Inversion Of Physical Parameters
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. PREPARATION AND CHARACTERIZATION OF NANOEMULSION CONTAINING A NATURAL NAPHTHOQUINONE
Natural naphthoquinones such as lapachol (Lp) have demonstrated promising biological activities. However, these quinones present low systemic biodisponibility due to its poor aqueous solubility. To overcome this problem, nanoemulsions (NE) formed by oily core are able to incorporate hydrophobic molecules thus enabling them to be dispersed into an aqueous pha
Quím. Nova. Publicado em: 2018-07
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2. Geophysical modeling in gold deposit through DC Resistivity and Induced Polarization methods
Abstract Ore mining fundamentally depends on the definition of its tenor and volume, something extremely complex in disseminated mineralization, as in the case of certain types of deposits of gold and sulfites. This article proposes the use of electrical tomography for definition of a geophysical signature in terms of electrical resistivity and chargeability
REM, Int. Eng. J.. Publicado em: 2016-09
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3. CARACTERIZAÇÃO TECNOLÓGICA DE UM SINTER FEED HEMATÍTICO CONTENDO DIFERENTES PROPORÇÕES E TIPOS DE SÍLICA NAS FRAÇÕES ADERENTES, INTERMEDIÁRIAS E NUCLEANTES
There are important Vale iron ore reserves located in the state of Minas Gerais. The hematite/itabirite relationship in the ROMs has been decreasing compared to the last decade. The beneficiation plants have been concentrating its efforts on reducing the silica content in the sinter feed in order to reach the quality levels demanded for the sintering process
Publicado em: 2010
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4. Operação analógica de transistores de múltiplas portas em função da temperatura. / Analog operation of multiple gate transistors as a function of the temperature.
In this work it is presented an analysis of the analog operation of multiple gate transistors, evaluating the Early Voltage, the open-loop voltage gain, the transconductance over the drain current ratio (gm/IDS), the drain conductance and, especially, the harmonic distortion exhibited by these devices. Along the work, FinFETs, Gate-All-Around (GAA) devices w
Publicado em: 2010
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5. INVERSION OF PARAMETERS IN SEISMIC DATA BY GENETIC ALGORITHMS / INVERSÃO DE PARÂMETROS EM DADOS SÍSMICOS POR ALGORITMOS GENÉTICOS
This dissertation investigates the use of Genetic Algorithms applied to seismic data with the objective of obtaining physical parameters and seismic attributes that would facilitate the characterization of rocks in terrestrial subsoil. The seismic data has been extensively utilized in the field of petroleum exploration. The applications involving seismic are
Publicado em: 2005
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6. Spinning process variables and polymer solution effects in the die-swell phenomenon during hollow fiber membranes formation
During hollow fiber spinning many variables are involved whose effects are still not completely clear. However, its understanding is of great interest because the control of these variables may originate membranes with the desired morphologies and physical properties. In this work, the phase inversion process induced by the immersion precipitation technique
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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7. Tratamento enzimatico em suco de manga (Mangifera indica L. cv. Keitt) para redução dos teores de sacarose e glicose e obtenção de geleia atraves de processo continuo
The new trend of searching for products with reduced caloric values and sugar contents by consumers dependent on restrictive diets, either for health related reasons or by personal option, has stimulated the growth of the food industry in this sector, with the commitment to formulate products of sensory and nutritional quality. Based on this context, the obj
Publicado em: 2000
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8. 1D SEISMIC INVERSION USING SIMULATED ANNEALING / A INVERSÃO SÍSMICA 1D USANDO O SIMULATED ANNEALING
The seismic inverse problem involves determining the subsurface physical properties from data sampled at Earth`s surface. A mathematical model of the response of the subsurface excited by a seismic source, having physical properties as parameters, provides a synthetic model for this response. This makes possible to compare sampled and synthetic data. The per
Publicado em: 1997
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9. Solução de problemas poroelasticos atraves do metodo dos elementos de contorno
The Biot s theory af poroelasticity is revisited making it more easily applicable to practical problems. The parameters used by Biot are redefined as functions of other ones with an easier and simpler physical interpretation. This helps their determination and the understanding of poroelastic phenomena. The equations that govern the theory of quasi-static li
Publicado em: 1995
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10. Estudo cinetico da invertase livre e imobilizada em alginato de calcio
In this work special emphasis was given to the study of the kinetics of sucrose hydrolysis by invertase. The enzyme was used in free as well immobilized in calcium alginate forms. The kinetic parameters ware determined considering the initial rates of reaction, in order to avoid the iinhibition phenomena caused by the products glucose and fructose. The pH an
Publicado em: 1989