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Showing results 561 to 580 of 702
   Calcium transport in cardiovascular health and disease--the sarcolemmal calcium pump enters the stage.; ; Neyses, Ludwig  in Journal of Molecular and Cellular Cardiology (2005), 39(3), 403-6 Calcium is known to be one of the most important ionic regulators of the heart, where it has a crucial role in contraction-relaxation. Within a single beat of the cardiomyocyte there is a 100-fold ... [more ▼] Calcium is known to be one of the most important ionic regulators of the heart, where it has a crucial role in contraction-relaxation. Within a single beat of the cardiomyocyte there is a 100-fold increase in the cytosolic free Ca(2+) level, this must be returned to its original concentration in order to maintain the normal physiological function of the cell. Two of the mechanisms involved in returning the Ca(2+) concentration back to resting levels are located at the sarcolemma; the sodium/calcium exchanger (NCX) and the sarcolemmal calcium pump. Compared to the NCX the sarcolemmal calcium pump extrudes significantly less calcium from the cardiomyocyte and has long been thought to be involved in the maintenance of low diastolic calcium levels. This review will outline recent evidence suggesting that the sarcolemmal calcium pump may in fact play a key role in signal transduction in the cardiovascular system. [less ▲] Detailed reference viewed: 134 (1 UL)Extensive and intensive growth in a neoclassical frameworkIrmen, Andreas in Journal of Economic Dynamics and Control (2005), 29(8), 1427-1448 Extensive growth based on the expansion of inputs is likely to be subject to diminishing returns. Therefore it is often viewed as having no effect on per capita magnitudes in the long run. This Paper ... [more ▼] Extensive growth based on the expansion of inputs is likely to be subject to diminishing returns. Therefore it is often viewed as having no effect on per capita magnitudes in the long run. This Paper argues that periods of extensive growth through capital accumulation may be a precursor to periods of intensive growth during which output per unit of input grows through endogenous technical change. Such a sequence of stages of development occurs as capital accumulation affects the incentives to engage in labour-saving technical change. A steady rise in the capital-labour ratio affects the relative scarcity of factors of production, their (expected) relative price, and induces innovation investments.<P>(This abstract was borrowed from another version of this item.) [less ▲] Detailed reference viewed: 117 (1 UL) Pseudopath semiclassical approximation to transport through open quantum billiards: Dyson equation for diffractive scattering; ; et al in Physical Review. E. (2005), 72(3), We present a semiclassical theory for transport through open billiards of arbitrary convex shape that includes diffractively scattered paths at the lead openings. Starting from a Dyson equation for the ... [more ▼] We present a semiclassical theory for transport through open billiards of arbitrary convex shape that includes diffractively scattered paths at the lead openings. Starting from a Dyson equation for the semiclassical Green's function we develop a diagrammatic expansion that allows a systematic summation over classical and pseudopaths, the latter consisting of classical paths joined by diffractive scatterings ("kinks"). This renders the inclusion of an exponentially proliferating number of pseudopath combinations numerically tractable for both regular and chaotic billiards. For a circular billiard and the Bunimovich stadium the path sum leads to a good agreement with the quantum path length power spectrum up to long path length. Furthermore, we find excellent numerical agreement with experimental studies of quantum scattering in microwave billiards where pseudopaths provide a significant contribution. [less ▲] Detailed reference viewed: 121 (2 UL)Book review of : F. EDELMAYER, Söldner und Pensionäre. Das Netzwerk Philipps II. im Heiligen Römischen Reich, 2002Weis, Monique in Revue Belge de Philologie et d'Histoire (2005), 83 Detailed reference viewed: 9 (0 UL)Book review of : E.-B. KÖRBER, Habsburgs europäische Herrschaft. Von Karl V. bis zum Ende des 16. Jahrhunderts, 2002Weis, Monique in Revue Belge de Philologie et d'Histoire (2005), 83 Detailed reference viewed: 8 (0 UL)Book review of : A. GÖSSNER, Weltliche Kirchenhoheit und reichsstädtische Reformation. Die Augsburger Ratspolitik des « milten und mitleren weges » 1520-1534, 1999Weis, Monique in Revue Belge de Philologie et d'Histoire (2005), 83 Detailed reference viewed: 9 (0 UL)Sigismund von Luxemburg, König von Ungarn und Kaiser, 1387-1437, 08.06.2005 – 10.06.2005 LuxemburgUhrmacher, Martin in H-Soz-Kult: Kommunikation und Fachinformation für die Geschichtswissenschaften (2005) Vom 8. bis 10. Juni fand in Luxemburg eine internationale Tagung statt zum Thema Sigismund von Luxemburg, König von Ungarn und Kaiser, 1387-1437. Der Kongress stand im Vorfeld der von Ungarn und Luxemburg ... [more ▼] Vom 8. bis 10. Juni fand in Luxemburg eine internationale Tagung statt zum Thema Sigismund von Luxemburg, König von Ungarn und Kaiser, 1387-1437. Der Kongress stand im Vorfeld der von Ungarn und Luxemburg gemeinsam organisierten Ausstellung SIGISMUNDUS REX ET IMPERATOR. 1387-1437, die im nächsten Jahr in Budapest eröffnet wird (15. März - 18. Juni 2006) und anschließend nach Luxemburg kommt (13. Juli - 15. Oktober 2006). Er diente somit der wissenschaftlichen Standortbestimmung und der Diskussion des aktuellen Forschungsstandes zur Herrschaft Sigismunds von Luxemburg, König von Ungarn (1387), König (1410/11) und Kaiser (1433) des Heiligen Römischen Reiches, die von bedeutenden historischen und intellektuellen Umwälzungen geprägt war. Im Zentrum des Interesses standen weniger bekannte Aspekte der Persönlichkeit und des Wirkens von Sigismund sowie des Kunstschaffens seiner Zeit Die Referate behandelten dabei den Raum über Sigismunds Herrschaftsbereiche und das Heilige Römische Reich hinaus, er reichte vom skandinavisch-baltischen Raum über England, Frankreich, Burgund, die Eidgenossenschaft, Italien, Polen und den Balkan bis zum aufstrebenden Osmanischen Reich. Dieser große Wirkungsbereich Sigismunds spiegelte sich auch in der Referentenliste, die neben Teilnehmern aus Deutschland und Ungarn auch Referenten aus Tschechien, der Slowakei, Slowenien, Kroatien, der Schweiz, Italien, Frankreich, Österreich und den USA umfasste. [less ▲] Detailed reference viewed: 126 (3 UL)Organisation, Koordination und Implementierung eines „sozialen Frühwarnsystems für Hückeswagen“ als präventive Maßnahme der sozialräumlichen Planung.Biewers, Sandra ; ; Article for general public (2005) Detailed reference viewed: 45 (3 UL)Science without scientists: modern cooking in the eighteenth centuryTakats, Sean in Studies on Voltaire and the Eighteenth Century (2005), (12), 19-32 Detailed reference viewed: 22 (4 UL)Von der wundersamen Bildungsvermehrung durch RessourcenverknappungMein, Georg in kultuRRevolution (2005), 49 Detailed reference viewed: 306 (1 UL)Pragmatic scales and the (de)construction of cultural modelsWeber, Jean-Jacques in Language and Literature: Journal of the Poetics and Linguistics Association (2005), 14(1), 45-63 Detailed reference viewed: 51 (1 UL)Hyperideal circle patternsSchlenker, Jean-Marc in Mathematical Research Letters (2005), 12(1), 85--102 Detailed reference viewed: 143 (5 UL)Overdamping by weakly coupled environmentsEsposito, Massimiliano ; in Physical Review. A (2005), 72(6), Detailed reference viewed: 38 (1 UL)Die Bedeutung des Geschlechteraspektes für die berufliche und persönliche Entwicklung/Biographie von Erziehenden und Lehrenden. Triangulation der ErgebnisseBaltes-Löhr, Christel ; Brendel, Michelle ; Kerger, Sylvie et alReport (2005) Detailed reference viewed: 70 (4 UL)Die Bedeutung des Geschlechteraspektes für die berufliche und persönliche Entwicklung/Biographie von Erziehenden und LehrendenBaltes-Löhr, Christel ; Brendel, Michelle ; et alReport (2005) Detailed reference viewed: 71 (4 UL)Perspektiven der Frauen- und Genderforschung an der Universität LuxemburgBaltes-Löhr, Christel in Milmeister, Marianne (Ed.) Aspects de la recherche jeunesse: Diversité et genre (2005) Detailed reference viewed: 59 (3 UL)Integration of the gender aspect into curricula and practical training for teachers at preschools, at primary and secondary schoolsBaltes-Löhr, Christel ; Wiltzius, Martine Book published by Ministère de l'Egalite de Chances (2005) Detailed reference viewed: 60 (6 UL)L'intégration de la dimension “Genre” dans les curricula de la formation pratique du personnel einseignant du préscolaire, primaire et post-primaireBaltes-Löhr, Christel ; Wiltzius, Martine in Gender roles and stereotypes in education and training (2005) Detailed reference viewed: 74 (2 UL)Production of ultracold neutrons from a cold neutron beam on a 2H2 target; ; et al in Physical Review. C, Nuclear Physics (2005), 71 Detailed reference viewed: 50 (1 UL)Demonstration of the antiferroelectric aspect of the helical superstructures in SmC*, SmC$_α$* and SmC$_a$* liquid crystalsLagerwall, Jan in Physical Review. E ,Statistical, Nonlinear, and Soft Matter Physics (2005), 71(5), 051703 We show that the helical superstructure in chiral smectic-C-type liquid crystal phases can, if the pitch is short enough, give rise to the tristate switching characteristic of antiferroelectrics even if ... [more ▼] We show that the helical superstructure in chiral smectic-C-type liquid crystal phases can, if the pitch is short enough, give rise to the tristate switching characteristic of antiferroelectrics even if the local commen- surate order is synpolar as in the ordinary Sm-C* phase. Since the field-induced helix unwinding exhibits a distinct threshold, in contrast to mere helix distortion, two unwinding / rewinding peaks per half cycle of an applied triangular wave voltage can be seen in the current response. By considering this antiferroelectric aspect * of the helical modulation we give a simple explanation of why the ultrashort-pitch Sm-C phase exhibits antiferroelectric switching although its dielectric spectroscopy response is qualitatively identical to that of the synpolar Sm-C* phase. Using data from the compound MHPOCBC we show that the Sm-C* dielectric re- sponse is well described by continuum theory. We also demonstrate that, if the pitch is very short as in MHPOCBC, helix unwinding / rewinding leave characteristic traces in the electrooptic response even in the commensurately antiferroelectric antipolar Sm-C*a phase, distinguishable from the switching beween the antipolar and synpolar states of this phase. [less ▲] Detailed reference viewed: 332 (3 UL) |
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