Factorial Designs
Mostrando 1-12 de 63 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. Design of Experiments (DoE) applied to Pharmaceutical and Analytical Quality by Design (QbD)
According to Quality by Design (QbD) concept, quality should be built into product/method during pharmaceutical/analytical development. Usually, there are many input factors that may affect quality of product and methods. Recently, Design of Experiments (DoE) have been widely used to understand the effects of multidimensional and interactions of input factor
Braz. J. Pharm. Sci.. Publicado em: 08/11/2018
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3. Sod production and the effects of liquid organo-mineral fertilizers and thickness of sod
ABSTRACT: Nitrogen fertilization and an appropriate cutting thickness can result in firmer sod that can be handled in less time with greater turfgrass regrowth during the subsequent cycle. This experiment was conducted on a sod production farm located in Capela do Alto, in the state of Sao Paulo, Brazil. The soil was a dystrophic Rhodic Hapludox (Oxisol) wit
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-08
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4. End Functionalization by Ring Opening Polymerization: Influence of Reaction Conditions on the Synthesis of End Functionalized Poly(lactic Acid)
In this paper, chemical functionalization of poly(lactic acid) (PLA) was carried out by using of salicyl aldehyde (SAl) and salicylic acid (SAc) as co-initiators of ring opening polymerization (ROP). Two factorial designs (22) were performed to evaluate the effects of the lactide/catalyst and co-initiator/catalyst molar ratios on the content of aldehyde or c
J. Braz. Chem. Soc.. Publicado em: 2018-01
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5. STARCH EXTRACTION FROM THE PEACH PALM (Bactris gasepaes Kunth.) FRUIT: A MODEL APPROACH FOR YIELD INCREASE
ABSTRACT The objective was to study the starch extraction process of the peach palm (Bactris gasipaes Kunth.) fruit focused on increasing yield and in preserving the quality characteristics the extracted product. Two experimental designs are carried out in order to investigate the effects of NaOH and NaHSO3 concentrations, as well as the decantation time, on
Eng. Agríc.. Publicado em: 2017-02
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6. OTIMIZAÇÃO MULTIVARIADA DE METODOLOGIA PARA DIGESTÃO DE MICROPARTÍCULAS POLIMÉRICAS CARREADORAS DE CÁTIONS METÁLICOS
There are not reports in the literature of digestion processes of metallic cation carrier microparticles. Multivariate experimental designs were utilized to ensure an appropriate digestion for further analysis by atomic absorption spectroscopy. It was used a heater plate and the polimeric degradation was evaluated utilizing an analyzer of total organic carbo
Quím. Nova. Publicado em: 2017-01
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7. An Evaluation of the Use of Statistical Procedures in Soil Science
ABSTRACT Experimental statistical procedures used in almost all scientific papers are fundamental for clearer interpretation of the results of experiments conducted in agrarian sciences. However, incorrect use of these procedures can lead the researcher to incorrect or incomplete conclusions. Therefore, the aim of this study was to evaluate the characteristi
Rev. Bras. Ciênc. Solo. Publicado em: 29/08/2016
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8. Nectandra falcifolia: potential phytopharmaceutical for skin damage protection designed by statistical approach and characterized by photoacoustic spectroscopy
AbstractPhytopharmaceutical products are being used in the treatment and prevention of health problems. Nowadays, the development and evaluation of novel pharmaceutical products is expensive and time consuming. A statistical approach is a good tool for optimal development processes. Nectandra falcifolia (Nees) J.A. Castigl. ex Mart. Crov. & Piccinini, Laurac
Rev. bras. farmacogn.. Publicado em: 2015-06
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9. Use of multivariate experimental designs for optimizing the reductive degradation of an azo dye in the presence of redox mediators
The optimization of the anaerobic degradation of the azo dye Remazol golden yellow RNL was performed according to multivariate experimental designs: a 2² full-factorial design and a central composite design (CCD). The CCD revealed that the best incubation conditions (90% color removal) for the degradation of the azo dye (50 mg L- 1) were achieved with 350 m
Quím. Nova. Publicado em: 2014-06
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10. Improvement of submerged culture conditions to produce colorants by Penicillium purpurogenum
Safety issues related to the employment of synthetic colorants in different industrial segments have increased the interest in the production of colorants from natural sources, such as microorganisms. Improved cultivation technologies have allowed the use of microorganisms as an alternative source of natural colorants. The objective of this work was to evalu
Braz. J. Microbiol.. Publicado em: 2014-06
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11. Otimização da etapa de extração do ácido clavulânico presente no caldo de fermentação utilizando misturas de solventes
The purpose of this work was to study four different solvent mixtures intended to increase the yield of the extraction stage of clavulanic acid (CA), which is one of the steps in the purification process. Four central composite rotatable designs (CCRD) were utilized to optimize the solvent mixtures. The variables selected for the factorial design were solven
Quím. Nova. Publicado em: 2014
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12. Fosfato monoamônio revestido com polímeros no plantio das culturas de milho irrigado e cana-de-açúcar
Phosphorus (P) is the most limiting nutrient, in tropical conditions, for crop yield, mostly due to its low contents and high fixation in soils. Moreover, it is common to observe low efficacy of phosphate fertilizers, with plant absorption varying from 20% to 30%. Therefore, the reduction of phosphate fertilizers expenses and, or, increasing its efficacy, co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/01/2012