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Animal experimentation is terminated by the euthanasia procedure in order to avoid pain and minimize suffering. Very little is known about the real time physiological changes taking place in the brain of animals during the euthanasia. Since there is no way to evaluate the suffering of animals under euthanasia, it is assumed that objective physiological changes taking place could serve as a good way to compare various types of euthanasia procedures. In the present study we compared the effect of euthanasia induced by i. v. injection of concentrated KCL to that of Taxan T-61 (a standard mixture used by veterinarians). The responses of the cat brain were evaluated by monitoring the hemodynamic (CBF), metabolic (NADH redox state), electrical (EcoG) and extracellular ion levels, as an indicator to the ionic homeostasis.

Preliminary results are presented of the third season of excavations at Saar, Bahrain, by the London-Bahrain Archaeological Expedition. Research at this second millennium BC site continued in the temple, as well as in parts of the upper town. Bedrock was reached at a depth of approximately 5.45 metres in the sondage below the temple. Several new buildings were found and work was completed in houses discovered in previous seasons. The article goes on to discuss the numerous seals and seal impressions found this season.

We develop deformation theory for abelian invariant complex structures on a nilmanifold, and prove that in this case the invariance property is preserved by the Kuranishi process. A purely algebraic condition characterizes the deformations leading again to abelian structures, and we prove that such deformations are unobstructed. Various examples illustrate the resulting theory, and the behavior possible in three complex dimensions.

${\mathrm{RuSr}}_{2}{\mathrm{GdCu}}_{2}{\mathrm{O}}_{8},$ in which magnetic order and superconductivity coexist with ${T}_{\mathrm{mag}}\ensuremath{\gg}{T}_{c},$ is a complex material which poses new and important questions to our understanding of the interplay between magnetic and superconducting order. Resistivity, Hall-effect, and thermopower measurements on sintered ceramic ${\mathrm{RuSr}}_{2}{\mathrm{GdCu}}_{2}{\mathrm{O}}_{8}$ are presented, together with results on a broad range of substituted analogs. The Hall effect and thermopower both show anomalous decreases below ${T}_{\mathrm{mag}},$ which may be explained within a simple two-band model by a transition from localized to more itinerant behavior in the ${\mathrm{RuO}}_{2}$ layer at ${T}_{\mathrm{mag}}.$