[Problems of microbial contamination in pharmaceutical services (author's transl)]. / Probleme der mikrobiellen Kontamination in Einrichtungen des Apothekenwesens.

There are only few data about the microbial contents in the workrooms of pharmacies. Up to now, neither the kinds of bacteria and yeasts encountered, nor their resistance has been determined. The "personal hygiene of the staff' is studied on the example of their hands, towels and protective clothes. The kinds of bacteria found on surfaces used for pharmaceutical work are analysed. Proposals for limiting the germ content in the air are commented upon. Health measures are elaborated on the basis of the results from the present investigation.

Quenching problems in inorganic luminescent materials.

Quenching problems were investigated on inorganic luminescent materials for fluorescent lamps. It could be shown that the decrease of luminescence intensity under the influence of short-wave UV radiation is not only a function of the irradiation time but also depends strongly on the activator concentration and a mechanical treatment. The photochemical luminescence quenching represented by the intensity loss as a function of the irradiation time can be expressed as a sum of three exponential terms, constants and exponents of which contain the concentration of virgin and UV induced lattice defects in both the bulk and the surface. To explain the complex quenching process the theory of radiationless energy transport was used.