The possible protective action of L-carnitine on neuronal excitability was studied in 21-day-old male Wistar rats with implanted electrodes. Administration of L-carnitine did not change the elicitation and duration of the epileptic seizures (cortical afterdischarges, ADs) in rats under normobaric oxygen atmosphere conditions. However, in animals exposed to 30 min hypobaric hypoxia the duration of the ADs was shortened after the second, fourth and sixth stimulation (in comparison with the first evoked ADs) while carnitine-treated rats retained their neuronal excitability and the duration of ADs was shortened only after the third stimulation., D. Marešová, H. Rauchová, K. Jandová, I. Valkounová, J. Koudelová, S. Trojan., and Obsahuje bibliografii
Kniha podle recenzenta náleží k inspirativnímu proudu angloamerické historiografie orientovanému na bádání o ruských revolucích a počátcích sovětského režimu. Autor v ní zkoumá sociální strategie, s nimiž se příslušníci vrstev šlechty, statkářů a důstojníků, souhrnně označovaných jako carské elity, vyrovnávali s prudkými změnami politických a společenských poměrů v ruských revolucích roku 1917., This work, according to the reviewer, is in the inspiring current of Anglo-American historiography of the Russian revolutions and the beginnings of the Soviet régime. In this publication the author considers the social strategies employed by members of the aristocracy, landowning classes, and the military – which he groups together under the label ‘Tsarist élite’ – to deal with the precipitous political and social changes brought about by the Russian revolutions of 1917., and [autor recenze] Dalibor Vácha.
Let R be an associative ring with identity and F a class of R-modules. In this article: we first give a detailed treatment of Cartan-Eilenberg F complexes and extend the basic properties of the class F to the class CE(F). Secondly, we study and give some equivalent characterizations of Cartan-Eilenberg projective, injective and flat complexes which are similar to projective, injective and flat modules, respectively. As applications, we characterize some classical rings in terms of these complexes, including coherent, Noetherian, von Neumann regular rings, QF rings, semisimple rings, hereditary rings and perfect rings., Xiaorui Zhai, Chunxia Zhang., and Obsahuje seznam literatury