Results 11 to 20 of about 183,561 (262)

Application of response surface methodology to study the biological removal of nitrogen from effluent of cattle slaughterhouse in a sequencing batch reactor [PDF]

open access: yesEngenharia Agrícola, 2014
The aim of this study was to evaluate the efficiency of a sequencing batch reactor (SBR) on biological removal of nitrogen from cattle slaughterhouse wastewater by nitrification/denitrification processes.
Adriana N. de Lima   +4 more
doaj   +2 more sources

Some Optimality Variations of Central Composite Designs [PDF]

open access: yesAcademic Journal of Applied Mathematical Sciences, 2019
Some variations of central composite designs (CCD) under complete and partial replications of cube, axial and center points are studied using A, D and G optimality criteria. The results obtained suggest that complete replication of the cube, axial and center points are better than the partial replication of cube, axial and center points under the A and
Lilian O. Ngonadi, F. C. Eze
openaire   +1 more source

Use of experimental design to evaluate the adsorption of chromium (VI) by alginate/polyaniline beads [PDF]

open access: yesJournal of the Serbian Chemical Society, 2022
Low-cost decorated sodium alginate beads with polyaniline (Alg@PANI beads) were easily prepared using a cross-linking method, and employed for the adsorption of Cr(VI) from aqueous solutions.
Abdelmajid Belkhodja   +4 more
doaj   +1 more source

Slope Rotatable Central Composite Designs of Second Type

open access: yesAsian Journal of Probability and Statistics, 2022
Central composite design (CCD) is the most commonly used fractional factorial design used in the response surface model. Kim [1] proposed second order rotatable designs (SORD) of second type using CCD, in which the positions of axial points are indicated by two numbers\(\left(a_{1}, a_{2}\right)\).
B. Re. Victorbabu, B. Venkata Ravikumar
openaire   +1 more source

Optimization of fast disintegration tablets using pullulan as diluent by central composite experimental design

open access: yesJournal of Pharmacy and Bioallied Sciences, 2012
The objective of this work was to apply central composite experimental design to investigate main and interaction effect of formulation parameters in optimizing novel fast disintegration tablets formulation using pullulan as diluents.
Dipil Patel   +3 more
doaj   +1 more source

Electricity Generation with the Novel 3D Electrode from Swim Wastewater in a Dual-chamber Microbial Fuel Cell

open access: yesMATEC Web of Conferences, 2016
The swine wastewater has the characteristics of high concentration of organic matter, suspended solids and more high ammonia nitrogen, odor, complex pollution ingredient and large emissions. Microbial fuel cells (MFC) is an electrochemical and biological
Lai Mei-Feng   +3 more
doaj   +1 more source

Screening and optimization of extracellular pectinase produced by Bacillus thuringiensis SH7

open access: yesOpen Chemistry, 2023
The objective of the current research was to identify and evaluate the possibility of production of pectinase, also known as pectin degrading enzymes, from indigenous bacterial strains.
Umar Maria   +9 more
doaj   +1 more source

Very large fractional factorial and central composite designs

open access: yesACM Transactions on Modeling and Computer Simulation, 2005
We present a concise representation of fractional factorials and an algorithm to quickly generate resolution V designs. The description is based on properties of a complete, orthogonal discrete-valued basis set called Walsh functions. We tabulate two-level resolution V fractional factorial designs, as well as central composite designs allowing ...
Sanchez, S.M., Sanchez, P.J.
openaire   +3 more sources

Optimisation of Vitamin B12 Extraction from Green Edible Seaweed (Ulva lactuca) by Applying the Central Composite Design

open access: yesMolecules, 2022
Vitamin B12, only found naturally in animal-based foods, is essential for brain functions and various chemical reactions in the human body. Insufficient vitamin B12 leads to vitamin B12 deficiency, common among strict vegetarians due to their limited ...
Deny Susanti   +6 more
doaj   +1 more source

OPTIMISATION OF Bacillus amyloliquefaciens FE-K1 EXTRACELLULAR PEPTIDASE PRODUCTION BY RESPONSE SURFACE METHODOLOGY

open access: yesTrakya University Journal of Natural Sciences, 2018
In this study, it was aimed to optimise the extracellular peptidase production of Bacillus amyloliquefaciens FE-K1, previously isolated from ropy wholemeal bread, by using response surface methodology (RSM) based on central composite design (CCD).
Fundagül EREM   +2 more
doaj   +5 more sources

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