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Dissertations / Theses on the topic 'Methyl bromide'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Horst, Axel. "Stable bromine isotopic composition of methyl bromide : Method development and applications." Doctoral thesis, Stockholms universitet, Institutionen för tillämpad miljövetenskap (ITM), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-89454.

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The isotopic composition of ozone depleting methyl halides may provide valuable information on the sources and sinks of these compounds. However, so far mostly stable carbon isotope analysis of methyl chloride and methyl bromide (CH3Br) has been attempted. Especially halogen isotope analysis has been hindered by the challenge to obtain sufficiently large amounts of methyl halides to meet the detection limits of existing isotope analytical methods. The purpose of this doctoral thesis was to develop both a high-volume cryogenic collection system for methyl bromide (Article II) and an analytical

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2

Baker, Jonathan M. "Natural and anthropogenic sources of methyl bromide." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266714.

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3

Knight, Gary Peter. "Kinetic, spectroscopic and theoretical studies involving methyl bromide." Thesis, University of York, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296292.

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4

Warwick, Nicola Julie. "Global modelling of atmospheric methane and methyl bromide." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619980.

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5

Rhew, Robert C. "Production and consumption of methyl bromide and methyl chloride by the terrestrial biosphere /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035891.

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6

Groszko, Wayne. "An estimate of the global air-sea flux of methyl chloride, methyl bromide, and methyl iodide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/NQ49265.pdf.

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7

Belcher, Jason Lamar Walker Robert Harold. "Acrolein (2-propenal) a potential alternative to methyl bromide /." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Agronomy_and_Soils/Dissertation/Belcher_Jason_27.pdf.

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8

Hardacre, Catherine. "Characterisation of CH3X fluxes from Scottish and high latitude wetlands." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4605.

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Methyl bromide (CH3Br) and methyl chloride (CH3Cl) are two halocarbons that are unique in that they play a significant role in stratospheric ozone destruction, and are mainly produced by natural systems. The current average tropospheric mixing ratios are 7.9 pptv CH3Br and 550 pptv CH3Cl (WMO, 2007). Although CH3Br and CH3Cl are present in such low concentrations, their atmospheric life times are sufficiently long that they can be transported to the stratosphere via the tropical tropopause at the equator. This process takes approximately six months.

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9

Pepper, Jordan D. "An examination of the environmental Kuznets curve for methyl bromide /." View online, 2010. http://repository.eiu.edu/theses/docs/32211131576463.pdf.

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10

Preisser, Richard Herman III. "Food Safe Alternatives to Methyl Bromide in Country Ham Production." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/73654.

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Dry cured meat production is a costly and long term investment for producers. Ham mites (Tyrophagus putrescentiae) are a common pest of dry cured products and cause devastating effects, potentially nullifying producers' investments due to loss of salable product, as well as regulatory concerns. Methyl bromide, a chemical fumigant used to control mite populations, is damaging to stratospheric ozone and will no longer be available. Presently, no alternative control measure has been approved to combat the ham mite; therefore, it is essential to identify potential alternatives. Interest in safe al

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11

Simmons, Lee Julian Rodríguez-Kábana R. "Developing alternatives to methyl bromide a focus on acrolein (2-propenal) /." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Entomology_and_Plant_Pathology/Dissertation/Simmons_Lee_19.pdf.

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12

Blei, Emanuel. "Study of methyl halide fluxes in temperate and tropical ecosystems." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4717.

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CH3Br and CH3Cl (methyl halides) are the most abundant natural vectors of bromine and chlorine into the stratosphere and play an important role in stratospheric ozone destruction. The current knowledge of their respective natural sources is incomplete leading to large uncertainties in their global budgets. Beside the issue of quantification, characterisation of possible sources is needed to assist modelling of future environmental change impacts on these sources and hence the stratosphere. This study describes measurements conducted at two temperate salt marsh and three temperate forest sites

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13

Heyd, Darrick Vaughn. "Photodissociation of methyl bromide adsorbed on LiF(001), NaCl(001), and MgO(001)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0001/NQ27950.pdf.

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14

Drewer, Julia. "Investigation of natural methyl bromide (CH3Br) fluxes from temperate salt marsh and woodland ecosystems." Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/13722.

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In this project, field measurements and controlled experiments were used to investigate the magnitude of, and controls on, some terrestrial sources of CH<sub>3</sub>Br to help in assessing global fluxes. The influence of factors such as temperature, soil properties, sunshine level, plant species and water table, and correlation to methane (CH<sub>4</sub>) fluxes, were investigated. Field measurements were carried out using eight static flux chapters installed in pairs in the lower and upper areas of a salt marsh in East Lothian (Scotland) and four at a woodland site in Edinburgh. Mean annual

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15

McAvoy, Theodore Porter. "Managing Weeds and Soilborne Pests with Fumigant and Non-Fumigant Alternatives to Methyl Bromide." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/37813.

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Methyl bromide (MBr) was widely used as a soil fumigant to manage soilborne pests in plasticulture vegetable production; however, it has been banned by the United Nations Environment Programme. Alternatives to MBr must be implemented to sustain fresh market tomato productivity. Possible MBr alternatives include new fumigant compounds, improved plastic mulch, and grafting. Methyl iodide (MeI) and dimethyl disulfide (DMDS) were tested as fumigant alternatives to MBr for the control of yellow nutsedge and soilborne pathogens of tomato. Virtually impermeable film (VIF) and totally impermeable f

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16

Underwood, Jonathan. "Vector properties in molecular photodissociation." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311835.

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17

Seccombe, Dominic Paul. "The nature of the excited states of some non metal halides and their cations." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368455.

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18

Zulhendri, Felix. "Investigation of metabolic-stress disinfection and disinfestation (MSDD) as an alternative to methyl bromide for disinfestation." Thesis, University of Auckland, 2012. http://hdl.handle.net/2292/19410.

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Metabolic-stress disinfection and disinfestation (MSDD) is a Methyl Bromide (MeBr) alternative disinfestation technology that utilises the combination of pressure change, hypercarbia, hypoxia and ethanol treatments. The thesis describes the investigation of the insecticidal efficacy of MSDD against various insect pests; longtailed mealybug (Pseudococcus longispinus), 5th instar light brown apple moth (LBAM, Epiphyas postvittana) larvae and 5th instar codling moth larvae (Cydia pomonella). MSDD consists of 2 phases, namely a physical phase and followed by a chemical phase. The physical phase is

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19

Jensen, Christopher D. (Christopher David) 1974. "Terrestrial sources and sinks of atmospheric methyl bromide : three-dimensional modeling of tropospheric abundance and sensitivities." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/54436.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1999.<br>Includes bibliographical references (p. 87-92).<br>Current estimates of methyl bromide surface fluxes are inconsistent with the observed tropospheric mole fractions (9 to 10 ppt, globally averaged) and the calculated atmospheric lifetime (1.7 ± 0.2 years), with mid-range estimates of sinks exceeding sources by at least 50 Gg y-I. Given the uncertainties in process-specific surface flux estimates, we consider several distributions of terrestrial sources and sinks that satisfy the

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20

Ren, YongLin, and n/a. "Carbonyl sulphide as a fumigant for grain and timber : efficacy towards organisms and formation of residues." University of Canberra. Human & Biomedical Sciences, 1997. http://erl.canberra.edu.au./public/adt-AUC20061107.120137.

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This thesis presents an investigation of carbonyl sulphide as a new fumigant and related methodology studies. The first part involved the investigation of a new fumigant - carbonyl sulphide, which has the potential to replace methyl bromide. Its biological response or activity was investigated, e.g. toxicity to target organisms and phytotoxicity, environmental and worker safety considerations. In the second investigation, analytical methods were developed for the determination of fumigant movement through timber and fumigant residues in grains as well as a method of chemical fractionation to d

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21

Kharel, Kabita. "Evaluation of pyrethrin aerosol insecticide as an alternative to methyl bromide for pest control in flour mills." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16006.

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Master of Science<br>Department of Entomology<br>Frank H. Arthur<br>Kun Yan Zhu<br>Experiments were conducted to assess the effects of direct and indirect exposure scenarios, different degrees of residual flour, open and obstructed positions, and seasonal temperature variations on the efficacy of synergized pyrethrin against the red flour beetle, Tribolium castaneum (Herbst) and the confused flour beetle, Tribolium confusum Jacquelin du Val. To evaluate effects of direct and indirect exposures of T. castaneum and T. confusum eggs, larvae, pupae, or eggs to the insecticide aerosol within a flou

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22

Steel, Colin James. "Automated radiosynthesis of 2-['1'1C]thymidine and ['1'1C]methyl halides for use in Positron Emission Tomography." Thesis, University of Hertfordshire, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323444.

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23

Muhareb, Jeannette S. "A comparsion to methyl bromide with two alternatives treatments; sulfuryl fluoride and heat to control stored products insects." Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4201.

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Muhareb, Jeannette S. "A comparison to methyl bromide with two alternatives treatments; sulfuryl fluoride and heat to control stored products insects." Thesis, Kansas State University, 2010. http://hdl.handle.net/2097/4201.

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Master of Agribusiness<br>Department of Agricultural Economics<br>Subramanyam Bhadriraju<br>Environmental concerns are growing as new information is being discovered as to what is harmful to the environment. The desire to help the environment along with improving fumigations is a big concern and effects many people. Ongoing research to improve fumigations without harming the environment has shown great promise in advancing technology and lowering the cost in protecting commodities consumed by the consumer. Methyl Bromide (MB) has been the major fumigant used to control stored-product inse

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25

Struss, John Anthony. "New Methods for the Formation of Methyl Bearing Stereogenic Centers via Methylketene Dimerization and Free Radical Additions to Allyl Bromides." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28734.

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Two organic synthetic methods for the generation of methyl bearing chiral centers have been developed using: 1) dimerization of methylketene and 2) a free radical-based addition/elimination reaction involving allyl bromides. The first method, the asymmetric dimerization of methyl ketene, followed by an asymmetric aldol reaction and the appropriate functional group manipulations enabled us to construct the (2S, 4S, 6S) trimethylnonyl subunit found in the siphonariene class of natural products. The latter method explored the stereoselective potential of a free radical-based condensation react

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26

Clark, L. J., and E. W. Carpenter. "The Effects of Methyl Bromide Fumigants on Verticillium Wilt on Two Varieties of Short Staple Cotton, Safford Agricultural Center, 1988." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/204842.

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Methyl bromid/chloropicrin formulations were applied to strips in the verticillium nursery at the Safford Agricultural Center where two varieties of short staple cotton were subsequently planted. More robust plant growth and reduced incidence of disease were noted with some of the treatments. Yield increases over the check plots were also seen. A study of the residual effects of the treatments will be performed in 1989.

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27

Abbar, Salehe. "Methods for management of Tyrophagus putrescentiae (Schrank) (Sarcoptiformes: Acaridae) in dry-cured ham facilities." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/34466.

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Doctor of Philosophy<br>Department of Entomology<br>Thomas W. Phillips<br>Robert "Jeff" J. Whitworth<br>Dry-cured ham is protected from infestations of Tyrophagus putrescentiae (Schrank) (Sarcoptiformes: Acaridae) with the fumigant methyl bromide. Developing feasible alternatives to methyl bromide is necessary due to the phase out of methyl bromide. The effectiveness of food-safe compounds for preventing infestations of T. putrescentiae on dry-cured hams was evaluated by dipping ham pieces in solutions of various food additives. Propylene glycol (1, 2-propanediol), lard, ethoxyquin and butylat

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28

Brijwani, Monika. "Effect of sanitation on responses of Tribolium castaneum (herbst) (Coleoptera: tenebrionidae) life stages to structural heat treatments." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/8439.

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Master of Science<br>Department of Grain Science and Industry<br>Subramanyam Bhadriraju<br>Heat treatment involves raising the ambient temperature of food-processing facilities such as flour mills to 50-60oC for killing stored-product insects. However, very little is known about the influence of sanitation on responses of stored-product insects to structural heat treatments. The impact of sanitation on responses of life stages of the red flour beetle, Tribolium castaneum, an economically important pest in flour mills, were investigated during three 24 h structural heat treatments of the Kansas

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29

van, Haandel Andre. "Irradiation as an alternative phytosanitary treatment for Arhopalus ferus and Hylurgus ligniperda." Thesis, University of Canterbury. School of Forestry, 2014. http://hdl.handle.net/10092/10506.

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Wood products all require treatment to mitigate phytosanitary risk prior to exportation. The most common phytosanitary treatment applied to Pinus radiata logs is Methyl Bromide (MeBr). The Environmental Protection Agency (EPA) in 2010 stated that MeBr must not be release into the atmosphere past 2020. This poses a problem for New Zealand log exports. Radiation has been identified as a possible alternative phytosanitary treatment for export wood products. This study aimed to quantify the effective dose of radiation necessary to sterilise two forest pest species; Arhopalus ferus and Hylurgus lig

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30

Carter, Mel. "Investigating novel approaches for the integrated control of the soilborne strawberry pathogens Macrophomina phaseolina and Fusarium oxysporum f. sp. fragariae." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1628.

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Macrophomina phaseolina (Mp) and Fusarium oxysporum f. sp. fragariae (Fof) are emerging soilborne pathogens causing crown rot and Fusarium wilt, respectively, in commercial strawberry production in California. Fungicides representing eight active ingredients from four different mode of action groups (FRAC groups 1, 3, 7 and 12) were evaluated for their efficacy against each pathogen in vitro and each disease in planta. Fungicide active ingredients were evaluated for their ability to inhibit mycelial growth of both pathogens in vitro. Half-strength potato dextrose agar was amended with six diff

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31

Adamovic, Ivana. "Solvation!" Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2004. http://www.osti.gov/servlets/purl/835373-NLtQXD/webviewable/.

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19 Dec 2004.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "IS-T 2009" Ivana Adamovic. 12/19/2004. Report is also available in paper and microfiche from NTIS.

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32

Ridley, Paul. "Underpotential deposition of lead on gold and platinum (111) electrode surfaces investigated by scanning tunnelling microscopy." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343615.

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33

Lagrange, Thierry. "Intoxication accidentelle collective familiale au bromure de méthyle : à propos de 4 cas." Montpellier 1, 1990. http://www.theses.fr/1990MON11266.

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34

Chang, Xue Feng. "Development and application of a rapid micro-scale method of lignin content determination in Arabidopsis thaliana accessions." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2448.

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Lignin is a major chemical component of plants and the second most abundant natural polymer after cellulose. The concerns and interests of agriculture and industry have stimulated the study of genes governing lignin content in plants in an effort to adapt plants to human purposes. Arabidopsis thaliana provides a convenient model for the study of the genes governing lignin content because of its short growth cycle, small plant size, and small completely sequenced genome. In order to identify the genes controlling lignin content in Arabidopsis accessions using Quantitative Trait Locus (QTL) anal

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35

Haroutunian, Garabed. "La fumigation biologique comme alternative au bromure de méthyle pour le contrôle du nématode Méloïdogyne incognita dans la production de concombre dans les serres." Thesis, Paris, AgroParisTech, 2013. http://www.theses.fr/2013AGPT0025/document.

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Les nématodes à galles demeurent l'un des problèmes les plus graves des ‎agriculteurs de serres du Liban et du Moyen-Orient. Dans le passé, la fumigation du sol au ‎bromure de méthyle a été considérée comme la meilleure mesure de contrôle contre ces ‎nématodes. Toutefois, à la lumière de l'élimination globale du bromure de méthyle, l'accès ‎aux alternatives efficaces et durables est devenu une nécessité essentielle.‎L'objectif de cette étude est d'évaluer l'efficacité des deux engrais verts, le radis ‎huileux (Raphanus sativus oleifera) et à la roquette (Eruca vesicaria sativa) appliquées ‎ave

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36

SANTOS, ROBINSON A. dos. "Otimização da metodologia de preparação do cristal de brometo de tálio para sua aplicação como detector de radiação." reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10085.

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Made available in DSpace on 2014-10-09T12:34:35Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:00:07Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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37

Lacerda, Roseli Sengling. "Teores de lignina determinados através do método espectrofotométrico lignina solúvel em brometo de acetila de alguns cultivares de aveia." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-04072002-153418/.

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Para quantificar o teor de lignina em alguns cultivares de aveia, foi utilizado o método espectrofotométrico "lignina solúvel em brometo de acetila LSBA", onde a lignina é solubilizada em uma solução a 25% de brometo de acetila em ácido acético glacial e em seguida sua absorbância lida a 280 nm; como padrão de referência foi utilizada a lignina extraída da aveia através de uma solução ácida de dioxana. A quantificação da lignina foi realizada em oito cultivares de aveia, nas frações planta inteira, caule e folha, em três estádios de maturidade (45, 55 e 65 dias de idade). Os resultados obt

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38

Kruger, John Scott. "Synthesis and characterization of several novel aluminum and gallium phosphates templated by cobalt complexes." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/30553.

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Kadry, Ahmed Y. "Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3285/.

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A study was conducted to evaluate the sorption characteristics of six disinfection byproducts (DBPs) on four sorbents. To investigate sorption of volatile organic compounds (VOCs), specially designed experimental batch and continuous flow modules were developed. The investigated compounds included: chloroform, 1,2-dichloroethane (DCE), trichloroethylene (TCE), bromodichloromethane (BDCM), methyl tertiary butyl ether (MTBE), bromate and bromide ions. Sorbents used included light weight aggregate (LWA), an inorganic porous material with unique surface characteristics, Amberlite® XAD-16, a weakly

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40

Zheldakov, Igor. "Ultrafast Photophysics and Photochemistry Of Hexacoordinated Bromides of Pt(IV), Os(IV), and, Ir(IV) in the Condensed Phase Studied by Femtosecond Pump-Probe Spectroscopy." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1279998360.

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Santamaria, Marcos Felipe Zuñiga. "Otimização do método lignina brometo de acetila na determinação do teor de lignina em plantas forrageiras e comparação com os métodos lignina detergente ácido e lignina Klason." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-09052016-112358/.

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Técnicas analíticas empregadas para a quantificação do teor de lignina em plantas forrageiras, atualmente em uso, são questionáveis quanto às suas acurácias. O método lignina detergente ácido (LDA), que é um dos métodos mais utilizado em Ciência Animal e Agronomia, apresenta algumas falhas, particularmente devido à parcial solubilização da lignina durante a preparação da fibra em detergente ácido (FDA). A lignina Klason (LK), outro método muito usado, apresenta o inconveniente de mensurar a proteína da parede celular como sendo lignina. Em ambos os procedimentos recomenda-se também mensurar ci

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42

GALEA, HELENE. "Synthese de radioligands marques au brome-76 et au carbone-11 pour l'etude des recepteurs n-methyl-d-aspartate par tomographie d'emission de positons." Caen, 1998. http://www.theses.fr/1998CAEN2015.

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Les recepteurs n-methyl-d-aspartate (nmda) sont impliques dans diverses pathologies du systeme nerveux central telles que les accidents vasculaires cerebraux, les traumatismes, l'epilepsie et les maladies de parkinson et d'huntington. Malgre l'interet que represente la possibilite de visualiser in vivo les recepteurs nmda par tomographie d'emission de positons (tep), aucun radioligand exploitable n'existe a ce jour. Nous avons prepare et teste les analogues radiomarques de deux antagonistes des recepteurs nmda : le #7#6brrpr104632 (acide 6,8-dichloro-3,4-dihydro-2-(3-#7#6brbromobenzyl)-2h-1,2,

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BERTOLINI, THARCILA C. R. "Estudo comparativo sobre a adsorção de diferentes classes de corantes em zeólitas de cinzas de carvão: modelagem cinética e de equilíbrio." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10557.

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Made available in DSpace on 2014-10-09T12:41:55Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:16Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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Tausch, Jeremy Verfasser], Friedemann [Akademischer Betreuer] Schrenk, and Timothy [Akademischer Betreuer] [Bromage. "A new method for examining hominin dietary strategy: occlusal microwear vector analysis of the Sangiran 7 Homo erectus molars / Jeremy Tausch. Gutachter: Friedemann Schrenk ; Timothy Bromage." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2012. http://d-nb.info/1044275332/34.

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Tausch, Jeremy [Verfasser], Friedemann Akademischer Betreuer] Schrenk, and Timothy [Akademischer Betreuer] [Bromage. "A new method for examining hominin dietary strategy: occlusal microwear vector analysis of the Sangiran 7 Homo erectus molars / Jeremy Tausch. Gutachter: Friedemann Schrenk ; Timothy Bromage." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2012. http://nbn-resolving.de/urn:nbn:de:hebis:30:3-248492.

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Andraud, Chantal. "Defauts d'empilement dans le materiau unidimensionnel cscdbr::(3) : etude spectroscopique." Paris 6, 1987. http://www.theses.fr/1987PA066140.

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L'etude des proprietes optiques de cscdbr::(3) a montre l'existence de centres br::(2)**(2-). L'excitation des echantillons par des rayonnements ionisants (rx, faisceau d'electrons) et des experiences d'absorption a deux photons ont permis d'associer les differentes bandes d'emission et d'absorption observees a des transitions appartenant a ces centres. L'existence de ces centres br::(2)**(2-) est attribuee a la presence de defauts d'empilement. L'effet d'une pression hydrostatique, le dopage par des ions pb**(2x) et le recuit des cristaux confirment l'hypothese

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47

OLIVEIRA, ICIMONE B. de. "Desenvolvimento do cristal semicondutor de brometo de tálio para aplicações como detector de radiação e fotodetector." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11385.

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Made available in DSpace on 2014-10-09T12:51:21Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:59:28Z (GMT). No. of bitstreams: 1 11295.pdf: 3731608 bytes, checksum: 642672d3ddbbe81953275dd174a58822 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:01/09049-5

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PEREIRA, MARIA da C. C. "Desenvolvimento de cristais baseados em iodeto de césio para aplicação como detectores de radiação." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11434.

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Made available in DSpace on 2014-10-09T12:51:53Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:37Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Yahiaoui, Mohamed. "ETUDE DU DIAGRAMME DE PHASE ET DU COMPORTEMENT VERRE DE SPIN DU SYSTEME ISOLANT DILUE FexMg1-xBr2." Toulouse, INSA, 1988. http://www.theses.fr/1988ISAT0014.

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Etude par mesures de susceptibilite magnetique et d'aimantation du systeme du titre. Ce compose stratifie est un systeme d'ising 3d. On etudie le diagramme de phase et on met un comportement de verre de spin. Pour x=0,72, les mesures montrent l'importance du comportement reentrant. L'analyse du comportement critique pour x=0,35 est analyse par l'etude de l'aimantation non lineaire. Mise en evidence d'une transition de phase. Valeur des exposants critiques. On compare ensuite le comportement avec celui des systemes bidimensionnels d'ising

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SANTOS, ROBINSON A. dos. "Estudo da influência de impurezas e da qualidade das superfícies em cristais de brometo de tálio para aplicação como um detector de radiação." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26818.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-11-11T13:09:25Z No. of bitstreams: 0<br>Made available in DSpace on 2016-11-11T13:09:25Z (GMT). No. of bitstreams: 0<br>Neste trabalho, cristais de TlBr foram crescidos e purificados pelo método de Bridgman Repetido, a partir de sais comerciais de TlBr, e caracterizados para serem usados como detectores de radiação à temperatura ambiente. Para avaliar a eficiência de purificação, estudos da diminuição da concentração de impurezas foram feitos após cada crescimento, analisando as impurezas traço por Espectrometria de Massas com Plasm

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