Results 31 to 40 of about 14,645 (208)

Biocatalytic activity of Monascus mycelia depending on physiology and high sensitivity to product concentration

AMB Express, 2017
Cell suspension culture using mycelia as whole cell biocatalyst for production of orange Monascus pigments has been carried out successfully in a nonionic surfactant micelle aqueous solution.
Fengling Lu, Yaolin Huang, Xuehong Zhang, Zhilong Wang   +3 more
doaj   +1 more source

The effect of alkaline–surfactant on the wettability, relative permeability and oil recovery of carbonate reservoir rock: experimental investigation

Journal of Petroleum Exploration and Production Technology, 2019
Due to the increasing demand and the price of hydrocarbon fuels, today, cost-effective enhanced recovery of oil and gas reservoirs has become one of the most interesting research topics. Since the Iranian reservoirs have a considerable potential to apply
Erfan Hosseini, Farzad Hajivand, Reza Tahmasebi   +2 more
doaj   +1 more source

The Influence of Bicomponent Mixed Surfactants on Drop/Interface Coalescence [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2004
Effects of binary mixtures of ionic/nonionic (sodium dodecyl sulfate/2-heptanol or 1-decanol) and nonionic/nonionic surfactants (2-heptnol/1-decanol) on drop/interface coalescence of water drops in a continuous n-heptane phase were examined.
Parissa Khadiv Parsi, Mohammad Ali Moosavian   +1 more
doaj  

An experimental study of the physical mechanisms of fluid flow in tight carbonate core samples by binary surfactants

Heliyon
Binary surfactants present a promising approach to modifying the petrophysical mechanisms of rock formations to enhance fluid flow, particularly in challenging environments like carbonate rocks.
Ayomikun Bello, Anastasia Ivanova, Alexander Rodionov, Tagir Karamov, Andrey Morkovkin, Alexey Cheremisin   +5 more
doaj   +1 more source

Crack Reduction during Drying Process by Using Surfactant [PDF]

MATEC Web of Conferences, 2019
In this research clay brick samples were made from illitic clays. Surfactant was added to clay mass during formation process to reduce crack generation during drying process.
Guzlena Sandra, Sakale Gita, Certoks Sergejs, Spule Arnita   +3 more
doaj   +1 more source

Studies on the Detergency of Nonionic Surfactant. V.

Journal of Japan Oil Chemists' Society, 1963
To investigate the detergency of nonionic surfactant, following two parts of experiments were carried out for the polyoxyethylene nonylphenyl ether EO 10mole (PEG-N) by using Launder-O-meter and artificial standard soiled cotton cloth.1) The effects of inorganic builders on soft and hard water.The concentration of PEG-N aqueous solutions was from 0.05g/
Masaharu KAME, Yasuhiko DANJO, Seiichiro KISHIMA, Hideyuki KODA   +3 more
openaire   +6 more sources

Surfactant and temperature effects on paraben transport through silicone membranes

, 2013
This study investigates the effects of two surfactants (one anionic and one non-ionic) and controlled modifications in temperature (298–323 K) on the permeation of two structurally similar compounds through a silicone membrane using a Franz diffusion ...
Bibi, Aisha, Mitchell, John C., Dennis, Laura, Waters, Laura J.   +3 more
core   +1 more source

Model for the Simulation of the CnEm Nonionic Surfactant Family Derived from Recent Experimental Results [PDF]

, 2020
Using a comprehensive set of recently published experimental results for training and validation, we have developed computational models appropriate for simulations of aqueous solutions of poly(ethylene oxide) alkyl ethers, an important class of micelle-
Richard L., Anderson, Swope WC, Johnston MA, William, Swope, Anderson RL, Andrew, Duff, Duff AI, Michael, Johnston   +7 more
core   +1 more source

Effects of Spray Surfactant and Particle Charge on Respirable Coal Dust Capture

Safety and Health at Work, 2017
Background: Surfactant-containing water sprays are commonly used in coal mines to collect dust. This study investigates the dust collection performance of different surfactant types for a range of coal dust particle sizes and charges. Methods: Bituminous
Mei W. Tessum, Peter C. Raynor
doaj   +1 more source

The influence of surfactant structure on the dyeing of polyamide knitting with acid dyes [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2018
The influence of nonionic and anionic surfactants on the dyeing kinetics of polyamide 6 knitting was studied in this work. The influence of surfactants on the dyeing process is presented by determining the kinetic and thermodynamic parameters of dyeing ...
Ristić Nebojša N., Dodić Ivica R., Ristić Ivanka P.   +2 more
doaj   +1 more source