Order Value Optimization
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Multivariate Optimization Applied to the Synthesis of Meglumine Antimoniate with Low Levels of Trivalent Antimony
Meglumine antimoniate (MA) is a pentavalent antimony (SbV) drug recommended for the treatment of leishmaniasis. It is known that the trivalent antimony (SbIII) present as a residue in MA contributes to the drug side effects. In this article, multivariate optimization was used in the synthesis of MA in order to obtain a drug with low levels of SbIII. Four var
J. Braz. Chem. Soc.. Publicado em: 2021-08
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2. Optimization of magnetic resonance imaging protocol for the diagnosis of transient global amnesia
Resumo Objetivo: Enfatizar o protocolo de difusão mais adequado para detecção de lesões da amnésia global transitória, a fim de realizar um exame preciso, em tempo ideal, após o início dos sintomas. Materiais e Métodos: Foram analisados cinco pacientes com diagnóstico de amnésia global transitória atendidos entre 2012 e 2015, considerando-se da
Radiol Bras. Publicado em: 09/05/2019
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3. Enzyme-assisted extraction of polyphenols from green yerba mate
Resumo A extração de bioativos de plantas assistida por enzimas tem sido estudada como uma tecnologia verde alternativa. As carboidrases foram candidatas para melhorar o processo de extração de numerosos compostos bioativos de plantas. Os polifenóis são metabólitos secundários de plantas geralmente envolvidos em defesa contra diferentes tipos de estr
Braz. J. Food Technol.. Publicado em: 09/05/2019
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4. Scenario reduction using machine learning techniques applied to conditional geostatistical simulation
Abstract One of the basic factors in mine operational optimization is knowledge regarding mineral deposit features, which allows to predict its behavior. This could be achieved by conditional geostatistical simulation, which allows to evaluate deposit variability (uncertainty band) and its impacts on project economics. However, a large number of realizations
REM, Int. Eng. J.. Publicado em: 2019-03
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5. Estrategia para la optimización de un compuesto de caucho con aceite de soja utilizando diseños de experimentos
ABSTRACT When a rubber component is made, is necessary to start from a “rubber compound” which may be composed of one or more polymers and various additives or fillers. The development of an elastomer mixture to produce a compound with a specific end-use is complicated in the field of rubber technology. Therefore, the successful development of a compound
Matéria (Rio J.). Publicado em: 19/07/2018
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6. Ultrasonic-extraction of phenolic compounds from Phyllanthus urinaria: optimization model and antioxidant activity
Abstract Ultrasonic-assisted extraction technique was used to extract phenolic compounds from Phyllanthus urinaria and response surface methodology was used to optimize the extraction parameters including ultrasonic time (X1), ethanol concentration (X2) and solid-liquid ratio (X3). A mathematical model of the tree parameters for the high extraction yield (Y)
Food Sci. Technol. Publicado em: 21/12/2017
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7. Surface Integrity Analysis in Machining of Hardened AISI 4140 Steel
This study aimed to analyze the residual stresses and roughness in finishing milling of AISI 4140 steel, quenched and tempered up to hardness of 58 HRC. Machining operations were performed with the use of CBN inserts and by varying three basic cutting parameters (cutting speed, feed per tooth and cutting depth). Hardened materials are typically machined by a
Mat. Res.. Publicado em: 23/01/2017
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8. Use of an Artificial Neural Network-based Metamodel to Reduce the Computational Cost in a Ray-tracing Prediction Model
Abstract The purpose of this article is based on analyzing the use of RTQ3D (“quasi-3D” ray tracing technique) to produce the value of the initial electromagnetic fields or fitness for a hundred and sixty receivers according to the possible positions of two antennas to be distributed in a closed environment. The problem variables consist of the values of
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-12
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9. Structure Comparison and Optimal Design of 6-RUS Parallel Manipulator Based on Kinematic and Dynamic Performances
Abstract The effects of distinctive parameters such as revolute joint angle or spherical joint location of mobile platform in a 6-DOF 6-RUS parallel manipulators on workspace, kinematic, and dynamic indices are investigated in this study to select proper structure commensurate with performance. Intelligent multi-objective optimization method is used to desig
Lat. Am. j. solids struct.. Publicado em: 2016-12
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10. Investigation on chemical composition and optimization of essential oil obtainment from waste Pinus taeda L. using hydrodistillation
ABSTRACT: The extraction of essential oils obtained by the hydrodistillation of needles/twigs waste of Pinus taeda L. was optimized by applying response surface methodology (RSM), with 24 full factorial design, in order to improve oil essential production, and aggregate value to the production chain of pine wood. Through the model it was possible to ascertai
Braz. arch. biol. technol.. Publicado em: 07/06/2016
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11. A SURVEY ON MULTIOBJECTIVE DESCENT METHODS
We present a rigorous and comprehensive survey on extensions to the multicriteria setting of three well-known scalar optimization algorithms. Multiobjective versions of the steepest descent, the projected gradient and the Newton methods are analyzed in detail. At each iteration, the search directions of these methods are computed by solving real-valued optim
Pesqui. Oper.. Publicado em: 2014-12
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12. Computation of interactive effects and optimization of process parameters for alkaline lipase production by mutant strain of Pseudomonas aeruginosa using response surface methodology
Alkaline lipase production by mutant strain of Pseudomonas aeruginosa MTCC 10,055 was optimized in shake flask batch fermentation using response surface methodology. An empirical model was developed through Box-Behnken experimental design to describe the relationship among tested variables (pH, temperature, castor oil, starch and triton-X-100). The second-or
Braz. J. Microbiol.. Publicado em: 09/04/2013