Results 31 to 40 of about 70,527 (351)
Química 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
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Removal of quaternary ammonium compounds in ion exchange process [PDF]
E3S 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
Synthesis and Properties of Cleavable Quaternary Ammonium Compounds
Journal of Oleo Science, 2021 Quaternary ammonium compounds are widely used as antiseptic and disinfectant. It is been a concern that their widespread use will lead to an increase of environmental problems, therefore the development of biodegradable surfactants is necessary. The present research is aimed at the design of novel amphiphilic molecules with similar properties to those ...
Gilbert, Elangeni Ana +5 more
openaire +5 more sources
Coresistance to quaternary ammonium compounds in extended-spectrum beta-lactamase-producing Escherichia coli [PDF]
International Journal of One Health, 2020 Background and Aim: Extended-spectrum β-lactamases (ESBL) in Escherichia coli constitutes one of the major threats to modern medicine, and the increasing pollution with quaternary ammonium compounds (QACs) has been suspected to contribute to the spread ...
Susanne Sütterlin +2 more
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Pharmaceutics, 2019 Quaternary ammonium amphiphiles are a class of compounds with a wide range of commercial and industrial uses. In the pharmaceutical field, the most common quaternary ammonium surfactant is benzalkonium chloride (BAC), which is employed as a preservative ...
Diego Romano Perinelli +7 more
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Synthesis, characterization, and bioactivity of rosin quaternary ammonium salt derivatives [PDF]
BioResources, 2013 Two series of rosin quaternary ammonium salts (QAS) were synthesized using the same path. The structure of the target products was characterized by HPLC, MS, IR, and 1HNMR, and the bioactivity was determined by filter paper method using Trametes ...
Tao Liang +3 more
doaj
Strategies for studying permeation at voltage-gated ion channels [PDF]
, 1991 Voltage-dependent ion channels are presently thought to consist of several distinct functional regions: (a) activation gates, (b) inactivation gates, and permeation pathways.
Lester, Henry A.
core +1 more source
Process for purification of waste water produced by a Kraft process pulp and paper mill [PDF]
, 1979 The water from paper and pulp wastes obtained from a mill using the Kraft process is purified by precipitating lignins and lignin derivatives from the waste stream with quaternary ammonium compounds, removing other impurities by activated carbon produced
Humphrey, M. F.
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Microorganisms, 2023 Hormesis, or the hormetic effect, is a dose- or concentration-dependent response characterised by growth stimulation at low concentrations and inhibition at high concentrations.
Samantha J. McCarlie +5 more
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Advanced Biology, EarlyView.In this study, a new type of bioactive glass fiber ‐based composite magnesium phosphate bone cement is prepared and verified that its mechanical strength and biological properties. In addition, the cement may have played a biologically active role in the Notch and HIF signaling pathways.
Yuzheng Lu +12 more
wiley +1 more source