Approaches to regulation of odours in the ambient air at the territory of the Russian federation based on olfactometric odour measurements relating to industrial emissions

This work presents results of odour concentration measurements performed by an olfactometric method in respect to industrial emissions, which are the source of offensive odour substances released into atmosphere. Moreover, this work also includes the measured odour concentrations at major sources of a wastewater treatment plant, as well as at heat and power plants. Related measurements were performed in the course of technological operations regarding fuel oil discharge and steam cleaning of railroad tank cars. Finally, this work introduces several approaches to further development of the odour regulation system in Russia. These approaches are based both on the foreign experience and the national sanitary regulation system regarding pollutant substances in ambient air of inhabited territories.     

Comparative analysis of the spectral and scaling characteristics of optical aperiodic-structure elements

Comparative analysis is given for the properties of deterministic aperiodic diffraction gratings and multilayer structures based on one-dimensional quasicrystal models. Quantitative relation is established between the self-similarity of their structures and the scaling of the spectral characteristics. Some applications of aperiodic devices are discussed.