A Morarian age for the ‘younger Moines’ of central and western Scotland
MUCH of our recent knowledge of the Moine metasediments1,2, which extend from the Moine Thrust across the Great Glen Fault to the boundary of the Dalradian Supergroup3,4 (Fig. 1), stems from the western Moine region. Here, late-Precambrian, Morarian ages (740–780 Myr) have been established from pegmatites in the Morar Division5, and a Grenvillian age (1,030 ±50 Myr) from the Granitic Gneiss of Ardgour in the Glenfinnan Division6. The ‘Central Highland Granulites’, generally regarded as ‘younger Moine’2,6, are little known geologically. Here we briefly outline the results of field (by M.A.J.P.) and radiometric investigations (by O.v.B.) in the Central Highland Granulites and the western Moines, which have fundamental implications for the evolution of these extensive metamorphic rocks, and for the nature of the Grenvillian–Caledonian interval in this sector of the North Atlantic Crust.
Brain α-tocopherol levels are not altered following ischemia/reperfusion-induced cerebral injury in rats and gerbils
alpha-Tocopherol (alpha-TC) is considered an important endogenous brain antioxidant. The utility of brain alpha-TC levels as an index of in vivo lipid peroxidation has recently been suggested. Therefore, we explored the significance of alpha-TC levels in brains to ischemic insults associated with global or focal cerebral ischemia. Four ischemic models were used and alpha-TC was measured by HPLC. Brain alpha-TC levels in gerbils exposed to 20 min bilateral carotid artery occlusion (CAO) and 60 min reperfusion was 10.8 +/- 2.1 micrograms/g (x +/- S.D., n = 6) vs. 10.8 +/- 1.8 micrograms/g (n = 6) in sham controls. In gerbils subjected to 3 h unilateral CAO and 2 h RP, a procedure marked by neurological abnormalities, brain alpha-TC levels of ischemic and non-ischemic hemispheres were essentially the same (10.7 +/- 1.6 vs. 10.1 +/- 1.4 micrograms/g, n = 4). In rats subjected to 80 min unilateral middle cerebral artery occlusion followed by 60 min reperfusion, or 6 h occlusion without reperfusion, the brain alpha-TC levels in ipsilateral ischemic and contralateral non-ischemic cortex were not different (12.1 +/- 1.2 vs. 11.9 +/- 2.6 micrograms/g or 12.2 +/- 1.6 vs. 13.4 +/- 1.2 micrograms/g, n = 4-8). Our results demonstrated that brain alpha-TC levels can not be used as index of ischemia/reperfusion related lipid peroxidation or tissue injury.
The politics of affect and emotion in contemporary Latin American cinema : Argentina, Brazil, Cuba, and Mexico
Between Neo-realist Sentimentality and Modernist Shock: New Latin American Cinema and Beyond Thrilling Histories: Questions of Genre and History Affecting Legacies: Contemporary Structures of Feeling Alien/Nation: Contemporary Youth in Film Emotional Investments: Global Networks and Transnational Affective Communities