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The present paper is intended to be an attempt to systematize, though not exhaustive, the main approaches in the research of volatile oils. The analytical investigations of our researchers group in this area are carried out in the Food Quality and Safety Testing Laboratory (LICSA) from University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, as a continuation of our previous studies of volatile oils. [ABSTRACT FROM AUTHOR]

The article discusses a study on the link between lung cancer and exposure to radon progeny which was conducted from 2005 to 2008 with a sample of 667 homes in selected areas in Transylvania, Romania. It provides information on the methods, equipment, and models used to estimate radon concentration and corresponding impact on lung cancer risk. While findings indicate the significance of radon exposure to lung cancer, risk for non-smokers require further studies.

The study of the chemical composition of the unspecific bitter resins was carried on for Magnum, Brewers Gold, Hüller Bitterer and Perle hops cultivars, harvest in 2008, in pedo-climatic areas of Transilvania, in the Saschiz and Seleuş farms. The drying and pelletizing of whole hop cones change the composition of unspecific fraction, especially because the oxidation process. The LCV decrese from 13,44% to 9,24% in Magnum cultivar, from 8,50 to 6,99 in Brewers Gold, from 9,84 to 6,07 in Huller Bitterer and from 9,25 to 6,40% in Perle cultivars. The results were statistical analysed with ANOVA test and the results showed that the technological conditions (temperature, time) are the most important factors in bitter substances losses on technological flow of hop pellets production. [ABSTRACT FROM AUTHOR]