H. Kleszczyńska3, M. Oświęcimskab, S. Witekb and S. Przestalskia a Department of Physics and Biophysics, Agricultural University, Norwida 25, 50-375 Wroclaw, Poland b Department of Chemistry, Technical University of Wroclaw, Wyb. Wyspiariskiego 27, 50-370 Wroclaw, Poland Z. Naturforsch. 53c, 425-430 (1998); received January 26/March 16, 1998 Antioxidants, Lipid Oxidation, Erythrocyte Ghost, Qua...

A capillary electrophoretic method for resolving phenolic compounds found in grape seed extracts was developed using a quaternary ammonium salt as the main electrolyte solution. Seven polyphenols were separated and identified. The separation mechanism seems to involve association between quaternary ammonium cations and the polyphenols. Migration times roughly correlate with the size of the know...

Polymeric materials containing quaternary ammonium and/or phosphonium salts have been extensively studied and applied to a variety of antimicrobial-relevant areas. With various architectures, polymeric quaternary ammonium/phosphonium salts were prepared using different approaches, exhibiting different antimicrobial activities and potential applications. This review focuses on the state of the a...

The study of good nonregular fractional factorial designs has received significant attention over the last two decades. Recent research indicates that designs constructed from quaternary codes (QC) are very promising in this regard. The present paper shows how a trigonometric approach can facilitate a systematic understanding of such QC designs and lead to new theoretical results covering hithe...