Late Medieval and Modern Ceramics from the Castle in Przezmark in the Light of the Results of Gas Chromatography Coupled with Mass Spectrometry – an Attempt at Interpretation

Archaeological excavations of the Institute of Archaeology UKSW lasted from July to August 2017. Principals have reviewed the area. In the first season, four excavations were opened – three (A–C) ones in the high castle and one (D) in the middle castle area. Trench A was founded on the outside of the south-eastern corner of the castle. The work was to verify the presence of the external wall – it was built from the side of the lake, present on the plans of the castle. During the excavation tests, the remains of the toilet tank were unveiled. Fragments of usable ceramics were extracted from these places. Samples were taken from vessels and transferred to the laboratory. During the chemical analysis, fatty acids were isolated. Based on the proportion of acids obtained, an attempt was made to interpret food prepared in dishes. The following tests were chosen for the tests: lid (P1), six den (P2, P3, P4, P5, P6, P7), two bellies (P9, P10) and two outlets (P8 and P11). After an overall analysis, it was found that FAME of plant and animal origin was detected in all samples.

THE RESEARCH THE INFILTRATION EFFECT OF OUTSIDE AIR ON THE VALUE OF AIR EXCHANGE IN LOW-RISE RESIDENTIAL BUILDINGS

This article presents the results of a theoretical study of the infl uence the outside air infi ltration through the enclosing structures of the walls on the amount the air’s exchange in low-rise residential buildings. Based on the information analysis from offi cial documents of state statistical and analytical bodies, the most frequently used external wall structures in modern low-rise residential construction have been determined. Based on the provisions analysis of modern regulatory documents in the construction’s fi eld, the minimum values the required air exchange were determined and the calculations of the values the infi ltration air fl ow through the outer walls for various premises of low-rise residential buildings were made. Based on the results of the analysis and calculations was made a generalizing conclusion that for the considered premises of modern low-rise residential buildings, at the expense of the infi ltration of outside air through the enclosing structures of the walls, it is impossible to provide even 20 % of the minimum air exchange.