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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

Combined radiation and conduction in a nongray participating medium that absorbs, emits, and anisotropically scatters /

Houston, Robert Lee January 1981 (has links)
No description available.
192

Effect of porosity on the strength of a sintered glass powder /

Niesz, Dale Edward January 1965 (has links)
No description available.
193

Reaction mechanisms for low-shrinkage vitrified ceramics /

Melde, Gregg Folger January 1969 (has links)
No description available.
194

Iron oxide phase development and related magnetic phenomena in a glass-magnetite system /

Gupta, Subodh Chandra January 1970 (has links)
No description available.
195

Rates of formation and stability of crystalline phases formed during devitrification in high-temperature refractory calcines /

Ogilby, Robert Russell January 1967 (has links)
No description available.
196

The viscosity of particulate - glass suspensions /4cby Rasheed Ali Zaidi.

Ali-Zaidi, Syed Rasheed January 1975 (has links)
No description available.
197

Volumetric Transparency: Application of an Improved Double Glass Facade System to Cowgill Hall, Blacksburg

Wang, Lu 17 February 2005 (has links)
The initial idea for this thesis involved the design of an addition to Cowgill Hall on the Virginia Tech Campus in Blacksburg, Virginia. This addition, to be constructed with an envelope comprised primarily of glass, would be located on the south side of Cowgill Hall, adjacent to Cowgill Plaza. The all-glass box would add a transparent volume to the existing building, diminishing the barrier between inside and outside. The project would also energize the existing plaza by connecting the activity inside to outside and providing the dynamic reflection of a glass facade. Cowgill Hall would also be given new life by providing a new shared vertical space for dynamic communication and light. Potential problems associated with the all-glass box include high heat loss or gain, glare and noise control. A double envelope system of construction was explored as a means of solving some of these problems and an endeavor on literature review, technical research and design improvement of double glass facade was also made. / Master of Architecture
198

Process in glass art : a study of some technical and conceptual issues

Hemp, Doreen 11 1900 (has links)
Glass has been made and used for centuries but South African artists, isolated for the last three decades, are only now becoming aware of the potential of hot or warm glass as an art medium. In antiquity glass objects were created using various processes but the 'factory' tradition began with the discovery of the blowing iron in the first century AD. The invention of the tank furnace in the late 1950s revolutionised modem production, enabling individual artists to make glass in private studios without blowing teams. The research describes ancient.. glassmaking processes and indicates how they have been explored, adapted and used by contemporary artists world wide, challenging craft orientated paradigms, and proving that glass is a viable and important sculpture medium. The practical research demonstrates the application of many processes and relates technical issues to sculptural concepts which are realized through the physical and material properties of glass. / Art History, Visual Arts & Musicology / M.A. (Fine Art)
199

Measurement of the through-thickness strength of composites

Taniguchi, Shinro January 1998 (has links)
This research deals with the mechanical characterisation of thick composite laminates in the through-thickness direction. Three independent glass fibre/epoxy laminate configurations, namely cross, quasi-isotropic, and woven, plies were investigated. Six specimen configurations, of which two were developed herein, were employed in order to determine the strength behaviour of these three laminate configurations when subjected to interlaminar shear and interlaminar tensile stresses in isolation and in combination. The stress and strain distributions were estimated using the ABAQUS FEA package. The strain distribution obtained thereby was verified experimentally via Moirandeacute; interferometry which records the exact strain field at the test section. A two dimensional failure envelope is defined for each laminate configuration using the experimentally obtained data. All three independent laminate configurations exhibited almost identical failure envelopes. The woven laminate exhibited superior interlaminar shear strength when subjected to combined interlaminar shear and interlaminar tensile stresses, whereas the cross-ply laminate exhibited superior interlaminar tensile strength when subjected to the same combination of stress. The characteristics of the quasi-isotropic laminate were similar to that of the cross-ply laminate. A partial three dimensional failure envelope was also defined for the materials tested.
200

Calcium Silicates: Glass Content and Hydration Behavior

Zgambo, Thomas P. (Thomas Patrick) 08 1900 (has links)
Pure, MgO doped and B2C3 doped monocalcium, dicalcium, and tricalcium silicates were prepared with different glass contents. Characterization of the anhydrous materials was carried out using optical microscopy, infrared absorption spectroscopy, and X-ray powder diffraction. The hydration of these compounds was studied as a function of the glass contents. The hydration studies were conducted at 25°C. Water/solid ratios of 0.5, 1, 10, and 16 were used for the various experiments. The hydration behavior was monitored through calorimetry, conductometry, pH measurements, morphological developments by scanning electron microscopy, phase development by X-ray powder diffraction, and percent combined water by thermogravimetry. A highly sensitive ten cell pseudo-adiabatic microcalorimeter was designed and constructed for early hydration studies. Conductometry was found to be of great utility in monitoring the hydration of monocalcium silicate and the borate doped dicalcium silicates.

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