20.500.12556/RUL-608 Vpliv variabilne zgradbe macesnovine na njene dimenzijske in oblikovne spremembe diplomski projekt The influence of variable structure of larch wood on dimensional and shape stabillity B. Sc. thesis Dimenzijske spremembe in vpliv variabilne zgradbe lesa smo proučevali na jedrovini, mladostnem lesu in beljavi evropskega macesna (Larix decidua Mill.) ter na jedrovini sibirskega macesna (Larix sibirica (Münch) Ledeb.). Dimenzijsko stabilnost smo ugotavljali s spremljanjem krčenja (ß) in nabrekanja (alfa) ter z določanjem kazalnikov dimenzijske stabilnosti: diferencialnega nabreka (q), koeficienta nabrekanja (h) v radialni in tangencialni smeri ter sorpcijskega kvocienta (s). Prirastne značilnosti smo ocenili iz širin ranega in kasnega lesa, kjer smo določili tudi gostoto smolnih kanalov. Ugotovili smo, da med evropskim in sibirskim macesnom ni statistično značilnih razlik v dimenzijski stabilnosti lesa. Med seboj sta si najbolj podobna jedrovina in mladostni les evropskega macesna. Pri vseh meritvah je imel les sibirskega macesna najmanjšo variabilnost. The swelling and shrinking of juvenile wood, sapwood and heartwood of European larch (Larix decidua Mill.) were compared to Siberian larch (Larix Sibirica (Münch) Ledeb.) heartwood. The dimensional stability was examined by observation of shrinking (ß) and swelling, and by determining the indicators of dimensional stability: differential swelling (q), swelling coefficient (h) in radial and tangential direction, and by sorption quotient (s). The growth characteristics were assessed from width of earlywood and latewood, where the resin duct density was also determined. There were no statistically distinctive differences between European and Siberian larch in wood dimensional stability. The heartwood and juvenile wood of European larch were very similar. In all measurements the wood of Siberian larch had the lowest variability. gostota lesa krčenje nabrekanje dimenzijska stabilnost Larix decidua Mill. evropski macesen Larix sibirica (Münch) Lebed. sibirski macesen wood density growth increment shrinking swelling dimensional stability European larch Siberian larch true false false [P. Žagar] Slovenski jezik Angleški jezik Delo diplomskega projekta/projektno delo 2014-07-11 12:26:20 2014-07-11 12:26:20 2022-07-11 10:35:27 0000-00-00 00:00:00 2011 0 Ljubljana 0 VIII, 26 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*812 1957513 dv1_zagar_primoz.pdf dv1_zagar_primoz.pdf 1 3CF7E95497A32CCAE6B996B9C2B9FF62 02273b19e9c4e242591571488d213da7239febfbf9349885228b194dde6271a2 6505a25e-a1b9-11eb-a523-00155dcfd717 20.500.12556/rul/17cbf4a8-7630-4451-92d0-0b714adc9218 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=132425 Biotehniška fakulteta 0 0 0