Results 21 to 30 of about 759,357 (305)

Removal of Pb (II) from Aqueous Solution Using Response Surface Methodology with Aminated Magnetic Graphene Oxide Synthesized from Typha Latifolia [PDF]

open access: yesآب و فاضلاب, 2022
Today, environmental pollution and less accessibility of freshwater have been a serious challenge due to industrialization and urbanization. Therefore, the aim of this study was to investigate the synthesis of aminated magnetic graphene oxide (m-GO-NH2 ...
Fatemeh Einollahipeer, Narjes Okati
doaj   +1 more source

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

Optimization of medium for the production of β-cyclodextrin glucanotransferase using Central Composite Design (CCD) [PDF]

open access: yes, 2005
Production of cyclodextrin glucanotransferase (CGTase) from Bacillus G 1, a new bacterial isolate was optimized in shake-flask cultures using statistical design approach. An efficient fermentation medium producing CGTase with high activity (54.9U/ml) was
Abdul Hamid, Aidil   +5 more
core   +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

Prediction of Loss on Ignition of Ternary Cement Containing Coal Bottom Ash and Limestone Using Central Composite Design [PDF]

open access: yes, 2019
The effect of CBA/CBA-L ratio and the cement replacement on the Loss on ignition (LOI) of ternary cement blends was investigated using central composite design approach in the prediction of LOI of ternary cement blend comprising of Ordinary Portland ...
Makarfi, Isa Yusuf   +2 more
core   +2 more sources

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

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