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Mostrando ítems 101-110 de 110
Produtividade e Valor nutritivo de Urochloa brizantha cv. Piatã e Qualidade do Solo em Sistemas Silvipastoris na Região Central de Minas Gerais
(Universidade Federal de Minas GeraisUFMG, 2018-02-27)
The presence of trees in silvopastoral systems (SPS) can affect forage production, structural, characteristics bromatological and environmental sustainability in these systems. The objective of this study was to evaluate ...
Análise vibracional e de transições de fase em dielétricos ferróicos e de baixa simetria
(Universidade Federal de Minas GeraisUFMG, 2015-03-27)
Under the scope of this thesis, it was proposed the investigation of the vibrational properties, through Raman and infrared (IR) spectroscopies, and of the phase transitions in three crystal systems, namely: single crystal ...
Estudos in vitro e in vivo de lipossomas contendo gadolínio-159 para o tratamento do câncer
(Universidade Federal de Minas GeraisUFMG, 2011-02-18)
In Brazil, estimates of new cancer cases, valid for the years 2010 and 2011 show that the disease will be responsible for the deaths of about 500,000 people. As an alternative therapythe radiotherapy technique, widely used ...
Fungos em rochas de ecossistemas extremos: taxonomia, diversidade, bioprospecção de metabólitos bioativos e uso como modelos em estudo de astrobiologia
(Universidade Federal de Minas GeraisUFMG, 2015-04-22)
Some ecosystems are known as extreme due to different characteristics from those found in environments where most organisms are able to survive. Life in these ecosystems is often dominated by microorganisms, which are ...
Modelo de Braquiterapia com balão de pertecnetato de sódio-99mTc(Na99mTcO4-) para câncer de mama: avaliação da dosimetria e resposta celular
(Universidade Federal de Minas GeraisUFMG, 2016-03-31)
Breast cancer is the most common type of cancer that affects more women worldwide. Among various treatment options, radiotherapy which is often used as a treatment for locoregional recurrences control or to decrease tumor ...
Sistemas híbridos formados por nanobastões de ouro e porfirinas: fotossensibilizadores promissores para terapia fotodinâmica
(Universidade Federal de Minas GeraisUFMG, 2018-07-11)
Gold nanostructures, spheres and rods, were synthesized to form a hybrid system with porphyrin H2TM4PyP(OTs)4 (POR) for application in photodynamic therapy (PDT) using light in the visible and near UV (UVA) spectral region. ...
Síntese hidrotermal de catalisadores nanoestruturados de nióbio aplicados na conversão de frutose, glicose, glicerina e na degradação de contaminantes orgânicos
(Universidade Federal de Minas GeraisUFMG, 2017-08-18)
This work reports the synthesis of two new classes of catalysts based on niobium and their application in both the conversion of molecules from biomass and the oxidation of organic contaminants. The first class was synthesized ...
Sistemas redox reversíveis Fe°/óxido de ferro para produção de hidrogênio
(Universidade Federal de Minas GeraisUFMG, 2010-08-10)
Hydrogen is the fuel of future, due to its energetic efficiency and the environmental aspects. The most important current challenges are to develop efficient methods to produce hydrogen and find safe, simple and low cost ...
Equações algébricas, máxima absorção ressonante em espectroscopia Mössbauer, problemas diretos e inversos em espalhamento de partículas e problema inverso em dinâmica.
(Universidade Federal de Minas GeraisUFMG, 2014-04-14)
In Chapter 1, begins the study of algebraic equations, more specifically of cubic equations. The chapter begins with a brief historical introduction which illustrates the challenges faced by mathematicians to reach a ...
Estudo de complexos envolvendo íons lantanídeos trivalentes e ligantes orgânicos, utilizando espectroscopias de aniquilação de pósitrons e óptica
(Universidade Federal de Minas GeraisUFMG, 2013-06-06)
This work investigated the formation of positronium (Ps) in the isolated complexes Sm(dpm)3, Eu(dpm)3, Gd(dpm)3, Tb(dpm)3, Ho(dpm)3, Er(dpm)3, and Yb(dpm)3, where dpm corresponds to the 2,2,6,6-tetramethyl-3-5-heptanedionate ...