Authors:Tamás Csermely, Georg Petroianu, Kamil Kuca, Józsel Fűrész, Ferenc Darvas, Zsolt Gulyás, Rudolf Laufer, and Huba Kalász
Quaternary pyridinium aldoximes have been analyzed by thin-layer chromatography. Their separation was adequate when silica plates were used with a mobile phase with a high water content. As a consequence of their limited migration, reversed-phase TLC was not appropriate for determination of the lipophilicity of quaternary pyridinium aldoximes. Displacement TLC of some quaternary pyridinium aldoximes is, nevertheless, possible using silica as stationary phase with water-acetone-hydrochloric acid mobile phases. Normal-phase TLC with different concentrations of organic modifier gave a series of
values for the pyridinium aldoximes. Approximation of the different plots of
against organic modifier concentration to straight lines afforded
values and the slopes of the lines. The
values and the slopes both serve as indicators of the hydrophilic character of the compounds.
Authors:Gellért Balázs Karvaly, Kornélia Tekes, Zoltán Szimrók, József FŰrÉsz, Kamil KuČa, and Huba Kalász
aldoxime groups (K-117, K-269) or an aldoxime and an amide ligand (K-27, K-48, K-127, K-203, K-867, K-868 and K-870). K-269 contains an α-amino methylamide functional group. The crosslink is a non-branched (K-48, K-347, K-868) or branched alkyl (K-27), or
Authors:I Paskaleva, A G Aronov, R R Seroglazov, and T I Aronova
This work focuses on the assessment of seismic risk issues associated with the potassium salt deposit of Provadia and Soligorsk, with the monitoring provided by Belarusian and Bulgarian specialists in the framework of a bilateral project. The long-term studies 1983-2005 of the only terrestrial Bulgarian salt deposit (Provadia, φ = 43.06ºN, λ = 27.45ºE) and Belarusian (Starobin φ = 52.84ºN, λ = 27.47ºE) in connection with the observed higher seismic activity and probable manifestations of technogenic seismicity in the region is presented. The characteristic features of the seismic processes as the identity of the curves of recurrence of seismic events of the energy range of 4-8 are discussed. A quasi-periodic character of the seismicity activation in time against the general trend of seismicity activation is established. It is shown that the zones of the epicenters of the seismic events are larger that mining areas. Some differences in the pattern of seismic processes, such as: 1. the seismic activity in the range of small energies (K=4-8) is higher in the Soligorsk region; 2. events of the higher energy class, K≯9 are characteristic of the Provadia region.
Czene-Ottományi 2007 = A. Czene— K. Ottományi : 39. Budakeszi, Szőlőskert-Tangazdaság (MR T 7. k. 4/8 lh.). In: J. Kisfaludi (ed.): Régészeti kutatások Magyarországon 2006 — Achaeological Investigations in Hungary 2006. Budapest 2007, 162
standardized CuO sample. The experiments were performed at 383 K [ 48 ]. The horizontal line allows for calculating the molar heats of chemisorption of the oxygen removed in these experiments. The molar heat of O 2 chemisorption near the S-state of CuO is