Thesis (Ph. D.)--University of Hong Kong, 1993.

Thesis (Ph. D.)--University of Hong Kong, 1994. / Includes bibliographical references (leaves 485-487) and copies of author's publications.

Thesis (M. Sc.)--University of Hong Kong, 1995. / Includes bibliographical references (leaves 94-96).

Thesis (M.S.)--University of Tennessee, Knoxville, 2008. / Title from title page screen (viewed on Sept. 15, 2009). Thesis advisor: Atul Sheth. Vita. Includes bibliographical references.

Thesis (PhD.(Chemistry)--University of Pretoria, 2008. / On title page: Submitted in partial fulfilment of the degree Philosophiae Doctor in Chemistry in the faculty of Natural and Agricultural Sciences of the University of Pretoria. Includes bibliographical index.

Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

Thesis (Ph.D)--Chemistry and Biochemistry, Georgia Institute of Technology, 2010. / Committee Chair: Ragauskas, Arthur; Committee Member: Bunz, Uwe; Committee Member: Deng, Yulin; Committee Member: Singh, Preet; Committee Member: Soper, Jake. Part of the SMARTech Electronic Thesis and Dissertation Collection.

Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains vii, 75 p. : ill. Includes abstract. Includes bibliographical references (p. 50-51).

Orientador: Wanderley José de Melo / Banca: Gilberto Aparecido Rodrigues / Banca: Diego Silva Siqueira / Resumo: A densa floresta tropical de clima quente e úmido, de solos ácidos e de pouca fertilidade, é possuidor de faixas de terras escuras conhecidas como Terra Preta de Índio (TPI), formadas pela ação antropogênica dos homens que ali habitavam. A TPI fora formada pelo depósito nas circunvizinhanças dos resíduos produzidos no dia a dia da população. Esses resíduos continham restos vegetais, animal, cacos de cerâmica e além de muito material orgânico na forma de carvão originário da queima no preparo e manejo de áreas para o plantio e fogueiras utilizadas para o preparo da alimentação. Esses resíduos disposto ao solo amazônico, interagiram-se e modificaram o solo elevando demasiadamente sua fertilidade com considerável aporte de Ca, Mg, Zn, Mn, P e C. A comunidade cientifica mundial acredita ser principalmente a presença do carvão vegetal no solo (biochar), o principal elemento responsável pela grande melhoria de fertilidade. / Abstract: The dense rainforest of hot and humid climates, with acidic soils and low fertility, possesses dark lands known as Terra Preta de Índio (TPI), formed by the anthropogenic action of the men who lived there. The TPI was formed by the deposit in the surroundings of the waste produced in the day to day of the population. These residues contained plant remains, animal remains, pottery chips and a lot of organic material in the form of charcoal from the burning for preparation and management of areas for planting and bonfires used to prepare food. These residues, disposed to the Amazonian soil, have been interacted with and modified the soil by elevating their fertility with considerable contribution of Ca, Mg, Zn, Mn, P and C. The world scientific community believes mainly the presence of charcoal in the soil (biochar ), The main element responsible for the great improvement of fertility. / Mestre

Orientador: Steven Frederick Durrant / Banca: Sandro Donnini Mancini / Banca: José Antonio Milito / Resumo: Dentre as diversas maneiras de se obter energia limpa, a energia eólica é o setor que esta em grande expansão, pois apresentou no Brasil, em 2015 um crescimento de 77,1% em comparação ao ano de 2014. Este crescimento acelerado traz juntamente uma enorme quantidade de resíduos gerados no processo de fabricação dos conjuntos geradores de energia. Um dos componentes dos conjuntos geradores é a pá eólica, confeccionada basicamente de uma estrutura, envolta por resina epóxi, fibra de vidro, madeira e cola. Uma empresa localizada na cidade de Sorocaba, fabricante de pás eólicas, têm capacidade de produção de 200 pás/mês que gera uma quantidade considerável de resíduos. Este trabalho visa incorporar a resina epóxi misturada com fibra de vidro, que é um resíduo gerado na produção das pás eólicas, em argamassa fabricada com cimento Portland CPII F32, com o objetivo de utilizar o resíduo substituindo parcialmente a areia empregada, pois desta forma há possibilidade de redução do descarte em aterros, e também diminuição da utilização de recursos naturais. Inicialmente o resíduo coletado na forma sólida, foi transformado em pó através do processo de torneamento, este pó foi caracterizado pelas técnicas de ângulo de contato, massa específica, teor de inorgânicos, granulometria, Difração de Raios X (DRX), Microscopia Eletrônica de Varredura (MEV) e Espectroscopia de Raios X por Dispersão em Energia (EDS). Posterior às caracterizações, foram confeccionados corpos de prova cimentícios com di... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Among the various ways to obtain clean energy, wind power has been growing rapidly. In Brazil, the use of wind power grew 77.1% in 2015 compared with the previous year. This growth results in an enormous additional amount of residue produced during the manufacture of wind power generators. Wind turbine blades, which play an important role in the whole system, are made of a structure covered with epoxy resin, fiberglass, wood and glue. A company that manufactures wind power generators located in Sorocaba can produce up to 200 wind blades per month, which produces a considerable amount of residue. This project aims to incorporate epoxy resin together with fiberglass, which is also used in the production of such blades, into mortar made with Portland CPII F32 cement; that is to substitute residue for part of the sand used in this process, so that the quantity of residue (waste) can be reduced, and consequently also reduce the use of natural resources. Initially, this residue was collected in its solid form, and then turned into powder using the turning process for milling. This powder was characterized by contact angle and specific mass measurements, determination of inorganic elements, granulometry, X-ray diffraction, Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). After the characterizations, some cement specimens were made with different quantities of residue substituting the sand, as well as a specimen (CP) without any substitution. Tests were then carried out, including resistance to bending traction and compression; determination of water absorption, void indices and of specific mass. The specimens showed positive results, having passed the mechanical resistance test (8MPa), when residue substituted up to 15% of the sand was substituted. In addition, the tests showed that the specific mass was also reduced, making... (Complete abstract electronic access below) / Mestre