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1
Content available remote Selected characteristics of macro and microstructure of pine wood with developed reaction tissue within a single tree
Fabisiak Ewa, Pazdrowski Witold, Nowaczyk Jolanta
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2012
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No. 77
227-231
EN
The paper presents results of measurements for annual ring widths in reaction, opposite and lateral wood formed in the same vegetation periods in pine (Pinus sylvestris L.). In the compared wood tissues tracheid lengths was also measured. The widest annual rings were found in the reaction wood zone. In that area of the stem cross-section tracheids were by approx. 20% shorter than those located on the opposite side of the pith.
2
Content available remote Emission of volatile organic compounds from cross section of pine wood (Pinus sylvestris L.)
Czajka Magdalena, Fabisiak Ewa
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2012
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No. 77
150--154
EN
Emission of volatile organic compounds from cross section of pine wood (Pinus sylvestris L.). The level of emission of volatile organic compounds from heartwood and sapwood part of pine wood was determined. The tests were performed according to the chamber method based on the requirements of ISO 16000 standards. Air from the chamber was sampled after 3, 7 and 14 days. Within the whole test period the heartwood sample emitted several times higher amounts of volatile organic compounds than the sapwood sample. In both cases the composition of the analysed air was dominated by terpenes.
3
Content available remote A study on the dependence between tracheid lengths and microfibril angle in resonant wood of spruce (Picea abies L.)
Fabisiak Ewa, Moliński Waldemar, Kudela Jozef, Mania Przemysław
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2012
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No. 77
222-226
EN
The paper presents results of measurements for tracheid lengths in annual growth rings in spruce wood classified as resonant wood. Annual rings came from the mature wood zone. Moreover, cellulose microfibril angle (MFA) was determined in the S2 layer of the secondary cell wall. This parameter was measured in tangential tracheid walls. Mean values of both tracheid lengths and MFA in the experimental annual growth rings showed slight fluctuations and the relationship of these values was described using a linear function.
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