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 20 of 462 for “"CAO"”.
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Almacenamiento de energía mediante ciclos termoquímicos de CaO
… reversibles a alta temperatura empleando CaO constituyen el objetivo central de la presente Tesis Doctoral. El trabajo llevado a cabo en esta Tesis Doctoral se ha centrado en el uso de las reacciones de carbonatación/calcinación de CaO/CaCO3 en procesos de combustión convencional e …
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Local government - enhancing the relationships between CAO and council
… between the Chief Administrative Officer (CAO) and municipal council, and further how it affects stakeholders. A review was made of the literature on local government in general, CAOs, and leadership. Qualitative research, and specifically exploring personal experience, was the best …
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Synthesis and Properties of ordered Mesoporous SiO2-CaO Bioactive glasses
… this project, highly ordered mesoporous SiO2 a?? CaO bioactive glasses were successfully synthesized via surfactant templating route. The formation and bioactivities of the ordered mesoporous bioactive glasses were investigated systematically. In order to investigate the effects of the ordered …
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Desarrollos de nuevos procesos de captura de CO2 con CaO en cementeras
La industria del cemento es responsable del 8% de las emisiones globales de CO2 y se sitúa como la segunda industria en emisiones directas de este gas de efecto invernadero. Además, se prevé que su demanda se incremente aún más durante las próximas décadas. Por tanto, el sector del cemento se …
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Desarrollo de reactores de lecho fluidizado para la captura de CO2 con CaO
… de captura de CO2 a alta temperatura empleando CaO como sorbente en algunas de sus principales rutas de proceso con el objetivo de avanzar hacia su implantación a escala industrial. Para ello se han llevado a cabo estudios experimentales a escala de planta piloto, así como trabajos de modelado …
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Particle Size Dependence on the Luminescence Spectra of Eu3+:Y2O3 and Eu3+:CaO
… nanocrystalline structures, Eu3+:Y2O3 and Eu3+:CaO, was investigated. The nanocrystalline structures were prepared by the laser-vaporization-gas-phase condensation of the bulk oxides. The particle size distribution and dominant particle diameters of the nanocrystals were determined by …
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Formation of CaC2 from CaO and "nascent" carbon species in a rotating-arc reactor.
Thesis. 1977. Sc.D. cn--Massachusetts Institute of Technology. Dept. of Chemical Engineering.
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Synthesis and Multi-Scale Characterization of Calcium Silicate Hydrate at Multiple CaO/SiO2 Mixture Ratios
… was first synthesized by mixing calcium oxide (CaO), created by calcining calcium carbonate (CaCO3) that was heated to 950 \xbaC for 24 hours with fumed silica (SiO2) and deionized water (H2O) under nitrogen which produced the synthetic gel-like C-S-H slurry. This composition mixture of …
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Development of CaO-based Sorbents for Post-Combustion Carbon Capture in the Calcium Looping Process
… synthesis technique was used for fabrication of CaO-based sorbents. The effect of fuel type and fuel ratio were investigated to optimize the physical properties of the produced sorbents and their CO2 capture performance. Among citric acid, β-alanine, and urea tested in this study, citric acid was …
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The approach to equilibrium of mixtures of CaO, A1₂O₃, and SiO₂ heated to various temperatures
Equilibrium conditions in the CaO-Al₂O₃-SiO₂ ternary system as shown by the equilibrium diagram were established by allowing the solid phases to crystallize out of a liquid phase at specific temperatures. The purpose of this investigation was to determine whether equilibrium was attained or was …
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Study on preparation of high performance CaO-MgO-Al2O3-SiO2 system glass-ceramic with industrial by-products
… them to melt. Different binary basicity (MCaO /MSiO<sub>2</sub> ) and content of Al<sub>2</sub>O<sub>3</sub> had been studied to determine the best formula for high performance glass-ceramic in terms of mechanical properties. Sample 04 (MCaO /MSiO<sub>2</sub> =0.4, …
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CAO Perspectives: The Role of General Education Objectives in Career and Technical Programs in the United States and Europe
… perceptions of their Chief Academic Officers (CAOs).</p> <p>In this qualitative study, three community colleges were selected from the Midwestern United States and matched with three analogous institutions from the European Union offering career and technical programs. The CAO at each college …
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Effects of dry versus modified wet distillers grains with solubles with or without calcium oxide on economics, growth performance, and ruminal metabolism of beef feedlot steers
… solubles (DGS) with or without calcium oxide (CaO) treatment to feedlot steers on: (1) growth performance, economics of gain, and USDA carcass grades; (2) pattern of intake and meal distribution; and (3) diet digestibility and rumen parameters. Exp. 1: Steers (n = 139; average initial BW = 336 …
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Synthese von Pulvern aus dem System CaO-SiO2 mittels nasschemischer Verfahren und Entwicklung eines Werkstoffes unter dem Aspekt einer Applikation in der Dentalmedizin
Die vorliegende Arbeit umfasst verschiedene Aspekte zur Entwicklung eines dentalmedizinischen Füllungsmaterials. <br>Die Ziele der Arbeit waren zum ersten die Optimierung nasschemischer Syntheseverfahren zur Herstellung von chemisch reinem Tricalciumsilicat, die als Alternative zur herkömmlichen …
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Effects of feeding CaO treated modified wet distillers grains with solubles or corn stover to cattle on performance, carcass characteristics, and ruminal metabolism
… simultaneously with the use of calcium oxide (CaO) in CS and MWDGS-based diets, nor has the magnitude of the response of CaO in these types of diets been investigated. Therefore, three experiments were conducted. The objective of these experiments was to determine the effects of feeding …
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Alkali attack of coal gasifier refractory linings
… 53% and 72% alumina cement, calcium aluminate (CaO•Al₂O₃) is decomposed by the reactions CaO•Al₂O₃ + 2Na + 1/20₂ = Na₂O•Al₂O₃ + CaO CaO•Al₂O₃ + 2K + 1/20₂ = K₂O•Al₂O₃ + CaO or CaO•Al₂O₃ + 2Na + l/2S₂ = Na₂0•Al₂O₃ + CaS CaO•Al₂O₃ + 2K + 1/2S₂ = K₂•Al₂O₃ + CaS
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CO2 capture and utilization using dual-functional catalysts
… study on the mechanisms of fast stage during CaO carbonation and sequentially proposed a unique three-dimensional supported structure for the improvement of carbon capture capacity and cyclic stability, but also converts the captured CO2 into value added products or uses the carbonation of CaO …
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The chief advancement officer: Role identification in fundraising at public four-year institutions of higher education in the United States
… the direction of the Chief Advancement Officer (CAO). Research exists on a president’s role in fundraising and to a lesser extent a dean’s role in the process; however, little has been written on the best role for a CAO to achieve fundraising success. The survey sample consisted of CAOs at …
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