Results 11 to 20 of about 127,202 (251)

Aplicação da metodologia de planejamento fatorial e análise de superfícies de resposta para otimização da fermentação alcoólica Application of the factorial design and response surface methodology for optimization of alcoholic fermentation

Química Nova, 2008
In the present work, the influence of the amount of nitrogen and phosphorus and degrees Brix on the yield and productivity of alcoholic fermentation has been evaluated. The methodology used was factorial design and response surface analysis.
José Alexsandro Silva, Bolívar Ponciano Goulart de Lima Damasceno, Flávio Luiz Honorato da Silva, Marta Suely Madruga, Davi Pereira de Santana   +4 more
doaj   +1 more source

Influência do material e volume do porta-amostra na determinação termogravimétrica do teor de cinzas em mel Influence of material and volume of the sample holder on the thermogravimetric determination of ash contents in honey

Química Nova, 2005
The results suggest that the two variables studied are significant and that they may be independently optimized. The material of the sample holder interferes with the incineration process only due to the amount of heat transfered.
Maria Lurdes Felsner, Roy Edward Bruns, Jivaldo do Rosário Matos, Cristiane Bonaldi Cano, Lígia Bicudo Almeida-Muradian   +4 more
doaj   +1 more source

Aplicação de planejamento fatorial a protocolo de extração e fixação de sulfetos volatilizáveis por acidificação (SVA) em amostras de sedimento Factorial design used on the extraction and fixation of acid volatile sulfides (AVS) from sediment samples

Química Nova, 2009
The AVS is defined operationally as acid volatile sulfide, which is a controlling phase on the partition of some metallic species in sediments. A Factorial design was evaluated by means of 16 experiments and using four variables: temperature, extraction ...
Danielle Caroline Schnitzler, Marco Tadeu Grassi, Sueli Pércio Quinaia   +2 more
doaj   +1 more source

Minimum Aberration Split-Plot Designs Focusing on the Whole Plot Factors

Mathematics, 2022
In some experiments, the levels of some factors are difficult to change; then fractional factorial split-plot (FFSP) designs are suitable for selection.
Minyang Hu, Shengli Zhao
doaj   +1 more source

Split-Plot Designs with Few Whole Plot Factors Containing Clear Effects

Fractal and Fractional, 2022
Fractional factorial split-plot designs are widely used when it is impractical to perform fractional factorial experiments in a completely random order.
Yuna Zhao
doaj   +1 more source

Design of glass/phenolic ballistic composites by implementation of factorial experimental design

Zaštita Materijala, 2014
The purpose of the study is to assess the applicability of full factorial experimental design in predicting the ballistic strength of glass fiber/phenolic ballistic composites.
Dimko Dimeski, Vineta Srebrenkoska
doaj   +1 more source

Estudo das Propriedades do Pseudofruto do Cajueiro na Adsorção de Cr (VI)

Orbital: The Electronic Journal of Chemistry, 2013
In this study, the Cr (VI) adsorption properties by cashew (Anacardium occidentale L.) were studied in a batch system. The effects of pH (5.0 and 7.0), drying process – S (oven-dried and lyophilized), particle size – P (0.10 – 0.25 and 0.25 – 0.84 mm ...
Thiago C. Medeiros, Fátima I. C. C. Martins, Ronaldo F. do Nascimento, Maria das G. Gomes   +3 more
doaj   +1 more source

Experimental Investigations of Hole - EDM to Optimize Electrode Wear through Full Factorial of Design of Experiment [PDF]

Engineering and Technology Journal, 2013
Electrical discharge machining (EDM) is a process where the material removal of the workpiece is achieved through high frequency sparks between the tool (electrode) and the workpiece immersed into the dielectric solution.
Shukry H. Aghdeab, Laith A. Mohammed
doaj   +1 more source

On the Isomorphism of Fractional Factorial Designs

Journal of Complexity, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chang-Xing Ma, Kai-Tai Fang, Dennis K. J. Lin   +2 more
openaire   +2 more sources

Experimental Investigations of Hole - EDM to Optimize ElectrodeWear through Full Factorial of Design of Experiment [PDF]

Engineering and Technology Journal, 2015
Electrical discharge machining (EDM) is a process where the material removal of the workpiece is achieved through high frequency sparks between the tool (electrode) and the workpiece immersed into the dielectric solution.
Shukry H. Aghdeab, Laith A. Mohammed
doaj   +1 more source