Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Radiation absorption"”.
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Diagnostic studies of ECHAM GCMs
… made in ECAHM4 T106 from ECHAM3 T106 in the radiation scheme, the treatment of radiation absorption by water vapor and cloud water and the calculation methods of advection of water vapor and cloud water, etc. It is shown that the simulation of annual mean heat balance at ocean surface has …
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Development of magnesium tetraborate as a material for thermoluminescence dosimetry
… is under development. Near tissue-equivalent radiation absorption properties and reported sensitivity to low radiation doses offer advantages over commonly employed LiF phosphors. Sintered wafers suitable for routine measurement were prepared. The effects of powder preparation conditions and …
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Physical properties, evaporation and combustion characteristics of nanofluid-type fuels
… enhancement is mainly attributed to the strong radiation absorption by the nanofluid fuels from the flame. Computational models were developed to determine the ratio of radiation retention by the entire depth of the fluid (volumetric absorptivity) using optical properties of both the particles …
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The response of field bean (Vicia faba L.) to irrigation and sowing date
… was almost entirely associated with increased radiation absorption. The utilisation coefficient was stable at about 1.7 g MJ⁻¹. Later in the season irrigation increased TDM and yield by increasing both the amount of radiation absorbed and the utilisation coefficient. Autumn sowing increased TDM …
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Thermal deformations of plates produced by temperature distributions satisfying poisson's equation
… heat generation within the plate and from radiation absorption.
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Review of solar thermoelectric energy conversion and analysis of a two cover flat-plate solar collector
… performed. The model focused specifically on radiation absorption through the cover system and radiation and convection losses from the absorption plate to determine the parameters that most significantly affect the efficiency of the collector and the overall efficiency of the solar …
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Spectroscopic analysis of selected silicon ceramics
… structure of materials by measuring the absorption and emission of x-ray radiation. Absorption and emission spectra of these materials are presented, many of which have not be previously documented. The results are compared to model spectra and together they provide information about the …
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Biologically inspired transparent material as an energy system
… device, to actively regulate solar radiation as an IR absorber, to lower thepolymer device phase transition temperature. This research determines thisfunctionality by hierarchical multi micro-channel network scaling, as a leaf resistor. Resistor conduit analysis defines flow target …
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Increased biopolymer pigment production in bacteria and fungi exposed to ionizing radiation
… concern for manned space missions is ionizing radiation, which is known to pose both acute and chronic risks to many organisms. It is critical to expand strategies for radiation protection, including utilizing new materials and fabrication methods designed to support and augment health and …
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Synthesis and characterization of cerium-doped lanthanum halide colloidal nanocrystals
… are attractive in the field of high-energy radiation detection due to their interesting properties that include efficient radiation absorption, highly luminescent activator (cerium) emission through atomic transitions, host lattice protecting activators to prevent luminescence quenching, and …
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Real-Time Radiation Detection within the Gastrointestinal Tract
The risk of a radiation emergency is becoming more prevalent as the misuse of nuclear facilities or technologies by terrorists or rogue nation-states continues to increase. A radiation emergency could cause instantaneous and sustained large releases of penetrating radiation, which would result in …
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Coal gasification for fuel synthesis: Multiphysics modeling and new concepts
… carbon-in-water suspensions (CWS) under intense radiation were studied both experimentally and theoretically. CWS have unique optical properties and have received increasing interest recently for various applications. In the field of combustion science, CWS have been recommended as a substitute …
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The response of sugar beet (Beta vulgaris L.) to planting method and sowing date
… terms of the amount of photosynthetically active radiation (PAR) absorbed and its efficiency of use (ε, gMJ⁻¹) in DM or sugar production. The relationship between TDM, root DM or sugar yield and accumulated PAR was linear in both seasons. The slope of the regression line represented a constant …
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The growth of density fluctuations in a finite sized inhomogeneous plasma
The details of the absorption of electromagnetic radiation in a plasma are important to the physics of laser-fusion. We have studied the growth of density fluctuations in an inhomogeneous plasma because two mechanisms of absorption, anomalous absorption due to the growth of parametric instabilities …