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Selected aspects of the reaction beech wood
Názov Selected aspects of the reaction beech wood Aut.údaje Jarmila Geffertová ... [et al.] Preklad názvu podnázvu : Vybrané aspekty reakcie bukového dreva Autor Geffertová Jarmila TUZDFCHTD - Katedra chémie a chemických technológií Spoluautori Geffert Anton TUZDFCHTD - Katedra chémie a chemických technológií Vilkovská Tatiana TUZDFDT - Katedra drevárskych technológií Klement Ivan TUZDFDT - Katedra drevárskych technológií Vacek Ondrej TUZDFMDG - Katedra matematiky a deskriptívnej geometrie Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Vol. 61, no. 2 (2019), s. 5-15. - Zvolen : Technická univerzita vo Zvolene, 2019 Poznámky Lit. Jazyk dok. angličtina Krajina Slovenská republika Systematika 674.031.632.2 630*81 630*811.22 Heslá bukové drevo - beech wood * reakčné drevo - reaction wood * zafarbenie dreva - colouring of wood * rozmery vlákien - fiber dimensions Anotácia The specifics of reaction beech wood in terms of basic chemical properties, colouration and dimensional propertiesof the wood fibresare presented in the paper. The samples of reaction and opposite beech wood were evaluated using standard chemical analyses by means of measuring the colour coordinates L*, a*and b*and determining the dimensional properties of the wood fibres using Fiber Tester.Awell-known fact that reaction wood has a higher proportion of cellulose and a lower proportion of lignin than opposite woodis confirmed by the chemical analyses.The content of extractives in both samples was very similar (from 2.97 to 3.53%).The lightness (L*) of reaction wood is higher than the lightness of opposite wood, both in wet and dried wood. After the drying process, the lightness of wood increased slightly.The biggest colour differences were noticed between the wet reaction and opposite wood (DE*=18.6). Except one sample, all observed values of the total colour difference were DE*>3. Knowledge about well-recognized colour changes in wet reaction wood could also be applied in the early identification of reaction wood in the industrial practice. Based on the fibre length distribution,the fact that reaction wood contains fewer parenchyma cells alongside with the higher representation of fibre cells and the lower representation of vessels can be concluded. URL https://df.tuzvo.sk/sites/default/files/01-02-19_1.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Zväzky 2019: 1-2 
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Počet záznamov: 1