Overall, our results provide a critical evaluation of the views of the general public with regard to genetics and genetic testing services in Greece and should serve as a model for replication in other populations.
Selected registration schemes in case of ILD CT follow-up analysis indicate the significance of adaptive stochastic gradient descent optimizer, as well as the importance of combined rigid and nonrigid schemes providing high accuracy and time efficiency. The selected optimal deformable registration schemes are equivalent in terms of their accuracy and thus compatible in terms of their clinical outcome.
ZUSAMMENFASSUNG:Kinetische Untersuchungen iiber die Umsetzung von Lithium, Natrium und Kalium mit Baumwollcellulose unterschiedlicher physikalischer Struktur in fliissigem Ammoniak ergaben Hinweise zur Struktur der Cellulose im ammoniakgequollenen Zustand. Zu Beginn reagierten die Alkalimetalle relativ schnell rnit den leicht zuganglichen Hydroxylgruppen der Cellulose auf der Oberflache von iibermolekularen Struktureinheiten. Ihr Anteil war etwa gleich groR, wie man ihn auch durch Deuteriumaustausch in D 2 0 findet. Mit dem geordneten NH3-Cellulose-Schichtgitter reagierte dann K/NH3 nicht mehr, wahrend sich Na/NH3 in langsamer Reaktion rnit konstanter Geschwindigkeit weiter umsetzte. Schneller war die Reaktion rnit Li/NH3 (Reaktion erster Ordnung beziiglich Cellulose), wobei sich in Abhangigkeit von der Gitterstruktur der eingesetzten Cellulose (Cellulose I, 11, 111) charakteristische Unterschiede ergaben, die auf das Vorliegen unterschiedlicher NH3-Cellulose-Komplexe zuriickgefuhrt wurden. Aus Baumwollcellulose wurde praktisch ohne Kettenabbau 2,3,6-Tri-0-lithiumcellulose erhalten, die infrarotspektroskopisch, thermoanalytisch und durch Rontgenweitwinkelmessung charakterisiert wurde. Letztere Messungen zeigten, daB Cellulose mit Li/NH3 nach Art einer Schichtgitterreaktion reagiert.
SUMMARY:Structural data of ammonia swollen cellulose were obtained by kinetic investigations of the reaction of lithium, sodium and potassium with cotton fibers in liquid ammonia. The alkali metals reacted in a relatively rapid initial reaction with the accessible hydroxyl groups on the surface of structural units in the cellulose. The accessibility data found corresponded to those obtained by deuterium exchange in DzO. While K/NH3 did not react further with the ordered NH3-cellulose a slow attack was found by Na/NH3 with a constant rate. Faster was the reaction with Li/NH3 (first order in cellulose). Thereby,
81K. Bredereck und G. Vlachopoulos characteristic differences were found between the used cellulose of differently ordered structures (cellulose I, 11, 111). This was traced back to the formation of different NH3-cellulose-adducts. 2,3,6-Tri-0-lithiumcellulose was obtained from cotton cellulose without chain degradation. The lithium cellulosate was characterized by infrared spectroscopy, thermoanalytic investigations and by X-ray diffractions. Following measurements showed that cellulose reacted with Li/NH3 by a sheet lattice reaction.
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