Results 21 to 30 of about 72,446 (353)

An improved dental composite with potent antibacterial function [PDF]

open access: yes, 2019
A new BisGMA-based antibacterial dental composite has been formulated and evaluated. Compressive strength and bacterial viability were utilized to evaluate the formed composites.
Almousa, Rashed   +3 more
core   +1 more source

Bacterial metabolism of quaternary ammonium compounds [PDF]

open access: yesApplied and Environmental Microbiology, 1977
Of 10 quaternary ammonium compounds tested for biodegradation by the biological oxygen demand technique, only decyl- and hexadecyltrimethylammonium bromides were decomposed by organisms derived from sewage and soil. A mixture consisting of individual strains of Pseudomonas and Xanthomonas grew in solutions containing decyltrimethylammonium bromide as ...
M Alexander, D Dean-Raymond
openaire   +3 more sources

Novel Bis-Ammonium Salts of Pyridoxine: Synthesis and Antimicrobial Properties

open access: yesMolecules, 2020
A series of 108 novel quaternary bis-ammonium pyridoxine derivatives carrying various substituents at the quaternary nitrogen’s and acetal carbon was synthesized.
Nikita V. Shtyrlin   +16 more
doaj   +1 more source

A Most Unusual Zeolite Templating: Cage to Cage Connection of One Guest Molecule [PDF]

open access: yes, 2010
An unusual case of a diquaternary ammonium dication, with large bulky end groups built from the tropane moiety and connected by a C4 methylene chain, is found to reside in zeolite SSZ-35 (STF).
Burton, Allen W.   +6 more
core   +1 more source

Dual antibacterial effect of immobilized quaternary ammonium and aliphatic groups on PVC [PDF]

open access: yes, 2015
A coating comprising quaternary ammonium salts (QAS) and aliphatic moieties was formed on the poly(vinyl chloride) (PVC) surface in order to confer antibacterial activity. This was achieved by grafting mercaptopropyltrimethoxysilane onto PVC, followed by
Copello, Guillermo Javier   +4 more
core   +1 more source

Estudo da emissão por fluorescência de ultravioleta na quantificação de um inibidor de corrosão do tipo sal de amônio quaternário em água

open access: yesQuímica Nova, 2012
Quaternary ammonium salts are the corrosion inhibitors most frequently used by the oil industry. In this study, the ultraviolet fluorescence technique was evaluated for the analysis of a quaternary ammonium salt in water as a corrosion inhibitor.
Herllaine de Almeida Rangel   +1 more
doaj   +1 more source

Tertiary alkylamines as nucleophiles in substitution reactions at heteroaromatic halide during the synthesis of the highly potent pirinixic acid derivative 2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid (YS-121) [PDF]

open access: yes, 2011
YS-121 [2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid] is the result of target-oriented structural derivatization of pirinixic acid.
Gabler, Matthias   +1 more
core   +2 more sources

Removal of quaternary ammonium compounds in ion exchange process [PDF]

open access: yesE3S Web of Conferences, 2019
The study attempted to evaluate the effectiveness of ion exchange process in cationic surfactant (benzalkonium chloride, BAC) removal from model solutions.
Klimonda Aleksandra, Kowalska Izabela
doaj   +1 more source

Evaluation of Third Generation Quaternary Ammonium Compounds for the Sterilisation of Operation Theatre [PDF]

open access: yes, 2023
Sterilisation of operation theatre is the global method in the prevention of surgical wound infections. In recent years the first- and second-generation compounds are replaced by the third-generation quaternary ammonium compounds.
C. Naga Prashanthi   +3 more
core   +3 more sources

Reaction of N,N-Dimethyltryptamine with Dichloromethane Under Common Experimental Conditions. [PDF]

open access: yes, 2018
A large number of clinically used drugs and experimental pharmaceuticals possess the N,N-dimethyltryptamine (DMT) structural core. Previous reports have described the reaction of this motif with dichloromethane (DCM), a common laboratory solvent used ...
Dunlap, Lee E, Olson, David E
core   +3 more sources

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