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Now showing items 151-160 of 338
Otimização do controle de Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) por meio do parasitoide Cotesia flavipes (Cameron, 1891) (Hymenoptera: Braconidae) visando a redução de custos
(Universidade Federal de São Carlos, 2018-03-26)
Brazil is the world’s largest producer of sugarcane. However, this agricultural crop
is attacked by pests, especially Diatraea saccharalis. Its control in Brazil is carried out
mainly by the action of the caterpillar ...
Transporte eletrônico em nanofios de SnO2 dopado com Sb: transição metal-isolante induzida pela dopagem e fotocondutividade persistente
(Universidade Federal de São Carlos, 2019-03-15)
In this work we studied the structural, optical and electronic transport properties of intrinsic and doped SnO2 nanowires with different concentrations of antimony (Sb) grown by the Vapor-Liquid-Solid mechanism (VLS). ...
Propriedades de sistemas de pontos quânticos semicondutores acoplados e sua resposta óptica
(Universidade Federal de São Carlos, 2017-10-31)
The study of doped semiconductor quantum dots with magnetic impurities has been a challenging task when adding spin-orbit coupling and exchange interaction with asymmetry effects. The combination of all these factors within ...
Electronic and optical properties of Quasi-2D nanostructures and exfoliated systems
(Universidade Federal de São Carlos, 2017-10-30)
This thesis is aiming to study, according to a theoretical approaches, the electronic and optical properties of quasi-2D semiconductor quantum systems. Using the k · p model as basis we obtained a satisfactory set of results ...
Emaranhamento intrínseco em sistemas tipo-Dirac
(Universidade Federal de São Carlos, 2018-03-06)
Dirac equation is supported by a $SU(2) \otimes SU(2)$ group structure, such that its solutions describe two discrete degrees of freedom, intrinsic parity and spin, which in general are entangled. In this work we will ...
Termodinâmica de buracos negros de Schwarzschild
(Universidade Federal de São Carlos, 2018-05-28)
This dissertation consists of a review about some aspects of Schwarzschild black hole thermodynamics and includes a discussion related to the temporal evolution of the masses of these black holes in a thermodynamic context. ...
Modos massivos e paredes de domínio em líquidos de Fermi
(Universidade Federal de São Carlos, 2018-06-11)
In this thesis, we use Fermi liquid theory to deal with three problems. The first and second problems are about a direct and an indirect detection of the amplitude massive ‘‘Higgs’’ mode in weak ferromagnets like ZrZand M ...
Estudos de vidros fluoroboratos e fluorogermanatos de chumbo, através de técnicas de espectroscopia óptica e de ressonância magnética
(Universidade Federal de São Carlos, 2018-12-04)
In this work two studies on rare earth−doped (Eu3+, Yb3+) lead fluorogermanate (GeO2−PbO−PbF2) and fluoroborate glasses (B2O3 −PbO −PbF2) were investigated. The main advantages of these glasses are their chemical stability ...
Influência do tamanho médio de grão nas propriedades ferroicas de compósitos magnetoelétricos particulados
(Universidade Federal de São Carlos, 2016-04-08)
In the case of composites materials, which presents the magnetoelectric coupling,
there are so many questions about the influence of the microstructure on the coupled
and uncoupled properties. Thereby, this work proposes ...
Matrizes de reflexão com simetria 𝒰𝑞 [osp(2|2𝑚)(2)]
(Universidade Federal de São Carlos, 2012-03-16)
In this thesis we present solutions of the graded boundary YANG-BAXTER equations for vertex models with 𝒰𝑞 [osp(2|2𝑚)(2)] symmethy.