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1

Lomheim, Sigbjørn. "Analysis of a Novel Coil Design for Axial Flux Machines." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23649.

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A novel coil design for permanent magnet axial flux machines is presented. An analysis of its performance regarding winding layout, cooling capability, cogging torque, and back-EMF is conducted. Different manufacturing and assembly methods are described. A prototype stator has been built and tested. The prototype stator has a 90% fill factor, and is an iron free wave-winded topology. The prototype has been analyzed using analytical approaches, and compared to the performance in the laboratory testing. An analysis of introducing iron in the stator has been done, where the effect of iron stator
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2

Bourgeois, Jacob. "Modeling effects of adding a flux channel to a planar magnet-coil actuator." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32875.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.<br>Includes bibliographical references (p. 38).<br>Planar magnet-coil actuators are used in many different MEMS devices. This report describes one way to improve the actuator range per current input of planar coil actuators. This is accomplished by adding a flux channel around and beneath the actuator's magnet. The Lorentz force is created by putting a current carrying planar coil over a magnet in an actuator assembly. The Lorentz force depends on the current vector and the magnetic field vector. In th
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3

Kokko, V. (Voitto). "Condition monitoring of squirrel-cage motors by axial magnetic flux measurements." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514269381.

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Abstract The aim of this research work is to develop a tool for condition monitoring of squirrel-cage motors using axial magnetic flux measurements, and to design a diagnostics system for electrical motors. The basic theory of the measurements and systems was found through literature reviews and was further developed from the experimental results of this research work. Fluxgate magnetometers and Hall effect sensors are not reliable enough for condition monitoring purposes, but measurements by flux coil sensors can reach adequate reliability. The useful frequency area of the flux coil sensor i
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4

Rankin, Douglas Findlay. "Investigations into pulsed ultra-high magnetic field single-turn coil systems and θ-pinch electromagnetically-driven flux compression devices". Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/34727.

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Magnetic flux densities exceeding 100 T are termed 'ultrahigh' magnetic flux densities and are necessarily developed using pulsed energies. Two particular laboratory techniques are commonly used to produce magnetic fields of this size; the single turn coil (STC) technique and the electromagnetically driven flux compression (EMFC) technique. Over recent years there has been a strong drive to improve both of these systems and to develop them further. This has primarily been achieved by analytical simulation as well as by innovative design solutions. This thesis investigates both techniques, and
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5

Oscarsson, Mattias. "Modelling and design approaches of magnetostrictive actuators." Licentiate thesis, Stockholm : Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4435.

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6

Keysan, Ozan. "A Non-invasive Speed And Position Sensor For Induction Machines Using External Search Coils." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610290/index.pdf.

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In industrial drives market, speed and position estimation are one of the most important subjects for accurate motor drives. Vector controlled drives has the best dynamic performance among AC motor drives. Sensorless vector control is one of the most studied one. However, sensorless drive systems fail at low or zero speeds and may not have enough accuracy. For better accuracy and speed range speed sensors or position encoders are usually essential. However, coupling of sensor and sensor prices introduces extra cost on the drive. Thus in order to reduce the cost of the drive a cheap and easy to
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7

Thelin, Peter. "Design and Evaluation of a Compact 15 kW PM Integral Motor." Doctoral thesis, KTH, Electrical Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3322.

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<p>This thesis deals with the integral motor of tomorrow, and particularly with a variable speed, sensorless permanent magnet synchronous motor with an integrated converter. The rated power is 15 kW at 1500 r/min. The outer dimensions are approximately the same as for the equivalent standard induction motor.</p><p>Control strategies for pumps and fans, i.e. suitable loads for variable speed motors, are briefly described. The huge energy savings that can be made by reducing the speed instead of throttling/choking the flow are pointed out. Compared to installing an induction motor with a separat
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8

Geier, Martin. "Influência dos parâmetros envolvidos no processo de união por interferência de tubos por cravamento eletromagnético." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/96295.

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A união por conformação eletromagnética de perfis tubulares de alta condutividade elétrica é um processo inovador e limpo que pode substituir com sucesso os processos convencionais de união baseados na fixação mecânica por parafusos, rebites, soldagem e adesivos estruturais. Esta tecnologia funciona a temperatura ambiente, permite a união de materiais diferentes e oferece potencial para promover novas aplicações na montagem de estruturas leves. Neste trabalho busca-se compreender a união por interferência de tubos por cravamento eletromagnético em termos de seus principais parâmetros com o obj
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9

Le, Van Vinh. "Développement de formulations intégrales de volume en magnétostatique." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT132/document.

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Ces dernières années, la Méthode Intégrale de Volume (MIV) a reçu une attention particulière pour lamodélisation des problèmes électromagnétiques en basse fréquence. Son intérêt principal est l’absencedu maillage de la région air, ce qui rend la méthode légère et rapide. Associée aux méthodes decompression matricielle la MIV devient aujourd'hui une alternative compétitive à la méthode deséléments finis pour la modélisation de dispositifs électromagnétiques ayant un volume d'airprépondérant.Ce rapport porte sur le développement de deux formulations intégrales de volume pour la résolution deprob
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10

Garg, Dhiraj Kumar. "Numerical modeling and simulation of polymerization reactions in coiled flow inverters." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE002/document.

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L’objectif de ce travail fut d’améliorer la modélisation et la simulation de la polymérisation radicalaire dans des réacteurs continus et discontinus. Une solution analytique explicite généralisée (AS) fut obtenue dans le cas de la polymérisation en masse/solution, homogène et isotherme menée dans un réacteur fermé de volume variable. Les différentes étapes considérées furent l'initiation, la propagation, le transfert au monomère, au solvant, à un agent de transfert de chaîne, la terminaison par combinaison et dismutation. Différents modèles rendant compte des effets de gel, de vitrification e
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11

Işık, Emre. "Magnetic flux generation and transport in cool stars." [Katlenburg-Lindau] Copernicus Publ, 2008. http://d-nb.info/988508087/04.

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12

Kenney, Crystal R. "Magnetic Flux Sensor for Hearing and Application." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/KenneyCR2005.pdf.

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13

Delord, Sophie Kusel. "Application de la cytométrie en flux aux pathologies du col utérin." Montpellier 1, 1989. http://www.theses.fr/1989MON11093.

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14

Wang, Chao. "Gene regulation and metabolic flux reorganization in aerobic/Anaerobic switch of E. coli." HKBU Institutional Repository, 2007. http://repository.hkbu.edu.hk/etd_ra/783.

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15

Rick, Christian. "Mesure cellule par cellule du nombre de copies de plasmide chez Escherichia coli." Université Louis Pasteur (Strasbourg) (1971-2008), 2005. http://www.theses.fr/2005STR13038.

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Toute l'information génétique nécessaire à la vie de la bactérie Escherichia coli est portée par son unique chromosome : une molécule d'ADN circulaire de 4,6 millions de paires de bases. En plus de son ADN chromosomique, une bactérie peut contenir des molécules d'ADN supplémentaires appelées plasmides. L'objet de cette thèse est la mise au point d'une expérience de mesure cellule par cellule du nombre de plasmides. Il s'agit de prendre, une par une, plusieurs milliers de bactéries et ensuite de compter le nombre de plasmides qu'elles contiennent. Pour cela nous avons utilisé des techniques de
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16

Fatarova, Maria. "The metabolic consequences of gene knockout to pathway flux in trypanosomes." Thesis, Toulouse, INSA, 2017. http://www.theses.fr/2017ISAT0025/document.

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Le contexte de ce projet de thèse était d’approfondir la compréhension du métabolisme de Trypanosoma brucei. Les trypanosomes utilisent différents types de sources de carbone, des hydrates de carbone ainsi que des acides aminés pour alimenter leurs besoins énergétiques et biosynthétiques (conditions imitant réellement l'environnement dans la mouche tse-tse). Les différences de thioesters d'acyl-CoA sont encore inconnues dans ces conditions. Une telle élucidation est essentielle pour comprendre les adaptations métaboliques de l'organisme au cours de son cycle de vie. Cet objectif pourrait être
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17

Anderson, Desmond Carl. "Chemical reactions involved in the desulphurisation of flue gases." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286829.

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18

Burchfield, Nicole Ashley. "Narrow Angle Radiometer for Oxy-Coal Combustion." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8423.

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A new method of power production, called pressurized oxy-fuel combustion, burns coal with CO2 and oxygen, rather than air, bringing us closer to the end goal of developing zero emission coal-fired utility boilers. However, high-pressure, high-temperature systems such as these are under-studied, and their behavior is difficult to measure. An accurate model for previously untested conditions requires data for validation. The heat release profile of flames and their radiative intensity is one of the key data sets required for model validation of an oxy-coal combustion system. A radiometer can be
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19

Delva, Rémy. "Apport pronostique de la cytometrie en flux dans le cancer du col uterin : experience du centre paul papin." Angers, 1991. http://www.theses.fr/1991ANGE1032.

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20

Matsumura, T., A. Kimura, H. Shimizu, Y. Yokomizu, and M. Goto. "Fundamental performance of flux-lock type fault current limiter with two air-core coils." IEEE, 2003. http://hdl.handle.net/2237/6786.

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21

Cassey, Barrie. "Role of the pyruvate dehydrogenase complex in the flux of carbon in Escherichia coli." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287693.

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22

Sundaram, Hari Prashanth. "SO₂ removal with coal scrubbing." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2035.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains vii, 42 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 33-34).
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23

Chopin, Francis. "Evolution du flux de matière, de l'architecture et de la rhéologie d'un prisme d'accrétion crustal." Strasbourg, 2010. https://tel.archives-ouvertes.fr/tel-00592281.

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L’évolution tectono-métamorphique d’un prisme d’accrétion orogénique est abordée à l’aide d’une étude géologique multiméthode. Le dôme d’Orlica-Śnieżnik (Sudètes) est situé au front d’un butoir rigide. Sa formation est expliquée par l’influx de croûte continentale subductée jusqu’à 50-60km de profondeur dans un prisme d’accrétion. La racine ainsi formée comprend une croûte inférieure felsique avec quelques lentilles basiques partiellement fondues en profondeur et séparées de la croûte moyenne (metasédiments) par une couche rigide d’orthogneiss. Cette infrastructure rhéologiquement hétérogène e
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24

Bledig, Stefan Albert. "Investigation of the genetic regulation affecting carbon flux through phosphoenolpyruvate in Escherichia coli K-12." Thesis, University of Warwick, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306975.

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25

Liu, Zhouyang. "Heterogeneous Catalytic Elemental Mercury Oxidation in Coal Combustion Flue Gas." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1512045805884364.

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26

Portela, Rui Miguel Correia. "Hybrid systems biology: application to Escherichia coli." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6143.

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Dissertation presented to obtain a Master degree in Biotechnology<br>In complex biological systems, it is unlikely that all relevant cellular functions can be fully described either by a mechanistic (parametric) or by a statistic (nonparametric) modelling approach. Quite often, hybrid semiparametric models are the most appropriate to handle such problems. Hybrid semiparametric systems make simultaneous use of the parametric and nonparametric systems analysis paradigms to solve complex problems. The main advantage of the semiparametric over the parametric or nonparametric frameworks lies in tha
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27

Ettarh, Clodagh Annmarie. "The chemistry of solids used in the abatement of nitrogen oxides from flue gases." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282147.

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28

Schmidt, Douglas Stephen. "Electrochemical removal of SOx from flue gas." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/10235.

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29

Urban, David Raymond. "A kinetic investigation of As and Se speciation within coal combustion flue gases using ab initio methods." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042806-133423/.

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30

Attili, Viswatej. "Capture and mineralization of carbon dioxide from coal combustion flue gas emissions." Laramie, Wyo. : University of Wyoming, 2009. http://proquest.umi.com/pqdweb?did=1939354121&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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31

Paredez, Jose Miguel. "Coal-fired power plant flue gas desulfurization wastewater treatment using constructed wetlands." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18255.

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Master of Science<br>Department of Civil Engineering<br>Natalie Mladenov<br>In the United States approximately 37% of the 4 trillion kWh of electricity is generated annually by combusting coal (USEPA, 2013). The abundance of coal, ease of storage, and transportation makes it affordable at a global scale (Ghose, 2009). However, the flue gas produced by combusting coal affects human health and the environment (USEPA, 2013). To comply with federal regulations coal-fired power plants have been implementing sulfur dioxide scrubbing systems such as flue gas desulfurization (FGD) systems (Alvarez-Ayu
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32

McHenry, Dennis John Jr. "Development of an electrochemical membrane process for removal of SOx/NOx from flue gas." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/11698.

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33

Deepti. "Application of a spatially referenced water quality model to predict E. coli flux in two Texas river basins." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2878.

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34

Kurfűrst, Jiří. "Optimalizace vibračního mikrogenerátoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217883.

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The article describes how to produce energy necessary for sensor supply. These generators are used as a local source operating on vibratory principle. Mechanical vibrations that occur in moving machines, in nature etc. are used in order to gain required energy. So are kinesis principles and analysis employed in some of the avaible generators. It also contains patent and literary background research. Work is oriented to solving mechatronic perimeter, in the concrete micro - generator. Mechatronic perimeter piles from seat power control parts and mechanical parts, where common solving equation s
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35

Tong, Giang. "Oxidation of mercury during selective catalytic reduction of nitric oxide." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009p/tong.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2009.<br>Additional advisors: Heng Ban, Chih-Hsiung Cheng, Thomas K. Gale, Melinda M. Lalor. Description based on contents viewed June 3, 2009; title from PDF t.p. Includes bibliographical references (p. 113-123).
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36

Jurado, Pontes Nelia. "Experimental and modelling studies of coal/biomass oxy-fuel combustion in a pilot-scale PF combustor." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9310.

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This thesis focuses on enhancing knowledge on co-firing oxy-combustion cycles to boost development of this valuable technology towards the aim of it becoming an integral part of the energy mix. For this goal, the present work has addressed the engineering issues with regards to operating a retrofitted multi-fuel combustor pilot plant, as well as the development of a rate-based simulation model designed using Aspen Plus®. This model can estimate the gas composition and adiabatic flame temperatures achieved in the oxy-combustion process using coal, biomass, and coal-biomass blends. The fuels use
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37

Fouchet, Pierre. "Caractérisation de l'hétérogénéité de populations bactériennes par cytométrie en flux : études de paramètres physiologiques et structuraux." Compiègne, 1994. http://www.theses.fr/1994COMPD696.

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La cytométrie en flux permet une analyse quantitative de la physiologie et la caractérisation de l'hétérogénéité de populations cellulaires. Ce travail montre l'intérêt de cette technique pour l'étude de populations bactériennes et souligne l'influence du microenvironnement sur la physiologie d'une souche sauvage de Rhizobium meliloti (symbiose entre la bactérie et le végétal, culture en batch de cellules libres et immobilisées dans un gel polysaccharidique) et d'une souche recombinée d'Escherichia coli (culture en batch et en continu de cellules libres). L'étude de la physiologie de R. Melilo
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38

Brooker, Bryan Daniel. "INVESTIGATION OF MICROALGAE GROWTH KINETICS USING COAL-FIRED FLUE GAS AS A CARBON SOURCE." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/527.

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ABSTRACT Investigation of Microalgae Growth Kinetics using Coal-Fired Flue Gas as a Carbon Source Bryan Daniel Brooker Energy related carbon dioxide (CO2) emissions make up the majority of the United States’ greenhouse gas emissions. Emissions must be alleviated to reduce the effects of global climate change. Microalgae cultivation sequesters CO2 while producing biomass. Algal biomass can provide a renewable feedstock for biofuel and electricity production, and ingredients for pharmaceuticals, nutraceuticals, pigments and cosmetics. Utilizing microalgae to mitigate CO2 emissions encourages ene
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39

Anuar, Shahrani Haji. "Environmental performance of air staged combuster with flue gas recirculation to burn coal/biomass /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487848891512393.

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40

Stimpson, Curtis K. "The Composition and Morphology of Coal Ash Deposits Collected in an Oxy-Fuel, Pulverized Coal Reactor." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3225.

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Coal ash deposits were collected in a 160 kWth, down-fired oxy-coal reactor under staged and unstaged conditions for four different coals (PRB, Gatling, Illinois #6, and Mahoning). Concentration measurements of carbon, oxygen, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, potassium, calcium, titanium, chromium, manganese, iron, nickel, strontium, and barium were gathered from each deposit sample using scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS). Backscattered electron micrographs for each deposit sample were analyzed to gather morphological d
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41

Seneviratne, Hemantha Revata. "Evaluating sorbents produced from waste to remove mercury in simulated flue gases from coal combustion." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/11231.

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Coal-fired utility plants are the largest anthropogenic source of mercury emiSSIOns. Mercury abatement legislation for these plants is in place in Canada and U.S.A. Several facilities are achieving mercury emission reductions by using commercial activated carbons. However, these carbons are expensive. The present project aimed to determine mercury capture efficiencies of some fly ashes and sorbents produced from scrap tyre rubber and sewage sludge, compared to the effectiveness of commercial active carbons. E.U. legislation limits the methods available for disposing of waste materials, using t
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42

Chassagnole, Christophe. "Chaîne de biosynthèse de la thréonine chez Escherichia Coli Tir-8 : étude expérimentale, modélisation et contrôle." Bordeaux 2, 1998. http://www.theses.fr/1998BOR28607.

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43

Hoffmann, Sabrina. "Minimale Flussmoden als theoretisches Konzept für die funktionelle Analyse und modulare Beschreibung zellulärer Stoffwechselnetzwerke." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16444.

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Der Stoffwechsel der Zelle besteht aus chemischen Reaktionen und Transportprozessen, deren Umsatzraten (Stoffflüsse) das Ergebnis genetischer, translationaler und metabolischer Kontrolle sind. Stoffflüsse erlauben daher wertvolle Einblicke in das interne Zellgeschehen, sind jedoch -- wenn überhaupt -- nur unter großem Aufwand experimentell bestimmbar. Ihre Vorhersage mittels mathematischer Modelle ist ebenfalls komplex; vereinfachend wird angenommen, der Stoffwechsel unterliege einer optimalen Regulation, wobei Optimalität vielfältig interpretiert wird. Die in dieser Arbeit entwickelte Me
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44

Wang, Kelin. "Mercury Transportation in Soil Using Gypsum from Flue Gas Desulphurization Unit in Coal-Fired Power Plant." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1199.

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This work investigates mercury flux in soil amended by gypsum from flue gas desulphurization (FGD) units of coal-fired power plants. There are two phases of this research, including field and greenhouse studies. Previous studies indicate that FGD gypsum could increase corn yield, but may lead to more mercury uptake by corn. Recent studies have been carried out in greenhouses to investigate mercury transport in FGD gypsum treated soil. Major aspects include uptake of mercury by plants and emission of mercury into the atmosphere based on application rates of FGD gypsum. Additional aspects includ
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45

Wilcox, Jennifer. "On the path to elucidating the speciation of mercury in the flue gases of coal combustion." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280573.

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The goal of this research is to understand the speciation of mercury in the flue gases of coal combustion. As the flue gas cools, thermochemical equilibrium calculations indicate that elemental mercury, Hg⁰, is converted to oxidized mercury, Hg²⁺, in the form of HgO or HgCl₂. Hg⁰ is insoluble in water, HgO has low solubility in water and HgCl₂ is highly soluble in water. Since HgCl₂ is water-soluble, it can be captured in wet chemical scrubbers to prevent its release to the atmosphere. Therefore, the understanding of the mechanisms of mercury's oxidation in flue gases is paramount when conside
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46

Li, Can. "Simultaneous Removal of Elemental Mercury and NO over Modified SCR Catalyst in Coal Combustion Flue Gas." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin161374169547422.

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47

Norris, Pauline Rose Hack. "Arsenic and Selenium Distribution in Coal-Fired Plant Samples." TopSCHOLAR®, 2009. http://digitalcommons.wku.edu/theses/52.

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Resumo:
Arsenic and selenium distributions in coal-fired plant samples are studied. This research includes arsenic and selenium concentrations in samples of coal, fly ash, bottom ash, economizer ash, Flue Gas Desulfurization (FGD) slurry and flue gas taken from four power plants with the goal being to examine the distribution of these metals in these materials and calculate a materials balance for the system. All samples were analyzed using ICP-ES. This research shows that 60-80% of the arsenic in coal-fired plant samples will be associated with the fly ash. Approximately 35-55% of the selenium will b
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48

Cheng, Chin-Min. "Leaching of coal combustion products field and laboratory studies /." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1133195856.

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49

Franklin, Michael J. "Calculation, comparison and modeling of single channel proton flux across reconstituted wildtype and mutant F₀ of the F₁F₀ ATPase from Escherichia coli." Connect to online resource - WSU on-site and authorized users, 2003.

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50

Okano, Terumi. "High temperature mercury oxidation kinetics via bromine mechanisms." Worcester, Mass. : Worcester Polytechnic Institute, 2009. http://www.wpi.edu/Pubs/ETD/Available/etd-012509-223212/.

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