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Rozprawy doktorskie na temat „Trace elements”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Bárány, Ebba. "Trace elements in adolescents /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2002. http://epsilon.slu.se/v117.pdf.

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2

Corrigan, F. M. "Trace elements and psychiatric illness." Thesis, University of Aberdeen, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.592272.

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Developments in analytical techniques have allowed study of the concentrations of more than thirty elements in biological tissues. These methods have been applied to blood and brain tissues from patients with a wide range of psychiatric illness. Increases in blood vanadium concentrations in affective illness are discussed in relation to possible disturbance of noradrenaline metabolism. It is suggested that high vanadium levels may reflect high circulatory levels of noradrenaline but direct evidence of such a link has not yet been obtained. Discussions of elements in dementia centres mainly on

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3

Stovell, Alex Gordon. "Trace elements and human fertility." Thesis, University of Surrey, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301350.

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Погорєлов, Максим Володимирович, Максим Владимирович Погорелов, Maksym Volodymyrovych Pohorielov, E. V. Gusak, V. N. Deyneka, and E. N. Gordienko. "Trace elements in healthy bones." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27504.

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Osteogenesis stimulation is one of the underinvestigated issues nowadays, as well as the topical problem of traumatology. One of the most important functions of the osseous tissue is depositing of macro- and microelements, due to this research on the skeleton ion profile is highly important to explain the osteogenesis physiological and reparative processes. As some microelements are involved into enzyme catalysis reactions, which are held in the osteogenic cells, so in case of their deficit or imbalance some processes are interrupted such as osteoblastic and osteoclastic differentiation, apati

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5

Okada, Naoki. "TRACE ELEMENTS IN TREE STEMS." Kyoto University, 1990. http://hdl.handle.net/2433/78225.

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6

Voigt, Astrid. "Bioavailability of trace metals to plants." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19561.

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Soil quality guidelines are currently based on total trace metal loads. There is a need to define indices of bioavailability to allow reasonable predictions for plant metal uptake and toxicity in soils. Trace metal toxicities to plants often correlate best with free metal ion activities. The first objective was to develop a plant bioassay that is sensitive to trace metals at concentrations realistic for soils. The root elongation of lettuce Lactuca sativa 'Buttercrunch' was used as toxicological endpoint. This endpoint was sensitive and reproducible to environmentally relevant concentrations o

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7

Reed, Graham Philip. "Control of trace elements and gasification." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313361.

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8

Dundar, Mustafa Sahin. "Speciation studies on dietary trace elements." Thesis, University of Hull, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337335.

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9

Reyes, Delgadillo Dulce B. "Modeling natural attenuation of trace elements in soils." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101169.

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Trace elements added to the soil by human activities could contaminate it and occasionally cause a threat to environmental and human health. The toxicity and mobility of a trace element are affected by the element's solubility, which in turn is influenced by the soil properties. When mobile, trace elements can be leached out of the soil. If leaching occurs at a faster rate than atmospheric deposition, element concentrations in the soil will decrease by natural attenuation.<br>We analyzed soil properties in 40 soils and their soil solutions to obtain a set of equations with the most significant

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10

Dick, A. L. "Trace elements in Antarctic snow and air." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376538.

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11

Al-Merey, Rafaat. "Trace elements determination in Syrian phosphate rocks." Thesis, University of Reading, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329358.

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12

Santos, Susana Isabel Barros dos. "Trace elements quantification in Portuguese red wines." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6276.

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Dissertation for the Degree of Master in Technology and Food Safety – Food Quality<br>The aim of this thesis is to characterize Portuguese red wines in terms of trace elements composition. The wines were chosen so that all the country was represented and studied. For trace elements quantification (As, Hg, Cd, Ni and Pb) were tested various sample treatments including for all trace elements: acid digestion or presence and absence of spike. The need for H2O2 addition in order to oxidize organic compounds was analyzed for Hg, Cd, Ni and Pb. Quantification of all trace elements was performed w

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13

Norris, C. Ashley. "Volatilities of trace elements in silicate melts." Thesis, University of Oxford, 2016. http://ora.ox.ac.uk/objects/uuid:2ae4f65b-951b-42d3-9b71-6d91c7b6d207.

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The loss rates of volatile elements from silicate melts are of considerable interest to a number of branches of volcanology, petrology, and geochemistry. In the volcanic context emanation coefficients are used as empirical measures of the extent of loss of individual elements in the gas phase. In geochemistry and cosmochemistry relative loss rates control the pattern of element depletions during melting and core segregation on asteroids and proto planets. Incorporation of such differentiated, pre-melted bodies probably influenced the well-known pattern of volatile element depletion in the Sili

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14

Fontanili, L. "SYSTEMIC ALLOCATION OF TRACE ELEMENTS IN RICE." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/253624.

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Several studies have shown that Cd, a non-essential and toxic metal, is taken up from soil and translocated in a root-to-shoot direction through transporters of essential elements such as Zn, suggesting that the two metal ions may compete for the same transporter protein on a membrane. However, the movement of Zn and Cd ions across several biological membranes involves a wide range of transport systems, each characterized by a specific selectivity. Although divergent results have been obtained, they suggest that Zn-independent pathways for Cd translocation in plants could be possible. The pr

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15

Trapp, John Michael. "Chemistry of Iron and Other Trace Elements in Trade Wind Aerosols and Precipitation." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/323.

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The atmospheric transport of various substances from the continents to the oceans plays an important role in biogeochemical processes. Trace metals, iron in particular is of great interest as its availability regulates the growth of phytoplankton over large areas of the ocean. This dissertation focuses on examining and characterizing the factors that affect the solubility of trace metals in Miami and Barbados aerosols and precipitation, in particular species that could play a role in surface seawater biogeochemistry (Fe and trace metals such as Al, V, Cr, Mn, Cu, Co, Ni, Zn, As, Tl, Ba, Cd, P

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16

Gurusamy, K. S. "Role of trace elements in colorectal liver metastases." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1302062/.

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Trace elements are involved in many key metabolic pathways. Literature review demonstrated that the trace element content in liver metastases is lower than that in surrounding livers and that in livers of normal individuals. The significance of trace elements in the diagnosis, prognosis, and treatment of patients undergoing surgical resection for colorectal liver metastases (CLM) is not known. Samples obtained from patients who underwent liver resection for colorectal liver metastases were used for this research. Iron, copper and zinc content were measured by X-ray fluorescence (XRF) and were

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17

Sham, R. P. "The role of selected trace elements in atherosclerosis." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47251.

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18

Pallavicini, Nicola. "Method development for isotope analysis of trace and ultra-trace elements in environmental matrices." Doctoral thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59705.

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The increasing load of toxic elements entering the ecosystems, as a consequence of anthropogenic processes, has grown public awareness in the last decades, resulting in a great number of studies focusing on pollution sources, transport, distribution, interactions with living organisms and remediation. Physical/chemical processes that drive the uptake, assimilation, compartmentation and translocation of heavy metals in biota has received a great deal of attention recently, since elemental concentrations and isotopic composition in biological matrices can be used as probes of both natural and a

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19

Poon, Tim-leung. "Trace organic pollution in the indoor environment /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13498605.

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20

Ambrose, Andrea Jane. "A preconcentration technique for the determination of trace elements." Thesis, University of Plymouth, 1989. http://hdl.handle.net/10026.1/1662.

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21

Corgne, Alexandre. "Deep earth structure and the distribution of trace elements." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399373.

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22

Zeng, Taofang 1963. "Transformation of iron and trace elements during coal combustion." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9971.

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23

Hassani, Bibizahra 1959. "Binding of trace elements with various dietary fiber sources." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277058.

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Mineral binding capacity of rice bran, oat hull, soy bran, wheat bran, peanut, apple, tomato, and barley fiber were investigated. Defatted fibers were analyzed for ash, protein, acid detergent fiber, and lignin. The fibers were washed with 1% HCl and Acid washed samples were studied for their mineral binding ability. The minerals tested were zinc, copper, and magnesium. Analysis of acid washed samples showed that most of the original minerals had been stripped from the fiber. In most of the fibers studied, the order of binding was copper > zinc > magnesium. Among the eight fibers studied, oat

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24

Elliott, Tracey Anne. "Bone diagenesis : an experimental study of selected trace elements." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/1556/.

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25

Sabino, Magali. "Bioaccumulation of trace elements in Seychelles marine food webs." Thesis, La Rochelle, 2021. http://www.theses.fr/2021LAROS026.

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La sécurité alimentaire, qui est la garantie de l’approvisionnement et de la qualité des aliments tout en gérant les ressources de manière durable, est intrinsèquement liée à la connaissance de la biologie et l’écologie des espèces consommées. Dans un contexte de dérèglement climatique menaçant la salubrité des produits de la mer, il est donc nécessaire d’établir un référentiel sur le fonctionnement des systèmes marins, ainsi que sur l’occurrence des nutriments et des contaminants dans les produits de la mer. C’est d’autant plus important pour les Petits Etats Insulaires en Développement (PEID

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26

Seames, Wayne Stewart. "The partitioning of trace elements during pulverized coal combustion." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284196.

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The environmental impact resulting from the release of trace elements during coal combustion is an important issue for the coal-fired electric utility industry. Trace elements exit the combustor by partitioning between the flue gas and the fly ash particles. A comprehensive study has been conducted to investigate the mechanisms governing the partitioning of trace elements during pulverized coal combustion. The behavior of seven trace elements (arsenic, selenium, antimony, cobalt, cesium, thorium, and cerium) in six pulverized coals were studied under commercially relevant conditions in a well-

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27

Hultén, Amanda. "Determination of trace elements in thrombocytes by ICP-MS." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397392.

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28

Eriksson, Emma. "Determination of trace elements in thrombocytes by ICP-AES." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-398044.

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29

BARRESI, ANDREA. "Development of innovative techniques for ultra-trace elements analysis." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/403458.

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L'esperimento JUNO è stato proposto con l'obiettivo principale di risolvere il problema relativo all'ordinamento di massa dei neutrini attraverso misure accurate del flusso di antineutrini prodotto da reattori nucleari. A causa della sezione estremamente ridotta dei neutrini, il numero di eventi segnale previsti è molto piccolo, circa 60 eventi IBD al giorno, ed è quindi essenziale tenere sotto controllo il tasso di eventi di fondo. Ciò può essere ottenuto minimizzando tutte le sorgenti che contribuiscono alla produzione di eventi spuri e in primo luogo quelle generate dal fondo radioattivo. P

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30

Van, Westrenen Willem. "Thermodynamics of garnet - melt trace element partitioning." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310693.

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31

Choi, In Sup. "Trace elements determination in cancerous and noncancerous human tissues using instrumental neutron activation analysis." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/13385.

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32

Pan, Jinfen. "Bioavailability of trace metals to marine bivalves mediated by dissolved and colloidal organic carbon /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202004%20PAN.

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33

Lawgali, Youssef F. "Trace element levels in Mediterranean grains." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=136842.

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This is the first study to compare total arsenic (As) and other trace elements in the agricultural soils and grain of Eastern, Western and Southern Libya, North Africa and the Middle East (NA & MIDEA). Soil pot experiments and field experiments were conducted to determine the levels of As within wheat grains in Libya. In the soil pot experiments, wheat genotypes were planted in similar soils and yet differences in grain As concentration were found among the cultivars. The highest As accumulation was found in <i>T. durum; </i>however, in the field data the highest levels were found in <i>T.

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34

Wong, Wang-wah. "Trace organics pollution in the aquatic environment /." [Hong Kong] : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13498356.

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35

Laera, Andreina. "Fate of trace elements during and after anaerobic digestion : a sequential extraction method and DGT technique to assess bio-accessible trace elements in digestate." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2011.

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Différentes interactions chimiques entre les éléments traces métalliques (ETM) et les composés organiques/inorganiques provenant du substrat et générées au cours du processus de digestion anaérobie détermineront la spéciation des ETM dans les digesteurs anaérobies. Après digestion anaérobie, les digestats sont exposés à des conditions d’oxydation qui peuvent favoriser un changement de la spéciation des ETM et par conséquent de leur bioaccessibilité pour les microorganismes du sol et les plantes lors de l’épandage des digestats sur des terres agricoles en tant qu’amendement organique. Plusieurs

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36

Hindersmann, Iris [Verfasser], and Tim [Akademischer Betreuer] Mansfeldt. "Trace elements in floodplain soils - effects of redox conditions on the mobility of trace elements and volatilization of mercury / Iris Hindersmann. Gutachter: Tim Mansfeldt." Köln : Universitäts- und Stadtbibliothek Köln, 2014. http://d-nb.info/1060190427/34.

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37

Denney, Susan, and susan denney@deakin edu au. "Trace metal speciation in the Pieman River catchment, Western Tasmania." Deakin University. School of Ecology and Environment, 2000. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20071107.111755.

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The Pieman River catchment has seen continuous mining of economic deposits of gold, silver, lead, copper, zinc and tin since the 1870s. Tributaries of this river which receive mining effluent, either directly or from acid mine drainage (AMID), have total metal concentrations considerably above background levels and are of regulatory concern. The lower Pieman River is however classified as a State Reserve in which recreational fishing and tourism are the major activities. It is therefore important that water entering the lower Pieman River from upstream hydroelectric impoundments is o

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38

Tinggi, Ujang. "Trace element analysis and nutritional studies in children with phenylketonuria." Thesis, Queensland University of Technology, 1989. https://eprints.qut.edu.au/36913/1/36913_Tinggi_1989.pdf.

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Techniques suitable for sample preparation and analysis of copper, iron, zinc, chromium, manganese and selenium in plasma, urine and food samples were further developed to achieve the maximum accuracy and reproducibility. The problems and limitations associated with the analytical techniques were discussed. Special emphasis was given to selenium because of prevalent matrix interferences and losses associated with its analysis especially at the low levels present in some of the samples. Precedence was also given to the analysis of selenium, manganese and chromium in selected foods as such data

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39

Benneyworth, Laura Mahoney. "Distribution of Trace Elements in Cumberland River Basin Reservoir Sediments." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1113.

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The U.S. Army Corps of Engineers, Nashville District, maintains ten reservoirs in the Cumberland River Basin in Kentucky and Tennessee, and has been monitoring sediment chemistry in the reservoirs since 1994. The purpose of this study is to evaluate the sediment data collected from the reservoirs from 1994 to 2010 to determine if there are any spatial patterns of the trace elements: arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, and zinc. The results indicated that trace element levels were consistent with national baseline concentrations measured by the U.S. Geological

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40

Havercroft, Janet M. "Boron and other trace elements in human tissues and fluids." Thesis, University of Surrey, 1989. http://epubs.surrey.ac.uk/842751/.

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The multielemental technique of inductively coupled plasma source mass spectrometry (ICP-MS) was used to measure the elemental concentration of boron and 28 other elements within blood and its fractions, saliva, urine, hair, nails, synovial fluid, brain and bone samples. A number of biological standard reference materials were also analysed: IAEA A13 animal blood and H4 animal muscle, NIST 1577A bovine liver and SRM909 human serum, and SINR 0920 Chinese hair. Boron levels were found to be in the order of 30-40ng/mL in saliva and synovial fluid, 150ng/mL in blood, 1mug/mL in urine, 2-4mug/g in

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41

Petronda, Andrea. "Trace elements in the Cyprus environment associated with urban development." Thesis, University of Surrey, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606802.

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Since Cyprus entered the European Union (EU) in 2004, there has been a rapid expansion associated with the development of major motorway networks, tourist centres, commercial and industrial activity within major cities. To date, very little research has been undertaken in Cyprus, to assess the impact of such urban development on chemical levels in the environment. This research aimed to assess the possible levels of chemicals• in the southern part of Cyprus using the olive tree as a potential biomonitor for evaluating the degree of Mn, Cu, Zn, Pb, Cr, Co, Ni, V, Mo, Cd and As contamination in

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42

Earle, Kay Elizabeth. "Determination of trace elements in relation to diabetes in man." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37679.

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Pimenta, Joana Raimundo. "Accumulation, responses and genotoxicity of trace elements in octopus vulgaris." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/4895.

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Dissertação apresentada para obtenção do Grau de Doutor em Bioquímica pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia<br>Common octopus, Octopus vulgaris, is a sedentary cephalopod inhabiting coastal waters and thus susceptible to be exposed to local contamination. Octopuses were captured in three coastal areas with contrasting environmental contamination: Matosinhos, Cascais and Olhão. Levels of V, Cr, Fe, Co, Ni, Zn, Cu, As, Se, Cd, Hg and Pb were analysed in various tissues of octopus: digestive gland, gills, kidney, gonads, posterior salivary glands, branchial hear

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44

Marchand, Charlotte. "Phytoremediation of soil contaminated with petroleum hydrocarbons and trace elements." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-60839.

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The rapid urbanization and industrialization has led to an increase of disposal petroleum hydrocarbons (PHC) and trace elements (TE) into the environment. These pollutants are considered as the most toxic contaminants in the world due to their persistence in the environment, and the long range of toxicological effects for living beings. Recent concerns regarding the environmental contamination have initiated the development of several remediation technologies, including physical, chemical, and biological approaches. In this thesis, gentle soil remediation options (GRO) were investigated at dif

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45

Tsoi, Yeuk Ki. "Prevalent instrumentation and material in trace elements analysis and speciations." HKBU Institutional Repository, 2011. http://repository.hkbu.edu.hk/etd_ra/1250.

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Üzelyalçın, Berna Harsa Şebnem. "Effects Of Trace Elements On The Production Of Baker's Yeast/." [s.l.]: [s.n.], 2002. http://library.iyte.edu.tr/tezler/master/biyoteknoloji/T000146.rar.

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47

Ferraro, Stefano. "Influence of trace elements on secondary die-cast aluminium alloys." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423822.

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Recycling play a key role on saving of natural resources and on reducing pollution. The recycling of aluminium alloys is also cost-effective, since it reduce the material cost and creates a considerable energy-saving. The use of recycled Al alloys (usually called secondary) has improved in recent years also because of their comparable mechanical properties with primary aluminium alloys. During the production of secondary aluminium alloys, the scrap are mixed regardless of their specific chemical composition, and then master alloys or pure elements are added to the molten metal. Furthermore,

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48

Miao, Aijun. "Trace metal accumulation and toxicity in marine phytoplankton /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202006%20MIAO.

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Jin, Li. "Determination of trace metals and copper complexation in freshwater systems of the Bonavista Peninsula, Newfoundland by stripping voltammetry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq25853.pdf.

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50

Ataro, A., Robert Ian McCrindle, B. M. Botha, Cheryl Myra Ethelwyn McCrindle, and P. P. Ndibewu. "Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)." Elsevier, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000153.

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The levels of trace elements are an important component of safety and quality of milk. While certain elements such as chromium are essential at low levels, an excess can result in deleterious effects on human health. International quality control standards for milk are published by the Codex Alimentarious Commission and levels of heavy metals in milk intended for human consumption are routinely monitored. This paper describes a new method for demonstrating the levels of V, Cr, Mn, Sr, Cd and Pb in raw cow’s milk, using an ICP-MS. Samples (n = 24) of raw cow’s milk were collected from dairy far

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