Results 111 to 120 of about 20,590 (164)
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2012
The main cause of failure of biomedical implants is bacterial infections. Despite all efforts, it will never be possible to completely free operating theaters from bacteria, as human bodies contain already 1014 bacteria. Once on a surface, bacteria start proliferating, while protecting themselves with a slime layer against the immune system and ...
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The main cause of failure of biomedical implants is bacterial infections. Despite all efforts, it will never be possible to completely free operating theaters from bacteria, as human bodies contain already 1014 bacteria. Once on a surface, bacteria start proliferating, while protecting themselves with a slime layer against the immune system and ...
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Ototoxic Effect of Quaternary Ammonium Compounds
Acta Oto-Laryngologica, 1982In earlier investigations by the author it has been shown that chlorhexidine, when introduced into the middle ear of guinea pigs, caused serious damage to the inner ear. The present investigation was performed in order to study if the quaternary ammonium compounds benzethonium chloride and benzalkonium chloride, frequently used for skin disinfection ...
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Resorcinol‐based Bolaamphiphilic Quaternary Ammonium Compounds
ChemMedChemAbstractQuaternary ammonium compounds (QACs) play crucial disinfectant roles in healthcare, industry, and domestic settings. Most commercially utilized QACs like benzalkonium chloride have a common architectural theme, leading to a rise in bacterial resistance and urgent need for novel structural classes.
Johanna Y. D. Asante +6 more
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2002
Quaternary ammonium chlorides (QACs) occupy a unique niche in the world of antimicrobial compounds. Rather than being a single, well-defined substance, as is the case for many such active ingredients, QACs are composed of a diverse, eclectic collection of substances that share a common chemical motif, namely a molecular structure containing a positively
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Quaternary ammonium chlorides (QACs) occupy a unique niche in the world of antimicrobial compounds. Rather than being a single, well-defined substance, as is the case for many such active ingredients, QACs are composed of a diverse, eclectic collection of substances that share a common chemical motif, namely a molecular structure containing a positively
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Quaternary Ammonium Compounds as Preservatives*
Journal of the American Pharmaceutical Association (Scientific ed.), 1947The antiseptics employed were cetyl pyridinium chloride (Ceepryn) and p‐tertiary octylphenoxyethoxyethyl dimethyl benzyl ammonium chloride (Phemerol). Very low concentrations of these antiseptics were found effective in preserving both gelatin and sucrose solutions.
L F, TICE, A W, MOORE
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Inclusion of Quaternary Ammonium Compounds by Calixarenes
Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 1994In weakly polar solvents, strong association occurs between calixarene anions and tetraalkylammonium cations, with the magnitude of the observed equilibrium constants depending upon the charge on the anion, the solvent, the ring size of the calixarene and the nature of the alkyl group of the cation. Large upfield shifts of the methyl resonances of the [
Jack M. Harrowfield +2 more
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New Quaternary Ammonium Compounds with Adrenomimetic Action
Science, 1960Quaternary salts of two triesters of p -dimethylaminothiophenol and phosphoric acid or thiophosphoric acid have effects similar to epinephrine on blood pressure, heart rate, and the nictitating membrane of the anesthetized cat. Two analogous compounds derived from phenol are depressor.
R A, LEHMAN, H A, JEWELL
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Dermatitis from quaternary ammonium compounds
Contact Dermatitis, 1975A, Garcia-Perez, M, Moran
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Virucidal activity of some quaternary ammonium compounds.
Arzneimittel-Forschung, 1978Four different quaternary ammonium compounds were tested by microtechniques for evaluating their activity against the type species of six viral groups very frequently involved in human and animal pathology. Three disinfectants showed good activity against five of the representative viruses under test, while the fourth proved less effective.
G.POLI +3 more
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