Luís Portugal

Petrobras (Brazil) — Brazil

Mathematics · Physical Sciences

9h-index278citations24works0.02yr avg
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Research Topics

Advanced Optimization Algorithms Research(4), Graphite, nuclear technology, radiation studies(4), Radiation Detection and Scintillator Technologies(3), Nuclear Physics and Applications(3), Robotics and Sensor-Based Localization(2)

Publications24 total

A New Method for Torque and Drag Retro-Analysis to Obtain Accuracy to Compute the Friction Factor for Wells in Severe Drilling Scenarios of Pre-Salt Fields
Offshore Technology Conference Brasil·2023
Portfolio Claims Reserving With Univariate and Multivariate Generalized Link Ratios
SSRN Electronic Journal·2022Open Access
Understanding the Protests in Bolivia and Chile
2019
Rede de Vigilância em Contínuo da Radioatividade do Ambiente (RADNET)
Revista Recursos Hídricos·2017
Sediment Sampling in Estuarine Mudflats with an Aerial-Ground Robotic Team
Sensors·2016· 15 citedOpen Access
Study of the response of an ORTEC GMX45 HPGe detector with a multi-radionuclide volume source using Monte Carlo simulations
Applied Radiation and Isotopes·2016· 11 cited
An Aerial-Ground Robotic Team for Systematic Soil and Biota Sampling in Estuarine Mudflats
Advances in intelligent systems and computing·2015· 8 cited
Characterization of a Radionuclide Specific Laboratory Detection System for the Metallurgical Industry
2014· 2 cited
Full characterization of the<sup>125</sup>I IBt Bebig I25.S16 brachytherapy source and sensitivity study of the absorbed dose to water due to the seed dimensional variations
Metrologia·2012· 2 cited
Monte Carlo validation of the irradiator parameters of the Portuguese gamma irradiation facility after its replenishment
Applied Radiation and Isotopes·2009· 10 cited
Fortran subroutines for network flow optimization using an interior point algorithm
Pesquisa Operacional·2008· 9 citedOpen Access
A methodology for the determination of the radionuclide contents and activity of samples
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment·2007· 1 cited
Interim storage of spent and disused sealed sources: optimisation of external dose distribution in waste grids using the MCNPX code
Radiation Protection Dosimetry·2005· 1 cited
A Study of Preconditioners for Network Interior Point Methods
Computational Optimization and Applications·2003· 25 cited
Technical modification for composite grafts in myocardial revascularization surgery
Brazilian Journal of Cardiovascular Surgery·2002· 1 citedOpen Access
Postoperative necrotizing fasciitis of the thorax in cardiac surgery
Arquivos Brasileiros de Cardiologia·2001· 13 citedOpen Access
Fasceíte Necrotizante do Tórax em Pós-Operatório de Cirurgia Cardíaca
Arquivos Brasileiros de Cardiologia·2001Open Access
A truncated primal-infeasible dual-feasible network interior point method
Networks·2000· 76 cited
Dose mapping of dried figs treated by gamma radiation
Radiation Physics and Chemistry·1998· 2 cited
An Investigation of Interior-Point Algorithms for the Linear Transportation Problem
SIAM Journal on Scientific Computing·1996· 23 cited
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Frequent Co-authors

Joaquím J. Júdice(5), C. Oliveira(5), Maurício G. C. Resende(3), Geraldo Veiga(3), de Paiva(3), João Patrício(2), Pedro Deusdado(2), Magno Guedes(2), André Silva(2), Francisco Marques(2), Eduardo Pinto(2), Paulo Rodrigues(2), André Lourenço(2), Ricardo Mendonça(2), Pedro Santana(2), José Corisco(2), Raquel Caldeira(2), José Barata(2), Luís Flores(2), José Dario Frota Filho(2)