Thesis (M.D.S.)--University of Adelaide, Dept. of Dentistry, 1987. / Bibliography: p. 110.

Thesis (M.S.)--School of Dentistry. University of Missouri--Kansas City, 2008. / "A thesis in dental hygiene education." Advisor: Bonnie Branson. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Aug. 07, 2008. Includes bibliographical references (leaves 53-58). Online version of the print edition.

The transition from Apartheid urban space to – something else – draws our attention from the fixing moments of historically divided cities to the experience of mobility, interaction and the dynamism of space. (Robinson 1999: 163) This dissertation will approach the modern, post-colonial and post-apartheid African city as experimental ground for exploring, understanding and expressing spatial dynamics through the visual language of cinema. The proposal intends to mediate between the complex historical context which is manifested in the built fabric of the city and the new dynamic and often unstable urban conditions of Johannesburg, by specifically focusing on the contrasting conditions of the Johannesburg Art Gallery and the Noord Street Taxi Rank. The role of cinema as a philosophical device in this dissertation is to produce a point of inception, an assemblage, or a terrain of encounter through which the project will be further investigated and articulated. The principal aim of the dissertation is to effectively react to contrasting aspects of both heritage and transience, whilst simulating the Cinematic Gaze, by creating a public platform that serves as an aperture for viewing as well as an urban stage with the potential to be viewed. The hypothesis states that, if successfully applied, cinematic space can accentuate the unique and vibrant conditions of the inner city. This will ultimately lead the city dweller to a better sense of association with his/her immediate surroundings and a better comprehension of his/her role in place-and-time in the urban environment / Dissertation (MArch(Prof))--University of Pretoria, 2014. / Architecture / MArch(Prof) / Unrestricted

Indiana University-Purdue University Indianapolis (IUPUI) / BACKGROUND The efficacy of sealants to aid in the prevention of pit and fissure caries is well documented. In order for the sealants to be effective, they must be placed properly and retained for as long as possible. Clinicians must be aware that the proper placement of sealants is technique-sensitive and must be well controlled in order to achieve the best results. This study aims to determine if certain variables have an effect on curing of the sealant material to a degree that would compromise its integrity, strength, and longevity. METHODS AND MATERIALS Two commonly used sealant materials Ultraseal XT (Ultradent Products Inc., South Jordan, UT) and Delton (Dentsply International, Woodbridge, Ontario, Canada) were chosen and tested for microhardness and abrasion resistance after they were polymerized. This study did not focus on the materials themselves, but rather the technique by which they were polymerized and what effect this had on the materials. Three separate light sources, a traditional halogen light (QHL 75, Dentsply International, Woodbridge, Ontario, Canada), and two newer LED lights (Ultralume LED, Ultradent Products Inc., South Jordan, UT; and 3M Freelight LED, 3M Corp, St Paul, MN) were used in this study. The materials were then cured with each light at each of three different distances: contact (0.5 mm), 2 mm, and 10 mm. The effects of light source variation and distance from the material at the time of polymerization was then evaluated for any significance to sealant placement technique. Specimens were tested for each variable combination of sealant material, light source, and distance between the two while curing. Six samples were tested for each variable grouping for abrasion resistance, and four separate san1ples were tested fron1 the san1e grouping for Knoop hardness. The results were analyzed for significance to determine if certain techniques are or could be beneficial or damaging to the quality of care provided by today's practitioners. RESULTS It was found that materials and light sources varied in combination and with different techniques (e.g., distance). In general, the top surface polymerized best when cured at a distance of 2 mm to 10 mm, while the bottom surface polymerized best at a distance of 0.5 mm. The halogen light consistently outperformed the two LED lights, with the 3M LED consistently producing the worst results. CONCLUSIONS The halogen curing light used in this study outperformed the LED lights in almost every category, despite the LED light manufacturer's claims of equality. For more reliable polymerization, the halogen light should be used. SIGNIFICANCE The practitioner must be aware of the material that he/she is using and how the chosen light source polymerizes that material. Manufacturers' claims and recommendations cannot be trusted to accurately produce the best results with every product on the market today, sometimes not even with the manufacturers' own products. It is crucial for practitioners to be well versed and knowledgeable about the products that they use, based on current research and not manufacturers' claims.

Notre étude a porté sur un acier de construction navale (type S355NL) employé dans la conception de bâtiments de surface. Si le comportement des fissures longues est assez bien connu, celui de fissures courtes est peu maîtrisé. Ces deux types de fissures ne présentent en réalité que peu de points communs et la démarche à adopter lors de l'étude de ces fissures courtes a nécessité une réflexion particulière. Il est notamment important de noter que la vitesse de propagation des fissures courtes est considérablement influencée par les constituants microstructuraux du matériau (inclusions, joints de grain...). Des essais à amplitude de contrainte constante ont tout d'abord été entrepris pour caractériser le comportement des fissures courtes. Les rapports de charge R utilisés pour ces essais de fatigue furent 0,1, 0,3, 0,5 et enfin -1. Des essais à amplitude variable (croissante, décroissante et issue d'un spectre de chargement) ont également été réalisés. Ces travaux ont donné lieu à de nombreux résultats expérimentaux concernant la propagation de fissures de fatigue qu'il s'agisse de fissures propageantes (conduisant à la rupture) ou non propageantes et ce à partir d'une taille de mesure de 20-25 µm. Les résultats obtenus ont été systématiquement comparés aux courbes de propagation des fissures longues (courbes da/dN – ∃Keff) également établies pour ce matériau.<br />Parallèlement à ces travaux, une étude numérique a été menée en utilisant le code éléments finis Abaqus\Standard. Nous avons tout d'abord déterminé la répartition des contraintes et le coefficient de concentration de contrainte KT dans la zone d'amorçage pour les éprouvettes utilisées. Puis, dans le but de calculer le facteur d'intensité de contraintes K nécessaire à la modélisation du comportement des fissures de fatigue, plusieurs calculs basés sur le concept d'intégrale J furent menés. Ceux-ci ont été établies pour différentes configurations d'éprouvettes et de fissures (semi-elliptique, semi-circulaire, coin, surface,...) dans les cas élastique et élastoplastique. Enfin, deux lois ont été proposées pour prédire la durée de propagation d'une fissure par fatigue.

Thesis (M.S.)--University of Michigan, 1970.

Thesis (M.S.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains ix, 159 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 79-85).

Thesis--University of Rochester, 1965.

Thesis (M.S.)--University of Michigan, 1999. / Includes bibliographical references.

Thesis (M.S.)--University of Michigan, 1970.