Dissertations / Theses on the topic 'Liquid aerosols'
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Knox, Christopher James Henry. "The photochemistry of liquid aerosols." Thesis, University of Canterbury. Chemistry, 2002. http://hdl.handle.net/10092/6076.
Full textMa, Yilin. "Developments and improvements to the particle-into-liquid-sampler (PILS) and its applications to Asian outflow studies." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131244/unrestricted/ma%5Fyilin%5F200405%5Fphd.pdf.
Full textPerkins, Deborah Davidson. "Characterization and applications of the monodisperse aerosol generation interface for combining liquid chromatography with mass spectometry." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/27610.
Full textFoss, Willard Rodney. "Dynamic processes in single liquid microspheres /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/9911.
Full textMullins, Benjamin James, and n/a. "Study of Capture, Fibre Wetting and Flow Processes in Wet Filtration and Liquid Aerosol Filtration." Griffith University. School of Environmental Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040919.124658.
Full textMullins, Benjamin James. "Study of Capture, Fibre Wetting and Flow Processes in Wet Filtration and Liquid Aerosol Filtration." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/365591.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental Engineering
Faculty of Environmental Sciences
Full Text
Martin, Graham S. "Theoretical and experimental studies of an aerosol coalescing fibrous filter." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265545.
Full textCorsetti, Stella. "Optical and spectroscopic analysis of phase transitions in the bulk and aerosols of liquid hydrocarbon fuels and their ethanol blends." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230611.
Full textAgranovski, Igor Evgenevich, and n/a. "Filtration of Ultra-Small Particles on Fibrous Filters." Griffith University. School of Environmental Engineering, 1995. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050913.164528.
Full textAgranovski, Igor Evgenevich. "Filtration of Ultra-Small Particles on Fibrous Filters." Thesis, Griffith University, 1995. http://hdl.handle.net/10072/367392.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental Engineering
Faculty of Environmental Sciences
Full Text
Chakrabarty, Chitra L. "Figures of merit for a direct injection nebulizer for flow injection analysis and liquid chromatography with inductively coupled plasma spectrometric detection." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/722785.
Full textDepartment of Chemistry
Freire, Sandra Maria Semedo Carvalho. "Characterization of water-soluble organic matter from urban aerosols." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13111.
Full textWater-soluble organic matter (WSOM) from atmospheric particles comprises a complex array of molecular structures that play an important role on the physic-chemical properties of atmospheric particles and, therefore, are linked to several global-relevant atmospheric processes which impact the climate and public health. Due to the large variety of sources and formation processes, adequate knowledge on WSOM composition and its effects on the properties of atmospheric aerosol are still limited. Therefore, this thesis aims at providing new insights on the molecular composition of WSOM from fine atmospheric aerosols typical of an urban area (Aveiro, Portugal). In a first step, adsorption phenomena of semivolatile organic compounds on quartz fibre filters employed in the collection of atmospheric aerosols were assessed. Afterwards, atmospheric aerosol samples were collected during fifteen months, on a weekly basis. A mass balance of aerosol samples was performed in order to set the relative contribution of elemental carbon, WSOM and water-insoluble organic matter to the aerosol mass collected at the urban area of Aveiro, with a special focus on the assessment of the influence of different meteorological conditions. In order to assess the chemical complexity of the WSOM from urban aerosols, their structural characteristics were studied by means of Fourier transform infrared infrared - Attenuated Total Reflectance (FTIR-ATR) and solid-state cross polarization with magic angle spinning 13C nuclear magnetic resonance (CPMAS 13C NMR) spectroscopies, as well as their elemental composition. The structural characterization of aerosol WSOM samples collected in the urban area highlighted a highly complex mixture of functional groups. It was concluded that aliphatic and aromatic structures, hydroxyl groups and carboxyl groups are characteristic to all samples. The semi-quantitative assessment of the CPMAS 13C NMR data showed different distributions of the various functional groups between the aerosol samples collected at different seasons. Moreover, the presence of signals typical of lignin-derived structures in both CPMAS 13C NMR and FTIR-ATR spectra of the WSOM samples from the colder seasons, highlights the major contribution of biomass burning processes in domestic fireplaces, during low temperature conditions, into the bulk chemical properties of WSOM from urban aerosols. A comprehensive two-dimensional liquid chromatography (LC x LC) method, on-line coupled to a diode array, fluorescence, and evaporative light scattering detectors, was employed for resolving the chemical heterogeneity of the aerosol WSOM samples and, simultaneously, to map the hydrophobicity versus the molecular weight distribution of the samples. The LC x LC method employed a mixed-mode hydrophilic interaction column operating under aqueous reversed phase mode in the first dimension, and a size-exclusion column in the second dimension, which was found to be useful for separating the aerosol WSOM samples into various fractions with distinct molecular weight and hydrophobic features. The estimative of the average molecular weight (Mw) distribution of the urban aerosol WSOM samples ranged from 48 to 942 Da and from 45 to 1241 Da in terms of UV absorption and fluorescence detection, respectively. Findings suggest that smaller Mw group fractions seem to be related to a more hydrophobic nature.
A matéria orgânica solúvel em água (MOSA) de aerossóis atmosféricos é composta por um conjunto complexo de estruturas moleculares que influenciam as propriedades físico-químicas das partículas atmosféricas e, por conseguinte, desempenham um importante papel em diversos processos atmosféricos globalmente relevantes, afectando o clima e a saúde pública. Devido a uma ampla variedade de fontes e processos de formação, é ainda escasso o conhecimento acerca da composição estrutural da MOSA e do respectivo efeito nas propriedades dos aerossóis atmosféricos. Assim, esta tese pretende fornecer novas perspetivas sobre a composição molecular da MOSA presente na fracção fina de partículas atmosféricas características de uma área urbana (Aveiro, Portugal). Para o efeito, numa primeira fase do trabalho, foi avaliada a ocorrência de eventuais fenómenos de adsorção de compostos orgânicos semi-voláteis nos filtros de fibra de quartzo utilizados na colheita das amostras de partículas atmosféricas. Posteriormente, e na mesma área urbana, foi efectuada a colheita de amostras de aerossóis atmosféricos, durante um período de 15 meses, numa base de amostragem semanal e em contínuo. Foram efectuados balanços mássicos que permitiram descrever a importância das fracções de carbono elementar, MOSA e matéria orgânica insolúvel em água, na massa total de aerossóis atmosféricos recolhidos na zona urbana de Aveiro, tendo-se dado especial relevo ao estudo dos efeitos de diferentes condições meteorológicas. Na tentativa de entender a complexidade da MOSA de aerossóis urbanos, foram efectuados estudos de caracterização estrutural com recurso às espectroscopias de infravermelho com transformadas de Fourier (FTIR) acoplada a um sistema de reflectância total atenuada (ATR, sigla inglesa de Attenuated Total Reflectance) (FTIR-ATR) e de ressonância magnética nuclear de 13C com polarização cruzada (CP, sigla inglesa de Cross Polarization) e rotação em torno do ângulo mágico (MAS, sigla inglesa de Magic Angle Spinning) (RMN CPMAS de 13C) de estado sólido, mas também através da avaliação da respectiva composição elementar. A caracterização estrutural da MOSA dos aerossóis recolhidos na zona urbana confirmou o carácter heterogéneo deste tipo de matéria orgânica, traduzido por uma multiplicidade de grupos funcionais. De um modo geral, foi possível concluir que as estruturas alifáticas, as estruturas aromáticas, os grupos hidroxilo e os grupos carboxilo constituem funcionalidades comuns às amostras estudadas. A avaliação semi-quantitativa dos dados de RMN CPMAS de 13C mostrou igualmente diferentes distribuições dos diversos grupos funcionais, entre as amostras de aerossóis colhidos em diferentes períodos sazonais. A presença de sinais típicos de estruturas derivadas de lignina nos espectros de RMN CPMAS de 13C e FTIR-ATR das amostras de MOSA típicas de estações sazonais mais frias sugere que as propriedades de MOSA de partículas atmosféricas são influenciadas pelos processos de queima da madeira para aquecimento doméstico. Complementarmente às técnicas espectroscópicas anteriormente referidas, foi também utilizada a técnica de cromatografia líquida bidimensional abrangente (LC x LC) acoplada aos detectors de fotodíodos, fluorescência e evaporativo com dispersão de luz, com o objectivo de resolver a heterogeneidade das amostras de MOSA e, simultaneamente, mapear a hidrofobicidade versus distribuição de tamanhos moleculares das amostras. A utilização de uma coluna de cromatografia de interacção hidrofílica operada sob condições de fase reversa na primeira dimensão e de uma coluna de cromatografia de exclusão por tamanhos na segunda dimensão, revelou-se muito útil para a separação das amostras de MOSA em frações com hidrofobicidades e tamanhos moleculares distintos. A distribuição de massa molar média (Mw) obtida neste estudo variou entre 48 e 942 Da e 45 a 1241 Da, em termos de detecção por UV e fluorescência, respectivamente. Os resultados obtidos sugerem ainda que as fracções com menor valor de Mw tendem a ter um carácter relativamente mais hidrofóbico.
Secondo, Lynn E. "Toxicological Inhalation Effects of Metal-Based Nanoparticle Aerosols as Studied by a Portable In Vitro Exposure Cassette." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5705.
Full textBerkemeier, Thomas [Verfasser]. "Multiphase kinetics of molecular diffusion, phase transitions and chemical reactions in liquid, semi-solid and glassy organic aerosols / Thomas Berkemeier." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/110977527X/34.
Full textAvery, Thomas W. "Further characterization of the direct injection nebulizer for flow injection analysis and liquid chromatography with inductively coupled plasma spectrometric detection." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/539620.
Full textDepartment of Chemistry
Olanrewaju, Babajide O. "Non-thermal processes on ice and liquid micro-jet surfaces." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39475.
Full textBones, David Lawrence. "Liquid Aerosol Photochemistry." Thesis, University of Canterbury. Chemistry, 2008. http://hdl.handle.net/10092/1500.
Full textButler, Jason Richard. "Optical control and characterisation of liquid aerosol." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509503.
Full textScurrah, Katherine Lesley. "Filtration of solid and liquid aerosol particles." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/32098.
Full textMelton, Patricia Mary. "The characterisation of liquid atomisation systems." Thesis, University of Essex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235599.
Full textPapavassiliou, John. "Measurements of cellular structure in liquid aerosol detonation." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60571.
Full textOudrhiri, Benaaddach Khalid. "Contribution a l'etude de la diffusion d'un contaminant passif dans un ecoulement turbulent." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13142.
Full textGilbertson, Sarah Elizabeth. "Aerosol Gel production via controlled detonation of liquid precursors." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1101.
Full textMead-Hunter, Ryan. "Modelling micro-scale coalescence and transportprocesses in liquid aerosol filtration." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/1063.
Full textGorkowski, Kyle J. "The Morphology and Equilibration of Levitated Secondary Organic Particles Under Controlled Conditions." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/1067.
Full textLorber, Nicholas William. "Optimization studies of a monodisperse aerosol generation interface for combining liquid chromatography with mass spectroscopy." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/30010.
Full textSutter, Benjamin. "Étude de l'évaporation d'aérosols liquides semi-volatils collectés sur médias fibreux." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL067N/document.
Full textThis study falls within the scope of improving knowledge concerning evaporation of semi-volatile liquid aerosols collected on fibrous filters. Under these conditions, the aerosol evaporation phenomenon causes problems of safety, in particular over-exposure of employees to vapours downstream of general air filtering systems. Furthermore, when controlling aerosol atmospheric concentrations, evaporation results in under-estimation of the sampled aerosol particle phase and this is clearly problematic in exposure prevention terms. The aim of this work was therefore to record a large number of experimental data, both to make up for their scarcity in the literature and to improve previously developed theoretical models. Two experimental approaches were implemented to identify the evaporation process for a collected aerosol. The first, termed the global approach, allowed us to monitor aerosol evaporation by measuring vapour quantity downstream of the filter with respect to time. The second, microscopic, approach considers evaporation of droplets collected on the filter fibres on a microscopic scale. The two approaches implemented during this research lead to agreement on the fact that evaporation of a liquid semi-volatile aerosol cannot be satisfactorily represented by the theoretical models proposed in the literature. Hypotheses are advanced to explain the divergence in evaporation kinetics between theoretical and experimental work
Roshi, Aleksander. "Quenched Random Disorder Studies In Liquid Crystal + Aerosil Dispersions." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-042705-123130/.
Full textKeywords: smectic-A to smectic-C; nematic to smectic-A; isotropic-nematic; phase transition; quenched random disorder; liquid crystal; gel structure; turbidity; gel dynamics; x-ray intensity fluctuation spectroscopy ( XIFS ); ac-calorimetry; x-ray diffraction Includes bibliographical references (p. 210-218).
Cruceanu, Florentin I. "AC-calorimetry and dielectric spectroscopy on anisotropic liquid crystal and aerosil dispersions." Worcester, Mass. : Worcester Polytechnic Institute, 2008. http://www.wpi.edu/Pubs/ETD/Available/etd-040908-143149/.
Full textKeywords: phase transitions; quenched random disorder; liquid crystals; dielectric spectroscopy; calorimetry. Includes bibliographical references (leaves 78-83).
Dearden, Christopher. "Exploring the effects of microphysical complexity in numerical simulations of liquid and mixed-phase clouds." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/exploring-the-effects-of-microphysical-complexity-in-numerical-simulations-of-liquid-and-mixedphase-clouds(abe4b249-a608-4a42-819c-962e2114d1ba).html.
Full textGeryes, Tony. "Étude expériementale et numérique de la dégradation de la mesure nucléaire d'aérosols radioactifs prélevés avec des filtres de surveillance." Thesis, Paris Est, 2009. http://www.theses.fr/2009PEST0050.
Full textThe measurement of radioactivity in the filters of airborne radioactive surveillance is a major difficulty metrology. Indeed, the absorption of a radiation in the filter media and the mass of aerosols accumulated distort the nuclear counters response. This thesis work focuses on the determination of correction factors for the radioactivity loss in the survey filters. In a first step, radioactive filters representing the atmospheric samples have been prepared using the nuclear test bench ICARE. The experimental study on reference filters provided a database to determine correction factors for various filtration conditions. The second step of the work proposed a new numerical method developed to determine the correction factors. It consists of coupling GeoDict for particles filtration simulations and MCNPX simulations for a transport in matter. The good agreement obtained by comparing the numerical and experimental correction factors has permitted to validate the numerical model
Vishal, Pandya. "Deuteron Nuclear Magnetic Resonance Studies of Orientational Order of Exotic Liquid Crystals." Kent State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=kent1185221760.
Full textVerrill, Christopher Lee. "Inorganic aerosol formation during black liquor drop combustion." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/5793.
Full textReinhardt, Alwin [Verfasser]. "A Millimeter Wave Radar Sensor for Monitoring Solid and Liquid Aerosol Streams / Alwin Reinhardt." Düren : Shaker, 2019. http://d-nb.info/1202218806/34.
Full textJadon, Ankita. "Interactions between sodium carbonate aerosols and iodine fission-products." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1R021/document.
Full textThe safety analysis of Generation IV sodium-cooled fast neutron reactors requires the study of the consequences of a severe accident in case of release into the environment of sodium and the radionuclides it carries (term chemical and radiological source). The global source term therefore depends on both the chemical speciation of sodium aerosols, resulting from the combustion of sodium in the containment, and their interactions with radionuclides. During this thesis, the interactions between sodium carbonate and iodinated gaseous fission products (I2 and HI) were studied at the atomic and macroscopic scales, via a combined theoretical and experimental approach. An analytical expression of the adsorption isotherm has been developed. The relative stability of the sodium carbonate surfaces was determined by ab initio calculations using density functional theory. The reactivity of iodine has been studied for the most stable surfaces and the adsorption isotherms evaluated. In parallel, the kinetics of capture of molecular iodine by sodium carbonate has been determined experimentally for different boundary conditions.The results show an effective capture of the molecular iodine by sodium carbonate at 373 K, varying according to the partial pressure of iodine and the surface of the carbonate sorbent. For the representative conditions of a severe accident, the adsorption sites of the most favorable sodium carbonate surfaces will be mostly bare or doubly occupied depending on the partial pressure of molecular iodine; leading to an equilibrium pressure of less than 2x10-4 bar at 373 K
Moghaddam, Amir. "Dynamics of transformation and fragmentation of composite liquid nano-particles." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/31776/1/Amir_Moghaddam_Thesis.pdf.
Full textPackwood, Daniel Miles. "Theoretical and Experimental Studies of the Gas-Liquid Interface." Thesis, University of Canterbury. Department of Chemistry, 2010. http://hdl.handle.net/10092/4618.
Full textRenard, Pascal. "Photochimie et oligomérisation des composés organiques biogéniques en phase aqueuse atmosphérique." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4748.
Full textAir pollution caused by secondary organic aerosol (SOA) is one of the major challenges of this century. We focus this thesis on SOA , through an innovative approach, i.e. multiphase photochemistry.The photochemical reactor allows to simulate in laboratory, the atmospheric aqueous phase oxidation of biogenic volatile organic compounds (BVOC) and in particular, methyl vinyl ketone (MVK), and thus, to study SOA.We study the reactivity of MVK in the presence of ●OH and its ability to oligomerize under various initial concentrations of oxygen, MVK and ●OH. A wide analytical strategy based on liquid chromatography-mass spectrometry is used to identify the reaction products, and establish a chemical mechanism. We focus on these oligomers systems, formation, yield and aging. Collected data are used as inputs to a multiphase box model to explore the sensitivity of oligomerization to the variations of physical and chemical atmospheric parameters. The photochemistry of pyruvic acid generates radical chemistry and initiates MVK oligomerization. We closely compare this reaction to MVK ●OH oxidation. Then, we measure the surface activity of both systems. The ability of oligomers to partition to the interface could affect the climate. Finally, we used ion mobility - mass spectrometry to observe ●OH co-oligomerization of a mixture of organic compounds most representative of the atmosphere.Atmospheric oligomerization implies (i) a minimal concentration of precursors that could be reached in wet aerosol via the co-oligomerization; (ii) a reactivity in competition with the addition of the dissolved oxygen, whose the atmospheric relevance remains to be explored
Penicot-Bauge, Pascale. "Étude de la performance de filtres à fibres lors de la filtration d'aérosols liquides ou solides submicroniques." Vandoeuvre-les-Nancy, INPL, 1998. http://docnum.univ-lorraine.fr/public/INPL_T_1998_PENICOT_BAUGE_P.pdf.
Full textLarsson, Philip. "Tryckfall och avskiljningsgrader av aerosola oljepartiklar i platt- och veckat material : Experimentella mätningar och modellering." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85590.
Full textIndustrial processes generate emissions in the form of, among other things, air pollution via the process air, which in turn degrades the working environment for industrial employees. According to the Work Environment Act, the employer is obliged to protect the health of the employees via a good work environment and must therefore clean the process air. Air pollutants consist of aerosols and are defined as a collection of solid or liquid particles floating in a gas. The report dealt with aerosols in the form of oil particles generated from sources such as industrial processes such as molding, grinding and heat treatment. Such a process can release six barrels of oil into the air per year and without particle separation, the processes' oil and energy consumption increases markedly. Separation of aerosol oil particles collects the oil so that it can be reused and reduces exposure that can cause cancer and Hodgkin's disease. Aerosol oil should therefore be separated from the process air due to health aspects. Oil particles are separated from the process air via porous materials. The material is connected to the process with tailor-made duct systems where the process air is ventilated away with negative pressure via a fan motor. Oil particles are separated in the porous material and thus the degree of saturation of the material increases, that is accumulated oil reduces the porosity of the material. The drainage capacity of the material ensures that the degree of saturation is limited and that the oil can be reused. An efficient material has a low pressure drop and a high separation rate. These vary with the structure of the material such as fiber diameter, the thickness of the fiber carpet and the number of folds of the material. A material is folded to increase the material area and its separation rate, but the pressure drop is also increased, therefore a balance between pressure drop and separation rate is important when designing the material. A non-pleated material is referred to as flat material in the report. Evaluation of pressure drop and separation rate in a pleated material is costly both financially and in terms of time, while flat materials are effective from both aspects and are therefore a better alternative regarding evaluation. The purpose of the thesis was to increase knowledge about the separation of aerosol oil particles in porous materials. The goal was to model pleated materials based on experimental tests of flat and pleated materials. In the report, porous materials with different fiber diameters were tested experimentally as both flat and pleated materials. Experimental tests meant that the materials were tested practically for pressure drops and separation rate. Separation rate was measured at three ranges of particle diameters according to 0.25–0.60 μm, 0.931–1.075 μm and 1.911–2.207 μm. Flat materials were tested at four air velocities to illustrate the increase in air velocity within pleated material due to an increasing degree of saturation. Modeling meant that a calculation model for pleated material was built and input data was given based on experimental tests of plate and pleated materials. Regression analyzes were performed on the measurement results from flat materials and gave mathematical functions that were used in modeling of pleated materials. The number of folds and degrees of saturation were modeled based on experimental results from pleated materials. Measurement and modeling results varied with the structure of the material. As a result, pressure drops, separation rate and degree of saturation increased with decreasing fiber diameter and increasing carpet thickness for both flat and pleated materials. Modeling of pressure drop in pleated material deviated from praxis by -30% and -6% for fiber diameters of 8 μm and 6μm, respectively. Modeling of separation rates in pleated material had the largest deviation of + 30% for particle diameter 0.25–0.60 μm in material with fiber diameter 6 μm. Modeling results of pleated material varied across the structure of the material and thus deviated differently from praxis. Deviations in modeled pressure drop and separation rates in pleated materials were due to the dynamic pressure of the air. The pressure on the oil particles affected drainage capacity and oil distribution within the material. The oil distribution is thus heterogeneous in praxis, which affects pressure drop and separation rate in both praxis and modeling. This created uncertainties and made modeling less reliable. Therefore, pressure drop and separation rate could not be modeled in pleated material based solely on flat materials. Improved modeling further requires studies regarding oil distribution within the material as well as the impact of the dynamic pressure of the air flow on drainage capacity to improve modeling of pleated materials.
Cahoon, Erica M. "The Discrimination and Association of Float Glass and The Quantitative Analysis of Liquids from Aerosols and Microdrops using Laser Induced Breakdown Spectroscopy." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/621.
Full textHufnagel, Matthias Wilhelm [Verfasser], and A. [Akademischer Betreuer] Hartwig. "Untersuchungen zur Toxizität von nanopartikelhaltigen Aerosolen nach Exposition über ein air-liquid interface / Matthias Wilhelm Hufnagel ; Betreuer: A. Hartwig." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1177147092/34.
Full textHufnagel, Matthias [Verfasser], and A. [Akademischer Betreuer] Hartwig. "Untersuchungen zur Toxizität von nanopartikelhaltigen Aerosolen nach Exposition über ein air-liquid interface / Matthias Wilhelm Hufnagel ; Betreuer: A. Hartwig." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1177147092/34.
Full textAndersen, Hendrik [Verfasser], Jan [Gutachter] Čermák, and Jörg [Gutachter] Bendix. "A quantitative, satellite-based analysis of aerosol effects on liquid-water clouds / Hendrik Andersen ; Gutachter: Jan Cermak, Jörg Bendix ; Fakultät für Geowissenschaften." Bochum : Ruhr-Universität Bochum, 2017. http://d-nb.info/1148752005/34.
Full textSchilling, Klaus Jussi [Verfasser], Ulrike [Gutachter] Holzgrabe, and Oliver [Gutachter] Scherf-Clavel. "Liquid chromatographic analysis of weakly- and non-chromophore compounds focusing on Charged Aerosol Detection / Klaus Jussi Schilling ; Gutachter: Ulrike Holzgrabe, Oliver Scherf-Clavel." Würzburg : Universität Würzburg, 2020. http://d-nb.info/1207761060/34.
Full textDear, Richard D. "Structures and dynamics of optically confined matter." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:cc0e70f6-b22e-4fa1-a074-131d489f73c1.
Full textRubasinghege, Gayan Randika S. "Chemical and photochemical reactions on mineral oxide surfaces in gaseous and liquid phases: environmental implications of fate, transport and climatic impacts of mineral dust aerosol." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1173.
Full textDufour, Alizée. "Caractérisation des tensioactifs polydisperses industriels par spectrométrie de masse et chromatographie en phase liquide." Thesis, Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLS019.
Full textIIn the petroleum industry, surfactant formulation is becoming more and more complex, especially in thecase of Enhanced Oil Recovery. Analytical challenges therefore appear when monitoring these surfactants.After a detailed characterisation using high resolution mass spectrometry (HRMS), a preliminary studyallowed a better understanding of the chomatographic behaviours of surfactants on different stationnaryphases. A screening of nine different columns showed that LC-1D separation did not result in a completeseparation due to the range of polarities and the polydispersity of the compounds. However, thedevelopment of a multi-dimensional approach solved the co-eluting observed in LC-1D. Following this proofof concept, the determination of the response factor, using charged aerosol detection, underlined the lackof a uniform response within a distribution. This has a strong impact on the mass balance. Finally, theinfluence of the presence of oil was demonstrated by studying a mixture of anionic and nonionic surfactantsin oil matrix. The separation was maintained but the presence of organic solvent and crude oil has a crucialimpact on the signal
Greenan, Rebecca. "Optimization of the VITROCELL® Exposure System for In Vitro Toxicity Testing of Diesel Emissions at the Air-Liquid Interface." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32254.
Full textCalec, Nevenick. "Dépôt sec des aérosols submicroniques sur une surface liquide en mouvement." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4770/document.
Full textWhether by chronic or accidental releases, the impact of a nuclear installation on the environment mainly depends on atmospheric transfers; and as the accidents at Chernobyl and Fukushima show, affect the contamination of surfaces and impacts on the environment and the population. This work focuses on the characterization and modeling of dry deposition of submicronic aerosols on liquid surfaces in motion such as rivers. The evaluation of dry deposition is based on the estimation of flux modeling as the product of particle concentration and deposition velocity. Due to the lack of data on the dry deposition of submicronic aerosols on a liquid surface in motion, the approach was based on two axes: 1) the acquisition of experimental deposition velocities and 2) the analysis and interpretation of results through modeling. The experiments were performed with uranine aerosols released into the IOA-IRPHE wind tunnel. These experiments have given many dry deposition velocities for different configurations characterized according to wind, current, ambient temperature and relative humidity, the liquid surface deformations (measured significant wave height) and size distribution of aerosols released. The modeling part was to adapt the model to resistance. Slinn and Slinn (1980). The main adjustments made by this work have been to take specific account of the different classes of particle size distribution, the spectrum variation as a function of hygroscopicity, and mechanisms of aggregation. It is integrated mechanisms of diffusiophoresis and thermophoresis, respectively produced by the evaporation of water and the temperature gradient at the air-water interface