Application of dn/dc data for the determination of partial specific volumes of dissolved macromolecules. II. Partial specific volume of ovalbumin in aqueous solution

The theory of an interferometric method for determining partial specific volumes of macromolecules is briefly reviewed. The experimental technique developed in this laboratory is described. Detailed results are given on the partial specific volume of ovalbumin in aqueous solution and its dependence on pH and KCl concentration. The results are compared, as far as possible, with dilatometric results obtained in another laboratory. The contribution of a change in partial specific volume of the macromolecules and in the partial specific volume of the water associated with them to the results is analyzed, and the scope of a possible complication due to changes in molecular polarizability is pointed out.     

Phonon spectral function of a superconductor

The phonon spectral function of an acoustic phonon in a BCS superconductor is calculated at zero temperature and compared to the result for the normal metal. Shifts are found in the frequency and linewidth of the phonon depending on its wavevector. In addition to the phonon, the spectral function shows a structure around the gap energy of the superconductor, reflecting the increased polarizability of the superconducting electrons at this energy.     

Critical behavior and coexistence near a superconducting-ferromagnetic multicritical point

It is shown that in the vicinity of the multicritical transition point of a ferromagnetic cuperconductor a) critical fluctuations of the superconducting order parameter should become observable in 3 dimensions, b) for planar magnetic ordering magnetism and superconductivity should coexist.     

Eine gravimetrische Bestimmung von Metallen und Wasser in organischen Verbindungen

Ohne Zusammenfassung     

Eine Methode zur Mikrobestimmung von Uran-235 in bestrahlten Graphit-Brennstoflsystemen

Ohne Zusammenfassung     

Ein anpassungsf?higes kombiniertes Analysenger?t zur Messung des Ozon- und Schwefeldioxidgehaltes

Ohne Zusammenfassung