17 documents found, page 1 of 2
Bacterial bioaugmentation for paracetamol removal from water and sewage sludge....
Lara-Moreno, A.; Vargas-Ordóñez, A.; Villaverde, J.; Madrid, F.; Carlier, Jorge; Santos, J. L.; Alonso, E.; Morillo, E.Wastewater treatment plants (WWTPs) are recognized as significant contributors of paracetamol (APAP) into the environment due to their limited ability to degrade it. This study used a bioaugmentation strategy with Pseudomonas extremaustralis CSW01 and Stutzerimonas stutzeri CSW02 to achieve APAP biodegradation in solution in wide ranges of temperature (10-40 °C) and pH (5-9), reaching DT values < 1.5 h to degra...
The performance of bank portfolio optimization
Coelho, C.; Santos, J. L.; Judice, P.Given a liability structure, the bank portfolio optimization determines an asset allocation that maximizes profit, subject to restrictions on Basel III ratios and credit, liquidity, and market risks. Bank allocation models have not been tested using historical data. Using an optimization model based on turnover constraints, we develop such tests, which document the superior performance of optimization strategie...
Bank strategic asset allocation under a unified risk measure
Judice, P.; Pinto, L.; Santos, J. L.Most available bank asset allocation models use several risk measures as constraints; as a consequence, the comparison of the risk between different asset allocation strategies is often difficult, since each strategy is subject to several risks. With this research, we create a simulation–optimization methodology that measures interest rate, credit and liquidity risks in a unified manner. The associated risk eve...
Diagnóstico da pneumonia enzoótica suína pela técnica da imunoperoxidase
Ribeiro, F. C.; Silva, J. C. P.; Santos, J. L.; Pontes, K. C. S.Avaliou-se a técnica da imunoperoxidase como método auxiliar para a detecção de Mycoplasma hyopneumoniae em suínos naturalmente infectados. Foram colhidos 80 fragmentos de pulmões de 40 animais provenientes de granjas consideradas negativas e 40 de granjas com diagnóstico positivo de pneumonia enzoótica. Com a utilização de soro policlonal específico (IgG de coelho anti- M. hyopneumoniae) observou-se correlação...
Zinc oxide coated optical fiber long period gratings for sensing of volatile or...
Coelho, L.; Viegas, D.; Santos, J. L.; Almeida, José Manuel Marques Martins deThe detection of volatile organic compounds is accomplished with a sensing device based on a long period fiber grating (LPFG) coated with a zinc oxide (ZnO) thin layer with self-temperature compensation. The ZnO coating structure was produced onto the cladding of the fiber by thermal oxidation of a metallic Zn thin film. The morphological characterization of ZnO thin films, grown at the same time on silicon sub...
Zinc oxide coated optical fiber long period gratings for sensing of volatile or...
Coelho, Luís Carlos Costa; Viegas, Diana; Santos, J. L.; Almeida, José Manuel Marques Martins deThe detection of volatile organic compounds is accomplished with a sensing device based on a long period fiber grating (LPFG) coated with a zinc oxide (ZnO) thin layer with self-temperature compensation. The ZnO coating structure was produced onto the cladding of the fiber by thermal oxidation of a metallic Zn thin film. The morphological characterization of ZnO thin films, grown at the same time on silicon sub...
Sensing Structure Based on Surface Plasmon Resonance in Chemically Etched Singl...
Coelho, L.; de Almeida, J. M. M. M.; Santos, J. L.; Ferreira, R. A. S.; Andre, P. S.; Viegas, D.Many optical systems based on surface plasmon resonance (SPR) have been developed for working as refractometers, chemical sensors or even for measuring the thickness of metal and dielectric thin films. Sensors based on SPR present very high sensitivity to refractive index (RI) variations when compared to the traditional RI sensors. However, these kinds of systems are usually large, expensive and therefore canno...
Prevalence of hip and lower limb fracture in the city of Aracaju, Brazil
Marçal, Anderson Carlos; Dantas, R. E. A.; Santos, D. M.; Camporez, J. P. G.; Garcia, R. A. P.; Estevam, Charles dos Santos; Santos, J. L.Objectives: To analyse the prevalence of hip and lower limb fracture in the city of Aracaju (Sergipe) using data from the Fundação de Beneficência Hospital de Cirurgia from June 2008/2009 and comparing with results from studies of same nature developed by Komatsu (2004) in 1994/1995 in the city of Marilia (São Paulo) and Muniz et al (2007) in 2003/2005 in Paraná. Methods: Fracture types, age and gender were ana...
Roadmap to spline-fitting potentials in high dimensions
Patrício, M.; Santos, J. L.; Patrício, F.; Varandas, A. J. C.The use of the theory of splines to approximate the potential energy surface in molecular dynamics is examined. It is envisaged that such an approximation should be able to accurately capture the potentials’ behavior and be computationally cost effective, both for one-dimensional and n-dimensional problems with n arbitrary. In this regard, the problem of dimensionality is pinpointed, with shape-preserving splin...
Sensing Structure based on Surface Plasmonic Resonance in Single Mode Optical F...
Coelho, L.; Almeida, J. M.; Santos, J. L.; Ferreira, R. A. S.; Andre, P. S.; Viegas, D.Many optical systems based on Surface Plasmon Resonance (SPR) have been developed for work as refractometers, chemical sensors or even for measure the thickness of metal and dielectric thin films. These kinds of systems are usually large, expensive and cannot be used for remote sensing. Optical fiber sensors based on SPR has been widely studied for the last 20 years with several configurations mostly using mult...