Thesis (Ph. D.)--University of Hong Kong, 2009. / Includes bibliographical references (leaves 187-190). Also available in print.

Thesis (Ph.D.)--University of Hong Kong, 2003. / Includes bibliographical references. Also available in print.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1966. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph.D.)--Brown University, 2005. / Vita. Thesis advisor: Christoph G. Rose-Petruck. Includes bibliographical references (leaves 95-107). Also available online.

Thesis (M. Sc.)--University of Canterbury, 2005. / Typescript (photocopy). On t.p. "n+" is superscript. "April 2005." Includes bibliographical references (leaves 135-137). Also available via the World Wide Web.

xi, 289 f. : il. / Submitted by Rodrigo Meirelles (rodrigomei@ufba.br) on 2012-04-11T13:55:26Z No. of bitstreams: 1 Lord Of Hell Dissertacao.pdf: 12296595 bytes, checksum: ffa814f3eef44bba773fe722ed7b8e13 (MD5) / Made available in DSpace on 2012-04-11T13:55:26Z (GMT). No. of bitstreams: 1 Lord Of Hell Dissertacao.pdf: 12296595 bytes, checksum: ffa814f3eef44bba773fe722ed7b8e13 (MD5) Previous issue date: 2010 / Montes Claros é uma cidade na qual acontecem diversas manifestações musicais que são representativas do que seja pertencer a esse meio. Entretanto, cada uma possui maneiras peculiares de lidar com seu contexto, o que remarca produtos musicais e contextuais variantes de comunidade para comunidade. Dessa forma, pode-se dizer que o meio do rock montesclarense é um agregado de pessoas que tem uma visão cultural comum, o que remete assim a um meio musical específico. Mas, ao contrário do que possa se pensar, o próprio contexto roqueiro é multifacetado em suas estruturas internas, ao mesmo tempo em que possui um discurso que aparenta homogeneidade, unificação. Há diversos discursos que permeiam o universo do rock em Montes Claros e pode-se dizer que o metal é uma das suas comunidades mais prolíficas, apesar de parcialmente segmentada. Surgida no contexto da cidade em meados dos anos 1990 – na cena roqueira que se articula desde finais da década de 1950 – o metal gerou uma cena rica em bandas, públicos e eventos. Considerar, então, uma banda desse meio como foco de estudo é vislumbrar as principais características que permeiam as concepções dessa cena. Este estudo aborda os principais aspectos performáticos, estilísticos e estéticos musicais da banda Vomer, atuante em Montes Claros desde 1995. Acredita-se que suas práticas musicais – que vão além do mero “tocar” – são repletas de elementos que integram o discurso metaleiro da cidade, práticas essas que são formadas por diversos processos. Esses tangem desde o consumo de materiais musicais oriundos do mainstream, ressignificados numa prática underground – o que também implica que o metal em Montes Claros é uma prática mundializada expressa no viés local –, até a sua relação com a cena musical alternativa e independente que se estabelece na cidade, além das relações sociais que afirmam, negam, enfim, negociam as concepções musicais e extramusicais da Vomer, tudo isso expresso no momento da performance. Pode-se dizer que através da performance se estabelece uma crítica cultural que mantém ou transforma a visão musical da banda. Não apenas os shows ao vivo são performances, mas também os ensaios e gravações são momentos dinâmicos de construção e negociação do que seja a Vomer. / Salvador

No description available.

Electrical, forming and switching characteristics of metal-semiconductor-metal (MSM) memory switches of ion bombarded hydrogenated amorphous silicon (a-Si:H) and its alloys are presented. MSM devices for memory switching applications are known to be characterised by instabilities as well as non-uniformity and irreproducibility of the forming and switching characteristics. It is believed that the presence of defect states in the semiconductor layer plays a significant role in the observation of memory switching in these MSM devices. Gas-phase doping and current stressing of the semiconductor are some of the techniques that have been used in the past to introduce mid-gap defect states. In this work, we use for the first time, ion bombardment as a novel tool for defect introduction into the semiconductor material of the MSM devices and we compare the electrical, forming and switching characteristics of these devices to those fabricated using the previous techniques mentioned above. A significant observation is that as the density of defects is increased in the semiconductor film with increasing implantation dose, conduction in the devices changes from barrier-controlled thermionic emission to bulk controlled where carriers hop through the defect states in a Poole-Frenkel manner. This transformation eliminates problems associated with Schottky barriers such as quality of contacts, oxidation, etc. In the forming characteristics, not only do we report enhanced uniformity of the forming voltages (VF) but also the magnitude of VF is observed to vary systematically with the implantation dose used. The ON states and switching characteristics in the bombarded devices are also observed to be much more stable presumably as a result of the uniformity of the defects introduced by ion bombardment. We report also an enhanced switching ratio in the ion bombarded devices, especially after partial annealing of the bombardment induced Si dangling bond defects.

No description available.

Metal-on-metal (MM) bearings have been considered as an alternative to conventional metal-on-polyethylene (MPE) bearings because of their lower volumetric wear, but concern exists due to potential metal hypersensitivity. Metal hypersensitivity reactions have been thought to be T cell-mediated delayed type hypersensitivity (DTH) reaction. However some of the MM periprosthetic tissues show the presence of B- and plasma cells, as well as massive fibrin exudation, which are not characteristic of a DTH reaction. Therefore, the exact nature of the hypersensitivity reaction(s) MM implants remains unclear. The present study aimed to compare the phenotypes of lymphocytes from the peripheral blood and synovial fluid of patients with failed MM and MPE implants, and from volunteers with no implant (peripheral blood only). Results in peripheral blood showed differences in the T-cell populations depending on the implant type. This included differences in the proportions of T-helper and T-cytotoxic cells, and T-cells expressing IFN-g. Results in synovial fluid showed a significant difference between MM and MPE groups for the B-cells. Both groups depicted a predominance of T-cell lymphocytes in synovial fluid and overall larger proportions of memory cells than in peripheral blood, but group sizes were rather small. Overall, T-cell cytokine expression (analyzed in peripheral blood only because of the limited number of synovial fluid samples) did not exhibit characteristics of a DTH reaction and the proportions of memory lymphocytes did not indicate activation of a specific subset in the MM group. Nevertheless, group sizes still remain to be increased.