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Dissertations / Theses on the topic 'In situ chemical'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Darnell, Jason Ellis. "IN-SITU LEAD IMMOBILIZATION USING PHOSPHATE BASED BINDERS." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072004-145059/.

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The purpose of this study was to determine the optimum phosphate treatment method to stabilize lead contaminated soil from a firing range. Seven different phosphate sources at five different concentrations were added to soil collected from a firing range on a military base. A series of tests were performed to determine a generic phosphate treatment method. The selected generic phosphate treatment was compared to an untreated control soil sample and to four commercially available treatments provided by invited vendors selected from industry. The four vendors processes, control, and generic trea

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2

Maphutha, Malebelo. "In situ sintering study of model nickel catalysts." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13326.

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Includes bibliographical references.<br>Lipid catabolism plays a significant role in the survival of M.tb inside the host. The development of analytical techniques such as gas chromatography mass spectroscopy (GCMS) and liquid chromatography mass spectroscopy (LC-MS) has become popular as metabolomics tools in the study of such catabolic pathways. The development of biomarkers and internal standards to perform quantitative and qualitative analysis of metabolites in the catabolic pathway would be an attractive tool. Thus, cholesterol derivatives were synthesized as thia-, fluoro- and deuterium

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3

Clark, Peter. "Towards in-situ characterisation of formulated products." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6973/.

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Recently, the ability to characterise a formulated product during its manufacture has become very desirable due to the importance of maintaining control over its structure and electro-mechanical properties. The fields of process tomography and spectroscopy are set to play an important role in new technologies yielding in-situ characterisation of a product during chemical processing. This study has investigated such techniques with the aim to apply these tools to a relevant Johnson Matthey manufacturing line. Water, being a high di-electric, can be detected at very low concentrations using Elec

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4

Rogozinski, Jeffrey David. "In-situ frequency-dependent electromagnetic sensing for monitoring physical and chemical attributes during chemical processing." W&M ScholarWorks, 2000. https://scholarworks.wm.edu/etd/1539623978.

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The objective of this research was to develop an in-situ sensing technique that monitors the molecular-level response of ions and dipoles to an applied electric field in order to characterize the changes in state of a polymer resin during chemical processing. This technique needs to be capable of monitoring the reaction progress not only in the laboratory setting but also in-situ in the processing tool or reaction environment. Frequency Dependent Electromagnetic Sensing (FDEMS) was selected for this task.;This dissertation investigates the applicability of FDEMS to monitoring two types of proc

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5

Bahri, Syaiful. "In situ combustion for upgrading of heavy oil." Thesis, University of Salford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248917.

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6

Adewusi, Victor Adesegun. "Heavy oil recovery by forward in-situ combustion." Thesis, University of Bath, 1986. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370660.

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7

Tripathi, Ashok Burton Goodwin David G. "In-situ diagnostics for metalorganic chemical vapor deposition of YBCO /." Diss., Pasadena, Calif. : California Institute of Technology, 2001. http://resolver.caltech.edu/CaltechETD:etd-09262005-143545.

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8

Rai, Yugal. "In-situ interface chemical characterisation of a boundary lubricated contact." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/12191/.

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An increasing demand for improved fuel efficiency and more reliable automotive engines has seen a number of approaches made to further improve the tribological performance in automotive engine parts. Engine oil lubricants extend the life of the moving parts operating under different conditions and also preventing any damages to these parts. However, although its applications are beneficial towards the moving parts, the environmental implications of these lubricants are somewhat harmful, leading to stricter regulations against its emissions. Strict emission requirements have led to a greater in

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9

Merchant, Akber. "In-situ fluidization for remediation of contaminated sand." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32966.

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Experiments were carried out to study the effects of jet velocity and the jet insertion depth on the characteristics of the fluidized region obtained when vertical and inclined water jets were submerged below the surface of saturated sand. Experiments were conducted using sand of mean particle size 507 mum. Water was injected into the sand through a tube of semicircular cross-section (internal diameter 0.55 cm) located at the wall of the tank, forming a half jet. At sufficiently high flowrate a U-shaped fluidized region formed around the jet tube. The fluidized zone was characterized by measur

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10

Indrijarso, Surat. "Development of pressurized thermogravimetry for in-situ combustion studies." Thesis, University of Salford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261489.

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11

Löfgren, Martin. "Diffusive properties of granitic rock as measured by in-situ electrical methods." Doctoral thesis, KTH, Chemical Engineering and Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121.

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<p>Diffusion into the rock matrix has been identified as one of the most important retention mechanisms for dissolved contaminants in fractured crystalline rock. In this thesis the diffusive properties of granitic rock, described by the formation factor, have been investigated by electrical methods. These methods are based on the Einstein relation between diffusivity and ionic mobility. Formation factors have been obtained both in the laboratory and in deep lying rock in-situ. </p><p>At present, two locations in Sweden, Forsmark and Oskarshamn, are undergoing site investigations for the siting

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12

Trnka, Jeremiah. "Treatability study for the in situ chemical oxidation treatment of groundwater." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Summer2009/j_trnka_071609.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, August 2009.<br>Title from PDF title page (viewed on Sept. 10, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 14-17).

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13

ANJOS, ANDREA CRISTINA CARVALHO DOS. "ANALYSIS OF AN IN SITU TABULATION STRATEGY OF COMBUSTION CHEMICAL KINETICS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19456@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A simulação numérica de processos de combustão é uma ferramenta cada vez mais utilizada para o projeto, a análise e a otimização de turbinas, motores e fornos de combustão, entre outros. No entanto, um dos principais inconvenientes que limitam a descrição fiel da realidade de modelos de combustão é o esforço computacional necessário para a solução das equações de transporte das propriedades do escoamento reativo, como frações de massa das espécies químicas, que incluem um termo fonte não linear associado à lei de Arrhenius. A rigi

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14

Badmaarag, Ulzii-Orshikh. "Optical Chemical Sensing Device for In-situ Non-Invasive Gas Monitoring." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583155117533193.

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15

Mangesana, Nobathembu. "Developing a methodology for characterising in-situ viscosity profiles in tumbling mills." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/16917.

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Milling is the most expensive operation in a mineral processing circuit and accounts for the highest amount of energy utilized. The efficiency of the milling process is affected by the rate of breakage of bigger rocks and the rate of transport of the slurry within and out of the mill. The transport of material in the mill is dependent on the rheological properties of the slurry such as viscosity. Viscosity is therefore one of the important parameters that influences the transport of the material in the mill. Slurries in tumbling mills are known to exhibit non-Newtonian behaviour. This means sl

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16

Kim, Hyung Rae. "Chemical Looping Process for Direct Conversion of Solid Fuels In-Situ CO2 Capture." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250605561.

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17

Na, Jeong-Seok. "Nanoscale Assembly for Molecular Electronics and In Situ Characterization during Atomic Layer Deposition." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-07062009-143027/.

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The work in this dissertation consists of a two-part study concerning molecular-based electronics and atomic layer deposition (ALD). As conventional âtop-downâ silicon-based technology approaches its expected physical and technical limits, researchers have paid considerable attention to âbottom-upâ approaches including molecular-based electronics that self assembles molecular components and ALD techniques that deposit thin films with atomic layer control. Reliable fabrication of molecular-based devices and a lack of understanding of the conduction mechanisms through individual molecules still

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18

Mandal, Anasuya. "An alternative diagnostic method using microneedles for sampling the immune system in situ." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111414.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 109-123).<br>Current protocols for immune system monitoring involve the collection of cells from blood or cerebrospinal fluid. However, since major populations of immune cells reside within tissues, these invasively-obtained body fluid samples are, at best, indirect indicators of the status of the immune system. Direct tissue sampling through biopsies is difficult to incorporate into long-term, repetitive, longit

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19

Xiong, Rentian. "In situ sensing for chemical vapor deposition based on state estimation theory." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22711.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Gallivan, Martha; Committee Member: Ferguson, Ian; Committee Member: Henderson, Cliff; Committee Member: Hess, Dennis; Committee Member: Lee, Jay.

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20

Li-Pook-Than, Andrew. "In situ Raman spectroscopy of carbon nanotube growth by chemical vapor deposition." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28500.

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In situ Raman spectroscopy was used to track the growth of carbon nanotubes grown by chemical vapor deposition. The dynamic evolution of three kinds of Raman bands, namely the G, D, and RBM bands, was analyzed. The evolution of nanotube diameter and crystallinity was analyzed from the RBM and D/G band evolution, respectively. A characteristic growth sequence consisting of four distinct stages of growth was consistently observed. The growth rate of each stage was found to decrease with increasing temperature, possibly due to parasitic, competing reactions, and energy scales for each stage are e

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21

Williamson, Alex Stewart. "Dielectric Sensor In-Situ Control of the RTM Composite Fabrication Process." W&M ScholarWorks, 1990. https://scholarworks.wm.edu/etd/1539625589.

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22

Salim, Sateria. "In-situ Fourier transform infrared spectroscopy of chemistry and growth in chemical vapor deposition." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11378.

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23

Cho, Soon. "Real-Time In-Situ Chemical Sensing in AlGaN/GaN Metal-Organic Chemical Vapor Deposition Processes for Advanced Process Control." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1798.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Material Science and Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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24

Khasu, Motlokoa. "In situ study of Co₃O₄ morphology in the CO-PROX reaction." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/24905.

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The preferential oxidation (PROX) reaction is an effective process for the removal of trace amounts of carbon monoxide from a reformate stream. Tricobalt tetraoxide (Co₃O₄) is the candidate for CO-PROX in a H₂ rich gas and could be an alternative to the rare and expensive PGMs. This study investigates the effect of different Co₃O₄ morphologies in the preferential oxidation of carbon monoxide in H₂ rich gas. Reports have shown morphology dependency in CO oxidation in the absence of hydrogen, no study has investigated the morphology dependency in H₂ rich atmospheres. Different morphologies of na

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25

Nyathi, Thulani Mvelo. "Supported Cobalt Oxide Catalysts for the Preferential Oxidation of Carbon Monoxide: An in situ Investigation." Doctoral thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/33946.

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The study presented in this thesis has placed great focus on Co3O4-based catalysts for producing CO-free H2-rich gas streams for power generation using proton-exchange or polymer electrolyte membrane fuel cells (PEMFCs). The removal of CO (0.5 – 2%) is essential as it negatively affects the performance of the Pt-based anode catalyst of PEMFCs. Among the various CO removal processes reported, the preferential oxidation of CO (CO-PrOx) to CO2 is a very attractive catalytic process for decreasing the CO content to acceptable levels (i.e.,< 10 ppm) for operating the PEMFC. Co3O4-based catalysts ha

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26

Forsey, Steven. "In situ Chemical Oxidation of Creosote/Coal Tar Residuals: Experimental and Numerical Investigation." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/1275.

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Coal tar, coal tar creosote and oily wastes are often present as subsurface contaminants that may migrate below the water table, leaving a widely distributed residual source of contaminants leaching to the ground water. <i>In situ</i> chemical oxidation is a potentially viable technology for the remediation of aquifers contaminated with creosote and coal tars. The oxidant of choice would be flushed through the contaminated area to oxidize aqueous contaminants and enhance the mass transfer of contaminants from the oil phase. A series of batch and column experiments were performed to asse

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27

Harden, John Michael. "Elucidation of key interactions between in situ chemical oxidation reagents and soil systems." Diss., Mississippi State : Mississippi State University, 2006. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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28

Baraga, Joseph J. (Joseph John). "In situ chemical analysis of biological tissue--vibrational Raman spectroscopy of human atheroschlerosis." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12875.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1992.<br>Includes bibliographical references (leaves 209-223).<br>by Joseph John Baraga.<br>Ph.D.

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29

Kazi, Rafiq Akhtar. "A high pressure kinetic study of the in-situ combustion process for oil recovery." Thesis, University of Salford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261611.

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30

Cunha, Alaine Santos da. "Aplicação de técnicas químicas de remediação em áreas contaminadas por compostos organoclorados." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/44/44138/tde-08012011-183046/.

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Grande parte das áreas contaminadas conhecidas atualmente advém de práticas passadas onde os cuidados com a proteção à saúde humana e ao meio ambiente eram desconhecidos ou ignorados. O uso indiscriminado de produtos solventes clorados fez com que tais compostos se tornassem uma das principais fontes de contaminação no setor industrial. Por serem compostos de alta toxicidade, quando presentes na água subterrânea, mesmo em baixas concentrações, a tornam imprópria para o consumo. Técnicas de remediação como atenuação natural, ou que envolvam bombeamento e tratamento de água subterrânea contamina

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31

Kong, Wei. "Reactive processing methods for functionalisation of polymers and in-situ compatibilisation of poly(ethylene terephthalate)-based blends." Thesis, Aston University, 2001. http://publications.aston.ac.uk/9629/.

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One of the main objectives of this study was to functionalise various rubbers (i.e. ethylene propylene copolymer (EP), ethylene propylene diene terpolymer (EPDM), and natural rubber (NR)) using functional monomers, maleic anhydride (MA) and glycidyl methacrylate (GMA), via reactive processing routes. The functionalisation of the rubber was carried out via different reactive processing methods in an internal mixer. GMA was free-radically grafted onto EP and EPDM in the melt state in the absence and presence of a comonomer, trimethylolpropane triacrylate (TRlS). To optinuse the grafting conditio

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32

Coffel, Joel. "Implementation and modeling of in situ magnetic hyperthermia." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2058.

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Health-care associated infections (HAIs) on medical implant surfaces present a unique challenge to physicians due to their existence in the biofilm phenotype which defends the pathogen from antibiotics and the host’s own immune system. A 2004 study in the U.S. showed that 2 to 4% of implanted devices become infected and must be treated via surgical explantation—a process that is both expensive and dangerous for the patient. A potential, alternative strategy to antibiotics and surgery is to use heat delivered wirelessly by

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33

Carabante, Ivan. "Study of arsenate adsorption on iron oxide by in situ ATR-FTIR spectroscopy." Licentiate thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26159.

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Stabilization of arsenic contaminated soils by iron oxides has been proposed as a remediation technique to prevent leaching of arsenate into the environment. However, fundamental studies are needed to establish under which conditions the complexes formed are stable. A new method based on ATR-FTIR spectroscopy was adapted to study the adsorption of arsenate species on iron oxides. The measurements required the use of D2O as solvent. The amount of arsenate complexes adsorbed on the iron oxide increased with decreasing pD in the range studied, viz. pD 4-12. Arsenate complexes adsorbed at pD 4 des

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34

Miller, Duane D. "In Situ Infrared Spectroscopy Study of Gold Oxidation Catalysis." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1152205534.

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35

Turner, Jessica S. "Investigating marine particle distributions and processes using in situ optical imaging in the Gulf of Alaska." Thesis, University of Alaska Fairbanks, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1605427.

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<p> The Gulf of Alaska is a seasonally productive ecosystem surrounded by glaciated coastal mountains with high precipitation. With a combination of high biological production, inputs of suspended sediments from glacial runoff, and contrasting nutrient regimes in offshore and shelf environments, there is a great need to study particle cycling in this region. I measured the concentrations and size distributions of large marine particles (0.06-27 mm) during four cruises in 2014 and 2015 using the Underwater Vision Profiler (UVP). The UVP produces high resolution depth profiles of particle concen

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36

Chaudhry, Zahra. "A study of optical, physical and chemical properties of aerosols using in-situ measurements." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9512.

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Thesis (Ph.D.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Dept. of Atmospheric and Oceanic Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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37

Chen, James. "In-situ study of the chemical composition of photochromic Yttrium Oxy-Hydrides thin films." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-389390.

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38

Ng, Kar Wei. "Enhancements in light output power by MOCVD patterned growth and in situ roughening /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20NG.

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39

Menghao, Chen. "Developing a novel in-situ polymerisation process for fully bioresorbable fibre reinforced composites." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/49215/.

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In recent decades, fully bioresorbable polymer composites with appropriate biocompatibility and mechanical properties have provided an exciting opportunity to replace conventional metal alloy implants. This work explores the development of a novel, one-step in-situ polymerisation (ISP) process for the manufacture of fully bioresorbable phosphate based glass fibre (PGF) reinforced composites with matrix materials of polycaprolactone (PCL), polycaprolactone-polylactic acid copolymer (PLA-PCL) and polylactic acid (PLA). Composites produced via conventional laminate stacking (LS) process were used

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Aberg, Christopher Mark. "Modification of Polymer Membranes: A Study of Crosslinking and In-Situ Growth of Palladium-Containing Nanoparticles in Polymer Matrices." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-07092008-182305/.

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A crucial step in obtaining pure hydrogen is separating it from other compoundsâmainly CO2âthat often accompany hydrogen in industrial chemical reactions. Advanced membrane technology may prove to be the key to the successful, economical production of molecular hydrogen for the eventual consumer market. Size-sieving glassy polymer membranes can separate H2 on the basis of its small size. Alternatively, reverse-selective rubbery polymers can expedite the passage and, hence, removal of CO2 due to its relatively high solubility in such membranes alone or in conjunction with dissociative chemical

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Tumuluri, Uma. "In-Situ Spectroscopic Investigation of CO₂ and SO₂ Adsorption Mechanisms on Amine Sorbents." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1407743891.

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Jacobs, Kelvin Stephen. "Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/5314.

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Bibliography: leaves 89-94.<br>Metathesis is a very versatile reaction, which allows the conversion of Simple, relatively inexpensive olefins into specialty, high-purity olefins which are useful intermediates in the fragrance, agricultural and many other specialty chemical industries. Supported molybdenum on alumina is an active heterogeneous catalyst for the metathesis of olefins. Its activity, as a function of time, passes a maximum. It is known that the activity of molybdenum-based catalyst increases up to monolayer capacity. Catalysts with various Mo-Ioadings were prepared by controlled ad

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Waldemer, Rachel H. "Determination of the rate of contaminant oxidations by permanganate : implications for in situ chemical oxidation (ISCO) /." Full text open access at:, 2004. http://content.ohsu.edu/u?/etd,20.

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Petersson, Karsten. "Combined formulations based on prodrugs and in situ gelling systems : design and pharmaceutical chemical characterisation /." [Cph.] : The Danish University of Pharmaceutical Sciences, Department of Pharmaceutics, 2004. http://www.dfh.dk/phd/defences/karstenpetersson.htm.

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45

Fuhrig, Leland T., and Leland T. Fuhrig. "In-situ chemical oxidation of 1,1-DCE in a low-conductivity zone using potassium permanganate." Thesis, The University of Arizona, 2006. http://hdl.handle.net/10150/626911.

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Injection of potassium permanganate (KMn04) was conducted in an effort to remediate a Superfund Site contaminated with 1, 1-Dichloroethene (1, 1-DCE) at the Samsonite building area of the Tucson International Airport in Tucson, AZ. In-situ chemical oxidation such as this has been an effective method of source zone remediation for several other sites contaminated with chlorinated compounds due to its ability to destroy the compounds relatively quickly and effectively. Laboratory tests were done to determine the correct amount ofKMn04 to use based on the levels of 1,1-DCE present in

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46

Huang, Dan. "In Situ Infrared Studies of Photooxidation of Ethanol and Bacteria on TiO2-Based Catalysts." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1398093214.

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47

Xu, Xiuyuan. "Interaction of Chemical Oxidants with Aquifer Materials." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2891.

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In situ chemical oxidation (ISCO) is a leading-edge technology for soil and groundwater remediation, and involves injecting a chemical oxidant (e. g. , permanganate, hydrogen peroxide, or persulfate) into the subsurface to deplete contaminant mass through oxidation. Since the delivery of the chosen oxidant to the target treatment zone must occur in situ, the interaction between the injected oxidant and the aquifer material is a key controlling factor for a successful ISCO application. While many published ISCO studies have focused on the interaction between an oxidant and target contam

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Lin, Feng. "Preparation and Characterization of Polymer TiO₂ Nanocomposites via In-situ Polymerization." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2849.

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Polymer nanocomposites are already a part of many important of worldwide businesses: automotive (molded part in cars), electronics and electrical engineering, household products, packaging industry, aircraft interiors, appliance components, security equipments. Among many nanocomposite precursors, TiO<sub>2</sub> nanopowder is increasingly being investigated due to its special properties. <br /><br /> The objective of this work is to synthesize and characterize polymer-TiO<sub>2</sub> hybrid nanocomposites. When dispersed at the nanoscale level TiO<sub>2</sub> could act as visually tra

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Slopek, Ryan Patrick. "In-situ Monitoring of Photopolymerization Using Microrheology." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7194.

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Photopolymerization is the basis of several multi-million dollar industries including films and coating, inks, adhesives, fiber optics, and biomaterials. The fundamentals of the photopolymerization process, however, are not well understood. As a result, spatial variations of photopolymerization impose significant limitations on applications in which a high spatial resolution is required. To address these issues, microrheology was implemented to study the spatial and temporal effects of free-radical photopolymerization. In this work a photosensitive, acrylate resin was exposed to ultravio

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Quig, Lauren Dekker. "Transport of Heat Activated Persulfate and Its Application for In-situ Chemical Oxidation of Residual Trichloroethylene." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2629.

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Abstract:

In situ chemical oxidation is a promising technology for the remediation of persistent subsurface contamination. Increasingly, the persulfate ion is being studied for use in these systems, both on its own as a strong oxidant and as the precursor to the even more reactive sulfate radical. Persulfate has been shown to treat a wide range of contaminants, from traditional Superfund contaminants such as chlorinated solvents to emerging pharmaceutical contaminants. Additionally, persulfate ISCO can be tailored to site and pollutant specific characteristics based on the method of persulfate activatio

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