асоціація

Cold chain development in Ukraine

This article provide the concept of cold chain, define the purpose of development, key elements and stages of organizing refrigeration circuit. The share of perishable products in total domestic retail trade is revealed. The development of the national cold chain is regarded from the standpoint of implementation of intelligent systems for monitoring of perishable goods in real time.

Peculiarities of the formation of groups of related enterprises in Ukraine and their manageme

The basic legal and economic principles for the formation of groups of related companies
as business system in Ukraine have been analyzed. It was found out that the modern group of
related enterprises have complex multilevels organizational structure, as each of the
participants of the economic entity (each company) can have both an extensive network of
structural subdivisions (branches and representative offices), subsidiaries and participate in
joint activities. This group of companies determined that for business diversification and

Association of Thymolsulfonephthalein and Cresolsulfonephthalein Anions with Cationic Cyanines in Aqueous Solution

The formation of associates between one- or two-charged anions of sulfonephthalein dyes – thymolsulfonephthalein, cresolsulfonephthalein – and cyanine cations (pinacyanol, quinaldine red) has been considered in aqueous solution. Equilibrium association constants have been determined using spectrophotometric data. By semiempirical methods the enthalpy of formation and the eventual structure of ions and associates have been established.

Association of Complex Ferrumcyanide Anions with Pinacyanol Cation in Aqueous Solution

The possibility of associates formation between complex ferrumcyanide anions [Fe(CN)6]3–, [Fe(CN)6]4– and cationic polymethine dye pinacyanol in aqueous solution has been investigated. Energetic characteristics and the structures of associates were determined and the influence of ionic surfactants on the associates has been considered.

Електрична провідність та міжчастинкові взаємодії в розчинах 1-1 електролітів в пропіленкарбонаті у широкому інтервалі температур

Представлені результати кондуктометричного дослідження розчинів деяких 1-1 електролітів в пропіленкарбонаті в інтервалі температур 298–398 K. З використанням розширенного рівняння електричної провідності Лі-Уітона визначені константи йонної асоціації. Встановлено, що LiClO4 в пропіленкарбонаті є неасоційованим електролітом. Для врахування динаміки йонної асоціації проведенo поділ на йонні складові електричної провідності в широкому інтервалі температур.