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 8 of 8 for “"Macor"”.
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Use of a Synthetic Substrate for Orthodontic Bond Strength Testing
… this study was to investigate the suitability of Macor as a substrate for bond strength testing of orthodontic adhesives. Macor samples were custom prepared in a shape similar to that of a human maxillary premolar. The groups tested were: Group 1: acid-etched with 9.6% hydrofluoric acid (HFA) for …
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Floating head skin friction gage measurements in supersonic flows
… gage made of a machinable ceramic called Macor was then designed to increase the resonant natural frequency (3600 Hz) and the insulating properties of the gage. Consequently, the Macor model floating head design is capable of measuring the skin friction coefficient in short duration, high …
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Development of a micro-FID using a diffusion flame
… tested in an encapsulated structure of Quartz-Macor®-Quartz layers. Diffusion flames are generally known to be more controllable and stable than premixed flames, which fits our purpose for the micro-FID, where the stability plays an important role for many applications. Various Macor designs …
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Assessment of Current Oil Pipeline Disasters and Mitigation Strategies in Nigeria
… a Ministry of Artisanal Crude Oil Refining (MACOR), and implement Environmental Impact Assessment reports, as required by Decree No. 86 of 1992.
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Thermal Modeling and Validation Testing of a Miniature Xenon Ion Thruster
… Sheathing the entire keeper electrode with Macor was shown to reduce the</p> <p>temperature by as much as 13.3C at certain times and locations. Due to its lower</p> <p>thermal conductivity, it was hypothesized that a thruster made of titanium would</p> <p>impede heat transfer to the magnets, …
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Convective Heat Flux Sensor Validation, Qualification and Integration in Test Articles
… mounted in ¾ in. diameter stainless steel, MACOR, and Graphite hemispheres were chosen as the test articles for this study. An inverse heat flux calculation was performed using the coaxial thermocouple temperature data for comparison with the Schmidt-Boelter gage. Before wind tunnel testing, …
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On the coordination chemistry of pentavalent (σ⁴, λ⁵) phosphorus compounds
The work described herein details the synthesis of a variety of pentavalent organophosphorus compounds and their applications as ligands to address important problems in coordination chemistry. This research encompasses two main themes: (1) the asymmetric synthesis of enantiopure …
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Spatial confinement of metallodielectric eutectic alloys and related outreach curriculum studies
… application. In this study, a thermally isolated Macor ceramic fixture was used to directionally solidify GeAl samples at various thermal gradients and draw rates. This Macor fixture allowed for both thermal isolation and sample confinement at three different thicknesses. Both the surface and …