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[en] Present article is devoted to stimulant properties of coordination compounds. It was defined that the moistening of cotton seeds by water-soluble polymer with coordination compounds additives increases the sowing quality of cotton seeds. As stimulants the coordination compounds of iron with anions of succinic and ethylen-diamin-disuccinic acids were used.
[en] A process of Bulk Oxalic Acid (BOA) chemical cleaning was performed for Tank 12H during June and July of 2013 to remove all or a portion of the approximately 4400 gallon sludge heel. Three strikes of oxalic acid (nominally 4 wt % or 2 wt %) were used at 55 deg C and tank volumes of 96- to 140-thousand gallons. This report details the sample analysis of a scrape sample taken prior to BOA cleaning and dip samples taken during BOA cleaning. It also documents a rudimentary material balance for the Tank 12H cleaning results
[en] Polarographic reduction of the maleic and the fumaric acid complexes of cadmium and lead was studied at 300C and ionic strength 2.0. The overall stability constants of the complex species present in these systems obtained by the Deford and Hume's graphical method of analysis are reported and plots of percentage distribution of various species present in a system vs.log ligand concentration are presented for all the systems studied. (author)
[en] The subject of the present thesis involves the determination of the first and the second dissociation constants of succinic acid in 1,3-dimethyl urea+water and in tetramethyl urea+water mixtures from electromotive force measurements of cells without transference in the temperature range (278.15-318.15)K .(29 tabs., 21 figs., 71 refs., 1 app.)
[en] The work is devoted to study of process of free radicals inactivation and prevent the development of chain peroxidation, as a result of interaction with succinic acid in an intensive care complex. (author)