Results 121 to 130 of about 6,135 (156)

Shiny Beech Wood is Confirmed as an Indicator of Tension Wood

IAWA Journal, 2008
This study sought to develop a method to quantify tension wood areas in stem discs. It was suggested that the shiny appearance of beech (Fagus sylvatica L.) could provide an indication of tension wood. Each of 21 stem discs were digitised and the images analysed.
Barbacci, Adellin, Constant, Thiéry, Farre, Etienne, Nepveu, Gérard, Menigot-Harroué, Maryline   +4 more
openaire   +3 more sources

Thermopower of beech wood biocarbon

Physics of the Solid State, 2011
This paper reports on measurements of the thermopower S of high-porosity samples of beech wood biocarbon with micron-sized sap pores aligned with the tree growth direction. The measurements have been performed in the temperature range 5–300 K. The samples have been fabricated by pyrolysis of beech wood in an argon flow at different carbonization ...
I. A. Smirnov, B. I. Smirnov, T. S. Orlova, Cz. Sulkovski, H. Misiorek, A. Jezowski, J. Muha   +6 more
openaire   +1 more source

Adhesive penetration in beech wood

2012
A study with synchrotron radiation X-ray tomographic microscopy (SRXTM) of PUR, PVAc, and UF adhesive bond lines in beech wood, bonded under various growth ring angles, is presented. The bond line morphologies and the adhesive penetration into the wood structure were evaluated after determining the hardening characteristics of the adhesives.
Hass, Philipp, Wittel, Falk K., Mendoza, Miller, Herrmann, Hans J., Niemz, Peter   +4 more
openaire   +1 more source

Characterization of Steamed Wood Lignin from Beech Wood

Holzforschung, 1985
On etudie l'influence d'un traitement de prehydrolyse a la vapeur sur la lignine de Fagus ...
K. Sudo, K. Shimizu, K. Sakurai
openaire   +1 more source

Silylation of solid beech wood

Wood Science and Technology, 2001
This report presents a new derivative from the chemical conversion of hardwood. Silylation of hardwood was successfully achieved using trimethylsilyl chloride with pyridine as base. The new wood compounds were analyzed by FTIR spectroscopy. The FTIR spectra of the silylated wood compounds show new absorption bands derived from trimethylsilyl ether ...
openaire   +1 more source

Short-time procedure for fatigue assessment of beech wood and adhesively bonded beech wood joints

Materials and Structures, 2015
Timber as a structural material has experienced a revival for aspects related to sustainability, positive effect on interior building and increased architectural possibilities. To overcome a series of limitations related to partly obsolete traditional techniques, timber engineering sets high expectations on adhesive bonding as a joining method ...
Sebastian Myslicki, Till Vallée, Frank Walther   +2 more
openaire   +1 more source

Machining properties of thermally modified beech- wood compared to steamed beech-wood

2009
The objective of this paper was to determine and compare machining properties of thermally modified and steamed beech-wood (Fagus silvatica L.). Analysis was made of the influence of feed speed, rake angle and wood treatment on chips properties (particle size distribution, bulk density and factor of looseness), machining power and noise emission ...
Beljo Lučić, Ružica, Čavlović, Ankica, Đukić, Igor, Jug, Matija, Ištvanić, Josip, Škaljić, Nedim   +5 more
openaire   +2 more sources

Welding of modified beech wood

2011
Wood welding is a mechanical, physical and chemical process during which melt is produced, which then turns into a solid joint after cooling. The paper shows current world-wide knowledge on welding of modified wood while the results of wood welding were received from the Faculty of Forestry in Zagreb.
Župčić, Ivica, Grbac, Ivica, Bogner, Andrija, Premuš, Igor   +3 more
openaire   +2 more sources

The structure of beech-wood lignin : an investigation into the isolation of lignin by the direct acetylation of beech-wood meal.

1934
The direct acetylation of a prepared beechwood meal has been carried out with a view to the separation of an acetylated lignin. The maximum solution by acetylation uas 76.7% of the lignin present in beech-wood. A separation of the acetylated lignin in high yield by preferential solvent extraction was not obtained.
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Alkaline degradation of spruce and beech wood

Wood Science And Technology, 1982
The alkaline delignification of spruce and beech wood is accomplished in three phases. The first phase results in a decrease of yield down to 83...80%, the second one in a decrease from 83...80% to 64...61% and the third one in a yeld drop from 64...61% to 50...46%. The amount of polysaccharides removed in the first phase was 22%, in the second phase 5.
openaire   +1 more source