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Voltammetric characterization of stepped platinum single crystal surfaces vicinal to the (110) pole
(ELSEVIER SCIENCE INC, 2009)
Platinum stepped surfaces vicinal to the (1 1 0) crystallographic pole have been investigated voltammetrically in 0.1 M HClO(4) and 0.1 M H(2)SO(4) solutions. Changes in the voltammetric profile with the step density suggest ...
Effect of a cylindrical thin-shell of matter on the electrostatic self-force on a charge
(Springer, 2016-02)
The electrostatic self-force on a point charge in cylindrical thin-shell space-times is interpreted as the sum of a bulk field and a shell field. The bulk part corresponds to a field sourced by the test charge placed in a ...
Effect of the potential on the electrochemically induced ageing of polyaniline films
(Elsevier Science Sa, 2012-03)
The electrochemically induced ageing of polyaniline films, as a function of the ageing potential, was investigated employing films of different thicknesses in 3.7 M H2SO4 solutions. The ageing process was monitored by the ...
Nitrate reduction on Pt single crystals with Pd multilayer
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
Nitrate reduction on palladium multilayers deposited on platinum single crystal electrodes was studied by cyclic voltammetry and FTIR spectroscopy in acid and alkaline media. The results are compared with those obtained ...
The violation of the Hund rule in semiconductor artificial atoms
(2004)
The unrestricted Pople–Nesbet approach for real atoms is adapted to quantum dots under applied magnetic field. Gaussian basis sets are used instead of the exact single-particle orbitals in the construction of the appropriated ...
Restricted and unrestricted Hartree–Fock approaches applied to spherical quantum dots in a magnetic field
(2006)
The Roothaan and Pople–Nesbet approaches for real atoms are adapted to quantum dots in the presence of a magnetic field. Single-particle Gaussian basis sets are constructed, for each dot radius, under the condition of ...
Experimental characterization and numerical modeling of total ionizing dose effects on field oxide MOS dosimeters
(Pergamon-Elsevier Science Ltd, 2021-05)
The response of MOS dosimeters fabricated using field oxide as gate insulator was characterized measuring the threshold voltage shift with absorbed dose. Sensitivity for different applied bias and threshold voltage evolution ...
Aplicabilidade de dispositivos de expansão de ação variável em refrigeradores domésticos
(2019.)
O presente trabalho teve como objetivo investigar a aplicabilidade de válvulas de expansão eletrônicas (EEVs) em sistemas domésticos de refrigeração. Primeiramente, testes com nitrogênio foram realizados para avaliar o ...
Avaliação da adsorção/dessorção de corante têxtil em bagaço de malte
(Universidade Tecnológica Federal do ParanáToledoBrasilTecnologia em Processos QuímicosUTFPR, 2018-06-20)
The textile industry grows every year and deserves special attention due to the large quantity of generated effluents, containing dyes, which are not fixed in the fibers. Pollution, due to dyeing, represents 30 to 40% of ...