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Tesi sul tema "Radiative and effective properties"

Autore: Grafiati

Pubblicato: 7 luglio 2024

Ultima modifica: 31 luglio 2025

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1

Wang, Xiaojia. "Study of the radiative properties of aligned carbon nanotubes and silver nanorods." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42871.

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Arrays of nanotubes/rods made of appropriate materials can yield unique radiative properties, such as large absorption and optical anisotropy, with broad applications from high-efficiency emitters and absorbers for energy conversion to the polarization conversion via anisotropic responses. The objective of this dissertation is to investigate the radiative properties of arrays formed by aligned carbon nanotubes (CNTs) and silver nanorods (AgNRs). The CNT arrays used in the present study consist of multi-walled CNTs synthesized vertically on silicon substrates using thermal chemical vapor depo

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2

Guerra, Timothée. "Interaction lumière-matière dans des suspensions de nanoparticules : homogénéisation et conception de nouvelles propriétés optiques." Electronic Thesis or Diss., Orléans, 2024. http://www.theses.fr/2024ORLE1005.

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Les milieux désordonnés composés de nanoparticules revêtent une grande importance dans de nombreuses applications, particulièrement celles liées à l'efficacité énergétique telle que le refroidissement radiatif. Dès lors, la compréhension de l'interaction lumière-matière est primordiale, mais s'avère très complexe. En effet, ces études doivent bien souvent passer par la résolution des équations de Maxwell dans des systèmes constitués de milliers de particules, permettant ainsi de prendre en compte les phénomènes de diffusion et d'interférences. De façon à réduire l'importante charge numérique q

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3

Burnett, P. D. S. "Radiative properties of confined plasmas." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275600.

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4

Francis, Peter N. "Infrared radiative properties of clouds." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302829.

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5

Garrett, Timothy J. "Radiative properties of arctic clouds /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/10090.

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6

Jiang, Jingyi. "Retrieving leaf and canopy characteristics from their radiative properties using physically based models : from laboratory to satellite observations Estimation of leaf traits from reflectance measurements: comparison between methods based on vegetation indices and several versions of the PROSPECT model a model of leaf optical properties accounting for the differences between upper and lower faces Speeding up 3D radiative transfer simulations: a physically based approximation of canopy reflectance dependency on wavelength, leaf biochemical composition and soil reflectance Effective GAI for crops is best estimated from reflectance observations as compared to GAI and LAI Optimal learning for GAI and chlorophyll estimation from 1D and 3D radiative transfer model inversion: the case of wheat and maize crops observed by Sentinel2." Thesis, Avignon, 2019. http://www.theses.fr/2019AVIG0708.

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La mesure des caractéristiques des feuilles et du couvert végétal par télédétection est un moyen efficace et non destructif d’effectuer un suivi des cultures, que ce soit pour la prise de décision dans la gestion d’itinéraires techniques an agriculture de précision ou pour le phénotypage au champ pour améliorer l'efficacité de la sélection variétale. Grâce à l’augmentation de la puissance de calcul des machines et à la disponibilité croissante d'images à haute résolution spatiale, les méthodes d’estimation peuvent maintenant bénéficier de simulations plus précises des modèles de transfert radi

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7

Assi, Benoît [Verfasser]. "Electroweak Radiative Corrections and Effective Field Theories / Benoît Assi." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2021. http://d-nb.info/1240835590/34.

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8

Becker, H. "Controlling the radiative properties of conjugated polymers." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596510.

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My research has focused on the effects of reflective surfaces such as metals and dielectric stacks on the light emission from conjugated polymers. Conjugated polymers have semiconducting properties which arise from the delocalisation of electrons along the polymer backbone. These plastics are efficient light-emitters both in photoluminscence (PL) and Electroluminescence (EL). One of the unique features of these materials is their broad emission spectrum. Proximity to reflective surfaces alters the radiative rate of an emitter because of interference effects. This modification to the radiative

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9

Liu, Xianglei. "Tailoring thermal radiative properties and enhancing near-field radiative heat flux with electromagnetic metamaterials." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54960.

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All substances above zero kelvin temperature emit fluctuating electromagnetic waves due to the random motions of charge carriers. Controlling the spectral and directional radiative properties of surfaces has wide applications in energy harvesting and thermal management. Artificial metamaterials have attracted much attention in the last decade due to their unprecedented optical and thermal properties beyond those existing in nature. This dissertation aims at tailoring radiative properties at infrared regime and enhancing the near-field radiative heat transfer by employing metamaterials. A compr

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10

Bourgeois, C. Saskia. "The radiative properties of snow at Summit, Greenland /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16758.

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11

Mavrogordatos, Themistoklis. "Emission properties of radiative chiral nematic liquid crystals." Thesis, University of Cambridge, 2015. https://www.repository.cam.ac.uk/handle/1810/247156.

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In this work, we calculate the density of photon states (DOS) of the normal modes in dye-doped chiral nematic liquid crystal (LC) cells in the presence of various loss mechanisms. Losses and gain are incorporated into the transmission characteristics through the introduction of a small imaginary part in the dielectric constant perpendicular and along the director, for which we assume no frequency dispersion. Theoretical results are presented on the DOS in the region of the photonic band gap for a range of values of the loss coefficient and different values of the optical anisotropy. The obtain

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12

Bantges, Richard John. "Cirrus cloud radiative properties in the thermal infrared." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344152.

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13

Cunsolo, Salvatore. "Radiative properties computational modeling of porous cellular materials." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI005/document.

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Les transferts thermiques par rayonnement dans des mousses sont modélisés à partir de la morphologie du matériau et des propriétés de sa phase solide. Dans ce travail de thèse, une attention particulière est portée sur les modèles radiatifs de Monte Carlo. Les différentes approches d’homogénéisation telles que « Homogeneous Phase » (HPA) and « Multi Phase » (MPA) sont discutées et comparées. Des développements novateurs sont proposés pour améliorer la précision des résultats. Nos avancées permettent de générer numériquement trois types de mousses périodiques couvrant un large domaine de matéri

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14

Rogne, Henrik. "Thermal radiative properties of Si, GaAs, and InP." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627277.

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15

Xu, Jin. "Direct aerosol radiative forcing based on measurements of aerosol radiative, chemical and physical properties in China." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/20173.

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16

Nouri, Nima. "Radiative Conductivity Analysis Of Low-Density Fibrous Materials." UKnowledge, 2015. https://uknowledge.uky.edu/me_etds/66.

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The effective radiative conductivity of fibrous material is an important part of the evaluation of the thermal performance of fibrous insulators. To better evaluate this material property, a three-dimensional direct simulation model which calculates the effective radiative conductivity of fibrous material is proposed. Two different geometries are used in this analysis. The simplified model assumes that the fibers are in a cylindrical shape and does not require identically-sized fibers or a symmetric configuration. Using a geometry with properties resembling those of a fibrous insulator, a nume

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17

Sun, Wenbo. "An investigation of infrared radiative properties of cirrus clouds." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24928.pdf.

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18

Chalmers, Nicky. "Using retrieved cloud properties to investigate their radiative impact." Thesis, University of Reading, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553137.

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Abstract (sommario):

The cloud climate feedback has long been recognised as one of the greatest sources of uncertainty of future climate predictions. In order to narrow this uncertainty models should be evaluated in terms of cloud properties and their radiative sensitivity to those properties. Over recent years methods have been developed to retrieve cloud properties (ice and liquid water content), therefore allowing this evaluation. This thesis focuses on model validation by using retrieved cloud property information, from active remote sensing instruments at Lindenberg in Germany, as input to a radiative transfe

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19

Brent, Kevin M. "Optimization of Fire Blanket Performance by Varying Radiative Properties." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1313767793.

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20

Sweet, Julian. "RADIATIVE COUPLING AND DECAY PROPERTIES OF QUANTUM CONFINED SEMICONDUCTORS." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194915.

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Several contemporary research topics on the subject of light-matter coupling are addressed. Through a variety of experimental methods, the emissive and carrier correlation properties of both quantum dots (QD) and quantum wells (QW) are explored.The radiative decay properties of self-assembled indium arsenide (InAs) quantum dots grown by molecular beam epitaxy (MBE) are discussed. The measurement of radiative lifetime is used to determine dipole moment. In addition, evidence is presented of radiative lifetime reduction for quasi-resonant and strictly resonant time-resolved measurements. This le

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21

De, Silva A. A. "Measurement of some radiative properties of solar absorber materials." Thesis, Open University, 1986. http://oro.open.ac.uk/56922/.

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This work describes, (i) the designing and building of two sets of apparatus, namely a Liquid Nitrogen Cooled Ditectional Emissometer and a Laser-source Spectral Bidirectional Reflectometer (ii) measurements using the above apparatus on Solar selective absorber (Maxorb, Cusorb, Skysorb, Solarcoat- 100), non-selective absorber (Nextel, Solarcoat-50) and metal (Al, Cu and brass) samples. The emissometer incorporates liquid nitrogen cooling of the sample chamber thus reducing the error due to emission from the surroundings and extending the working range of sample temperature down to about 273 K.

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22

Allen, Clare. "The influence of multi-dimensional radiative transfer on the evolution and radiative properties of tropical convective clouds." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490579.

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This study investigates the role of multi-dimensional (MD) solar radiation on the cloud radiative properties and cloud evolution for convective clouds using the UK Met Office Large Eddy Model (LEM) with an interactively coupled Monte Carlo (MC) radiation model. Simulations are performed with the MC scheme running in MD mode and in Independent Column Approximation (ICA) mode. These simulations have been studied to ascertain the impact and understand how MD radiation is influencing clouds differently from the lCA implementation. Since the difference between the ICA and MD radiation is greatest f

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23

Ring, Harvey Brents III. "Radiative ignition of a wall jet." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/18937.

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24

Charron, Luc G. "Radiative properties of molybdenum sulfide and other transition metal dichalcogenides." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26599.

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Low temperature radiative properties of the layered transition metal dichalcogenides 2H-MoS2, 2H-WS2 and 2H-WSe 2 are investigated. Synthetically grown crystals of all three materials, natural 2H-MoS2 single crystals and several 2H-MoS2 and 2H-WS2 commercial powders are studied. Steady-state photoluminescence (PL) measurements performed on the samples reveal two distinct radiative regions in the near infrared. The first region consisting of several sharp lines is produced by bound excitons related to the halogen transport agent intercalated within the van der Waals gap of the layered compounds

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25

Ridley, David A. "Aerosol Radiative Properties Analysed using Global Models of Aerosol Microphysics." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494262.

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26

CRISCUOLI, SERENA. "Radiative properties of complex magnetic elements in the solar photosphere." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2008. http://hdl.handle.net/2108/599.

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In this thesis I investigate the photometric and geometric properties of bright magnetic features in the lower solar atmosphere. The contribution of these fea- tures to Total Solar Irradiance (TSI here after) variations observed at different temporal scales has been broadly showed during the last years. Nevertheless, measurements and theoretical investigations of their properties, on which recon- structions of TSI variations are based, have produced discrepant results. In order to interpret discrepancies presented in the literature and to improve our understanding of physical properties

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27

Ghaemi, Hamid. "The effective properties of composite material." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ58036.pdf.

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28

Chopra, Prateek. "Effective mechanical properties of lattice materials." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39436.

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Abstract (sommario):

Lattice materials possess a spatially repeating porous microstructure or unit cell. Their usefulness lies in their multi-functionality in terms of providing high specific stiffness, thermal conductivity, energy absorption and vibration control by attenuating forcing frequencies falling within the band gap region. Analytical expressions have been proposed in the past to predict cell geometry dependent effective material properties by considering a lattice as a network of beams in the high porosity limit. Applying these analytical techniques to complex cell geometries is cumbersome. This preclud

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29

Lehmann, Brian (Brian Todd). "Numerical properties of pseudo-effective divisors." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60194.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 69-71).<br>Suppose that X is a smooth variety and L is an effective divisor. One of the main goals of bi rational geometry is to understand the asymptotic behavior of the linear series... as m increases. The two most important features of the asymptotic behavior - the litaka dimension and the litaka fibration - are subtle and difficult to work with. In this thesis we will construct approximations to these objects that depend onl

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30

Lee, Hyunjin. "Radiative properties of silicon wafers with microroughness and thin-film coatings." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-07092006-181152/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006.<br>Zhang, Zhuomin, Committee Chair ; Joshi, Yogendra, Committee Member ; Lee, Kok-Meng, Committee Member ; Gallivan, Martha, Committee Member ; Zhao, Yiping, Committee Member.

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31

Gilbert, Dean. "Observations and calculations of radiative properties of clouds observed during RACE." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ44171.pdf.

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32

Ivanov, Vladyslav Victorovych. "Cold atoms modified radiative properties and evaporative cooling from optical traps /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/47332.

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33

Taylor, Jonathan P. "The remote retrieval of stratiform water cloud radiative and microphysical properties." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357173.

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34

Aasum, Yngve. "Effective properties of reservoir simulator grid blocks /." Access abstract and link to full text, 1992. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9300177.

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35

Okyay, Gizem. "Impact of the morphology of soot aggregates on their radiative properties and the subsequent radiative heat transfer through sooty gaseous mixtures." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC031/document.

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Les suies et leur caractérisation constituent des sujets de recherche très actuels dans divers domaines tels que le diagnostic de la combustion, la combustion numérique, l’optique atmosphérique, l'environnement et les applications de santé. Notre étude se concentre sur les propriétés radiatives des agrégats de suie issus de flammes de combustion ; notre objectif est de déterminer l’effet de la présence de suies sur le transfert de chaleur par rayonnement pour la simulation d'applications industrielles à haute température impliquant la combustion de gaz. Les études actuelles de modélisation du

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36

Lee, Yong-Keun. "Study of cloud properties from single-scattering, radiative forcing, and retrieval perspectives." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1734.

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37

Fu, Ceji. "Radiative Properties of Emerging Materials and Radiation Heat Transfer at the Nanoscale." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4941.

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A negative index material (NIM), which possesses simultaneously negative permittivity and permeability, is an emerging material that has caught many researchers attention after it was first demonstrated in 2001. It has been shown that electromagnetic waves propagating in NIMs have some remarkable properties such as negative phase velocities and negative refraction and hold enormous promise for applications in imaging and optical communications. This dissertation is centered on investigating the unique aspects of the radiative properties of NIMs. Photon tunneling, which relies on evanescent wav

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38

Abel, Steven John. "The radiative properties and direct effect of Southern African biomass burning aerosols." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417397.

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39

Wang, Xuan Ph D. Massachusetts Institute of Technology. "Exploring the absorption properties and direct radiative impact of atmospheric carbonaceous aerosols." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113493.

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Thesis: Ph. D. in Environmental Chemistry, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 125-141).<br>Atmospheric aerosols are important due to their adverse effects on human health and their direct and indirect radiative effects on climate, which are significant and very uncertain factors contributing to global climate change. In estimating the direct radiative effect (DRE), the absorption from carbonaceous aerosols, including black carbon (BC) and brown car

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40

Takeuti, Douglas de Freitas. "Thermal radiative properties of ion-implanted silicon and titanium and cobalt silicides." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627343.

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41

Reid, Jeffrey Spencer. "Emission, evolution, and radiative properties of particles from biomass burning in Brazil /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/10099.

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42

Toullier, Thibaud. "Simultaneous characterization of objects temperature and radiative properties through multispectral infrared thermography." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S038/document.

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Abstract (sommario):

L'utilisation de caméras infrarouges bas coûts pour la surveillance long-terme d'infrastructures est prometteuse grâce aux dernières avancées technologiques du domaine. Une mesure précise de la température des surfaces observées in-situ se heurte au manque de connaissance des propriétés radiatives de la scène. L'utilisation d'une instrumentation multi-capteurs permet d'affiner le modèle de mesure afin d'obtenir une estimation plus précise de la température. A contrario, il est montré qu'il est toujours possible d'exploiter des données climatiques en ligne pour pallier un manque de capteur. Des

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43

Bulgin, Claire Elizabeth. "Improved understanding of aerosol processes using satellite observations of aerosol optical properties." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4906.

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Atmospheric aerosols are the largest remaining uncertainty in the Earth’s radiative budget and it is important that we improve our knowledge of aerosol processes if we are to understand current radiative forcing and accurately project changes in future climate. Aerosols affect the radiation balance directly through the absorption and scattering of incoming solar radiation and indirectly through the modification of cloud microphysical properties. Understanding aerosol forcing remains challenging due to the short atmospheric residence time of aerosols resulting in large spatial and temporal hete

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44

Schubert, Richard [Verfasser]. "On the effective properties of suspensions / Richard Schubert." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/118185590X/34.

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45

Johnston, Desmond Alexander. "Gauge properties and convexity of the effective potential." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38054.

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46

Zhu, Junlin. "Effective properties for flow in heterogeneous porous media." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39416.

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47

Poladian, Leon. "Effective transport and optical properties of composite materials." Phd thesis, Department of Theoretical Physics, 1990. http://hdl.handle.net/2123/11724.

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48

Dauchet, Jérémi. "Analyse radiative des photobioréacteurs." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00914315.

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L'ingénierie de la photosynthèse est une voie prometteuse en vue de produire à la fois des vecteurs énergétiques et des molécules plateformes pour palier la raréfaction des ressources fossiles. Le défi à relever est de taille car il faut réussir à mettre au point des procédés solaires de production de biomasse à constante de temps courte (quelques jours), là où une centaine de millions d'années a été nécessaire à la formation du pétrole. Cet objectif pourrait être atteint en cultivant des micro-organismes photosynthétiques dans des photobioréacteurs dont les performances cinétiques en surface

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49

Zheng, Xiaoyu Forest M. Gregory. "On the effective properties of nematic polymer nano-composites." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,248.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.<br>Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Mathematics." Discipline: Mathematics; Department/School: Mathematics.

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50

Dimas, Leon Sokratis Scheie. "Effective mechanical Properties of material models with random heterogeneities." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103706.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 191-198).<br>In this thesis we obtain analytical approximations to the probability distribution of the elastic tensor and fracture strengths of material models with random heterogeneities. We start by investigating the effective elastic properties of one-, two-, and three-dimensional rectangular blocks whose Young's modulus varies spatially as a lognormal random field. We decompose the spatial fluc

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