Results 291 to 300 of about 78,150 (329)
Electrokinetic Manipulations Combined With Direct and Ambient Ionization Mass Spectrometry
Mass Spectrometry Reviews, EarlyView.ABSTRACT Mass spectrometry (MS) is a powerful analytical technique that typically involves sample preparation and online analytical separation before MS detection. Traditional methods often face bottlenecks in sample preparation and analytical separation, despite the rapid detection capabilities of MS.
Nicholas E. Manicke +2 more
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Determination of Quaternary Ammonium Compounds
Journal of Pharmaceutical Sciences, 1961Abstract The official potassium ferricyanide assays of quaternary ammonium, preparations can be modified to include a potentiometric titration with silver nitrate instead of the suggested iodometric method for the determination of the excess ferricyanide. Sodium nitrite interferes with the ferricyanide assay methods.
J J, HEFFERREN, C, DIETZ
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Quaternary Ammonium Compound Toxicity in Chickens
Avian Diseases, 1982Two commercial White Leghorn flocks of 41,000 and 57,000 25-week-old hens experienced death losses of 676 and 1,089 birds in a week. Six birds from each flock were presented for necropsy to the Animal Disease Diagnostic Laboratory at Purdue University with a clinical history of excessive deaths, unsatisfactory production, and dehydration. Gross lesions
A S, Dhillon +2 more
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36. Savetovanje dezinfekcija, dezinsekcija i deratizacija jedan svet - jedno zdravlje - zbornik radova
Next to their positive role, microorganisms are associated with numerous undesirable effects, including many diseases, food spoilage, and decay. Humanity have been combating microorganisms for centuries. It was observed that water could be carried on long journeys in silver containers or with silver or copper coins, and food was preserved using salt ...
Nemanja Zdravković +6 more
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Next to their positive role, microorganisms are associated with numerous undesirable effects, including many diseases, food spoilage, and decay. Humanity have been combating microorganisms for centuries. It was observed that water could be carried on long journeys in silver containers or with silver or copper coins, and food was preserved using salt ...
Nemanja Zdravković +6 more
openaire +1 more source
Quaternary ammonium compounds and occupational asthma
International Archives of Occupational and Environmental Health, 2000Quaternary ammonium compounds, among which benzalkonium chloride is one of the best-known, are commonly used as antiseptics, disinfectants, detergents and preservatives. They can cause occupational asthma, which however, has been rarely reported so far, despite wide use of these products. We report three such cases.
A, Purohit +5 more
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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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