We consider the problem of distinguishing between a set of arbitrary quantum states in a setting in which the time available to perform the measurement is limited. We provide simple upper bounds on how well we can perform state discrimination in a given time as a function of either the average energy or the range of energies available during the measurement. We exhibit a specific strategy that nearly attains this bound. Finally, we consider several applications of our result. Firstly, we obtain a time-dependent Tsirelson's bound that limits the extent of the Bell inequality violation that can be in principle be demonstrated in a given time t. Secondly, we obtain a Margolus-Levitin type bound when considering the special case of distinguishing orthogonal pure states.

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Glycol monoesters were produced by oxidation of acetals with oxygen, hydroperoxides, hydrogen peroxide, hydrotrioxide and ozon. Addition of salts of metals of variable valency and crown‐ether substantially increase the rate of oxidation and hydroxylation. The most efficient oxidizer is ozon.

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Durch Erwärmen von Dimethoxymethan (I) mit äquimolaren Mengen der Acetale (II) in Gegenwart aprotischer Säuren wie BF3‐diethylether (a), AlCl3 (b), F eC13 (c), SbClz (d), ZnCl2 (e) oder von Kationit KU‐2 (f) werden die unsymm. Formale (III) dargestellt; analog erhält man die Acetale (VI); Reaktionen von (I) mit den Acetalen (V) in Gegenwart von Kationit KU‐2 liefern Gemische der Acetale (VI) (Ausb. 5 bis 10%) mit Formalen des Typs (III) (30‐36%) und (II) (7‐10%) sowie (IV) (25‐3l%).