Photosensitivity of infectious, haemagglutinating and neuraminidase activities of influenza virus has been determined experimentally. The photosensitivity of infectious activity of type B (strain Hongkong/8/73) influenza virus ws found to be higher than that of type A strains NIB-4 (N3N2-3), Leningrad/399/76 (H3N2-3) and NIB-6 (H1N1). The data obtained may be used for the determination of conditions of UV-irradiation for preparation of UV-inactivated antiviral vaccines.
A very efficient ESR spectrometer was applied to the measurement of the stationary concentration of macroradicals in homogeneous polymerization. From these data the rate constants of chain propagation and chain termination for the polymerizations of methyl methacrylate and vinyl acetate were found in a direct way. Activation energies of these elementary reactions were measured.
ZUSAMMENFASSUNG:Fur die Bestimmung der stationaren Konzentration von Makroradikalen bei der homogenen Polymerisation wurde ein sehr wirksames ESR Spektrometer eingesetzt. Aus den erhaltenen Daten wurden die Geschwindigkeitskonstanten des Kettenwachstums und Kettenabbruchs fur die Polymerisationen von Methylmethacrylat und von Vinylacetat auf direktem Weg erhalten. Die Aktivierungsenergien dieser Elementarreaktionen wurden gemessen.
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