The effect of topical anesthesia on vocal fold motion

The objective of this study was to determine if topical anesthesia to the larynx and pharynx affects vocal fold motion during dynamic voice evaluation with transnasal flexible endoscopy. Transnasal dynamic laryngeal examinations of 10 patients with no voice complaints were evaluated by five blinded fellowship-trained laryngologists. Each patient was examined before and after application of topical anesthetic. Reviewers rated briskness of right and left vocal fold movement and longitudinal tension on a visual analogue scale. Statistical comparisons were made between individual subject scores before and after anesthetic application. Inter-rater reliability was also assessed. No statistical difference was observed between subject scores before and after anesthetic application. Average intraclass correlation coefficients were 0.643 and 0.591 for pre- and postanesthesia scores, respectively. Application of topical anesthesia to the larynx and pharynx does not affect vocal fold motion.     

New Ambidentate Ligands—Derivatives of 1,2-Benzothiazine-1,1-Dioxide

Russian Journal of Coordination Chemistry -     

New magnetically active metal complexes of tridentate Schiff bases of phenylazosalicylaldehyde

The bidentate chelate Cu(II) complexes of phenylazosalicylaldehyde azomethines are synthesized for the first time and their magnetic properties are studied. The complexes with the intermetallic bridge of the nitrogen atoms are characterized by the antiferromagnetic interaction, whereas the ferromagnetic exchange is typical of analogous coordination compounds with the sulfur bridge.     

Polarographic Study of the Antioxidant Activity of Amino Acids and Proteins

Classical polarography and cyclic voltammetry were used to study the effect of a series of water-soluble amino acids and serum albumins on oxygen reduction in aqueous solutions. Positive or negative shifts of the reduction potential of oxygen were revealed, depending the nature of the compounds. The feasibility of polarographic methods for studying antioxidant properties of compounds was demonstrated.     

Acyl group conformations in azole derivatives

The conformations of a number of aldo and keto derivatives of benzimidazole and pyrazole were established from their dipole moments. Several factors which determine the spatial orientation of the carbonyl group are discussed.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1556–1558, November, 1970.     

Nitrogen-tellurium heterocycles

Cyclization of previously isolated and purified N-acyl derivatives of -methyltelluroaniline under the influence of POCl₃ leads to 2-R-benzotellurazoles in yields of 35–65%. 1,1-Dichloro-2-R-benzotellurazoles are intermediates in this reaction.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 276–278, February, 1988.