[en] The best measuring parameters of EPR/DL-α-alanine dosemeter have been described. That parameters will be applied during the use of DL-α-alanine as a ionizing radiation dosemeter. (author)

[en] Dosimetric properties of two kinds of clear polymethylmethacrylate (PMMA)and one kind of polystyrene (PS) sheets in technological accelerator irradiations, are presented. Absorbance of the sheets and its dependence on the dose have been measured at a suitable wavelength using a UV/VIS spectrophotometer. Both kind PMMA can be used for technological dose measurements but each of them in the different range of the doses (∼ 3 to ∼30 kGy and ∼ 30 to above 200 kGy). Heating the samples after irradiation accelerates the stabilization of the absorbance, which change slowly during the storage of the samples if not heated.Absorbance of clear PS sheets decreases very much during the storage after irradiation, and heating of the samples does not accelerate the stabilization of the value. It can be said that the Ps investigated is not suitable for technological dose measurements in accelerator i radiations. (author)

[en] A check of the useful parameters of CD-96 reader is presented. The reader was constructed in the Department of Radioisotope Instruments and Methods of the INCT and dedicated to quick read-out of the foil dosemeter absorbances and for their archivisation. (author)

[en] The influence of NH₃ and C₂H₅OH on the stable product yields in γ-irradiated liquid isopentane and n-pentane has been investigated. Different scavenging efficiencies towards the ionic precursors of some light products in the two C(5) isomers have been found, and the relative reactivities of ethanol and ammonia have been calculated. A scheme describing the main ionic fragmentation reactions in isopentane and n-pentane has been proposed. (author)

[en] Short communication

[en] The effect of electron radiation of an energy of 10 MeV on chemoradiation changes occuring in erythromycin base and its esters have been studied. No radiation damages of the molecule which could effect its antibiotic power have been found. The gaseous products formed are mainly due to the decomposition of the 14-member erythronolide and the ester chain. No change in the desosamine system particularly in the N,N-dimethylamine arrangement have been observed. (author)

No abstract available

[en] The use of radiation technology for waste water and municipal sewage sludge treatment have been worldwide reviewed. Laboratory investigations on sewage sludge electron beam irradiation carried out in Institute of Nuclear Chemistry and Technology (INCT), Warsaw have been presented. The radiation hygenized sewage sludges can be safety used as fertilizers. 31 refs, 2 tabs

[en] Short communication

[en] The Polish regulations connected with trade turnover of cosmetics have been described and discussed. The contamination by microbial flora is very limited and regulated in suitable Polish norm. The possibility of application of radiation technique for pasteurization of different kinds of cosmetics has been discussed. 9 refs, 7 tabs