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Dissertations / Theses on the topic 'Mass balance and energy'

Author: Grafiati
Published: 4 September 2021
Last updated: 29 July 2025

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1

Ranasinghe, Milinda A. "Modelling the mass and energy balance in a compost biofilter." Thesis, University of Canterbury. Chemical and Process Engineering, 2003. http://hdl.handle.net/10092/7492.

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A biofilter model was developed using the mass and energy balances in the gas, liquid and solid phases, which related the biofilter performance to the water content in the packing material. A key simplification of the model was that the concentration gradients in the biofilm were neglected by treating the biofilm/water layer as well mixed and in instantaneous equilibrium with the gas phase. Thus, the biofilm geometry and density parameters were lumped into the overall degradation term. The solid phase was treated as a separate well-mixed layer but solid phase dynamics were accounted for by usi
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2

Fang, Yuan-Hao, Xingnan Zhang, Chiara Corbari, Marco Mancini, Guo-Yue Niu, and Wenzhi Zeng. "Improving the Xin'anjiang hydrological model based on mass–energy balance." COPERNICUS GESELLSCHAFT MBH, 2017. http://hdl.handle.net/10150/625180.

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Conceptual hydrological models are preferable for real-time flood forecasting, among which the Xin'anjiang (XAJ) model has been widely applied in humid and semi-humid regions of China. Although the relatively simple mass balance scheme ensures a good performance of runoff simulation during flood events, the model still has some defects. Previous studies have confirmed the importance of evapotranspiration (ET) and soil moisture content (SMC) in runoff simulation. In order to add more constraints to the original XAJ model, an energy balance scheme suitable for the XAJ model was developed and cou
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3

Migliavacca, Alencar. "Balanço de massa, energia e exergia na produção intensiva de frangos de corte." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-06122017-090731/.

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A produção brasileira de frangos de corte evidenciou-se com o sistema de produção integrada, ao elevar a eficiência e a qualidade na conversão de proteína animal. Contudo, devido à rápida evolução tecnológica com crescente demanda energética e a diversificação dos sistemas de produção em diferentes microclimas, elucidar os processos de conversão de massa e energia tornou-se uma tarefa desafiadora neste sistema de produção. Constantemente, pesquisadores, produtores e agroindústria buscam processos mais rentáveis, reduzindo a demanda em mão de obra e o impacto ambiental. No entanto, nunca foi fe
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4

Huintjes, Eva [Verfasser]. "Energy and mass balance modelling for glaciers on the Tibetan Plateau : extension, validation and application of a coupled snow and energy balance model / Eva Huintjes." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1065848064/34.

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5

Nilsson, Simon. "Influence of fuel mix on mass balance of Cl, S, and K in a long rotary kiln." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160532.

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Lime is a material with a wide range of applications including land improvement, water treatment as well as the paper-, steel-, and cement industry. Annual worldwide production was estimated at 350 Mt/year for 2016 and 2017 and the production is responsible for a large contribution of the greenhouse gas CO2 to the atmosphere, contributing to global warming. Since there is a need for high temperatures in the production process it is common that fossil fuels are used due to their high energy density and favourable combustion characteristics. Therefore a net emission of CO2 comes from the fuel, b
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6

Eriksson, Pia. "Meteorological differences between Rabots glaciär and Storglaciären and its impact on ablation." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-121546.

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In the Kebnekaise Massif, Northern Sweden, the west facing glacier, Rabots glaciär, is loosing volume at a significantly higher rate than east facing, Storglaciären. By analyzing data from automatic weather stations situated on the ablation area on the glaciers we investigated the effect of meteorological differences on ablation. There was a difference in micro-climate between Rabots glaciär and Storglaciären. Generally Storglaciären had slightly warmer and drier air, had less or a thinner cloud layer but more precipitation. On both glaciers a glacier wind is dominant but high wind velocities
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7

Brunzell, Lena. "Energy Efficient Textile Drying." Licentiate thesis, Karlstad University, Faculty of Technology and Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-729.

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<p>Traditionally, textiles were dried outdoors with the wind and the sun enhancing the drying process. Tumble dryers offer a fast and convenient way of drying textiles independent of weather conditions. Tumble dryers, however, consume large amounts of electrical energy. Over 4 million tumble dryers are sold each year in Europe and a considerable amount of energy is used for drying of clothes. Increasing energy costs and the awareness about environmental problems related to a large energy use has increased the demand for dryers with better energy efficiency. The aim with this thesis is to show
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8

Uddin, Arth, and Ashkan Hosseini. "Modeling a computational program with mass and energy balances." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146534.

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After the extension of the boiler 6 at Högdalenverket during 2010, there has been some problems in the form of increased carbon monoxide levels. There may be several explanations for this problem, which means that complete combustion doesent take place. There have also been problems with the ash-handling system and the sand returning systemt, this results in higher operating costs because it requires a higher consumption of inert material.The project was first divided into two phases, the first phase was to develop material and energy balances for the boiler but also introduce the parameters t
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9

Clendon, Penelope Catherine. "Summertime surface mass balance and atmospheric processes on the McMurdo Ice Shelf, Antarctica." Thesis, University of Canterbury. Geography, 2009. http://hdl.handle.net/10092/2630.

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The aim of this research was to demonstrate the relationship between variations in summertime surface mass balance of the McMurdo Ice Shelf and atmospheric processes. The approach encompassed a broad range of techniques. An existing energy balance mass balance model was adapted to deal with debris-covered ice surfaces and modified to produce distributed output. Point based surface energy and mass balance for two key surfaces of the ice shelf were linked to different synoptic types that were identified using a manual synoptic classification. The distributed model was initialised with distribute
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10

Sensoy, Aynur. "Physically Based Point Snowmelt Modeling And Its Distribution In Euphrates Basin." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605945/index.pdf.

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Since snowmelt runoff is important in the mountainous parts of the world, substantial efforts have been made to develop snowmelt models with many different levels of complexity to simulate the processes at the ground, within the snow, and at the interface with the atmosphere. The land-atmosphere interactions and processing influencing heat transfer to and from a snowpack are largely variable and the conceptual representation of this temporal and spatial variability is difficult. A physically based, two layer point model, is applied to calculate the energy and mass balance of snowmelt in the
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11

Kamfjord, Nils Eivind. "Mass and Energy Balances of the Silicon Process : - Improved Emission Standards." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-17285.

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12

Fairman, Jonathan George. "Investigating paleoclimatic conditions in the tropical Andes using a 2-D model of glacial mass energy balance and ice flow /." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1211912269.

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13

Fairman, Jonathan George Jr. "Investigating Paleoclimatic Conditions in the Tropical Andes Using A 2-D Model of Glacial Mass Energy Balance and Ice Flow." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211912269.

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14

Réveillet, Marion. "Sensibilité du bilan de masse des glaciers alpins aux variables atmosphériques et topographiques : Observations et simulations." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAU038/document.

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Les glaciers intègrent naturellement des informations hydrologiques et énergétiques dans des régions climatiques variées du globe et sont sensibles à des changements minimes de bilan d’énergie de surface. Parmi les paramètres mesurés in-situ traduisant les variations climatiques, le bilan de masse de surface est la variable directement reliée aux conditions atmosphériques qui contrôlent les processus d’accumulation et d’ablation. Un grand nombre de modèles, de complexités diverses, existent pour simuler l’évolution du bilan de masse. Cependant, des questions perdurent quant à l’utilisation de
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15

Mählkvist, Simon, and Netzell Pontus. "Pulp mill heat and mass balance model : Exploring the benefits and possibilities of process modelling as an applied method in a case study." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41292.

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This thesis focused on the modelling of a pulping process. The purpose was to see if an accurate model can be crated based on relatively simple premises and if the errors can be identified or analysed. To realise this, the authors conducted a literature study to identify the current state of the art regarding the chemical pulping process. In addition, flow charts and sample data from a case study were examined. Based on the literature review and case study, model assumptions were derived. The model is divided into sixteen components. Where mixing occurs, lumped conditions are assumed. The mode
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16

Lundqvist, Per. "Mass and energy balances over the lime kiln in a kraft pulp mill." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-162595.

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This report describes the construction of a model that calculates mass- and energy balances over the lime kiln in a kraft pulp mill. The model was implemented in FORTRAN to serve as the lime kiln block in the WinGEMS simulation software. The mass balance is based on a number of user specified parameters as well as chemical relations found in the literature. A general method to approach the different concentrations and mass flows when constructing a WinGEMS block is also included in the report. In the energy balance the fuel consumption of the lime kiln is calculated. The model is equipped to h
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17

Phuthi, Thabisani Nigel. "Steelmaking with the ESS furnace : a model-based metallurgical analysis." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/75934.

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This research project investigated the option of steelmaking with the ESS furnace by using computational modelling to estimate steady state decarburisation rates. It focused on understanding metallurgical phenomena that would dictate refining rates of molten pig iron with iron ore. The results obtained are aimed at designers and potential users of the furnace technology to improve their understanding of the expected steady-state process behaviour. A mass-and-energy-balance model with a decarburisation sub-model was developed to estimate feed material requirements for steady state operatio
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18

Daou, Fatma. "Etude expérimentale d'un procédé de dépollution par décharge couronne à barrière diélectrique type pointe(s) - plan : rôle de la simulation numérique et du marquage isotopique." Paris 6, 2002. http://www.theses.fr/2002PA066488.

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19

Dudley, J. W. O. "Forward in-situ combustion : Real-time mass and energy balances, reaction kinetics and control." Thesis, University of Bath, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380609.

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Enhanced oil recovery by dry forward in-situ combustion has been studied in a combustion tube. Twelve experiments are reported exploring the effects of three factors: oxygen flow, partial pressure and mole fraction, each factor at two levels. The pressures used went up to 790 kPa, and the oxygen mole fraction to 35%. It was discovered that the oxygen partial pressure had no statistically significant effect. The oil recovery was independent of the factors used. The combustion time was dominated by the oxygen flow, as were the reaction rates, while fuel and oxygen consumption depended mainly on
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20

Copol, Cédrick Nicolas. "Etudes mathématiques et numériques pour la modélisation des systèmes hydrothermaux. Applications à la géothermie haute énergie." Thesis, Antilles, 2016. http://www.theses.fr/2016ANTI0093/document.

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L’objectif de notre étude est de modéliser un réservoir géothermique. Si nous supposons que le réservoir géothermique n’est composé que d’eau pure le transfert de matière et d’énergie est classiquement décrit par deux équations de conservation : la conservation de la matière et la conservation de l’énergie. À ces deux équations vient s’ajouter la vitesse du fluide classiquement donnée par la loi de Darcy tandis que les propriétés thermodynamiques, obtenues grâce à des équations théoriques ou empiriques (les équations d’état), ferment le modèle mathématique. Dès lors, ce modèle fermé, il existe
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21

Fortier, Robin. "Vers un système d'information géographique du couvert nival en Estrie." Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/2651.

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The objective of this research is to develop a system capable of simulating snow depth and snow water equivalent in the Sherbrooke to Mount-Megantic area of Quebec's Eastern Townships using meteorological and digital terrain data as input.The working hypothesis is that meteorological data may drive a point energy and mass balance snow cover model.The model used was developed by the Hydrologic Research Lab (National Weather Service) which was calibrated for local conditions using field data collected during two winters at several sites on Mount-Megantic. Snow water equivalent and depth are used
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22

Mohd, Farooq Azam. "Relation climat-glacier dans la zone de transition entre climat aride et mousson indienne : un cas d'étude dans l'Himachal Pradesh Inde." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU032/document.

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La région de l'Hindu-Kush Karakoram Himalaya (HKH) est la plus grande région englacée de la planète, hormis les calottes polaires. Dans cette région, les mesures météorologiques et de bilans de masse sont sporadiques et les observations glaciologiques concernent essentiellement les mesures de fluctuations des fronts des glaciers. Ainsi, la réponse de ces glaciers aux changements climatiques est très mal connue. Le but de ce travail de thèse est d'améliorer la connaissance des relations entre les variables météorologiques et les bilans de masse glaciaires à partir de l'étude du glacier du Chhot
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23

Zhang, Yifan. "Metabolic Energy Balances in Ketotic Rat Brain." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1370371336.

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Illikainen, M. (Mirja). "Mechanisms of thermomechanical pulp refining." Doctoral thesis, University of Oulu, 2008. http://urn.fi/urn:isbn:9789514289064.

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Abstract The objective of this thesis was to obtain new information about mechanisms of thermomechanical pulp refining in the inner area of a refiner disc gap by studying inter-fibre refining and by calculating the distribution of energy consumption in the refiner disc gap. The energy consumption of thermomechanical pulping process is very high although theoretically a small amount of energy is needed to create new fibre surfaces. Mechanisms of refining have been widely studied in order to understand the high energy consumption of the process, however, phenomena in the inner area of disc gap
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25

Rafiee, Nima. "Process design and energy efficiency analysis of an oil and gas processing plant." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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Abstract The objective of this thesis is process design to prepare a heat and mass balance and associated equipment list that will process untreated reservoir fluids to allow export of saleable gas and oil in an oil and gas processing plant. Gas will be exported to an existing pipeline, oil to a nearby shuttle tanker. By energy efficiency analysis, some energy saving opportunities has been found such as heat integration, replacing control valves with expanders and improving pumps and compressors adiabatic efficiency and then the amount of power recovered through these opportunities have been
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Rodriguez-Sanchez, Nidia. "Hydration and fluid balance : studies on body composition, drink formulation and ageing." Thesis, University of Stirling, 2016. http://hdl.handle.net/1893/25390.

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The thesis reports on 6 studies (2 of which were part of a multi-centre trial) examining hydration and fluid balance. The first study described in this thesis investigated the impact of hydration status on Dual energy x-ray absorptiometry (DXA) and other methods that are popular tools to determine body composition in athletes. We observed that it is important to ensure a euhydration when assessing body composition, particularly when considering changes associated with nutritional or exercise interventions. The second and third studies reported identified beverages that promote longer term flui
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El, Hajj Ahmad. "Nouveaux concepts d’élaboration de la pyrazolidine par la méthode Raschig et par voie indirecte, en transitant par la 1 et 2-pyrazoline, suivie d’une hydrogénation catalytique : synthèses et modélisations cinétiques, équilibres entre phases et schémas de procédés." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10354.

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Ce travail, effectué dans le cadre d'une convention de recherche avec la Société ISOCHEM, a pour objectif la mise au point d'un nouveau procédé de synthèse de la pyrazolidine par la voie Raschig directe et par voie indirecte, en transitant par la 1 et 2-pyrazoline, suivie d'une hydrogénation catalytique. Cette hydrazine suscite un grand intérêt en raison de ses nombreuses applications dans l'industrie pharmaceutique et des cosmétiques. Cette thèse a été financée par le Centre National de Recherche Scientifique dans le cadre d'une bourse doctorale ingénieure/PED. La première partie est consacré
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Agosta, Cécile. "Evolution du bilan de masse de surface Antarctique par régionalisation physique et contribution aux variations du niveau des mers." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENU023/document.

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Le Bilan de Masse de Surface (BMS, c'est-à-dire les précipitations de neige auxquelles est retranchée l'ablation par sublimation, ruissellement ou érosion) de la calotte polaire Antarctique représente une contribution majeure et encore mal connue à l'évolution actuelle du niveau des mers. Le stockage d'eau douce par accumulation de neige sur la calotte posée est supposé s'intensifier au cours du 21eme siècle, modérant l'élévation du niveau des mers et modifiant la dynamique glaciaire. Les trois-quarts du bilan de masse de surface Antarctique sont concentrés au dessous de 2000 m d'altitude alor
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Joiner, David Wayne. "Energy and mass fluxes over a boreal forest in northern Manitoba, net ecosystem exchange and energy balances for the boreas nsa young jack pine and fen sites." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ38310.pdf.

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Wenjing, Wei. "Assessment of Raw Materials in Stainless Steelmaking-Their Energy Consumption and Greenhouse Gas Emission." Licentiate thesis, KTH, Processer, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300133.

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In stainless steelmaking, around 68% of the total greenhouse gas emissions come from the processing of raw materials. Thus, it is important for steelmakers to make efforts together with their raw material suppliers to implement low-carbon initiatives. To facilitate such initiatives, assessment of raw materials will provide guidance. In this work, the assessment of materials consists of two parts: i) different production scenarios are studied by using a static process model coupled with life cycle assessment approach to investigate the reduction potential of environmental impacts for Mo and Ni
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Katende, Landry Mbangu. "Application of mass and energy balances to determine coal, air required and flue gas flow rates in a power plant." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/3051.

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Thesis (MEng (Mechanical Engineering))--Cape Peninsula University of Technology, 2019<br>The primary objective of this study was to determine the heat rate of the power plant using the measurements of critical parameters and MEB calculations. An additional goal of the project was to determine the flue gas and air mass flow rates which influence the efficiency of the coal power plant. The consumption of coal is a critical parameter affecting the efficiency of coal-fired steam boilers. From an operational perspective, the mass flow rate of pulverised coal is a major indicator of the rate of co
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GISOLO, DAVIDE. "Water, carbon and energy fluxes on grasslands of Western Alps: methodological issues, experimental data, hydrological modelling and atmospheric boundary layer phenomena." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2957761.

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Grimaldi, David Andres. "Dissolved Gases and a Carbon Dioxide Balance from the San Vicente Geothermal Fieldin El Salvador, Central America." Ohio University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1615276127141058.

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Tootla, Naeem Ebrahim. "Investigation into methods for the calculation and measurement of pulverised coal boiler flue gas furnace exit temperature." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20562.

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The boiler flue gas furnace exit temperature (FET) is a key operating parameter of coal fired steam boilers. From the design perspective, the FET is vital for materials selection and sizing of heat transfer surfaces. From an operating perspective, it is a major indicator of the rate of combustion and heat transfer that is occurring within the furnace. Downstream of the furnace, the FET has a significant impact on both the performance and reliability of the boiler heat exchangers, which ultimately impacts on both boiler efficiency and availability. Monitoring of the FET can advise operating and
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Tootla, Naeem Ebrahim. "Investigation into methods for the calculation and measurement of pulverised coal boiler flue gas furnace exit temperature." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/20562.

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The boiler flue gas furnace exit temperature (FET) is a key operating parameter of coal fired steam boilers. From the design perspective, the FET is vital for materials selection and sizing of heat transfer surfaces. From an operating perspective, it is a major indicator of the rate of combustion and heat transfer that is occurring within the furnace. Downstream of the furnace, the FET has a significant impact on both the performance and reliability of the boiler heat exchangers, which ultimately impacts on both boiler efficiency and availability. Monitoring of the FET can advise operating and
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Dantas, Thayse Naianne Pires. "Avaliacao de dados de secagem de suspensoes de polpas de frutas em leito de jorro com alimentacao intermitente." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15840.

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Made available in DSpace on 2014-12-17T15:01:32Z (GMT). No. of bitstreams: 1 ThayseNPD_DISSERT.pdf: 3011136 bytes, checksum: 3c14c7c4fc8b4067013feadbd30be411 (MD5) Previous issue date: 2013-08-08<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>The objective of this work was the development and improvement of the mathematical models based on mass and heat balances, representing the drying transient process fruit pulp in spouted bed dryer with intermittent feeding. Mass and energy balance for drying, represented by a system of differential equations, were developed in Fortr
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Lozano, Gacha María Fernanda [Verfasser]. "Energy Budget- and Temperature Index- based Calculations of Seasonal Mass Balances and Discharge in the Tropical Glacier Artesonraju and Artesoncocha Basin in the Cordillera Blanca, Peru / María Fernanda Lozano Gacha." Kassel : Universitätsbibliothek Kassel, 2020. http://d-nb.info/1214405401/34.

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Zuna, Zarko. "Utvärdering av pelletsförgasning för glassmältning : Fullskaleexperiment vid Kosta glasbruk våren 2004." Thesis, Växjö University, School of Technology and Design, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2054.

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<p>Den negativa miljöpåverkan från förbrukning av fossila bränslen ökar kravet på förnyelsebara energikällor. Biobränsle är ett speciellt lovande alternativ. Detta projekt vill visa på möjligheten att använda gas från biobränsleförgasning som förbränns utan synliga flammor i glassmältugnar. Med bättre teknik är det möjligt både att upprätthålla produktionen och reducera kväveoxidutsläppen med ekonomiska fördelar. Biobränslena bidrar inte till växthuseffekten. En del av hela projektet är de experiment som utfördes den 1 juni 2004 vid Kosta glasbruk. Experimenten tog 7 timmar och 50 minuter. Den
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Claverie, Etienne. "Modélisation de la température du sol avec un bilan d’énergie, application à la prédiction de l’émergence du maïs (Zea mais)." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC028/document.

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La croissance en début de cycle des grandes cultures est principalement influencée par la température et la teneur en eau du sol. Nous avons développé un modèle capable de prédire ces variables grâce à l’utilisation de données climatiques largement disponibles. Des analyses de la sensibilité du modèle nous ont permis d’identifier les composants qui contribuent à son incertitude. Après calibration, une erreur moyenne relative de moins de 10 % est constatée pour la température et la teneur en eau à 30 cm de profondeur.Dans des conditions de semis standard en Suisse, l’émergence du maïs a été mie
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Diaz, Bustos Erik O. "Human energy balance." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335099.

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Stratigou, Evdokia. "Identification and characterisation of physicochemical processes controlling indoor concentrations of submicron aerosols and volatile organic compounds." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0007/document.

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Cette thèse développe les connaissances scientifiques sur l’origine et le comportement des polluants intérieurs en phases gazeuse et particulaire. Une description complète des processus physiques contrôlant les concentrations de polluants en air intérieur dans une pièce inoccupée et non meublée a été réalisée. En utilisant des paramètres bien quantifiés (taux de renouvellement d’air, facteur de pénétration et vitesse de dépôt), nous avons pu appliquer un modèle de bilan massique aux particules. Les résultats ont montré que, en l’absence significative de sources intérieures, une caractérisation
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42

Stratigou, Evdokia. "Identification and characterisation of physicochemical processes controlling indoor concentrations of submicron aerosols and volatile organic compounds." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0007.

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Cette thèse développe les connaissances scientifiques sur l’origine et le comportement des polluants intérieurs en phases gazeuse et particulaire. Une description complète des processus physiques contrôlant les concentrations de polluants en air intérieur dans une pièce inoccupée et non meublée a été réalisée. En utilisant des paramètres bien quantifiés (taux de renouvellement d’air, facteur de pénétration et vitesse de dépôt), nous avons pu appliquer un modèle de bilan massique aux particules. Les résultats ont montré que, en l’absence significative de sources intérieures, une caractérisation
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43

Moreaux, Virginie. "Observation et modélisation des échanges d’énergie et de masse de jeunes peuplements forestiers du Sud-Ouest de la France." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14506/document.

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Ce travail de thèse a porté sur la prise en compte de la phase juvénile des peuplements forestiers du Sud-Ouest de la France dans la caractérisation des échanges sol-végétation-atmosphère. L’étude s’est focalisée sur des structures de peuplements contrastées de jeunes peuplements de Pins maritimes et d’Eucalyptus. La première partie de ces recherches a consisté à étudier de façon expérimentale les échanges de masse et d’énergie de jeunes plantations d’Eucalyptus et de Pins maritimes du Sud-Ouest. Trois sites instrumentés pour la détermination en continu des échanges de CO2 et H2O, bilan d’éner
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Gedye, Sharon Jane. "Mass balance in recent peats." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266139.

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Glover, Robin Wallace. "Energy balance climate modelling." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308058.

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Lessan, Nader Gholi. "Energy balance in hypothyroidism." Thesis, King's College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401037.

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Andersson, Emil. "Online Metallurgical Mass Balance and Reconciliation." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-185252.

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In mineral processing, one of the most important and versatile separation methods is flotation. Flotation utilizes the different surface properties of the valuable minerals in the ore to separate them from the less valuable gangue material in the ore. Crushed and ground ore is mixed with water and fed into flotation tanks. In the flotation tanks, the particles of valuable mineral are made hydrophobic. That way, they can be floated by attaching to air bubbles and gather on top of the flotation tank as froth. This froth, containing higher concentrations of valuable mineral, is recovered and then
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FUGAZZA, DAVIDE. "ALL EYES ON GLACIERS: REMOTE SENSING OF THE CRYOSPHERE." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/623598.

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Remote sensing has become an invaluable tool for glaciologists. The keys to its success are the ability to repeatedly monitor small to large, often inaccessible areas and quickly process data through the integration in geographical information system (GIS) environments. From aerial photography in the early days, remote sensing has evolved owing to the ever-increasing input of large amounts of data from satellite platforms, while traditional photogrammetric techniques are now experiencing a renaissance thanks to the growing importance of UAVs and terrestrial photography. This Ph.D. thesis expl
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Gourdeau, Sarah. "Energy balance of a vehicle." Thesis, KTH, Spårfordon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119700.

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Simulation has become a very useful tool to predict the characteristics of a system and perform analysis of parameters without having to run too many tests. The advanced system engineering team of Continental Automotive uses a 0D simulation program, AMESim, to realize simulations of vehicle models. These simulations are used e.g. to predict the fuel consumption and CO2 emissions. A tool has been developed over the course of previous internships to realize the energy balance of AMESim vehicle models, which goal is to check the consistency of the models (no creation or loss of energy) and simpli
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Hughes, Darren Arthur. "Exercise, appetite and energy balance." Thesis, University of Aberdeen, 2002. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225695.

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Obesity, through a persistent positive energy and fat balance is of major public health significance due to its detrimental health, social and financial costs. Increasing physical activity levels through recreational exercise and decreasing energy intake have been implicated with obesity prevention. However, the addition of exercise to normally sedentary routines will only prevent positive energy balance if it is not tracked b a compensatory response in energy intake and non-exercise physical activity [also termed non-exercise activity thermogenesis (NEAT)]. The current series of studies set o
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