Chemische Notizen

Abstract

Noch ist zu bemerken, dass die Pattinson'sche Methode in der Regel ebenfalls eine Umschmelzung des Bleies verlangt. Diese wird in grossen Oefen vorgenommen, in welchen man das Metall, ohne es umzuriihren, ziemlich lange flus$ig erhalt. LIX.

Thermorubin biosynthesis: evidence for the involvement of both salicylic acid and an undecaketide

“…The possibility that the biosynthesis occurs according to this Scheme has been recently demonstrated chemically. 6 The mixed biosynthesis either occurs with salicylic acid as the starter unit for the growth of the undecaketide chain or with the condensation between a preformed undecaketide, or its aromatic derivative, and activated salicylic acid. Values in parenthesis may be interchanged.…”

Unruh Effect as Particular Frenet-Serret Vacuum Radiation and Detection Proposals

“…Their approach successfully provides the observed maximum polarization of electrons at storage rings, P max = 8 √ 3 15 = 0.924. 11 Besides, the circular vacuum noise is not sufficiently "universal" since it always depends on both acceleration and velocity. This appears as a 'drawback' of the storage ring electron radiometry, 12 not to mention the very intricate spin physics.…”

Polyisobutene Degradation in Laminar Flow: The Effect on Molecular Weight Distribution

“…Earlier results have indicated that this technique has provided one of the first clear cases of polymer degradation due to the extending forces in laminar flow. 4 Shear rates and stresses arc variable and extend up to those existing in high speed machine elements, ca. lo6 sec-' and lo6 dyne/cm.2.…”