RSS 1.0Departamento de Matemática
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Oxidative dehydrogenation of ethylbenzene to styrene over the CoFe2O4-MCM-41 catalyst: Preferential adsorption on the O2-Fe3+O2- sites located at octahedral positions
; ; ; ; ; Sambrano, Julio Ricardo
; ; ; (Catalysis Science and Technology, 2019) [Artigo]
The present study describes the catalytic performance of cobalt ferrite supported on MCM-41 for the oxidative dehydrogenation of ethylbenzene. The catalytic activity of cobalt ferrite was compared with that of the traditional ... -
Effect of a resin-modified glass-ionomer with calcium on enamel demineralization inhibition: An in vitro study
; ; Brondino, Nair Cristina Margarido; ; ; ; (Brazilian Oral Research, 2019) [Artigo]
We assessed the effect of a new coating material based on resin-modified glass-ionomer with calcium (Ca) in inhibiting the demineralization of underlying and adjacent areas surrounding caries-like lesions in enamel. The ... -
Proposal and Solution of a Mixed-Integer Nonlinear Optimization Model That Incorporates Future Preparedness for Project Portfolio Selection
(IEEE Transactions on Engineering Management, 2019) [Artigo]In the context of project management, the attention given to project portfolio management has increased in recent years. The use of mathematical programming for portfolio management is also on the rise, because it integrates ... -
A methodology to determine size and shape of plots for sugarcane plantation
Chem, Adriana Cristina; Goncalves Vianna, Andrea Carla ; Ramos, Romulo Pimentel ; Fiorentino, Helenice de Oliveira (Scientia Agricola, 2019) [Artigo]
Brazil is the largest sugarcane producer in the world and the leader in the production of sugar and ethanol. Although sugarcane has become an important factor in the Brazilian economy, cultivation has presented many issues, ... -
PARAMETRIZATION FOR A CLASS OF RAUZY FRACTALS
Bastos, J.; Rodrigues de Souza, T. (Osaka Journal Of Mathematics, 2019) [Artigo]
In this paper, we study a class of Rauzy fractals R-a given by the polynomial x(3) - ax(2) + x - 1 where a >= 2 is an integer. In particular, we give explicitly an automaton that generates the boundary of R-a and using an ... -
Interior/exterior-point methods with inertia correction strategy for solving optimal reactive power flow problems with discrete variables
Tófoli, Marielena Fonseca; Soler, Edilaine Martins ; Balbo, Antonio Roberto ; Baptista, Edméa Cássia ; Nepomuceno, Leonardo (Annals of Operations Research, 2018) [Artigo]
Interior/exterior-point methods have been widely used for solving Optimal Reactive Power Flow problems (ORPF). However, the utilization of such methods becomes difficult when transformer taps and/or capacitor/reactor banks ... -
A quantum-mechanical investigation of oxygen vacancies and copper doping in the orthorhombic CaSnO3 perovskite
Maul, Jefferson; ; Sambrano, Julio Ricardo ; ; (Physical Chemistry Chemical Physics, 2018) [Artigo]
In this study we explore the implications of oxygen vacancy formation and of copper doping in the orthorhombic CaSnO3 perovskite, by means of density functional theory, focusing on energetic and electronic properties. In ... -
Peirce's primary arithmetics: A brief presentation and some remarks on the translation of these manuscripts to Portuguese
Garnica, Antonio Vicente Marafioti; De Souza, Leandro Josué ; Salandim, Maria Ednéia Martins (Bolema - Mathematics Education Bulletin, 2018) [Artigo]
This paper aimsto present the five manuscripts of the so-called Peirce's Primary Arithmetics(Lydia Peirce's Primary Arithmetic; Primary Arithmetic (with suggestions to teachers); Peirce's Primary Arithmetic upon the ... -
Hydrothermal synthesis, structural characterization and photocatalytic properties of β-Ag2MoO4 microcrystals: Correlation between experimental and theoretical data
; ; ; Sambrano, Julio Ricardo; ; ; ; ; ; et al. (Arabian Journal of Chemistry, 2018) [Artigo]
In this paper, we report about hydrothermal synthesis, structural characterization and photocatalytic properties of beta-silver molybdate (β-Ag2MoO4) microcrystals obtained at different temperatures (100, 120, 140 and 160 ... -
Conducting behavior of crystalline a-PbO2 as revealed by DFT calculations
Cordeiro, João Manuel Marques; de Azevedo, Douglas Henrique Marcelino ; Barretto, Tatiana Conceição Machado ; Sambrano, Julio Ricardo (Materials Research, 2018) [Artigo]
PbO2 is one material that has recently emerged as potential transparent conducting oxide for applications in the modern opto-electronic industry. In this work the electronic structure of the a-PbO2 polymorph has been ... -
Wannier functions and the calculation of localized modes in one-dimensional photonic crystals
Romano, Maria C.; Vellasco-Gomes, Arianne ; Bruno-Alfonso, Alexys (Journal of the Optical Society of America B: Optical Physics, 2018) [Artigo]
The localized modes of a layered photonic crystal with a substitutional defect are calculated by expanding the magnetic field over a truncated set of Wannier functions. Good agreement is found with the results obtained by ... -
Editorial
Garnica, Antonio Vicente Marafioti; Maltempi, Marcus Vinicius ; Miarka, Roger (Bolema - Mathematics Education Bulletin, 2017) [Editorial]
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Sustainable operations: The cutting stock problem with usable leftovers from a sustainable perspective
Coelho, Karen Rocha; Cherri, Adriana Cristina ; Baptista, Edméa Cassia ; ; Soler, Edilaine Martins (Journal of Cleaner Production, 2018) [Artigo]
This paper proposes a mathematical model and two heuristic procedures to solve the cutting stock problem with usable leftovers, relating the implications of the model with aspects considering sustainability in terms of ... -
Computational simulations of morphological transformations by surface structures: The case of rutile TiO2 phase
De Aquino Barbosa, Matheus; Da Silva Lopes Fabris, Guilherme ; Ferrer, Mateus Meneghetti ; De Azevedo, Douglas Henrique Marcelino ; Sambrano, Julio Ricardo (Materials Research, 2017) [Artigo]
Computational simulations based on periodic density functional theory have been carried out to investigate the control of crystal morphology by accurate values of surface energies by Wulff theorem. This method can be used ... -
A Modified Barrier and Barrier Method and the Optimal Power Flow Problem
Delgado, Jessica Antonio; Baptista, Edmea Cassia ; Bregadioli, Gabriela Fernanda ; Nepomuceno, Leonardo ; Balbo, Antonio Roberto ; Soler, Edilaine Martins (IEEE Latin America Transactions, 2017) [Artigo]
This work proposes an approach that uses a union of methods based on logarithmic barrier function and modified logarithmic barrier function for the resolution of the reactive optimal power flow problem. In this proposed ... -
Mixed-integer nonlinear model for multiproduct inventory systems with interior point and branch-And-bound method
Lourencao, Alvaro Martino; Baptista, Edmea Cassia ; Soler, Edilaine Martins ; Souza, Fernando Bernardi ; Cherri, Adriana Cristina (IEEE Latin America Transactions, 2017) [Artigo]
Inventory management can be considered as one of the main components of planning and production control. In the literature numerous mathematical models are presented for inventory management, which approach different aspects ... -
Piezoelectric, elastic, Infrared and Raman behavior of ZnO wurtzite under pressure from periodic DFT calculations
Marana, Naiara Letícia; ; Sambrano, Julio Ricardo (Chemical Physics, 2017) [Artigo]
The influence of pressure on elastic, piezoelectric (total and clamped-ion contribution), dielectric constants, Infrared and Raman spectra, and topological properties of ZnO wurtzite structure was carried out via periodic ... -
Azimuthal dependence of the Garton-Tomkins orbit in crossed magnetic and electric fields
; ; Bruno-Alfonso, A. (Physical Review A, 2016) [Artigo]
Work on classical closed orbits in the diamagnetic Kepler problem is predominately focused on the chaos observed in the polar launch angle as opposed to the azimuthal launch angle. This is due to atomic systems, along with ... -
Electric-field effects on the closed orbits of the diamagnetic Kepler problem
; Bruno-Alfonso, A.; (Physical Review A, 2016) [Artigo]
The nonrelativistic closed orbits of an electron interacting with a unit positive charge in the presence of homogeneous magnetic and electric fields are investigated. A simplified theoretical model is proposed utilizing ... -
Mostruário de Práticas: Considerações sobre a formação e a atuação de professores dos Anos Iniciais a partir das Feiras Catarinenses de Matemática
Da Silva, Viviane Clotilde; Garnica, Antônio Vicente Marafioti (Bolema - Mathematics Education Bulletin, 2015) [Resenha]
This research aims to present and analyze narratives that, as a whole, allowed assigning meaning to conceptions and practices related to the teaching and learning of mathematics in the elementary schooling system in the ...