898 resultados para Extrusion dies
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Bibliogr. Nachweis: Geschichtsblätter / Hogenberg, Nr. 364
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Religiöser Text über d. Alter
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Digitalisat des Exemplars Mus W 47 Nr. 1
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Signatur des Originals: S 36/F10269
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Signatur des Originals: S 36/G04528
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Enth.: Vox prima, vox secunda, vox tertia, org
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Pie de imp. tomado del colofón en 2[rum]6v
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Contiene además del Establiment de 1630, la conclusión de la Sentencia de 18 de noviembre de 1693 y de la Deliberación del Col.legi de Corredors de 13 de noviembre 1694
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Tit. tomado del principio de texto
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Hay un ejemplar encuadernado con: Romans, y coloqui nou, pera divertir el humor y desterrar la melancolia, yà que no tenim dinès ... (NP849.91/3085).
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Hay un ejemplar encuadernado con: Don Christofol de Cardona ... Balle General de la present Ciutat y Regne de Valencia : (XVIII/1687).
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During illumination, Ca2+ enters fly photoreceptor cells through light-activated channels that are located in the rhabdomere, the compartment specialized for phototransduction. From the rhabdomere, Ca2+ diffuses into the cell body. We visualize this process by rapidly imaging the fluorescence in a cross section of a photoreceptor cell injected with a fluorescent Ca2+ indicator in vivo. The free Ca2+ concentration in the rhabdomere shows a very fast and large transient shortly after light onset. The free Ca2+ concentration in the cell body rises more slowly and displays a much smaller transient. After ≈400 ms of light stimulation, the Ca2+ concentration in both compartments reaches a steady state, indicating that thereafter an amount of Ca2+, equivalent to the amount of Ca2+ flowing into the cell, is extruded. Quantitative analysis demonstrates that during the steady state, the free Ca2+ concentration in the rhabdomere and throughout the cell body is the same. This shows that Ca2+ extrusion takes place very close to the location of Ca2+ influx, the rhabdomere, because otherwise gradients in the steady-state distribution of Ca2+ should be measured. The close colocalization of Ca2+ influx and Ca2+ extrusion ensures that, after turning off the light, Ca2+ removal from the rhabdomere is faster than from the cell body. This is functionally significant because it ensures rapid dark adaptation.