Universitat Politècnica de València, 2020. http://hdl.handle.net/10251/137041.

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[ES] En la presente tesis doctoral se ha evaluado el uso de nuevos soportes celulósicos y silíceos como sistemas de filtración para la estabilización y conservación de alimentos líquidos con el fin de afrontar dos grandes retos de la industria de bebidas. Por un lado, evitar o minimizar los cambios en las propiedades nutricionales, estructurales y organolépticas de los alimentos, ocasionados por la pasteurización térmica tradicional, y ofrecer una alternativa al problema de la baja viabilidad debida a los altos costos de inversión/producción al aplicar nuevas tecnologías no térmicas. Por ello,

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15

Motimedi, T. C. "Evaluation of soil to plant transfer factors of naturally occurring radioactive materials (norms) in some vegetables / T.C Motimedi." Thesis, 2012. http://hdl.handle.net/10394/15769.

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16

Bahmaid, Mohammad A. "Application of the gamma pathway exemption rule for naturally occurring radioactive materials in industrial waste using ISOSHLD-II." Thesis, 1995. http://hdl.handle.net/1957/34658.

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17

Shiau, Tz-Jau, and 蕭子昭. "Feasibility Study Of Polyhydroxyalkanoates Production For Materials Recycling Using Naturally-occurring Pollutant Degraders." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/63362230681898030492.

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碩士<br>國立宜蘭大學<br>化學工程與材料工程學系碩士班<br>100<br>Considering eco-friendliness of recycling and reuses of biomaterials for sustainable development, this first-attempt study used indigenous pollutant degrading bacteria for the production of biodegradable polymers polyhydroxyalkanoates (PHAs) during wastewater treatment. First, the candidate strains of poly-3-hydroxybutyrate (PHB) production were inspected among isolated pollutant-degrading microbes via Sudan black B staining (SB staining). Next, according to batch cultures using lauric acid (C12) as the sole carbon source for PHB production, the promisi

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18

Leopold, Karsten [Verfasser]. "Chemical types of bounding of natural radionuclides in TENORM : (technologically enhanced naturally occuring radioactive materials) / presented by Karsten Leopold." 2007. http://d-nb.info/988995603/34.

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