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Tesis sobre el tema "Metals analysis"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de agosto de 2024

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1

Naidoo, Dhesigen P. "Metals and the conformation of fibrin." Master's thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/26555.

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The carboxy terminal of the γ-chain of human fibrinogen contains at least three biologically. important functional domains: (i) the fibrinogen γ-chain polymerisation centre, (ii) the platelet receptor domain and (iii) the site for staphyloccocal clumping. The nature of the site specificity of these interactions necessitates the existence of a preferred conformation for this region, the nature of which has yet to be clearly established. A novel zinc metalloproteinase isolated from puff adder venom (PAV protease) capable of specifically cleaving the di-γ-chain of transglutaminase (Factor XIIIa)

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2

Kocak, Ozgur. "Analysis Of The Formability Of Metals." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1178714/index.pdf.

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Workpieces during cold forging fail basically due to ductile fracture. Ductile fracture can be predicted by damage models. In this study, various damage models such as Cockcroft &amp<br>Latham, McClintock, Freudenthal, Rice &amp<br>Tracy, Oyane, Ayada, Brozzo are investigated for their applicability to three workpiece materials: bearing steel (100Cr6), stainless steel (X5CrNiMo1810) and brass (CuZn39). The damage material parameters have been obtained by various tests such as tensile, standard compression, ring compression, compression with flanges and conical compression tests. The characteri

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3

Thuramalla, Naveen. "Multiscale modeling and analysis of failure and stability during super plastic deformation -- under different loading conditions." Lexington, Ky. : [University of Kentucky Libraries], 2004. http://lib.uky.edu/ETD/ukymeen2004t00171/NAVEEN.pdf.

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Thesis (m.s.)--University of Kentucky, 2004.<br>Title from document title page (viewed Jan. 5, 2005). Document formatted into pages; contains x, 112p. : ill. Includes abstract and vita. Includes bibliographical references.

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4

Dangolle, Champa D. P. "Some aspects of trace analysis of metals." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318885.

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5

Mirmasoudi, Sara. "High Temperature Transient Creep Analysis of Metals." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1452693927.

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6

Lambidis, Elisavet. "Synthesis and photophysical studies of metal complexes for biological applications /Lambidis Elisavet." HKBU Institutional Repository, 2017. http://repository.hkbu.edu.hk/etd_oa/346.

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Nowadays the necessity for designing and synthesizing novel imaging agents increases rapidly. The long wavelength, and thus, low energy, of excitation and emission, and the good specificity and stability are examples of essential characteristics of ideal diagnostic and therapeutic agents. In this work, the synthesis and photophysical studies of metal complexes for biological applications were performed and evaluated, and it contained the development of (a) a porphyrin probe for imaging and treatment and (b) a tripodal thermal sensor for imaging. The research and study of the two cases of compl

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7

Al-Attar, A. F. "Selenium and trace metals as pollutants." Thesis, University of Bristol, 1987. http://hdl.handle.net/1983/1858b91b-362e-422f-b91c-84aa44e23e90.

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8

Sadjadi, Seyedabdolreza. "Ab initio relativistic-consistent calculations and charge density and experimental mass-spectroscopic analysis of mono and poly-nuclearclusters of group 11 and 12 transition metals and metal chlorides: ySeyedabdolreza Sadjadi." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B5060577X.

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The electron density function of molecular systems supplies a package of information. Quantum mechanical methods of producing and analyzing this function have been significantly improved during the past few years. The advent of accurate pseudopotentials and corresponding basis sets for Kohn-Sham density functional and for post-Hartree-Fock electron-correlated approaches have enabled the inclusion of scalar relativistic and spin-orbit coupling effects as well as electron correlation effects into the electron density function. The unpacking of the information embedded in such a function via the

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9

Jones, Matthew Kenneth. "Multiscale Analysis of Void Coalescence in Ductile Metals." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112004-165827/.

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A mulitscale approach is used to model the coalescence of voids. At the microscale, cylindrical and spherical voids in nickel and the magnesium alloy AM60 are simulated through finite element analyses. The nickel cylindrical void simulations are compared to a set of experiments to validate this micromechanical finite element approach used to study void coalescence. At the macroscale, the coalescence portion of a microstructure-property material model is modified to reflect the behavior of three-dimensional spherical voids using results from the micromechanical simulations. An analysis of an au

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10

Bond, Philip Harvey. "Analysis of flexible interlayers between metals and ceramics." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282713.

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11

Auer, Derek. "Flow-injection analysis of the platinum-group metals." Doctoral thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/17511.

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Includes bibliographical references.<br>To date the principle methods for the determination of the platinum-group metals (PGMs) use an "off-line" assay with flame-atomic absorption spectrometry and visible spectrometry. Both suffer numerous interferences and involve time-consuming and arduous laboratory separation methods prior to analysis. An "on-line" method for the rapid assay of the PGMs is indeed a lacking component in the analysts' repertoire of methods. This study describes the development of spectrophotometric methods for the determination of the PGMs using flow-injection analysis (FIA

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12

Bian, Lichun, and 卞立春. "Fatigue crack growth analysis of metallic plates with an inclinedsemi-elliptical crack." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31242844.

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13

Meuli, Reto Meuli Reto Giulio Meuli Reto Giulio Meuli Reto Giulio. "Geostatistical analysis of regional soil contamination by heavy metals /." [S.l.] : [s.n.], 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12121.

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14

Colombo, Carlo Maurizio. "Flow analysis of trace metals in seawater by voltammetry." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338581.

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15

Kucz, Daniel Allen. "Analysis of distortion-induced fatigue cracking in a steel trapezoidal box girder bridge." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 177 p, 2009. http://proquest.umi.com/pqdweb?did=1885755701&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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16

Limson, Janice Leigh. "Electrochemical studies of metal-ligand interactions and of metal binding proteins." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1018239.

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Electrochemical methods were researched for the analysis of metals, proteins and the identification of metal binding proteins. Adsorptive cathodic stripping voltamrnetry for metal analysis combines the inherent sensitivity of electrochemical techniques with the specificity of ligands for the nonfaradaic preconcentration of analytes at the electrode. The utility of catechol, resorcinol, 4-methylcatechol and 4-t-butylcatechol as ligands was explored for the sensitive analysis of copper, bismuth, cadmium and lead on a mercury film glassy carbon electrode. Metal complexes of lead, copper and bismu

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17

Wang, Jin 1954. "Extraction of heavy metals with supercritical carbon dioxide : a novel approach to heavy metal analysis and decontamination." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39890.

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The technique of extraction with supercritical carbon dioxide (SC-CO$ sb2$), which is now used routinely for the recovery of non-polar analytes from a variety of liquid and semipermeable solid media, was extended to the efficient extraction of metal ions. Measurements of the solubilities in SC-CO$ sb2$ corroborated the hypothesis that the non-polar character of a series of tetraalkylammoniun dialkyldithiocarbamates ion pairs was influenced (i) primarily by the chain length of the alkyl substituent(s) on the carbamate nitrogen and (ii) to a lesser extent, by the chain length of the alkyl substi

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18

Heydenrych, Greta. "New amino- and titanoxycarbene complexes of group 6 metals." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52355.

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19

Soffiati, João Emanuel. "Analise numerica e experimental do cravamento de componentes mecanicos tubulares em haste com ponta esferica." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264408.

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Orientador: Sergio Tonini Button<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-09T22:04:57Z (GMT). No. of bitstreams: 1 Soffiati_JoaoEmanuel_M.pdf: 11880628 bytes, checksum: 29a510c6bed00d4a1a53fe4897d4cc0f (MD5) Previous issue date: 2007<br>Resumo: Cravamento é um processo de conformação de metais a frio que apresenta baixo custo na utilização de fixação de componentes tubulares. O tipo de cravamento estudado é aplicado em projetos de componentes que necessitem transmitir movimento de rotação, similar à

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20

Kiani, Ahmed. "Analysis of metal oxide thin film transistors with high-k dielectrics and source/drain contact metals." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648586.

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21

Williams, Timothy Paul. "Determination of trace metals by ion-chromatography with chemiluminescence detection." Thesis, University of Plymouth, 1990. http://hdl.handle.net/10026.1/2182.

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22

Ahuja, Vishal. "Analysis of novel transition metals as catalysts for oxygen delignification." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62909.pdf.

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23

Wang, Z. P. "Analysis and palliation of contact stresses between ceramics and metals." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352926.

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24

Dallmeier, Johannes. "Experimental analysis and numerical fatigue modeling for magnesium sheet metals." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-209124.

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The desire for energy and resource savings brings magnesium alloys as lightweight materials with high specific strength more and more into the focus. Most structural components are subjected to cyclic loading. In the course of computer aided product development, a numerical prediction of the fatigue life under these conditions must be provided. For this reason, the mechanical properties of the considered material must be examined in detail. Wrought magnesium semifinished products, e.g. magnesium sheet metals, typically reveal strong basal textures and thus, the mechanical behavior considerably

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25

Parker, Gavin James. "Analysis of metals in airborne particulate matter in eastern Iowa." Thesis, University of Iowa, 2019. https://ir.uiowa.edu/etd/7010.

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Airborne particulate matter (PM) consists of solid and liquid particles suspended in air. PM causes many negative health effects when inhaled like exacerbations of asthma, chronic obstructive pulmonary disease (COPD), and premature death. The health impacts of PM depend on the physical size and chemical composition of the inhaled particles. Particles less than 2.5 micrometers can penetrate the deep lung and enter the bloodstream. Understanding the composition of PM helps study human exposures and evaluate PM sources to support control and mitigation strategies. This thesis examines PM in power

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26

Merriman, Colin Clarke. "Orientation dependence of dislocation structure evolution of aluminum alloys in 2-D and 3-D." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Summer2007/C_Merriman_072507.pdf.

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27

Li, Ching-Chang. "Use of iterative techniques for the rigid-viscoplastic finite element analysis." Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183139974.

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28

Tappin, Alan David. "Studies of trace metals in shelf waters of the British Isles." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330182.

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29

Banerji, Kingshuk. "Quantitative analysis of fracture surfaces using computer aided fractography." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/15381.

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30

KJERENGTROEN, LIDVIN. "RELIABILITY ANALYSIS OF SERIES STRUCTURAL SYSTEMS (PROBABILITY, DESIGN, FATIGUE)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187909.

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Reliability analysis of series structural systems with emphasis on problems typical for metal fatigue is addressed. Specific goals include the following: (1) Given the distribution of strength of the components and the distribution of external loads on the system what is the probability of failure of the system? (2) Given the target safety index for the system, what would be the target safety index for the components? Exact solutions in the analysis of series structural systems only exists for some special problems. Some of these special problems are investigated. In particular some special c

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31

Feinberg-Ringel, Karen Stacey. "Quantitative fractographic analysis of Al[subscript]2O[subscript]3/Al-25%Li metal martrix composite." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/19987.

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32

Julião, Fabiana Cristina. "Avaliação das condições microbiológicas e físico-químicas da água de reservatório domiciliar e predial: importância da qualidade dessa água no contexto da saúde pública." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/22/22133/tde-18072011-105108/.

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Na atualidade, as questões relacionadas ao monitoramento da qualidade da água destinada ao consumo humano, têm sido motivo de preocupação nos países de todos os continentes. No Brasil, no início do século XIX, houve uma melhoria da infraestrutura das redes de abastecimento público de água, no entanto, diante das intermitências do fornecimento surgiu a necessidade da utilização de reservatórios de água para suprir a demanda diária de consumo, principalmente nas áreas urbanas. Os reservatórios podem garantir a quantidade de água necessária diariamente, porém a ausência de cuidados mínimos com a

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33

Minnaar, Karel. "Comparison and analysis of dynamic shear failure behavior of structural metals." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16340.

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34

Mattisson, Emmy. "Increased leaching of metals as a result of foundation work." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232049.

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Heavy metal contamination in the environment is a global issue that is likely to increase in the future. This report investigates a construction area in which increased concentrations of the heavy metals cadmium, cobalt, copper, nickel and zinc and a decreased pH-value has been observed in the surface water recipient. The focus is on assessing contamination characteristics and identifying suitable remediation methods to avoid a river protected by environmental quality standards further downstream from getting contaminated. The bedrock in the area is sulphide containing and releases acidic leac

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35

Hewitt, C. D. "The development and application of trace metals analysis in clinical chemistry." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377737.

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36

Bi, Zhaoshun. "Speciation analysis of trace metals in natural waters using vibrating electrodes." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/9375/.

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The speciation of trace metals plays a very important role in conditioning their biogeochemical cycles in the marine system. Their species are found to be strongly related to organic matters such as humic acids (HA) and fulvic acids (FA). This thesis aims to develop appropriate techniques to improve our understanding of the speciation of some trace metals, mainly in marine waters. Lead (Pb), cadmium (Cd) and chromium (Cr) which are widely used in industry were analytzed. The concentration of lead in uncontaminated seawater is between 10 and 100 pM, whilst in coastal waters it is higher at up t

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37

Zhou, Yan. "Synthesis, photophysical and biological studies of lanthanide complexes for photodynamic therapy." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/467.

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1.2\xPrior to the PDT, we have also synthesized a series of water-soluble homoleptic lanthanides (Ln3+ = Gd, Er, and Yb) sandwich (DD) di-PEGylated porphyrin complexes. The Yb complex (YbDD) has shown the same NIR emission quantum yield as the highest record Yb complex in the literature (Yb-RhB), yet, the emission intensity is double compared to the Yb-N. This implies a new thinking about the quantity measurement for biological imaging. The brightness might be the prime factor for the development of luminescence in vitro/in vivo imaging agent rather than the emission quantum yield.

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38

Watkins, Gareth Mostyn. "Ligand isotope vibrational studies of metal(II) complexes with particular reference to heterocyclic N-oxides." Doctoral thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/17042.

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Includes bibliographical references.<br>A critical examination of the characteristic N-O vibrational frequencies of aromatic N-oxides questions the widely held assignment of αN-O (840cm⁻¹) and YN-O (47oon- 1). The present investigation supports the assignments of αN-O (470cm⁻¹) and γN-O (280cm⁻¹), with the assignment of the band at 840cm⁻¹ as being vring coupled with νN-O.

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39

Roy, Ajay K. Payton Lewis Nathaniel. "Finite element analysis and life estimation of a permanent cylidrical mold with Ansys and Coffin-Manson approach." Auburn, Ala., 2005. http://hdl.handle.net/10415/1283.

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40

Tanha, Ariana, and Daniel Zarate. "Landfill Mining: Prospecting metal in Gärstad landfill." Thesis, Linköpings universitet, Industriell miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-86427.

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All processes in society produce waste. In nature, the waste is normally used as a resource for another process, but in human societies waste is often discarded. These discarded materials end up in places for depositing waste known as landfills. The increase in population, and humans’ tendency to improve their quality of life, has led to an increase in consumption of material. More material consumption means generating more waste, and more waste means bigger landfills. The increasing size of landfills has brought some other issues, such as increased land use and higher environmental impact. Ho

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41

Mukunthan, Kannappar. "Properties of ultra fine grain [beta]-CuAlNi strain memory alloys." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26724.

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A method has been developed to produce grain sizes as low as 5µm in β-CuAlNi alloys and the effect of grain size on mechanical and strain-memory properties was studied. The thermomechanical treatment procedure involved two. sequential warm working and recrystallization steps at 600° C and 800° C respectively on eutectoid alloys. Three different eutectoid alloys, two with Ms temperature of around 0°C and one with Ms = 220° C were used for the present studies. Even at fine grain sizes, the specimens produced were of single β- phase type without any second phases. Two-stage characteristic stress

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42

Mason, Christopher James. "The use of microwave flow-through digestion in the analysis of trace metals and total nitrogen in soils." Thesis, University of Greenwich, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325665.

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43

Smith, Debbie A. "Analytical Methods for Toxic Metals and Proteins and Synthesis of Perovskites." Youngstown State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1289923061.

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44

Rossin, Joseph A. "Synthesis, characterization and reactivity of transition metal containing zeolites." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/76271.

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Transition metal containing zeolites (zeolite A and ZSM-5) were prepared by addition of various transition metal containing substrates to zeolite synthesis gels. Crystal growth data were recorded in order to determine the influence of the transition metal species on the rate of crystal growth. X-ray diffraction, oxygen adsorption, FTIR and SEM were utilized to evaluate crystal purity. X-ray photoelectron spectroscopy (XPS), chemical analysis and electron microprobe analysis were performed in order to ascertain the position (intrazeolitic versus surface) and homogeneity of the transition metal.

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45

Cho, Hyunjoong. "Development of advanced techniques for identification of flow stress and friction parameters for metal forming analysis." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1167699938.

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46

Vähäoja, P. (Pekka). "Oil analysis in machine diagnostics." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514280768.

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Abstract This study concentrates on developing and tuning various oil analysis methods to meet the requirements of modern industry and environmental analytics. Oil analysis methods form a vital part of techniques used to monitor the condition of machines and may help to improve the overall equipment effectiveness value of a factory in a significant manner. Worm gears are used in various production machines, and their breakdowns may cause significant production losses. Wearing of these gears is relatively difficult to monitor with vibration analysis. Analysis of two indicator metals, copper an

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47

Jones, Brittany Laurél. "Econometric analysis of the historical growth and volatility trends of various metals." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76124.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 58-59).<br>Post Malthusian economics, there is growing recognition of the impact technological change and advance has on market activity. By studying historical production and price trends, boundaries of feasible growth can be determined and, dependent on a firm's goals, materials that may require added recyclability, substitution, or engineering efficiency identified. Therefore, a contextual understanding of

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48

Abbas, Naseeba. "Analysis of phase transformations in hydrogenated titanium metals by non-isothermal dilatometry." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/12339.

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Includes bibliographical references (leaves 124-127).<br>Hydrogen was used as a temporary alloying element in CP Ti and Ti-6AI-4V. The microstructural evolution and phase transformations were monitored, before, during and after hydrogenation with in-situ dilatometric testing. Wrought CP Ti and Ti-6AI-4V specimens were pre-annealed and experienced four consecutive thermal cycles (Cycles 1-4) i.e. hydrogenation, post-hydrogenation, dehydrogenation and post-dehydrogenation, during dilatometric testing. The specimen in each thermal cycle was heated to 1000°C, heating rate 1°C/min (with an isotherm

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49

Mitchell, Linda. "Fluorescent sensor arrays to monitor heavy metals and therapeutic drugs in biological systems." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/26168.

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Sensitive and rapid detection of chemical analytes is a widespread challenge, particularly in areas with limited access to technical facilities. Optical sensor arrays are a promising technique to address this challenge as they can detect chemical analytes in environmental and biological fluids. There are many analytes with no suitable on-site detection methods, and to address this gap, this work outlines the development of several new systems. A set of coumarin sensors were investigated to determine a candidate for heavy metal sensing. Of the four sensors and solvents investigated, a thioco

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50

Mahenthirarajah, Thushitha. "Synthesis and characterisation of electronically active species." Thesis, University of St Andrews, 2009. http://hdl.handle.net/10023/954.

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An exploration of some early transition metal (oxy) fluoride systems using solvothermal techniques has been carried out. 30 novel materials have been synthesised, which fall into three classes based on different metal centres; vanadium (21), molybdenum (5) and niobium (4). Some of these also contain secondary metal centres, namely copper (22) and zinc (1). Simultaneously, the relationship between the SHG values and the crystal structures of the hilgardites family members Pb₂B₅O₉Cl, Pb₂B₅O₉Br, Sr₂B₅O₉Cl and Ba₂B₅O₉Cl was investigated. In particular, the Pb–containing members of the hilgardite f

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