4 resultados para Niels Bohr
em Aston University Research Archive
Resumo:
All four of the most important figures in the early twentieth-century development of quantum physics-Niels Bohr, Erwin Schroedinger, Werner Heisenberg and Wolfgang Pauli-had strong interests in the traditional mind-brain, or 'hard,' problem. This paper reviews their approach to this problem, showing the influence of Bohr's complementarity thesis, the significance of Schroedinger's small book, 'What is life?,' the updated Platonism of Heisenberg and, perhaps most interesting of all, the interaction of Carl Jung and Wolfgang Pauli in the latter's search for a unification of mind and matter. © 2005 Elsevier Inc. All rights reserved.
Resumo:
Hat Heimat einen konkreten Ort oder handelt es sich um einen Raum, den man erfühlen, erinnern und erschmecken kann? Klassische/?hegemoniale Heimat-Konzepte basieren stark auf irrationalen Qualitäten, bei näherer Betrachtung/der wissenschaftlichen Analyse zeigt sich jedoch ein komplexes Zusammenspiel materieller und immaterieller Aspekte. Diesen Konstellationen gehen die Beiträge dieses Bandes nach. Dessen komparatistische Ausrichtung will über ein ‚Heimat‘ –Verständnis hinausweisen, das diesen Begriff allein auf deutschsprachige Kontexte reduziert. Der Ausrichtung des vorliegenden Sammelbandes entspricht die Vielfalt der behandelten Heimat-, Sprach- und Handlungsräume, die sich über u.a. Brasilien, Luxemburg, Russland, Ungarn, die Schweiz, die USA, Island, Mosambik, die Türkei und Österreich erstrecken. Dadurch entsteht ein heterogenes Nebeneinander von Heimat-Bildern und -konzepten – an die Stelle eines hegemonialen Begriffs tritt eine Pluralität, die der individuellen Herkunft und ihren spezifischen Erfahrungen und Erinnerungen Raum gibt.
Resumo:
Red blood cells (RBCs) are key players in systemic oxygen transport. RBCs respond to in vitro hypoxia through the so-called oxygen-dependent metabolic regulation, which involves the competitive binding of deoxyhemoglobin and glycolytic enzymes to the N-terminal cytosolic domain of band 3. This mechanism promotes the accumulation of 2,3-DPG, stabilizing the deoxygenated state of hemoglobin, and cytosol acidification, triggering oxygen off-loading through the Bohr effect. Despite in vitro studies, in vivo adaptations to hypoxia have not yet been completely elucidated. Within the framework of the AltitudeOmics study, erythrocytes were collected from 21 healthy volunteers at sea level, after exposure to high altitude (5260m) for 1, 7 and 16days, and following reascent after 7days at 1525m. UHPLC-MS metabolomics results were correlated to physiological and athletic performance parameters. Immediate metabolic adaptations were noted as early as a few hours from ascending to >5000m, and maintained for 16 days at high altitude. Consistent with the mechanisms elucidated in vitro, hypoxia promoted glycolysis and deregulated the pentose phosphate pathway, as well purine catabolism, glutathione homeostasis, arginine/nitric oxide and sulphur/H2S metabolism. Metabolic adaptations were preserved one week after descent, consistently with improved physical performances in comparison to the first ascendance, suggesting a mechanism of metabolic memory.