Bestimmung des Siliciums in Ferrosilicium

Ohne Zusammenfassung     

Solution of the entropy crisis of supersymmetric theories

Most supersymmetric models possess a decoupled particle with mass of order M_W which is copiously produced in the early universe and whose decays produce huge amounts of entropy. We show how this problem is avoided in theories in which the hidden sector contains several light fields.     

Qualitativer und quantitativer Vergleich von Chromatogrammen unter Verwendung eines Rechners

Zusammenfassung Ein Computerprogramm zum Vergleich von Probe- mit Standardpeaks wird beschrieben. Die natürlichen Fehler eines Chromatographen, wie Temperatur- oder Druck-schwankungen, werden durch eine fortlaufende Anpassung der Erkennungsfenster ausgeglichen. Diese Methode gestattet sehr schmale Zeitfenster und verhindert größtenteils Doppelidentifikationen. Eine quantitative Analyse beginnt nach der Peakzuordnung. Jeder identifizierte Probepeak wird einem Ausreißertest nach Nalimov unterzogen. Zuletzt wird ein Vergleich der Flächen benützt, um eine quantitative Beziehung zwischen Probe und Standard zu erreichen.

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Qualitative and quantitative comparison of chromatograms by computer

Summary A computer program is described which allows the comparison of sample peaks with those of a standard. The errors produced by the chromatograph due to instability of inlet pressure or temperature are corrected by a consecutive adaption of time-windows of standard peaks. This method makes it possible to keep the time-windows for peak identification very small and to eliminate double identifications to a great extent. Quantitative analysis follows peak identification. Each sample peak has to pass a Nalimov test. A comparison of peak areas is finally used to establish a quantitative relation between sample and standard.

     

Bestimmung von Löschquerschnitten durch Lebensdauermessungen am Natrium-32 P-Zustand

The natural lifetime of the sodium resonance state has been measured using the phase-shift method. By addition of molecular gases the lifetime is shortened because of the nonradiative decay induced in collisions with molecules. The cross sections for such quenching collisions are obtained for various gases from an analysis of the dependence of the effective lifetime on the gas pressures.     

Note on linear systems derivable from a variational principle

This paper is a complementation of a previous one, in which we studied the problem of converting general linear second-order equations into Euler-Lagrange equations through multiplication by a time-dependent matrix. The present paper discusses the possibility of having multipliers depending on coordinates and velocities too.