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Tesis sobre el tema "Reactive processes"

Autor: Grafiati

Publicado: 11 de enero de 2025

Última modificación: 31 de julio de 2025

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1

Goller, Bernhard F. "Reactive nano silicon : mediated processes." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516960.

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In this thesis basic methods for the fabrication and characterisation of several nano-silicon containing systems are presented. Due to their morphology, these systems are highly reactive. Silicon wafers were used to prepare layers of porous silicon via electrochemically etching and micro– and nano– sized silicon powders were chemically etched in order to yield silicon nanoparticles. Dependent on the fabrication, particle size of the nanocrystals and porosity of the assemblies can be tailored over a wide range: mean particle sizes can be between 3 to 20 nm and porosities can be varied from 10 t

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2

Bullara, Domenico. "Nonlinear reactive processes in constrained media." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209073.

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In this thesis we show how reactive processes can be affected by the presence of different types of spatial constraints, so much so that their nonlinear dynamics can be qualitatively altered or that new and unexpected behaviors can be produced. To understand how this interplay can occur in general terms, we theoretically investigate four very different examples of this situation. <p><p>The first system we study is a reversible trimolecular chemical reaction which is taking place in closed one-dimensional lattices. We show that the low dimensionality may or may not prevent the reaction from rea

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3

Daniel, Guido. "Conceptual design of reactive distillation processes." Thesis, University of Manchester, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503083.

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Integrated processes such as reactive distillation offer the potential for reduced capital and operating costs compared to conventional flowsheets. In this work new tools for the identification of the optimal reactive distillation process with the optimal degree of integration are developed. A conceptual design method based on the boundary value method is used for a set of reactive distillation processes. The combination of a reactive distillation column with a pre-reactor is a valuable alternative to standalone reactive distillation columns. This thesis presents an approach to identify promis

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4

Harkin-Jones, Eileen M. A. "Rotational moulding of reactive plastics." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317442.

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5

Ströhlein, Guido. "Modeling of reactive- and bio-chromatographic processes /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16950.

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6

Shao, Haibing. "Modelling reactive transport processes in porous media." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-61738.

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Reactive transport modelling has wide applications in geosciences. In the ﬁeld of hydrogeology, it has been utilised to simulate the biogeochemical processes that disperse and degrade contaminants in the aquifer. For geotechnical applications, such as geological CO2 sequestration, the reaction of CO2 with the ambient saline aquifer determines the ﬁnal success of storage. In a radioactive waste repository, scientists rely on reactive transport models to predict the mobilisation of hazardous radionuclides within space and time. In this work, the multi-component mass transport code OpenGeoSys

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7

Murat, Muhamad Nazri. "Novel catalytic structures for reactive distillation processes." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527418.

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8

Stein, Erik [Verfasser]. "Synthesis of Reactive Distillation Processes / Erik Stein." Aachen : Shaker, 2003. http://d-nb.info/1181602440/34.

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9

Biller, Nicholas Charles Trinder. "Modelling and control of reactive distillation processes." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405850.

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10

Thomson, Douglas W. "Generation of reactive intermediates by reductive processes." Thesis, University of Strathclyde, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424308.

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11

Greskowiak, Janek Johannes. "Reactive transport processes in artificially recharged aquifers." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2006. http://dx.doi.org/10.18452/15582.

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In der vorliegenden Dissertation sollten die hydrogeochemischen Prozesse herausgearbeitet werden, die für die Wasserqualitätsänderung während eines ASR Experiments in Bolivar, Südaustralien und während der Versickerung in einem künstlichen Grundwasseranreicherungsbecken in Berlin von Bedeutung waren. Reaktive Stofftransportmodellierung des ASR Experiments in Bolivar, Südaustralien zeigte, dass die hydrochemischen Veränderungen in der direkten Umgebung des Injektionsbrunnens während der Speicherphase nur durch rapide Änderungen der Sauerstoff- und Nitrat reduzierenden Bakterienmasse erklärt we

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12

Amikiya, Emmanuel Adoliwine. "Flow and reactive transport processes in porous media." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85838.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Flow and reactive transport of chemical species is a very common phenomenon that occurs in natural and artificial systems. However in this study, the topic is related to acid mine drainage in the South African mining environment. Due to the hazards associated with acid mine drainage, prevention or treatment of mine effluent water before discharging to receiving waters and other environments is a necessity. A new time-dependent mathematical model is developed for a passive treatment method, based on multi-scale modelling of

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13

Giessler, Sabine. "Synthesis and Dynamic Optimization of Reactive Distillation Processes." Kyoto University, 2000. http://hdl.handle.net/2433/180939.

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14

Ait, Aissa Belaid. "Contribution to the synthesis of reactive distillation processes." Clausthal-Zellerfeld Papierflieger, 2008. http://d-nb.info/992300991/04.

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15

Siougkrou, Eirini. "Systematic methods for solvent design : towards better reactive processes." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/18827.

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The focus of this thesis is the development of novel methodologies for systematic identification of optimal solvents for chemical reactions. Two aspects are considered: the integrated solvent and process design using a mixed solvent, and the design of an optimal solvent using ab initio methods that do not rely on experimental data. A methodology is developed for the integrated design of a CO2-expanded solvent in a reaction process. Posing as objective function the cost of the process, for a defined production rate, an optimisation problem is formulated, with decision variables that include the

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16

Africano, Fatima. "Reactive processes during the discharge of high temperature volcanic gases." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211070.

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This study shows how the composition of gases released from a single magmatic source may be modified during their ascending path. The main processes that influence the composition of the gases in these high temperature fumarolic environments, are: 1) interactions with wallrocks during gas ascent, which change the fugacities of the metal volatile species and affect the equilibrium between major species (fH2S/fSO2; fH2/fH2O); 2) mixing with meteoric water with consequent Cl adsorption, which may account for the Cl depletion of the gases; 3) remobilisation of previously formed sublimates and/or i

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17

Al-Rashed, Mohsen Hassan Jaber. "A study of reactive precipitation processes using computational fluid dynamics." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286284.

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18

Wagner, M. G. "Process modelling using neural networks : an application to a reactive plasticating extruder." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309823.

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19

Nureldin, Hazem M. "An artificial neural network architecture system for real time reactive scheduling and control." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246499.

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20

Lau, C. C. "Development and assessment of a reactive simulation-based manufacturing planning and control system." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269057.

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21

Mayer, Jens-Christopher. "Transport processes of reactive trace gases in the atmospheric boundary layer." kostenfrei, 2008. http://opus.ub.uni-bayreuth.de/volltexte/2009/573/.

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22

Garge, Swapnil. "Development of an inference based control scheme for reactive extrusion processes." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 236 p, 2007. http://proquest.umi.com/pqdweb?did=1362532031&sid=11&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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23

Bunting, Andrew Stuart. "Characterisation of reactive ion etch processes for ternary III-V semiconductors." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361772.

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24

Reiter, Elke Christine. "Reactive oxygen species/antioxydants as redox-signalling modulators in inflammatory processes /." Bern : [s.n.], 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000277019.

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25

Niesbach, Alexander [Verfasser]. "Design of Reactive Distillation Processes Using Bio-based Raw Materials / Alexander Niesbach." München : Verlag Dr. Hut, 2014. http://d-nb.info/1063221722/34.

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26

Chastaing, Delphine. "Reactive and inelastic processes in the gas-phase at ultra-low temperatures." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367745.

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27

Porkert, Sebastian. "Physico-Chemical Processes during Reactive Paper Sizing with Alkenyl Succinic Anhydride (ASA)." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-219620.

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Sizing (hydrophobization) is one of the most important process steps within the added-value chain of about 1/3rd of the worldwide produced paper & board products. Even though sizing with so-called reactive sizing agents, such as alkenyl succinic anhydride (ASA) was implemented in the paper industry decades ago, there is no total clarity yet about the detailed chemical and physical mechanisms that lead to their performance. Previous research was carried out on the role of different factors influencing the sizing performance, such as bonding between ASA and cellulose, ASA hydrolysis, size revisi

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28

Schröder, Benjamin. "Theoretical high-resolution spectroscopy for reactive molecules in astrochemistry and combustion processes." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0005-12DA-1.

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29

Li, Wei Ph D. Massachusetts Institute of Technology Department of Civil and Environmental Engineering. "Experimental and theoretical studies of reactive transport processes in soluble porous rocks." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/123229.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 207-219).<br>Underground reactive transport processes involve fluid flow and reactions (dissolution, precipitation, and pressure solution) driving the evolution of the rock-fluid systems, which may result in favorable processes such as increased oil production by reservoir acid stimulation, or undesired processes such as caves and subsidence. Flow and reaction in the rock matrix often induce wormhol

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30

Vegh, Rusell. "Mechanisms and applications of photoinduced processes in fluorescent proteins." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/50126.

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In the current work, the photophysics and photochemistry of the phototoxic red fluorescent protein (RFP) KillerRed was investigated. KillerRed's phototoxicity makes it useful for studying oxidative stress on cell physiology and for cell killing in photodynamic therapy. Spectroscopic probes were used to show that the phototoxicity of KillerRed stems primarily from a type I photosensitization mechanism producing radicals. The production of radicals was supported by electron paramagnetic resonance (EPR) studies, where a long-lived radical was observed in KillerRed and two other RFPs (mRFP and DsR

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31

Gebhardt, Christoph R. "Reactive cluster impact dynamics and ion processes investigated by cluster impact mass spectrometry." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962138657.

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32

García, Montaño Julia. "Combination of Advanced Oxidation Processes and Biological Treatments for Commercial Reactive Azo Dyes Removal." Doctoral thesis, Universitat Autònoma de Barcelona, 2007. http://hdl.handle.net/10803/3252.

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La industria textil produce grandes cantidades de agua residual con un alto contenido de materia orgánica y color. Debido a la amenaza ambiental que supone su naturaleza refractaria, surge la necesidad del tratamiento antes de la descarga. Los procesos biológicos, físicos y químicos convencionales resultan ineficaces en la decoloración y mineralización completa de estos efluentes. Como alternativa emergen los Procesos Avanzados de Oxidación (PAOs), basados principalmente en la generación de radicales hidroxilo (HO·) altamente reactivos. Éstos pueden aplicarse de forma exclusiva o combinados co

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33

Wolf, Leah Michelle. "A field study of non-reactive transport behavior and evaluation of diffusion mediated processes." Thesis, The University of Arizona, 2003. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0264_sip1_w.pdf&type=application/pdf.

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34

Haßkerl, Daniel [Verfasser]. "Economic Performance Optimization by Direct Optimizing Control Applied to Reactive Distillation Processes / Daniel Haßkerl." Düren : Shaker, 2019. http://d-nb.info/1190525496/34.

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35

Kunze, Anna-Katharina [Verfasser]. "Intensified reactive absorption processes for CO2 separation using enzyme accelerated solvents / Anna-Katharina Kunze." München : Verlag Dr. Hut, 2016. http://d-nb.info/1084385406/34.

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36

Hall, Nicola Rachel. "The effects of C-reactive protein (CRP) isoforms on inflammation and wound healing processes." Thesis, Manchester Metropolitan University, 2017. http://e-space.mmu.ac.uk/618364/.

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C-reactive protein (CRP) is a homopentameric acute-phase inflammatory protein that exhibits elevated expression during inflammation. CRP can be found in its pentameric form (nCRP) or monomeric form (mCRP). To date there has been little research investigating the effects of these CRP isoforms in wound healing processes and age-related impaired healing, which is known to have an altered inflammatory response. The study investigated CRP isoform localisation in murine wounds (detected by immunohistochemistry) and circulating blood (measured by immunoblotting) using models of acute healing in young

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37

Schröder, Benjamin [Verfasser]. "Theoretical high-resolution spectroscopy for reactive molecules in astrochemistry and combustion processes / Benjamin Schröder." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/1216330557/34.

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38

Ndjaka, Ange. "THERMOPHYSICAL PROCESSES AND REACTIVE TRANSPORT MECHANISMS INDUCED BY CO2 INJECTION IN DEEP SALINE AQUIFERS." Electronic Thesis or Diss., Pau, 2022. http://www.theses.fr/2022PAUU3003.

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Le stockage du CO2 dans les aquifères salins profonds a été reconnu comme l'une des voies les plus prometteuses pour atténuer les émissions atmosphériques de CO2 et répondre ainsi aux enjeux du changement climatique. Cependant, l’injection du CO2 dans le milieu poreux perturbe considérablement son équilibre thermodynamique. La zone proche du puits d’injection est particulièrement impactée avec une forte réactivité géochimique associée à d’intenses échanges thermiques. Cela a un impact majeur sur l’injectivité du réservoir et l’intégrité du stockage. A ces effets s’ajoute une complexité supplém

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39

Rahim, Ismail Soraya. "A generalised modular framework for the the synthesis of nonideal separation and reactive separation processes." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/8765.

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This thesis presents a systematic approach for the synthesis of azeotropic separation and combined reactive/separation systems, utilising a mass and heat transfer phenomena based representation. The developed framework does not explicitly prepostulate process alternatives but instead investigates them as mass and heat exchange possibilities. The building block of process alternatives is based on a mass/heat transfer module between two properly defined streams consisting of two parts: a mass/heat exchange block, whereby mass and heat transfer takes place between streams, and a pure heat exchang

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40

Maibaum, Elaine Catherine. "Spectro-electro-array spectroscopy and the in-vitro modelling of metabolic processes and reactive intermediates." Thesis, Imperial College London, 2004. http://hdl.handle.net/10044/1/8599.

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41

Raza, Mohsin. "Synthesis of hydrogenated amorphous carbon (a-C:H) thin films by HiPIMS-based processes." Thesis, Linköpings universitet, Plasma och beläggningsfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84320.

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This thesis explores the feasibility of high power impulse magnetron sputtering (HiPIMS) to synthesize hydrogenated amorphous carbon (a-C:H) thin films in Ar-hydrocarbon ambient and the relationship between process parameters, gas phase composition and film properties. To this purpose a stable process based on HiPIMS and direct current magnetron sputtering (DCMS) has been developed. Four series of amorphous carbon thin films were deposited by hybrid HiPIMS-DCMS and pure DCMS processes at 15 mTorr pressure using different Ar-acetylene compositions and a substrate bias from 0 to -350 V. The effe

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42

Ivanova, Chalakova Mariyana. "Conceptual design and analysis of reactive distillation processes for the production of isooctane via indirect alkylation." Magdeburg docupoint, 2009. http://d-nb.info/1001012348/04.

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43

Falcone, Manuel [Verfasser], Dieter [Akademischer Betreuer] Bothe, and Michael [Akademischer Betreuer] Schäfer. "Direct Numerical Simulations of Reactive Transport Processes at Single Bubbles / Manuel Falcone ; Dieter Bothe, Michael Schäfer." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1183911602/34.

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44

Harris, Sean Anthony. "Studies of ion molecule reactive processes, electron impact ionisation, and inelastic collisions in state selected molecular beams." Thesis, University of Canterbury. Chemistry, 1997. http://hdl.handle.net/10092/7863.

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Alkali metal ion sources have been designed for the production of Li+, Na+ and K+ ion beams. The thermionic emission of alkali metal ions from heated synthetic zeolites is utilised to produce the alkali ions. As a precursor to crossed beam studies of the reactions of the alkali metal ions with spatially oriented symmetric top alkyl halides, the ion molecule chemistry of K⁺ with CH₃X and tertiary C₄H₉X where X= Cl or Br has been examined for collision energies up to 5 e V using a Drift Tube Mass Spectrometer. The electron impact ionisation cross sections for the inert gases, H₂, N₂, SF₆, CC1₃H

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45

Greskowiak, Janek Johannes [Verfasser], Asaf [Gutachter] Pekdeger, Gunnar [Gutachter] Nützmann, and Wilfried [Gutachter] Endlicher. "Reactive transport processes in artificially recharged aquifers / Janek Johannes Greskowiak ; Gutachter: Asaf Pekdeger, Gunnar Nützmann, Wilfried Endlicher." Berlin : Humboldt-Universität zu Berlin, 2006. http://d-nb.info/1208079069/34.

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46

Aqar, Dhia Y. "Modelling and Optimization of Conventional and Unconventional Batch Reactive Distillation Processes. Investigation of Different Types Batch Reactive Distillation Columns for the Production of a Number of Esters such as Methyl Lactate, Methyl Decanoate, Ethyl Benzoate, and Benzyl Acetate using gPROMS." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17139.

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The synthesis of a number of alkyl esters such as methyl lactate, methyl decanoate, and ethyl benzoate via esterification in a reactive distillation is quite challenging. It is due to the complexity in the thermodynamic behaviour of the chemical species in the reaction mixture in addition to the difficulty of keeping the reactants together in the reaction section. One of the reactants (in these esterification reactions) having the lowest boiling point can separate from the other reactant as the distillation continues. This can result in a significant drop in the reaction conversion in a conven

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47

Willmann, Matthias. "Scaling of subsurface processes in heterogeneous aquifers: from hydraulic testing to the use of memory functions." Doctoral thesis, Universitat Politècnica de Catalunya, 2008. http://hdl.handle.net/10803/32780.

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La heterogeneidad de la conductividad hidráulica es bien conocida, pudiendo cambiar varios órdenes de magnitud en poca distancia. Esto afecta nuestras observaciones de los procesos naturales. Para poder explicar la realidad normalmente nos basamos en modelos simplificados. Pero para incorporar correctamente en ellos las propiedades de los acuíferos, se debe pasar de escala local a escala de soporte y a escala de la malla del modelo numérico. Este proceso se llama Upscaling y puede comportar cambiar los parámetros de la ecuación conocida a escala local, o bien la derivación de una nueva ecuació

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48

Tekelu, Geberetsadike Tegenne. "Modelling reactive transport of acid mine drainage in groundwater : Effect of geochemical processes spatially variable flow source location and distribution." Thesis, KTH, Industriell ekologi, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32579.

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Impacts from mining waste deposits on groundwater resources have been recognized invarious parts of the world; though varied in scale depending on the composition of mineralsbeing mined, the level of technology employed and environmental commitment of thedevelopers. Mining activities usually involve milling, concentrating, and processing of oreswhich will result in a huge amount of waste, called tailings, usually deposited inimpoundments as a slurry, composed of fine grained geological material (uneconomicalminerals), chemicals utilized in the processs, and water. Oxidation of these deposits,

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49

Gallager, Kevin A. "Mass transfer and biosorption processes with Rhizopus oryzae as an absorbent of reactive dye and metal ions from aqueous effluent." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364591.

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50

Kremin, Christoph [Verfasser], Martin [Akademischer Betreuer] Hoffmann, Peter [Akademischer Betreuer] Schaaf, and Uwe [Akademischer Betreuer] Schnakenberg. "Fabrication and application of self-masked silicon nanostructures in deep reactive ion etching processes / Christoph Kremin. Martin Hoffmann. Peter Schaaf. Uwe Schnakenberg." Ilmenau : Universitätsbibliothek Ilmenau, 2010. http://d-nb.info/1008088250/34.

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