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Thèses sur le sujet « Fine chemical »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 19 juillet 2025

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1

Lau, Wai Ngar. "Zeolite membrane microreactor for fine chemical production /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CENG%202006%20LAUW.

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Yasmin, Samina. "Engineering of P450cam for fine chemical synthesis." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497160.

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3

Asmatulu, Ramazan. "Advanced Chemical-Mechanical Dewatering of Fine Particles." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26604.

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In the present work, novel dewatering aids and a novel centrifuge configuration were developed and applied for the purpose of dewatering fine particles. Three different types dewatering reagents were tested in different filtration and centrifugation units. These chemicals included low-HLB surfactants, naturally occurring lipids, and modified lipids. Most of these reagents are insoluble in water; therefore, they were used in solutions of appropriate solvents, such as light hydrocarbon oils and short-chain alcohols. The role of these reagents was to increase the hydrophobicity of the coal and

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4

Msutu, Ath'enkosi. "New CO₂ chemistry for fine chemical synthesis." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/13102.

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Includes abstract.~Includes bibliographical references (leaves 89-96).<br>There is a great need in the chemical industry for developing CO2 as a C1 building block as an important step towards "green chemistry". CO2 is also attractive as a chemical feedstock because it is readily available, inexpensive, nontoxic and it can replace toxic building blocks such as phosgene and CO. Industrially, megatons of CO2 are used each year for the production of urea, inorganic carbonates, salicylic acid, and polycarbonates, yet this is still miniscule compared to the immense potential that is still yet to be

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5

Elmekawy, Ahmed. "Bifunctional supported catalysts for fine chemical synthesis." Thesis, University of Huddersfield, 2014. http://eprints.hud.ac.uk/id/eprint/23325/.

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The objective was to prepare and optimise solid acid and solid base catalysts for liquid phase reactions. The approach has been to functionalize porous silica support materials with acid and base catalytic groups. Solid acid, solid base and bifunctional solid acid/base catalysts were studied. Evidence for acid-base cooperative catalytic mechanisms was found, suggesting that these bifunctional catalysts could show significant advantages over singly functionalized materials of mixtures thereof. Silicas functionalized with tethered aminopropyl groups were prepared by both a grafting method and a

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de, Albuquerque Fragoso Danielle Munick. "Lignin conversion to fine chemicals." Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/30847/.

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The large availability of Kraft lignin as an industrial by-product and its polyaromatic characteristic, is ideal to consider the potential for recycling it into fine chemicals. To depolymerise lignin, solvolysis and hydrogenolysis experiments were performed. This research considered whether the low yields of products (fine chemicals) were related to the low content of β-O-4 bonds or if it was also associated to the dissolution of lignin in the solvent solution employed in the reactions. The type of solvents chosen to check the dissolution effect were those with low cost and were more sustainab

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7

McLoughlin, C. M. "Microwave drying of pharmaceutical and fine chemical molecules." Thesis, Queen's University Belfast, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273046.

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8

Chan, Chun Wong Aaron. "Ultraselective nanocatalysts in fine chemical and pharmaceutical synthesis." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:866296af-5296-4d2e-8e52-6499dacaef0f.

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Surface catalysed reactions play an important role in chemical productions. Developments of catalyst requiring high activity whilst improving on product selectivity can potentially have a profound effect in the chemical industry. Traditional catalyst modifications were focused on tuning the size, shape and foreign metal doping to form well defined metal nanoparticles of unique functionalities. Here, we show new approach to engineering of metal nanocatalysts via a subsurface approach can modify the chemisorption strength of adsorbates on the surface. Carbon modified nanoparticles were synthesis

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9

Burmenko, Irina. "Brownian dynamics simulations of fine-scale molecular models." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32330.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2005.<br>Includes bibliographical references (leaves 105-111).<br>One of the biggest challenges in non-Newtonian fluid mechanics is calculating the polymer contribution to the stress tensor, which is needed to calculate velocity and pressure fields as well as other quantities of interest. In the case of a Newtonian fluid, the stress tensor is linearly proportional to the velocity gradient and is given by the Newton's law of viscosity, but no such unique constitutive equation exists for non-Newtonian fluids. In

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10

Lazar, A. "Metal-organofunctionalized SBA-15 catalysts for fine chemical syntheses." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/4559.

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11

Breed, Ashley Wayne. "Beneficiation of fine coal using the air-sparged hydrocyclone." Master's thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/21831.

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Bibliography: pages 173-185.<br>The Air-Sparged Hydrocyclone (ASH) is a high capacity flotation device which is alleged to be more efficient for the flotation of fine particles than conventional flotation equipment. The principal aims of this thesis were to investigate the use of an ASH in the flotation of South African coal ultrafines (-150 micron), and to determine the effect of various design and operating parameters on the performance of the process, in terms of the product yields and grades obtainable. The testwork was carried out on a typical Witbank coal, from the Kleinkopje Colliery, w

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12

Farrell, E. "Microwave-assisted drying of regulated pharmaceutical and fine chemical compounds." Thesis, Queen's University Belfast, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431608.

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13

Mullan, E. "Use of a rotating disc reactor for fine chemical synthesis." Thesis, Queen's University Belfast, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432520.

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14

Mosavat, Nasim. "Electrokinetic Treatment of Fine-grained Soils with Chemical Enhancement Solutions." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367245.

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The electrokinetic (EK) soil treatment method is a comparatively new technology. It is being investigated in some parts of the world as a feasible and practical in-situ soil remediation and treatment method. When the application of traditional ground improvement techniques (e.g. surcharge, preloading, etc) is not practical for a particular situation, innovative approaches such as EK technique can be considered. The principles of the EK treatment method involve applying a low direct current (DC) or a low potential gradient to arrays of electrodes inserted in the low permeable soils that cannot

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15

Zavahir, Fathima Sifani. "Development of visible light photocatalysts for organic fine chemical production." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96049/1/Fathima%20Sifani_Zavahir_Thesis.pdf.

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Devising new photocatalysts that can harvest light energy to drive chemical processes is in the forefront of chemical research. It aims at limiting the use of depleting fossil fuel energy, better understanding optical properties of materials and developing green chemical synthesis processes. During this doctoral work, three different types of photocatalysts, based on titanium dioxide, gold nanoparticles and vanadium clusters, have been designed and evaluated for synthetically important organic chemical reactions under visible light irradiation at near ambient conditions.

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Lam, Cheun U. You Van. "Solids motion in fluidised beds of fine particles." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/809/.

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Although there has been ongoing research on fluidised beds for the past 70 years, the interaction between particles and rising bubbles and the general solids motion in bubbling fluidised beds are still not fully understood. The work presented in this thesis uses the method known as Positron Emission Particle Tracking (PEPT) to track the motion of a single radioactively labelled particle inside a fluidised bed. Recent developments in PEPT include new ways of labelling micron sized tracer particles that can be as small as 60 μm and the new mobile camera system also known as the Modular PEPT came

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17

Muszalski, Piotr. "The role of ultrafine particles in oil sands fine tailings reduction." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9700.

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Fine tailings exhibit extremely poor dewatering characteristics. The research presented here deals with two closely related projects. The first project concentrated on finding an efficient treatment method for already existing fine tailings. The second project was to evaluate process modifications aimed at fine tailings reduction and to develop an understanding of the effect of electrolyte in the process water of the characteristics of fine tailings. The behavior of ultrafines separated from fine tailings was further investigated. A $\sp2$H NMR technique was applied to determine the gelation r

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18

Mwale, Adolph Ntaja. "A mathematical model for predicting classification performance in wet fine screens." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20122.

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Screening is a well-known classification process in the minerals processing industry. The process involves separation of fine particles from coarse particles based on size and is applicable to both dry and fine screening. Fine screening is normally carried out wet. Until recently, fine wet screening had been limited to relatively low throughput applications. Developments in the recent past have seen the evolution of fine screening to high capacity applications. It has found application in operations such as closed circuits with a mill in place of hydrocyclones. However, even though development

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19

Bunt, John Reginald. "Development of a fine coal beneficiation circuit for the Twistdraai Colliery." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/20196.

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Bibliography: p. 167-178.<br>The principal aim of this thesis was to develop a fine coal beneficiation circuit for the Twistdraai Colliery capable of achieving.a saleable 10.0% ash (28 MJ/kg CV) product. Gravity circuit testing involved a comparative study of a conventional double-stage Spiral circuit and a Stokes upward-current washer when treating Twistdraai <850J.1m x 106J.1m fine coal. In addition, froth flotation technologies, in the form of the Microcel column and the Jameson cell were also tested in order to ascertain whether they can be suitably applied · to the Twistdraai naturally fi

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20

Stonestreet, Paul. "Reverse flotation : a novel process for the beneficiation of fine coal." Doctoral thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/21990.

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Bibliography: pages 157-162.<br>The beneficiation of ultrafine coal by froth flotation is a widely used process, and its importance for the treatment of -0.1 mm coal has been appreciated of late in South African coal washing plants. A number of problems adversely affect the efficiency of this process, such as poor liberation, poor floatability, gangue entraiment/entrapment, and high mass recovery which can lead to throughput limitations in coal flotation equipment. Reverse coal flotation is a novel process which has been proposed to address three problems occurring in the conventional, "forwar

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21

Roldan-Villasana, Edgardo Javier. "Modelling and simulation of hydrocyclone networks for fine particle processing." Thesis, University of Manchester, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264312.

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22

Spillmann, Adrian. "Flowability modification of fine powders by plasma enhanced chemical vapor deposition /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17927.

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23

Moser, Matthew A. "Micro-and pulsed-plasmas fine tuning plasma energies for chemical analysis /." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2534.

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Thesis (Ph. D.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains ix, 99 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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24

Lancaster, Thomas M. (Thomas Michael) 1977. "Silica mesocellular foam and carbon nanofoam for fine chemical synthesis and separation." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29373.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2004.<br>Includes bibliographical references.<br>In chromatography, the selective separation for large molecules, polymers, and proteins is of particular interest. To achieve quality separations, the stationary phase should exhibit pore diameters greater than 10 nm to facilitate the diffusion of large analytes throughout the stationary phase. In packed-bed applications, narrow particle and pore size distributions and uniform particle shape would lead to improved separations. Thus, spherical stationary phase

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Deglon, David Alan. "A hydrodynamic investigation of fine particle flotation in a batch flotation cell." Doctoral thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/5375.

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Loponov, Konstantin Nikolayevich. "Development of a scalable photochemical reactor for syntheses of fine chemicals." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/35523/.

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This study is in the area of sustainable chemical technology and is ultimately aimed at developing a novel generic approach towards efficient, clean, safe and scalable synthesis of important intermediates for pharmaceutical applications and catalysis using nonthermal activation of chemical bonds. Current study is focused on molecular activation by light, specifically addressing the class of singlet oxygen reactions. A laboratory-scale annular recirculating photoreactor and a scalable microreactor unit were designed, assembled and tested in oxygenation of α-pinene and stereoselective oxygenatio

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Yalamaç, Emre Akkurt Sedat. "Preparation of Fine Spinel and Cordierite Ceramic Powders By Mechano-chemical Techniques/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/malzemebilimivemuh/T000434.pdf.

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Jeong, Sueng Won. "Influence of physico-chemical characteristics of fine-grained sediments on their rheological behavior." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/24116/24116.pdf.

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29

Chatterjee, Sourav. "Design of a radiofrequency heated micro trickle bed reactor for fine chemical synthesis." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.695300.

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Multi phase catalytic reactions such as hydrogenations, oxidations etc. are frequently encountered in the pharma and fine chemical industries. Multiphase reactor systems generally used in such processes were targeted for improvement in this research. This research project begins by analysing the benefits of process intensification by scaling down of conventional reactor systems. A brief survey on different microreactor technologies were carried out in the first chapter, which was then followed by chapter 2, describing different experimental methods adopted in this research. In the first part o

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CODAZZI, VERA. "Breaking phylogenetic barriers for fine and bulk chemical products in engineered Saccharomyces cerevisiae." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/19692.

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Industrial biotechnologies allow today to obtain both fine and bulk chemicals and yeasts as cell factories can produce many products belonging to both field (Branduardi et al., 2008, Porro and Branduardi, 2009). Among yeasts, Saccharomyces cerevisiae still represents the microorganism of election to develop such cell factories. As regard bioethanol production, yeasts utilization is well established for its natural fermentation ability, but new generation biofuels require the development of strain more and more robust, able to face conditions imposed by the process that should be as ch

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Selvakumar, S. "Organo functionalized mesoporous materials: synthesis, characterization and catalytic application for fine chemical synthesis." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2010. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3717.

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Jha, R. K. "Synthesis and characterization of mesoporous materials and their applications in fine chemical synthesis." Thesis(M.Sc.), CSIR-National Chemical Laboratory, Pune, 2005. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2350.

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Scott, Angelique J. "Source apportionment and chemical characterisation of airborne fine particulate matter in Christchurch, New Zealand." Thesis, University of Canterbury. Environmental Science, 2005. http://hdl.handle.net/10092/7576.

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Environment Canterbury has a proposed plan to address elevated wintertime particle concentrations in Christchurch and other Canterbury towns. The proposed plan sets out air quality objectives for Canterbury and specifically targets the main source of wintertime particles, residential heating. Environment Canterbury is reliant on the plan strategies to meet the targets specified, and to meet the recently established National Environmental Standard for PM₁₀. The contribution of residential heating, relative to other sources, has been quantified by emission inventory (coupled with a box model). T

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Björk, Elisabeth. "Production and application of fine fractions made of chemical pulp for enhanced paperboard strength." Licentiate thesis, Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40246.

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For all kinds of paperboard packages, the bending stiffness of the paperboard is a crucial property. In multi-ply folding boxboard (FBB) grades, this is obtained by placing different stocks in the outer and centre plies of the board. In the outer plies, a stock with a high tensile stiffness is used, typically made from refined kraft pulp fibres. In the middle ply/plies a stock with more bulky properties is placed, typically comprising of a high proportion of CTMP (chemi-thermomechanical pulp). CTMP fibres are stiffer and more inflexible with poor bonding abilities resulting in low strength pro

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Crilley, Leigh R. "Investigations of the physical and chemical properties of ambient fine particles in urban schools." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/65336/1/Leigh_Crilley_Thesis.pdf.

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This thesis reports a comprehensive study on the physical and chemical properties of airborne particles in Brisbane, especially around schools. The sources and potential toxicity of the particles were identified, enabling an assessment of the contributing factors to children's exposure at school. The results from this thesis give a quantitative estimate of the range of airborne particles that children are exposed to at urban schools with different traffic conditions.

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Mabote, Seipati. "Development of a wet fine screen model integrating the effect of operating and design variables on screening performance." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20419.

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Mineral processing is the process that involves liberation and beneficiation of valuable constituents of an ore. Several physical beneficiation processes exist and one such process is classification. Screens are classification devices sometimes used in the classification stage of closed grinding circuits to separate mill product into different size classes. Poor classification of particles results in reduced throughput, high power consumption and over - grinding. Most of the research on screening has been done in scalping applications or classification at relatively large cut sizes. There is l

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Little, Lucy. "The development and demonstration of a practical methodology for fine particle shape characterisation in minerals processing." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/22741.

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Due to continually declining ore grades, increasing mineralogical complexity, and increasing metal demand, models for the design and optimisation of minerals processing operations are of critical importance. These models do not currently incorporate particle shape, which, although rarely quantified, is known to affect numerous unit operations. Automated Scanning Electron Microscopy (Auto-SEM-EDS) is a widely used tool for mineralogical analysis. It also provides an opportunity for simple, quantitative and mineral-specific shape characterisation. Existing mineralogical databases could therefore

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Muketekelwa, Saliya L. "Investigating the potential of using hydrocyclone-fine screen hybrid systems to improve the performance of classification circuits." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27538.

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Classification is an integral part of comminution operations that controls the performance of the circuit. Hydrocyclones are normally used to perform the classification function. They offer numerous advantages that include, the ability to handle high throughputs, low floor space occupation and relatively low capital and running costs. Despite these advantages, hydrocyclones are inherently inefficient classifiers as they are predominantly dependent on hydrodynamics to effect separation. This effect is more prominent in operations handling complex ores such as a dual-density ore, where the heavy

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Groen, Heidi. "On-line monitoring and control of supersaturation in batch crystallisers for organic fine chemical products using ATR FTIR spectroscopy." Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/1180.

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Aristizabal, Felipe. "Modelling of the generation of ultra fine aluminum particles from the quench of superheated vapour in turbulent flow by Felipe Aristizabal." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33954.

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This work reports on a Low Reynolds Number (LRN) turbulent model to simulate such systems for the production of pure metal powders. Aluminium has been chosen as an example.<br>The fluid flow in the turbulent regime was simulated using the LRN model by Jones and Launder (1973); while the dynamic behaviour of the particulate system was modeled in terms of the leading moments of the particle size distribution. The shape of the aerosol size distribution was approximated by a unimodal lognormal function.<br>The set of governing equations were solved numerically using the Finite Volume formulation,

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Swaraj, Sufal. "Surface chemical characterization of plasma-chemically deposited polymer films by X-ray photoelectron spectroscopy and near edge X-ray absorption fine structure." [S.l.] : [s.n.], 2005. http://www.diss.fu-berlin.de/2005/273/index.html.

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Halan, Babu [Verfasser]. "Biofilms as living catalysts for fine chemical synthesis: analysis, process design and scale-up / Babu Halan." Aachen : Shaker, 2013. http://d-nb.info/1051574633/34.

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Koopmeiners, Julia Verfasser], and Anett [Akademischer Betreuer] [Schallmey. "Characterization of novel halohydrin dehalogenases for application in fine chemical synthesis / Julia Koopmeiners ; Betreuer: Anett Schallmey." Braunschweig : Technische Universität Braunschweig, 2017. http://d-nb.info/1175816906/34.

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Gill, Christopher Stephen. "Novel hybrid organic/inorganic single-sited catalysts and supports for fine chemical and pharmaceutical intermediate synthesis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28218.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Jones, Christopher; Committee Member: Agrawal, Pradeep; Committee Member: Teja, Amyn; Committee Member: Weck, Marcus; Committee Member: Zhang, John.

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Gander, Nathan. "Assessing Particulate and Chemical Emissions from Additive Manufacturing Processes." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595848332301779.

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Pederzoli, Anna. "The application of an Eulerian chemical and transport model (CMAQ) at fine scale resolution to the UK." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3127.

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Present-day numerical air quality models are considered essential tools for predicting future air pollutant concentrations and depositions, contributing to the development of new effective strategies for the control and the reduction of pollutant emissions. They simulate concentrations and depositions of pollutants on a wide range of scales (global, national, urban scale) and they are used for identifying critical areas, integrating measurements and achieving a deeper scientific understanding of the physical and chemical processes involving air pollutants in the atmosphere. The use of comprehe

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Grover, Brett D. "Measurement, characterization, and source apportionment of the major chemical components of fine particulate material, including semi-volatile species /." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1174.pdf.

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Marchand, Jérémy. "Combining NMR and MS fingerprinting for fine characterization of lipid profiles. : Application to a chemical food safety issue." Thesis, Nantes, Ecole nationale vétérinaire, 2018. http://www.theses.fr/2018ONIR120F/document.

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Pour garantir au consommateur des aliments sûrs, l'emploi d'anabolisants chez les animaux de production est prohibée au sein de l'Union Européenne depuis la fin des années 1980. Bien que performantes, les méthodes de contrôle classiques ciblées font face à de nouveaux défis auxquels des stratégies alternatives (non ciblées),visant à identifier des biomarqueurs métaboliques caractéristiques de l'effet associé à ces pratiques, offrent des solutions innovantes. Le lipidome en particulier constitue une fraction d'intérêt pour l'étude des effets liés aux agents de répartition. La Spectrométrie de M

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Grover, Brett D. "Measurement, Characterization, and Source Apportionment of the Major Chemical Components of Fine Particulate Material, Including Semi-Volatile Species." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/359.

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The promulgation of revised standards for atmospheric fine particles (PM2.5) by the US EPA has sparked renewed interest in the ability to accurately measure and characterize suspended atmospheric particulate matter. Semi-volatile material (SVM), consisting of ammonium nitrate and semi-volatile organic material (SVOM), is not accurately measured by EPA accepted methods such as the Federal reference method (FRM) or Tapered Element Oscillating Microbalance (TEOM). However, SVM is often a major fraction of urban aerosols. Recent advances in atmospheric sampling instrumentation allowed for the semi

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Yang, Yang. "A study of fine particle grinding in vertically stirred media mills via positron emission particle tracking technology and the discrete element method." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8162/.

Texte intégral

Résumé :

This study provides a comprehensive understanding of the fine particle grinding process in stirred media mills. Calcium carbonate was chosen as the feed material. The experiments were firstly conducted in a laboratory scale vertically stirred media mill under various grinding conditions. The operating variables including specific energy, rotational speed, solids concentration, grinding media type, chemical additives (dispersant) were investigated. Then, the process was scaled up to a pilot scale mill. The performance of the pilot scale mill was compared to the laboratory scale mill regarding t

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