Results 21 to 30 of about 1,300,773 (289)

Investigation of tension wood formation and 2,6-dichlorbenzonitrile application in short rotation coppice willow composition and enzymatic saccharification [PDF]

open access: yesBiotechnology for Biofuels, 2011
Background Short rotation coppice willow is a potential lignocellulosic feedstock in the United Kingdom and elsewhere; however, research on optimising willow specifically for bioethanol production has started developing only recently.
Ray Michael J   +4 more
doaj   +2 more sources

A staining method for determining severity of tension wood

open access: yesTurkish Journal of Agriculture and Forestry, 2010
Tension wood is considered to be an important defect by the wood processing industries. A considerable amount of research has been done to determine the presence and structure of tension wood; however, there is a need to find a quick, practical, and applicable method to evaluate the severity of tension wood.
Dogu, Dilek, Grabner, Michael
openaire   +3 more sources

G-fibre cell wall development in willow stems during tension wood induction. [PDF]

open access: yesJ Exp Bot, 2015
Willows (Salix spp.) are important as a potential feedstock for bioenergy and biofuels. Previous work suggested that reaction wood (RW) formation could be a desirable trait for biofuel production in willows as it is associated with increased glucose ...
Gritsch C   +5 more
europepmc   +2 more sources

INFLUENCE OF DIFFERENT FACTORS ON ADHESIVE LINE SOLIDIFICATION IN SHEAR TENSION TEST AND DRY AND WET TENSILE TENSION TEST OF WOOD STRUCTURE [PDF]

open access: yesMesopotamia Journal of Agriculture, 2013
This study was conducted to test the strength of glue line in wood structures by using some mechanical tests (shear strength test, Dry and wet tensile tests). Two kinds of adhesives (Urea-formaldehyde (UF) and poly-vinyl acetate (PVA) with three types of
Abdul-Razzak Almallah, Alaa Ahmed
doaj   +1 more source

Position and role of tension wood in trees - Case study: Eucalypts [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2016
One-year seedlings of five species of eucalypt: E. camaldulensis, E. microtheca, E. viminalis, E. globulus and E. gunnii were treated for 14 weeks in growth season, tilting a branch to c. 60° in every successful ones.
Nooshin Toghraie
doaj   +1 more source

On the detachment of the gelatinous layer in tension wood fiber [PDF]

open access: yesJournal of Wood Science, 2005
The detachment of the gelatinous layer (G-layer), often observed on microtome cross sections, has led some authors to believe that the G-layer cannot act as the driving force of longitudinal shrinkage in tension wood. The aim of this study was to observe the detachment of the G-layer along fibers.
Clair, Bruno   +2 more
openaire   +2 more sources

Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2012
The acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared.
Mohammad ali Sadat nia   +4 more
doaj   +1 more source

SHRINKAGE OF THE GELATINOUS LAYER OF POPLAR AND BEECH TENSION WOOD [PDF]

open access: yesIAWA Journal, 2001
Macroscopic longitudinal shrinkage of beech and poplar tension wood is higher than in normal wood. This shrinkage is the result of mechanical interactions of cell wall layers. SEM observation of cut, dried surfaces showed that longitudinal shrinkage is much greater in the gelatinous layer than in other layers.
Clair, Bruno, Thibaut, Bernard
openaire   +3 more sources

The effect of drying intensity and moisture content on longitudinal permeability of poplar tension and normal wood (populus nigra ) [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2011
The longitudinal gas permeability of tension wood and normal wood of Populus nigra dried by two different drying conditions was measured. Board specimens were dried under mild conditions (50ºC, and ٪63 relative humidity) to reach ٪11.8 MC, and under ...
Mohammad mehdi Parhizkari   +3 more
doaj   +1 more source

STADY OF SURFACE TENSION OF MODIFIED WOOD

open access: yesMaterials of the All-Russian scientific and practical conference "Modern machines, equipment and IT solutions for industrial complex: theory and practice", 2021
The study of the surface tension of wood of various tree species impregnated with used sunflower oil was carried out. Samples of birch, pine and linden wood were used for oil treatment. Impregnation of wood materials was carried out by the method of “hot-cold baths”. As an impregnating material, used refined fryer oil was used.
V. Zayats   +2 more
openaire   +2 more sources

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