Počet záznamov: 1
Impact of the norway spruce sapwood treatment with the staining fungus Sydowia polyspora on its permeability and dynamic modulus of elasticity
SYS 0095203 LBL 00000naa^^22^^^^^^^^450 005 20180424101447.2 017 70
$a 10.17423/afx.2018.60.1.02 $2 DOI 100 $a 20180424a m y0sloy0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Impact of the norway spruce sapwood treatment with the staining fungus Sydowia polyspora on its permeability and dynamic modulus of elasticity $f Anna Danihelová ...[et al] 215 $c Obr., tab. 320 $a Lit. 330 $a The impregnability of the Norway spruce wood is very difficult due to irreversible closing of pit - pairs in the cell walls of tracheids during drying. Therefore, for specific spruce products which have to be better impregnated: (1) with biocides, e.g. poles exposed in humid environment suitable for action of decaying fungi and insects; (2) with polymers or other conservation and modifying substances, e.g. musical instruments at wood - acetylation with anhydride of acetic acid , their good permeability for liquids is very important. Permeability of refractory wood species can be increased by several methods – mechanical, physical, chemical and biological. This study presents a 24 - week bio - treatment of spruce sapwoo d with the wood - staining fungus Sydowia polyspora and its effect on permeability as well as on density and dynamic modulus of elasticity of Norway spruce wood. S. polyspora was chosen because it does not attack structural polymers of wood but it is fed onl y by substances stored in lumens of cells and in pit - pairs. The coefficient of axial permeability K of the bio - treated and subsequently dried spruce sapwood increased approximately 5 - times, from (0.362 ´ 10 - 12 to 1.861 ´ 10 - 12 ) m 2 . On the other hand, the c hanges in the density r and the dynamic modulus of elasticity along the spruce sap wood grain E L were statistically insignificant, which is an important fact from the point of view of using this bio - treatment method in practice. 463 -1
$1 001 sldk_un_cat*0094837 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Vol. 60, no. 1 (2018), s. 13-18 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2018 610 1-
$9 sldk_un_auth*h005962 $a smrekové drevo $X spruce wood 610 1-
$9 sldk_un_auth*h015907 $a permeabilita $X permeability 610 1-
$9 sldk_un_auth*h014412 $a dynamický modul pružnosti $X dynamic modulus of elasticity 610 1-
$9 sldk_un_auth*h006551 $a drevosfarbujúce huby $X stain fungi 675 $a 674.032.475.5 $v 2. stred. $z slo 675 $a 630*844.1 $v 1. stred. $z slo 701 -1
$3 sldk_un_auth*p0000670 $a Danihelová $b Anna $f 1954- $p TUZDFPO $4 070 $T Katedra protipožiarnej ochrany 701 -1
$3 sldk_un_auth*p0028092 $a Reinprecht $b Ladislav $f 1953- $p TUZDFDT $4 070 $T Katedra drevárskych technológií 701 -1
$3 sldk_un_auth*0021770 $a Spišiak $b Dominik $f 1988- $p TUZDFPO $4 070 $T Katedra protipožiarnej ochrany 701 -1
$3 sldk_un_auth*p0020182 $a Hrčka $b Richard $f 1974- $p TUZDFNOD $4 070 $T Katedra náuky o dreve 801 -0
$a SK $b ZV001 $c 20180424 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/02-01-18_0.pdf
Počet záznamov: 1