Acid or base concentrations can be determined by coulometric titration. A new alliridium oxide sensor-actuator device is presented, of which the titrant is generated by a reversible redox reaction occurring in the electroactive iridium oxide actuator electrode, and the equivalence point in the titration curve is detected by the pH-sensitive iridium oxide sensor. The advantage with respect to th...

..................................................................................................................................... 3 Acknowledgements .................................................................................................................... 4 List of publications ...........................................................................................................

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Introduction Hyperpolarized noble gas magnetic resonance imaging (HP gas MRI) is a new and innovative imaging method that has made it possible, for the first time, to obtain high resolution MR images of air-filled organs such as the lungs, as well as lipid rich tissue such as the brain. Unlike conventional MRI which relies on the detection of water protons in biological tissue, HP gas MRI is ba...

[1] Noble gas concentrations and isotopic ratios are presented for 38 deep ( 0.5–3.6 km) brine samples in the Michigan Basin. These brine samples clearly show the presence of an important crustal component of He, Ne, Ar, and Xe. Both Arcrust and Xecrust display the presence of a strong vertical gradient along the sedimentary strata of the basin. We show that the in situ production for these two...