scholarly journals Analyzing Factors Affecting the Success of Social Media Posts for B2b Networks: A Fractional-Factorial Design Approach

2017 ◽  
Vol 4 (6) ◽  
pp. 112-123
Author(s):  
Kontsevaia Diana B ◽  
Berger Paul D
Keyword(s):  
Social Media ◽  
Factorial Design ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Design Approach ◽  
Factors Affecting

scholarly journals SCREENING OF FACTORS INFLUENCING EXO-POLYGALACTURONASE PRODUCTION BY ASPERGILLUS NIGER ATCC 120120 USING TWO-LEVEL FRACTIONAL FACTORIAL DESIGN

2019 ◽  
Vol 81 (6) ◽  
Author(s):  
Halifah Pagarra ◽  
Roshanida A. Rahman ◽  
Rachmawaty ◽  
Nor Hasmaliana Abdul Manas
Keyword(s):  
Aspergillus Niger ◽  
Moisture Content ◽  
Factorial Design ◽  
Incubation Time ◽  
Fractional Factorial Design ◽  
Inoculum Size ◽  
Fractional Factorial ◽  
Coefficient Of Determination ◽  
Screening Process ◽  
Factors Affecting

Exo-polygalacturonase was produced by Aspergillus niger ATCC 120120 in a solid-state fermentation using Nephrolepis biserrata leaves. Factors affecting the production of exo-polygalacturonase were determined using a two-level fractional factorial design. The screening process for six factors; pH, incubation time, temperature, pectin concentration, inoculum size and moisture content, that influence the production of exo-polygalacturonase by A. niger was performed. The result of variance analysis (ANOVA) suggested that there were four statistically significant (P < 0.005) factors in the production of exo-polygalacturonase by A. niger. These factors were incubation time, temperature, pectin concentration and moisture content. The statistical analysis shows that the linear mathematical model is significant with coefficient of determination (R2) value of 0.9711. The optimum production of exo-polygalacturonase obtained using the model in this study was at 40.00 U/g.

Influence of different parameters and their coupled effects on the stability of alumina nanofluids by a fractional factorial design approach

2017 ◽  
Vol 28 (10) ◽  
pp. 2581-2588 ◽  
Author(s):  
Karen Cacua ◽  
Robison Buitrago-Sierra ◽  
Bernardo Herrera ◽  
Farid Chejne ◽  
Elizabeth Pabón
Keyword(s):  
Factorial Design ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Design Approach ◽  
The Stability
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