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Dissertations / Theses on the topic 'Environmental SR'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Sottile, Mauro Giuliano. "Implementation and evaluation of a recently developed rate-dependent effective stress soil model 'MIT-SR'." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107071.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 131-136).<br>Reliable modeling of rate-dependency in soil properties remains a major challenge for accurate solutions of many geotechnical problems. Although there are many sources of experimental data concerning rate dependent properties of clays, most pre-existing soil models have been found to have severe predictive limitations. Yuan (2016) developed a new elasto-viscoplastic model, MIT-SR, for ra

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2

Rellán, Gonzalo. "Application of rate dependent soil model, MIT-SR, for evaluation of long-term ground movements due to consolidation and creep." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120649.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 188-190).<br>Saturated clays exhibit rate-dependent behavior (i.e. their stress-strain-strength properties are significantly affected by the applied loading rate). This is of great significance for geotechnical projects, particularly when long-term predictions of settlements of compressible soil strata are based on results of laboratory element tests on small test specimens. Ladd et al. (1977) show t

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3

Visser, Gledus. "The application of Sr-spec resin in the analysis of 90Sr in effluent and environmental samples at KNPS." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2327.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2016.<br>Radiostrontium (90Sr and 89Sr) has been released to the environment by global fall-out following atmospheric nuclear explosions, by waste discharges and fall-out from the Chernobyl. 89Sr, with a half-life of 50.5 days, quickly decays to undetectable levels, while 90Sr is radiobiologically more important because of its longer half-life of 28.78 years, and because it behaves chemically similar to Ca, and accumulates in bones and teeth. Cost effective and relatively simple procedures for determination of radiostront

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4

Freitas, Pedro Seabra. "Environmental and biological controls of Mg/Ca, Sr/Ca and Mn/Ca ratios in the shells of the bivalves Pinna nobilis, Mytilus edulis and Pecten maximus : implications for palaeo-environmental reconstructions." Thesis, Bangor University, 2007. https://research.bangor.ac.uk/portal/en/theses/environmental-and-biological-controls-of-mgca-srca-and-mnca-ratios-in-the-shells-of-the-bivalves-pinna-nobilis-mytilus-edulis-and-pecten-maximus--implications-for-palaeoenvironmental-reconstructions(7ee552e9-da04-48b3-9cda-8df55183e068).html.

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Calcium carbonate skeletons produced by organisms such as foraminifera, ostracodes, corals and molluscs have the potential to contain within their isotope and elemental composition signatures (i. e. proxies) that reflect the environment in which the organisms calcified. Bivalves offer the potential for high resolution reconstructions over a wide geographical range and in the fossil record since the Early Ordovician. However, when compared to other biogenic carbonate archives there have been relatively fewer studies that have investigated bivalve mollusc shell geochemistry, especially robust va

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5

Callegaro, Sara. "Origin and environmental impact of the Central Atlantic Magmatic Province." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422938.

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The Central Atlantic Magmatic Province (CAMP), associated with the breakup of Pangea and straddling the Triassic-Jurassic boundary, has been recognized as one of the largest Phaneorozoic igneous provinces. Its volcanogenic gas outpurs possibly led to global climatic perturbations that in turn have been suggested to have had a trigger role on the end-Triassic biotic crisis. To further test this causal link, several aspects need to be investigated, through a multidisciplinary approach. In particular, eruptive style and rate as well as chemistry of the outpurred volcanics may influence the quant

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6

Clement, Corinne. "Etude de coulis hydrauliques pour la retention des cations polluants pb, cd, hg, sr, cs." Paris, ENMP, 1988. http://www.theses.fr/1988ENMP0091.

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7

Konovalenko, Lena. "Element transport in aquatic ecosystems – Modelling general and element-specific mechanisms." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-110064.

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Radionuclides are widely used in energy production and medical, military and industrial applications. Thus, understanding the behaviour of radionuclides which have been or may be released into ecosystems is important for human and environmental risk assessment. Modelling of radionuclides or their stable element analogues is the only tool that can predict the consequences of accidental release. In this thesis, two dynamic stochastic compartment models for radionuclide/element transfer in a marine coastal ecosystem and a freshwater lake were developed and implemented (Paper I and III), in order

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8

Tourpin, Sylvie. "Perte des mémoires isotopiques (Nd, Sr, 0) et géochimiques (REE) primaires des komatiites au cours du métamorphisme : Exemple de la Finlande Orientale." Phd thesis, Université Rennes 1, 1991. http://tel.archives-ouvertes.fr/tel-00675899.

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Les komatiites ont souvent été considérées comme reflétant directement les compositions chimiques et isotopiques de leurs sources mantelliques. Cependant, l'utilisation de ces roches pour reconstituer la composition du manteau archéen apparaît abusive du fait que les komatiites montrent toutes des recristallisations métamorphiques, ce qui laisse subsister un doute profond quant à la préservation de leurs caractéristiques primaires. La possibilité d'une modification profonde des signatures isotopiques ainsi que des autres caractéristiques chimiques (incluant des éléments réputés immobiles, tels

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9

Guerrot, Catherine. "Archéen et ProtérozoÏque dans la chaîne hercynienne ouest-européenne : géochimie isotopique (Sr-Nd-Pb) et géochronologie U-Pb sur zircons." Phd thesis, Université Rennes 1, 1989. http://tel.archives-ouvertes.fr/tel-00653455.

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La reconnaissance et l'étude géochronologique et isotopique des terrains anté-paléozoiques inclus dans la chaîne hercynienne d'Europe de l'Ouest s'avèrent indispensables si l'on veut connaître leur influence dans la genèse des magmas en zones orogéniques et donc sur la croissance crus tale. Pour ce faire, deux objets géologiques ont été étudiés : les granulites immergées du Golfe de Gascogne, et les roches cadomiennes du nord du massif armoricain. La séquence géochronologique obtenue (2,7 - 2,0 - 0,6 Ga) correspond à celle observée dans le craton Ouest-Africain. Un rapprochement entre cette pa

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10

Souza, Luciana Carla Ferreira de. "Avaliação de metais em esgoto e lodo gerado em estações de tratamento, nos municípios de Jaguariúna e Campinas, empregando a fluorescência de raios x por reflexão total com radiação síncrotron (SR-TXRF)." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258555.

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Orientador: Silvana Moreira<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-22T06:30:46Z (GMT). No. of bitstreams: 1 Souza_LucianaCarlaFerreirade_D.pdf: 23739098 bytes, checksum: 19ea527d066d2fff5ef81495ee85ff0f (MD5) Previous issue date: 2013<br>Resumo: O rápido crescimento urbano e industrial nas ultimas décadas provocou alterações no meio ambiente, dentre eles a poluição dos corpos d'água, principalmente por metais que podem causar danos a saúde humana. Os municípios de Campinas e Jaguar

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11

Lahaye, Yann. "L'altération des komatiites." Phd thesis, Université Rennes 1, 1995. http://tel.archives-ouvertes.fr/tel-00655890.

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Dans le but de tester la capacité des komatiites à préserver leur composition géochimique et isotopique (Sr,Nd, 0) primaire, caractéristique du manteau archéen, les coulées basaltiques et komatiitiques des ceintures de roches vertes de l'Abitibi et de Barberton ont été étudiées. . Les komatiites peu altérées ont des compositions géochimiques compatibles avec le fractionnement de l'olivine; seuls les éléments alcalins sont mobilisés. Dans les komatiites plus altérées, les concentrations en High Field Strength Element (HFSE) par rapport aux Terres Rares (REE) produisent des anomalies variables à

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12

Kouamelan, Alain-Nicaise. "Géochronologie et Géochimie des Formations Archéennes et Protérozoïques de la Dorsale de Man en Côte d'Ivoire. Implications pour la Transition Archéen-Protéozoïque." Phd thesis, Université Rennes 1, 1996. http://tel.archives-ouvertes.fr/tel-00653760.

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L'Ouest de la Côte d'Ivoire se caractérise par la juxtaposition d'un domaine Archéen (Kenema-Man) et d'un domaine Protérozoique (Baoulé-Mossi), respectivement situés à l'Ouest et à l'Est de la faille du Sassandra. Elle offre donc l'opportunité d'une étude de la transition entre l'Archéen et le Paléoprotérozoique. Dans le domaine Archéen, les roches se différencient du manteau entre 3,3 et 3,5 Ga (âge modèle Nd). Les formations granulitiques les plus anciennes sont datées à 3050 ± 10 Ma (âge monozircon). Des zircons hérités dans des paragneiss indiquent un héritage continental, au minimum à 3,2

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13

Martin, Hervé. "Nature, origine et évolution d'un segment de croûte continentale archéenne : contraintes chimiques et isotopiques. Exemple de la Finlande orientale." Phd thesis, Université Rennes 1, 1985. http://tel.archives-ouvertes.fr/tel-00655973.

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Le but de ce mémoire est d'aborder le problème de la genèse et de l'évolution de la croate continentale. Le support de terrain ayant servi de base à cette étude est le socle de Finlande orientale dont l'histoire archéenne se déroule sur plus de 500 m.a. L'analyse a été menée en 4 étapes successives : a) une étude de terrain permet de caractériser les matériaux et d'établir leur chronologie relative. b) la radiochronologie (Rb-Sr) précise l'enchainement et la durée des événements géologiques. c) les différents aspects de la genèse de chaque unité lithologique sont envisagés à l'aide de la géoch

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14

Gasquet, Dominique. "Genèse d'un pluton composite tardi-hercynien : le massif du Tichka, haut atlas occidental (Maroc)." Phd thesis, Nancy 1, 1991. http://tel.archives-ouvertes.fr/tel-00690900.

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Le Massif composite du Tichka a été étudié dans le but de préciser les mécanismes de sa formation, pour les raisons suivantes : il offre une coupe verticale de 2500m avec une qualité exceptionnelle d'affleurements qui permet de faire des observations et des échantillonnages en continu ; il montre une gamme de composition allant des gabbros aux leucogranites avec des relations spectaculaires entre les diorites et les granitoïdes contemporains. Les études de terrain, pétrographiques, minéralogiques, géochimiques, isotopiques (Sr et Nd) ont été utilisées pour mieux cerner sa genèse. De plus, l'ét

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15

Cross, Matthew Alan. "Mathematical modelling of â¹â°Sr and Â¹Â³â·Cs in terrestrial and freshwater environments." Thesis, University of Portsmouth, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247068.

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16

Lopes, Brandao Areosa Rodrigues Luis Paulo. "Development and validation of the AHEMD-SR (Affordances in the Home Environment for Motor Development-Self Report)." Texas A&M University, 2003. http://hdl.handle.net/1969.1/2471.

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A contemporary view of early childhood motor development considers environmental influences as critical factors in optimal growth and behavior, with the home being the primary agent. However, minimal research exists examining the relationship between motor development and the home. The present dissertation addresses this gap with the goal of creating an innovative parental self-report instrument for assessing the quality and quantity of factors (affordances and events) in the home that are conducive to enhancing motor development in children ages 18-to-42 months. In Study 1, following initial

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17

Emelogu, Emmanuel Steven. "Combined effects of bioavailable organic contaminants in the aquatic environment." Thesis, Robert Gordon University, 2013. http://hdl.handle.net/10059/840.

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Passive sampling, as opposed to the conventional spot or bottle water sampling technique, has shown to be reliable and efficient in monitoring the toxicologically relevant, freely dissolved (e.g. bioavaialable) concentrations of a wide range of organic contaminants in water. At the same time, partitioning controlled delivery (passive dosing; PD) techniques promise to overcome many of the challenges associated with toxicity testing of hydrophobic substances that may bias the interpretation of toxicity data. The present study investigated the feasibility of coupling silicone rubber passive sampl

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18

Lei, Jieyi, and Hui Ou. "A Critical View on CSR in Different Business Environments : a comparison of CSR between Sandvik Sweden, and State Grid Corporation, China." Thesis, University of Gävle, University of Gävle, University of Gävle, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-5778.

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<p>Corporate social responsibility (CSR) has emerged as a global trend in different countries with diverse policy, culture, and CSR perspective and development level. Thus, we want to analysis CSR in different business environments and find out the gap they have. That is the original idea of our research.</p><p>This research mainly locates in Sweden and China, by comparing the temporal CSR development in a Swedish and a Chinese company—Sandvik and State Grid Corporation of China, the former as the advanced pioneer, and the latter as the dynamic learner, to gain an insight of the adaptability a

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19

Pin, Christian. "Essai sur la chronologie et l'évolution géodynamique de la chaîne hercynienne d'Europe." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 1989. http://tel.archives-ouvertes.fr/tel-01001861.

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Ce travail utilise les propriétés des géochronomètres et de traceur pétrogénétique des systèmes isotopiques Sm-Nd, Rb-Sr et U-Pb, pour apporter une contribution à l'interprétation géodynamique de la Chaîne Hercynienne d'Europe. Dans ce but, on a étudié des formations d'origine magmatique diverses, choisies pour leur signification vis-à-vis des reconstitutions paléo-tectoniques. Les résultats obtenus sur certaines suites bimodales (par ex. groupes leptyno-amphiboliques), et des associations basiques-ultrabasiques de nature ophiolitique (Chamrousse, Sudètes) suggèrent l'existence d'au-moins deux

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20

Fazza, Elizete Vieira. "Avaliação da agua e do sedimento das microbacias dos Ribeirões Graminha e Aguas da Serra na cidade de Limeira, SP." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258642.

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Orientador: Silvana Moreira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-11T03:52:29Z (GMT). No. of bitstreams: 1 Fazza_ElizeteVieira_M.pdf: 2172063 bytes, checksum: 9efe3c01da1dbb554288a537bfa44ea7 (MD5) Previous issue date: 2007<br>Resumo: A cidade de Limeira está localizada no Estado de São Paulo e possui economia expressiva, com indústrias em vários setores produtivos, entre elas, galvanoplastias voltadas para a produção de jóias, semijóias e bijuterias. Visando elucidar se há

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21

Shen, Chuan Chou, and 沈川洲. "High Precision Analysis of Sr/Ca Ratio and its Environmental Application." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/08831845899275240187.

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22

"Environmental Justice and the Siting of SR-85 and North Gateway Transfer Station." Master's thesis, 2015. http://hdl.handle.net/2286/R.I.34778.

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abstract: It is widely recognized that, compared to others, minority and low-income populations are more exposed to environmental burdens and unwanted land uses like waste facilities. To prevent these injustices, cities and industry need to recognize these potential problems in the siting process and work to address them. I studied Phoenix, AZ, which has historically suffered from environmental justice issues. I examined whether Phoenix considered environmental justice concerns when siting their newest landfill (SR-85) and transfer station (North Gateway Transfer Station). Additionally, I asse

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23

Fallon, Stewart John. "Environmental Records from Corals and Coralline Sponges." Phd thesis, 2000. http://hdl.handle.net/1885/107199.

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This research centers on the extraction of environmental information stored in the calcium carbonate skeletons of corals (Porites) and coralline sponges (Astrosclera willeyana). Elemental variations are measured in these samples using laser ablation inductively coupled plasma mass spectrometry. During this project, techniques were refined and developed to quantitatively measure major (B, Mg, Sr, Ba, U) and minor (Mn, Zn, Pb, REE’s) elemental abundances in corals and coralline sponges. This method was used to extract seasonal records from a hig

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24

Montgomery, Janet, J. A. Evans, and G. Wildman. "87Sr/86Sr Isotope Composition of Bottled British Mineral Waters for Environmental and Forensic Purposes." 2006. http://hdl.handle.net/10454/3130.

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No<br>Mineral waters in Britain show a wide range of 87Sr/86Sr isotope compositions ranging between 87Sr/86Sr = 0.7059 from Carboniferous volcanic rock sources in Dunbartonshire, Scotland to 87Sr/86Sr = 0.7207 in the Dalradian aquifer of Aberdeenshire, Scotland. The 87Sr/86Sr composition of the waters shows a general correlation with the aquifer rocks, resulting in the waters from older rocks having a more radiogenic signature than those from younger rocks. This wide range of values means that the Sr isotope composition of mineral water has applications in a number of types of studies. In the

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25

Dos, Santos Rosa. "Datation K/Ar et Rb/Sr d'argiles de minéralisations et de diagenèse le long de la cote Est de l'Amérique du Sud : implications géodynamiques." Phd thesis, 1994. http://tel.archives-ouvertes.fr/tel-00708614.

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L'objectif de la thèse est de vérifier le long de la côte Est de l'Amérique du Sud le modèle qui lie la tectonique en extension accompagnant la formation d'une marge passive, avec la mise en place de certaines minéralisations filoniennes et l'occurrence de mécanismes diagénétiques dans les grands bassins sédimentaires limitrophes. Dans ce but, deux cent échantillons d'argiles ont été récoltés, préparés, et analysés par diffraction de rayons X pour les sélectionner en vue de leur datation, depuis la Patagonie jusqu'au Nord du Brésil, et dans le Bassin du Parana. Les âges K/Ar et Rb/Sr mesurés m

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26

Hsieh, Tung-Chin, and 謝東錦. "SLAM in Indoor Environment Using SR-3000 Range Imager." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/83300719254697458823.

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碩士<br>國立清華大學<br>電機工程學系<br>99<br>Simultaneous localization and mapping (SLAM) becomes an ever important topic for robotic research. The ability that an autonomous mobile robot can simultaneously locate itself and navigate in an unknown indoor environment is prerequisite. The simplest localization method only uses the odometer to estimate the robot position and pose, but the accumulated error is growing with the execution time of the system. The Extended Kalman Filter (EKF) is often applied to revise the system error of SLAM problem. In this thesis, we propose a system which extracts features fo

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27

Rolland, Yan. "De la convergence intra-océanique à l'évolution post-collisionnelle : exemple de la convergence indo-asiatique en Himalaya du NW du Crétacé à nos jours." Phd thesis, 2000. http://tel.archives-ouvertes.fr/tel-00701083.

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Le segment Nord-Ouest himalayen (Kohistan-Ladakh et Karakorum, NE Pakistan et NO Inde) est une zone appropriée pour étudier les étapes de la convergence de deux continents (Inde et Asie), en contexte océanique puis continental sur 110 Ma. Une approche pluridisciplinaire (géologie structurale, pétro-géochimie, thermo-barométrie, géochronologie Ar-Ar) a été utilisée. Les étapes intra-océaniques de la convergence sont étudiées via les séries d'arc du Nord-Ladakh. Cette étude permet de raccorder l'arc océanique du Kohistan à l'W, à la marge active tibétaine à l'Est. L'étude des isotopes du Sr, Nd

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Yi-HsuanChiang and 江易璇. "The Sr isotopic fractionation caused by poplar trees and the implications to the environments." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46884464138440067506.

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碩士<br>國立成功大學<br>地球科學系<br>103<br>Triple Strontium (Sr) isotopes have been extensively applied as tracers for weathering processes in the terrestrial environments. Plants located on the of rock-water-soil interface, and have been known to accelerate the weathering rate when they mobilizes metals from soils. Recent studies showed plants may play a non-negligible role in the biogeochemical cycle of strontium using the δ88/86Sr, but the relationship between plants and the environments were still unclear. Here we aim to use δ88/86Sr to demonstrate how plants affect the δ88/86Sr in soil, even evaluat

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Urlwin, B. "Carbon isotope stratigraphy of the Late Proterozoic Wonoka Formation of the Adelaide Fold Belt: diagenetic assessment and interpretation of isotopic signature and correlations with previously measured isotopic curves." Thesis, 1992. http://hdl.handle.net/2440/105305.

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This item is only available electronically.<br>The Wonoka Formation of the Adelaide Fold Belt represents the only well described example of a late Proterozoic storm dominated carbonate shelf sequence with the considerable thickness and lateral extent of the formation making it an excellent opportunity for applying the principles of isotope stratigraphy. Sequences exposed at Warraweena, which lies on the boundary between the Central and Northern Flinders Zones, were analysed for stable isotope ratios of carbon and oxygen. Geochemical, petrographic and cathodoluminescent analysis of individu

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