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The electrochemistry of titanium tetrachloride has been examined in trialkyl-substituted imidazolium tetrafluoroborate at 65 °C. Ti(IV) reduction was studied with chronopotentiometry and cyclic voltammetry in melts with different concentrations of TiCl4. The diffusion coefficient of Ti(IV) ranged between 1.1·10−7 and 7·10−8 cm2 s−1. The electroreduction of Ti(IV) was found to proceed via the sequence of one-electron steps, the relative stability of the low valence intermediates being dependent on the concentration of TiCl4 in the electrolyte. The kinetics of an overlapping disproportionation reaction of Ti(II) was examined and its rate constant at low concentration (0.025 mol/l) of TiCl- was found to be k = 2 · 106 cm3 mol−1 s−1, Ti(0) being the final product of the stepwise reduction process at higher concentrations (0.03 - 0.14 mol/l).

This chapter presents a draft of a long-standing interdisciplinary project involving photogrammetry and archaeology, in which both sides tried to eliminate the gap between their disciplines. This is the Applikensigillata project which aimed to determine appliqué decorations in Italian terra sigillata. The cooperation of the different disciplines resulted in a substantial extension of the timetable. Although the project was relatively time consuming, it nevertheless provided results that were instrumental to archaeology. The project Italian terra sigillata of Noricum produced archaeological results. It produced correct drawings of the appliqué decorations through photogrammetry; it yielded a general catalogue; it opened a new field of results reflecting quality in both shapes and decorations; it debunked the old-myth of the carter-like organisation of Roman; and it eliminated surviving old catalogues based on the observation of a single piece.