This brief review describes recent findings by the author and his co-workers in the field of
catalytic systems for the oxidation of saturated and aromatic hydrocarbons with molecular …

About 90 years ago, Henze discovered high levels of vanadium in the blood (coelomic) cells
of an ascidian collected from the Bay of Naples. His discovery attracted the interdisciplinary …

Spent vanadium catalysts of sulfuric acid production (main elemental composition in wt%:
7.5 V, 9.1 K, 10.2 S, 23.2 Si and 1.4 Fe) can be used as a secondary source of vanadium …

Since the beginning of the last century, it has been known that ascidians accumulate high
levels of a transition metal, vanadium, in their blood cells, although the mechanism for this …

The reduction of vanadium (V) to vanadium (IV) by oxalate in acidic media proceeds at 50°
C via two parallel pathways that involve activated states of compositions {VO2+; 2H+; …

The partial oxidation of toluene by hydrogen peroxide with catalytic amount of bis
(acetylacetonato) oxovanadium (VO (acac) 2) in acetic acid is studied in detail …

Vanadium has been produced from both primary and secondary sources having various
compositions. One of the most available sources of vanadium is vanadium pentoxide. In this …

Metal ions are required for physiologically essential functions such as metalloenzymatic
reactions, redox reactions, electron transfer, regulation of transcription factor activity, and …

Several species of ascidians (phylum Chordata, subphylum Urochordata) contain a group of
oligopeptides called “tunichromes” in their blood cells. These peptides have been implicated …

The unusual ascidian ability to accumulate high levels of vanadium ions at concentrations of
up to 350 mM, a 107-fold increase over that found in seawater, has been attracting …