Results 11 to 20 of about 1,331,204 (228)

Amphoteric surface active agents

open access: yesGrasas y Aceites, 1995
2-[trimethyl ammonium, triethyl ammonium, pyridinium and 2-amino pyridinium] alkanoates, four series of surface active agents containing carbon chain C12, C14, C16 and C18carbon atoms, were prepared. Their structures were characterized by microanalysis, infrared (IR) and nuclear magnetic resonance (NMR).
A.M. F. Eissa
openaire   +5 more sources

Physicochemical properties, cytotoxicity and penetration into dentinal tubules of sodium hypochlorite with and without surfactants [PDF]

open access: yesRestorative Dentistry & Endodontics, 2020
ObjectivesThe aim of this study was to assess the physicochemical properties, cytotoxicity and penetration into dentinal tubules of ChlorCid™ Surf (3% sodium hypochlorite [NaOCl] with surfactant) in comparison to ChlorCid™ (3% NaOCl without surfactant ...
Hernán Coaguila-Llerena   +5 more
doaj   +1 more source

MICROBIAL SURFACE-ACTIVE SUBSTANCES AS ANTIADHESIVE AGENTS [PDF]

open access: yesBiotechnologia Acta, 2016
The literature data of recent years about capacity of biosurfactants synthesized by bacteria (Pseudomonas, Lactobacillus, Bacillus) and fungi (Candida, Trichosporon, Saccharomyces) not only to avert the adhesion of microorganisms on the different ...
T. P. Pirog   +2 more
doaj   +1 more source

Biosurfactants and Their Applications in the Oil and Gas Industry: Current State of Knowledge and Future Perspectives

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Surfactants are a group of amphiphilic chemical compounds (i.e., having both hydrophobic and hydrophilic domains) that form an indispensable component in almost every sector of modern industry.
Christina Nikolova, Tony Gutierrez
doaj   +1 more source

Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills. [PDF]

open access: yesMicrob Cell Fact, 2017
Background The application of chemical dispersants as a response to marine oil spills is raising concerns related to their potential toxicity also towards microbes involved in oil biodegradation.
Raddadi N   +3 more
europepmc   +2 more sources

Comparison of Respiratory Outcomes between Less Invasive Surfactant Administration and the Intubation-Surfactant-Extubation Technique in Premature Infants with Respiratory Distress Syndrome [PDF]

open access: yesNeonatal Medicine, 2020
Purpose To compare respiratory outcomes between less invasive surfactant administration (LISA) and the intubation-surfactant-extubation (INSURE) technique in premature infants with respiratory distress syndrome (RDS). Methods We performed a retrospective
Hye Seon Kim   +7 more
doaj   +1 more source

Characteristics of increasing displacement efficiency by surface-active polymer flooding for enhancing oil recovery

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
Surface-active polymer is a novel multifunctional active polymer applied for enhancing oil recovery which has both viscosity-increasing ability and surface activity.
Qiannan Yu   +6 more
doaj   +1 more source

Hydroxamic acid surface active agents

open access: yesGrasas y Aceites, 2001
p-Hydroxy phenyloctadecanol and p-hydroxy phenyloctadecanoic acid were used as new precursors for the preparation of surface active hydroxamic acid including different moles of propylene oxide.
M. H.M. Ahmed   +2 more
doaj   +1 more source

The effect of surfactants on electrochemical hydrogen production [PDF]

open access: yesشیمی کاربردی روز, 2019
One of the problems of اydrogen production by the electrochemical method is forming and remaining of hydrogen bubbles on the surface of the electrode, which leads to considerable reduction in efficiency of hydrogen generation. The aim of this study is to
Ali Ghaffarinead   +3 more
doaj   +1 more source

Effect of EDTA with various surface active agents on the bond strength of an epoxy resin-based sealer to dentin: ex vivo

open access: yesActa Odontologica Turcica, 2017
Objective: The aim of this in vitro study was to evaluate the effect of addition of various surface-modifying agents to EDTA solution on the bond strength of an epoxy-based sealer to the root canal dentin. Materials and Method: Sixty single-rooted human
Mehmet Burak Güneşer   +3 more
doaj   +1 more source

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