Fractional Factorial Designs
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
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
-
2. 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
-
3. 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
-
4. Optimal treatment choice and blocking for the construction of fractional factorial designs / Escolha de tratamentos e blocagem otimizados na construÃÃo de fatoriais fracionÃrios
This work deals with implementing exchange and interchange algorithms. Efficiency based optimality criteria were used to and optimal fractional factorials for response surface designs. Both treatment choice and blocking were considered. Designs found for each situation were compared to alternatives from literature. In all cases A-optimal or D-optimal designs
Publicado em: 2009
-
5. Productions of ethyl esters (biodesel) from the transesterification core residual oil / Produção de esteres etilicos (biodiesel) a partir da transesterização basica de oleo residual
Biodiesel (alkyl esters) is a clean burning fuel derived from a renewable lipid feedstock such as vegetable oil or animal fat. It is biodegradable, non-inflammable, nontoxic and produce much lesser COx, sulfur dioxide and unburned hydrocarbons than petroleum-based diesel. Nowadays, due to the price of virgin oil such as soybean and canola oils, the use of lo
Publicado em: 2008
-
6. Optimization of an amperometric biosensor for the detection of hepatitis C virus using fractional factorial designs
O planejamento fatorial fracionário e com ponto central foram aplicados no desenvolvimento de um biossensor amperométrico para determinação do vírus da hepatite C. As biomoléculas foram imobilizadas por adsorção em eletrodos de grafite modificados com filme sol-gel preparado com matriz híbrida siloxano-poli(propileno-óxido). Diversos parâmetros fo
Journal of the Brazilian Chemical Society. Publicado em: 2008
-
7. 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
-
8. Influence evaluation of some factors in the mechanical properties of binder mixtures using design and analysis of asymmetric fractional factorial experiments technique / Avaliação da influência de alguns fatores nas propriedades mecânicas de misturas asfálticas densas, à luz da técnica de planejamento e análise de experimentos fatoriais fracionários assimétricos
This work deals with the influence of some factors in the mechanical behavior of asphalt mixtures stability and flexibility. Three types of binders were tested, conventional one, modified with 4,5% of SBS and modified with 20% of recycled tire rubber. Two aggregate gradations were tested, center of B and C gradations of DNER (1997). Four binder contents were
Publicado em: 2004
-
9. Application design of experiments in the injection molding process. / Aplicação das técnicas de planejamento e análise de experimentos na melhoria da qualidade de um processo de fabricação de produtos plásticos.
Industrial experiments are made by companies in order to improve the quality characteristics of products and production processes. In this sense, the objective of this dissertation is to study and apply the design of experiments in the industrial quality improvement. In addition, as a part of the objective, an application of the techniques of design Fraction
Publicado em: 2002
-
10. EFFECTS OF THE FIRMS SOCIAL INVOLVEMENT ON CONSUMER BEHAVIOR
Firms social involvement is common practice in the modern world. The issue has received intense attention in general and academic literature. In particular, the management literature has focused on corporate social responsibility. Societal obligations, altruistic behavior, and economic motivations have been shown to motivate social involvement. Among economi
Publicado em: 1998
-
11. Estudo da produção de amiloglicosidase por Aspergillus Niger NRRL 3122 em fermentação semi solida de farelo de arroz
This is an experimental study of solid-state fermentation(SSF) of rice bran to produce amyloglucosidase (E.C. 3.2.1.3.) by Aspergillus niger NRRL 3122. The research was conducted in 4 phases: optimization of physico-chemical parameters; SSF in fixed-bed column reactors; characterization of enzyme kinetics; determination of thermal conductivity. An experiment
Publicado em: 1996
-
12. Use of a Fractional Factorial Design to Evaluate Interactions of Environmental Factors Affecting Biodegradation Rates
For investigation of main and interactive effects of six experimentally controlled environmental factors on phenol biodegradation in a shake-flask system, a largely neglected statistical procedure was applied. A major benefit resulting from the application of the orthogonal, fractional factorial design is that the number of experiments necessary to evaluate