Nanoscale imaging and control of altermagnetism in MnTe.

Nanoscale detection and control of the magnetic order underpins a spectrum of condensed-matter research and device functionalities involving magnetism. The key principle involved is the breaking of time-reversal symmetry, which in ferromagnets is generated by an internal magnetization. However, the presence of a net magnetization limits device scalability and compatibility with phases, such as superconductors and topological insulators.

Effects of an extract of Ginkgo Biloba (EGB 761) on "learned helplessness" and other models of stress in rodents.

The effects of repeated oral administration of an extract of Ginkgo Biloba (EGB 761) on various behavioral models of stress in rodents were investigated. The models in rats included "learned helplessness," shock-suppressed licking (Vogel conflict test) and forced swimming-induced immobility ("behavioral despair"). The models in mice included shock-suppressed exploration (four plates test), spontaneous exploration (staircase test) and food consumption in a novel situation (emotional hypophagia).

Absence of amnesia induction in mice with hydroxyzine in comparison with three other minor tranquillizers.

Hydroxyzine (Atarax) was compared with three traditional anxiolytics (diazepam, meprobamate, triazolam) for potential amnesic activity in a step-through passive avoidance task in the mouse. The doses investigated were: hydroxyzine (4, 8 and 16 mg/kg); diazepam (0.25, 0.