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Pirozerskii A.L.,Saint Petersburg State University | Charnaya E.V.,Saint Petersburg State University | Lee M.K.,National Cheng Kung University | Lee M.K.,Instrument Center at | And 7 more authors.
Acoustical Physics | Year: 2016

The paper presents the results of studying the crystallization and melting processes of Ga–In eutectic alloys, which are embedded in opal matrices, using acoustic and NMR methods. The indium concentrations in the alloys were 4, 6, 9, and 15 at %. Measurements were performed upon cooling from room temperature to complete crystallization of the alloys and subsequent heating. It is revealed how the size effects and alloy composition influence the formation of phases with α- and β-Ga structures and on changes in the melting-temperature ranges. A difference was observed between the results obtained using acoustic and NMR methods, which was attributed to different temperature measurement conditions. © 2016, Pleiades Publishing, Ltd. Source

Semenova I.S.,RAS N. D. Zelinsky Institute of Organic Chemistry | Levchenko K.S.,Tekhnomash Central Research Technological Institute | Yarovenko V.N.,RAS N. D. Zelinsky Institute of Organic Chemistry | Krayushkin M.M.,RAS N. D. Zelinsky Institute of Organic Chemistry | And 3 more authors.
Russian Chemical Bulletin | Year: 2012

A synthesis of photosensitive 3-acyl-2-hetarylchromones containing bromomethyl group in the 3-aroyl fragment and their further modification by the reactions with N-, S- and O-nucleophiles are described. A dependence of spectral properties from the structure of compounds was studied. © 2012 Springer Science+Business Media New York. Source

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