Teses: Recent submissions

  • SILVA, Alex Takeo Yasumura Lima; Lattes: http://lattes.cnpq.br/8256163636370312 (Universidade Federal de ItajubáBrasilIRN - Instituto de Recursos NaturaisPrograma de Pós-Graduação: Doutorado - Meio Ambiente e Recursos HídricosUNIFEI, 2023-02-15)
    The scarcity of natural resources, especially water and energy, put the population at risk of water supply. Therefore, they become necessary procedures to guarantee the optimal operation of a water distribution network. ...
  • FONSECA, Karine Bolaños da; http://lattes.cnpq.br/4559505598689709 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2022-11-18)
    This work presents a study on the magneto-transport properties of nanostructures based on Bi2Te3 and PbTe, both narrow gap semiconductors. Electrical transport in a n-type PbTe quantum well was investigated using light ...
  • RICCI, José Eugênio Rios; http://lattes.cnpq.br/5718165836447171 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2002-09-20)
    The aim of this work is to simulate numerically the two-dimensional, incompressible, unsteady flow around a body of arbitrary shape in the presence of a ground plane. The fluid is Newtonian, with constant properties. ...
  • PIRANI, Marcelo José (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2003-03-18)
    By using the finite volume method and SOLA algorithm, the study of turbulent twodimensional flow in a toroidal regenerative turbomachine is carried out. The equations representing the movement in cartesian coordinates ...
  • PETRUCCI, Denis Rinaldi; http://lattes.cnpq.br/1984194112324472 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2003-05-21)
    In this work, two inverse methods for isolated airfoil and turbomachinery cascades design are presented. The first method is based on an iterative correction algorithm with an efficient panel technique for potential flow ...
  • HONÓRIO, Leonardo de Mello; http://lattes.cnpq.br/4319412527458142 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2002-03-07)
    This thesis studies three topics related to voltage collapse: Load margin increase, load shedding and sensitivity analysis. For each study, optimization techniques are employed. For load margin increase, a new strategy ...
  • CARDOZO, Ricardo Francisco Alonso; http://lattes.cnpq.br/0077843946526379 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2022-12-09)
    Resilience of electrical power systems is a paradigm that has been studied in order to provide continuity to the electrical energy service during the interruption of the main source. This leads to the need to use the ...
  • ALBUQUERQUE, Carlos Alberto de; http://lattes.cnpq.br/5006817155432360 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2021-12-10)
    Among the main concerns with environmental issues, this present work highlights two. The first is with the residue of the non-metallic fraction of the printed circuit board (PCB). This residue, despite having one of the ...
  • DIAS, João Batista; 999 999 999 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2002-12-20)
    In this work, the finite element method using triangular elements and the Galerkin formulation is used to study the mixed convection heat transfer in horizontal and vertical ducts. The flow is considered two-dimensional, ...
  • LAMOGLIA, Marcela Silva; http://lattes.cnpq.br/3977586720362047 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2022-10-21)
    The knowledge regarding balance phases of Al-Fe-Nb system, and the understanding of its microstructures, are important for development of several families of alloys, such as niobium-based super-alloys for use in high ...
  • XAVIER, Yasmin Silva Martins; http://lattes.cnpq.br/4275575319517353 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Doutorado - Engenharia de ProduçãoUNIFEI, 2022-12-14)
    Considering its potential for innovation and the large number of micro and small businesses, the medical device sector has become a relevant object of study. Due to the characteristics of their activities, companies are ...
  • ALVES, Fábio Junior; http://lattes.cnpq.br/0867346347291204 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2022-12-08)
    Autism Spectrum Disorder (ASD) is a neurodevelopmental condition that affects about 1-2% of the global population and leads to long-term challenges in the daily social lives of individuals with the disability. Based ...
  • VASCONCELOS, Angela de Jesus; http://lattes.cnpq.br/5691233602614707 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2022-08-23)
  • CAMPOS, Afonso Teberga; http://lattes.cnpq.br/9315669124096584 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Mestrado - Engenharia de ProduçãoUNIFEI, 2022-08-31)
    In general, stochastic simulation consists of input data and logic, the former being the basic source of uncertainty in a simulation model. For this reason, data modeling is an essential step in the development of ...
  • CHAGAS, Guilherme Souto; http://lattes.cnpq.br/0586763522925200 (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2022-08-24)
    The power flow problem is composed of phasor variables and quantities and thus can be naturally formulated in the complex domain; however, their applications are commonly developed in the real domain. The solution via ...
  • TORRES, Samanta de Oliveira Alves; http://lattes.cnpq.br/9595396625983771 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Materiais para EngenhariaUNIFEI, 2022-10-07)
    The thermoelectric materials have been very investigated due to its capacity to direct conversion of thermal energy into electrical energy, focusing on the search for materials that have high values of Figure of Merit (ZT), ...
  • SILVA JÚNIOR, João Ider; http://lattes.cnpq.br/4908045776059662 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Doutorado - Ciência e Engenharia de MateriaisUNIFEI, 2022-07-22)
    This work presents a complete study of thermoelectric materials. It starts with a study of a Solar Concentrator and the development of a Genetic Algorithm and Cross-Entropy for analyzing experimental data. Contains a ...
  • ÂNGULO, Tania Marie Arispe; http://lattes.cnpq.br/5463485164813466 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2022-07-28)
    The study and analysis of the sound generated by flows has become increasingly important in several areas of the industry, from household appliances to aeronautical propulsion systems. A particular case is the noise generated ...
  • LOPES, Benedito Isaias de Lima (Universidade Federal de ItajubáBrasilIESTI - Instituto de Engenharia de Sistemas e Tecnologia da InformaçãoPrograma de Pós-Graduação: Doutorado - Engenharia ElétricaUNIFEI, 2004-12-21)
    This thesis discusses the problem of stability in power systems. Some aspects related to power systems dynamics are brie y described, including appendices associated with electric machines theory and numerical methods. The ...
  • TEIXEIRA, Flávio Neves; http://lattes.cnpq.br/3394102440882769 (Universidade Federal de ItajubáBrasilIEM - Instituto de Engenharia MecânicaPrograma de Pós-Graduação: Doutorado - Engenharia MecânicaUNIFEI, 2005-03-18)
    This work presents a characterization of the nitrogen oxides and particulate matter formation and emission, based in the literature, as well in measured date of Brazilian bagasse boilers, and in these cases, it evaluate ...