Fractional Factorial Experiments
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Optimization of Atmospheric Pressure Photoionization for the Crude Oil Analysis Using Ultra-High Resolution Mass Spectrometry
Design of experiments (DOE) applied to mass spectrometry (MS), mainly focusing on the optimization of ionization techniques, has been applied to optimize experiments in order to provide the highest amount of information with the lowest number of experiments. However, DOE has not been used in petroleomics. For the first time, we applied DOE to optimize the ma
J. Braz. Chem. Soc.. Publicado em: 2019-04
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2. Growth Characteristics Modeling of Mixed Culture of Bifidobacterium bifidum and Lactobacillus acidophilus using Response Surface Methodology and Artificial Neural Network
Different culture conditions viz. additional carbon and nitrogen content, inoculum size and age, temperature and pH of the mixed culture of Bifidobacterium bifidum and Lactobacillus acidophilus were optimized using response surface methodology (RSM) and artificial neural network (ANN). Kinetic growth models were fitted for the cultivations using a Fractional
Braz. arch. biol. technol.. Publicado em: 2014-12
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3. Dynamic maceration of Copaifera langsdorffii leaves: a technological study using fractional factorial design
The Copaifera langsdorffii Desf., Fabaceae, is a Brazilian native tree, known as copaiba, which oil is commonly used in folk medicine as muscle relaxant, wound healing, antiseptic and anti-inflammatory to respiratory and urinary tracts. Despite of the wide use of the oil of Copaifera species, scientific works related to the study of its leaves are rarely fou
Rev. bras. farmacogn.. Publicado em: 09/10/2012
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4. Growth characteristics modeling of Bifidobacterium bifidum using RSM and ANN
The aim of this work was to optimize the biomass production by Bifidobacterium bifidum 255 using the response surface methodology (RSM) and artificial neural network (ANN) both coupled with GA. To develop the empirical model for the yield of probiotic bacteria, additional carbon and nitrogen content, inoculum size, age, temperature and pH were selected as th
Brazilian Archives of Biology and Technology. Publicado em: 2011-12
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5. Produção de gás de síntese a partir da glicerina / Syngas production from glycerol
Biodiesel (alkyls esters) is a clean burning fuel derived from renewable lipid feedstock such as vegetable oil or animal fat. Glycerin is a by-product from the biodiesel production which represents nearly 10% of product total mass. As the biodiesel production is increasing there exist incentives to use the glycerin as raw material for other processes. The gl
Publicado em: 2010
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6. Study of the acetic bacteria nutritional necessity for the acid production / Estudo das necessidades nutricionais de bacterias aceticas para a produção de acido acetico
The acetical bacteria are used in vinegar production. The nutritional requirement of acetical bacteria is poorly known, and the maintenance of these microorganisms is too difficult. The reactors of submerged acetical fermentation promote conditions of physiologic stress: acidity (up to 10% p/v), alcohol (2%p/v) and oxygenation (0,4 vvm).These parameters are
Publicado em: 2009
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7. Aplicação de métodos quimiométricos na análise direta de constituintes inorgânicos em leite materno por espectrometria de absorção atômica em forno de grafite
In this work is described the methodology developments (optimization and validation) for direct quantification of Mn, Cu, Pb and Cr in breast milk without need of previous sample digestion following determination by furnace graphite atomic absorption spectrometry (GF AAS). For the development of methods for analysis of manganese and copper, monoethanolamine
Publicado em: 2008
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8. BLACK OIL RESERVOIRS SIMULATOR PROXY USING COMPUTATIONAL INTELLIGENCE AND FRACTIONAL FACTORIAL DESIGN OF EXPERIMENTS / APROXIMADOR DE FUNÇÃO PARA SIMULADOR DE RESERVATÓRIOS PETROLÍFEROS UTILIZANDO TÉCNICAS DE INTELIGÊNCIA COMPUTACIONAL E PROJETO DE EXPERIMENTOS FATORIAIS FRACIONADO
Em diversas etapas da cadeia de trabalho da Indústria de Óleo &Gás a atividade de Engenharia de Petróleo demanda processos que envolvem otimização. Mais especificamente, no gerenciamento de reservatórios, as metodologias para a tomada de decisão pelo uso de poços inteligentes envolvem processos de otimização. Nestes processos, normalmente, visa-se
Publicado em: 2008
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9. Extração do óleo e caracterização dos resíduos da borra de petróleo para fins de reuso
The petroleum industry, in consequence of an intense activity of exploration and production, is responsible by great part of the generation of residues, which are considered toxic and pollutants to the environment. Among these, the oil sludge is found produced during the production, transportation and refine phases. This work had the purpose to develop a pro
Publicado em: 2008
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10. Nutritional evaluation of sugarcane treated with calcium oxide at different times of exposure to cattle / Avaliação nutricional da cana-de-açúcar acrescida de óxido de cálcio em diferentes tempos de amazenamento para bovinos
Were performed 4 experiments aiming evaluate the chemical composition and in vitro and in situ digestive kinetics of sugarcane treated with calcium oxide at different exposure times under nutrients intake and digestibility, performance, and ruminal parameters of Nellore heifers. The first experiment aimed to evaluate the effects of levels of inclusion and ex
Publicado em: 2008
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11. Evaluation of the activated charcoals and adsorption conditions used in the treatment of sugarcane bagasse hydrolysate for xylitol production
Xylitol has sweetening, anticariogenic and clinical properties that have attracted the attention of the food and pharmaceutical industries. The conversion of sugars from lignocellulosic biomass into xylitol by D-xylose-fermenting yeast represents an alternative to the chemical process for producing this polyol. A good source of D-xylose is sugarcane bagasse,
Brazilian Journal of Chemical Engineering. Publicado em: 2006-03
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12. Estudo da granulação de suco de acerola desidratado em leito fluidizado. / Study of the granulation of dehydrated acerola juice in fluidized stream bed.
The objective of this work was to study the modifications in the physical properties of acerola powder, dried in spray dryer, by wet-agglomeration process in fluidized bed. The equipment used was a batch fluidized bed built in acrylic material. To study of the principal variables in granulation process, a fractional factorial design was used as statistical t
Publicado em: 2005