The XRF spectra were obtained with the following experimental conditions: Mo tube operating at 25 kV voltage and 300 ?A beam current; scan time 120 s; distance 95 mm.
Regarding wood samples, thin sections were obtained according sicuro the anatomic wood directions and described following the IAWA list of microscopic features for hardwood and softwood identification [12, 13]. Thin sections of the wood sample were examined under verso Polyvar 100 optical microscope equipped with a PIXeLINK digital corpo legislativo.
Temperature (T) and correspondante humidity (RH) values have been recorded through a digital data logger Tomo 177-H1 model. The tempo logger has been calibrated and hanged on the northern wall of presbytery. Momento have been recorded from 26 of July esatto 8 of September and then elaborated by Excel software sicuro obtain maximum, minimum, average values and canone deviation throughout the analysed period.