Počet záznamov: 1
The effect of tension wood on the selected physical properties and chemical composition of beech wood (Fagus sylvatica L.)
Názov The effect of tension wood on the selected physical properties and chemical composition of beech wood (Fagus sylvatica L.) Aut.údaje Tatiana Vilkovská, Ivan Klement, Eva Výbohová Preklad názvu podnázvu : Vplyv ťahového dreva na vybrané fyzikálne vlastnosti a chemické zloženie bukového dreva Autor Vilkovská Tatiana TUZDFDT - Katedra drevárskych technológií Spoluautori Klement Ivan TUZDFDT - Katedra drevárskych technológií Výbohová Eva TUZDFCHTD - Katedra chémie a chemických technológií Zdroj.dok. Acta Facultatis Xylologiae Zvolen : scientific journal of the Faculty of Wood Sciences and Technology, Technical University in Zvolen : vedecký časopis Drevárskej fakulty Technickej univerzity vo Zvolene. Vol. 60, no. 1 (2018), p. 31-40 Poznámky Lit. Jazyk dok. angličtina Krajina Slovenská republika Systematika 630*812.21 630*813 Heslá ťahové drevo - tension wood * normálne drevo - normal wood * FTIR - FTIR * vlhkosť dreva - moisture content of wood * chemické zloženie dreva - chemical wood composition Anotácia The paper is focused on the comparison of selected properties of the tension and normal wood. Beech is wood with high frequency of defects such as red false heartwood, reaction wood ( t ension wood), dote and so forth . The quality of beech wood is determined according to the structure and properties . T he tension wood is considered an important wood defect because it causes negative alterations in solid wood quality and limits an industrial utilization of the wood. Tension wood content in our research w as evaluated by the initial longitudinal warping and the woolly appearance of surface. The wood turning blanks of normal and tension wood were selected with a thickness of approximately 50 mm, wi dth of 55 mm, and length of 460 mm. Q uantity of 32 woodturning blanks were determined for moisture content and 16 samples for density from two groups t ension [TW] and n ormal wood [NW]. Fourier transform - infrared (FTIR) spectroscopy measurements were carried out using a Nicolet iS10 FTIR spectrometer equipped with Smar t iTR attenuated total reflectance (ATR) sampling accessory with diamond crystal (Thermo Fisher Scientific). A resolution of 4 cm - 1 and 32 scans per sample w as used. Higher variations in average moisture conten t were in the samples of tension . No significant statistical differences were found between density of tension and normal wood samples measured in fresh state. The cellulose in tension wood has higher degree of crystallinity than in normal wood. URL https://df.tuzvo.sk/sites/default/files/04-01-18.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Zväzky 2018: 1-2 
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Počet záznamov: 1