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Items for "juvenile wood"

Effect of juvenile wood on strength properties and dimensional stability of black spruce medium-density fiberboard panels

Strength properties and dimensional stability of medium-density fiberboard (MDF) panels made from black spruce (Picea mariana [Mill.] BSP.) 0–20, 21–40, and over 40 year old fiber were studied...

Keywords: analysis of covariance, black spruce, fiberboard, internal bond, juvenile wood, linear expansion, modulus of elasticity, modulus of rupture, thickness swell, water absorption

01/2005 | Holzforschung, Walter de Gruyter
NMR studies on Fraser fir Abies fraseri (Pursh) Poir. lignins

The composition of mature, juvenile uninfested and juvenile infested Fraser fir wood (Rotholz) and the structures of lignins isolated from these woods were elucidated to verify differences between juvenile and mature wood and the effect of balsam woolly adelgid (BWA) infestation...

Keywords: balsam woolly adelgid (BWA), carbohydrate composition, Fraser fir, juvenile wood, lignin, NMR spectroscopy, Rotholz wood

09/2005 | Holzforschung, Walter de Gruyter
Morphological and chemical variations between juvenile wood, mature wood, and compression wood of loblolly pine (Pinus taeda L.)

To better understand the within-tree variations between juvenile wood, mature wood, and compression wood, wood from a 35-year-old mature bent loblolly pine was separated into seven groups by different positions in the tree...

Keywords: cellulolytic enzyme lignin (CEL), compression wood, crystallilte dimension, fiber quality analysis (FQA), juvenile wood, loblolly pine (Pinus taeda), mature wood, Microfibril angle, nitrobenzene oxidation, NMR spectroscopy, ozonation, sugar analysis, X-ray diffraction

01/2006 | Holzforschung, Walter de Gruyter
Comparison of morphological and chemical properties between juvenile wood and compression wood of loblolly pine

In conifers, juvenile wood (JW) is always associated with compression wood (CW). Due to their similar properties, there is a common belief that JW is the same as CW...

Keywords: C9 formula, compression wood, fiber quality analysis (FQA), juvenile wood, light microscopy, loblolly pine (Pinus taeda), nitrobenzene oxidation, ozonation, sugar analysis

11/2005 | Holzforschung, Walter de Gruyter
Ultrastructural aspects of fibre development during the stone groundwood process: New insights into derived pulp properties

A study was performed on stone groundwood (SGW) pulps produced on a pilot scale. The behaviour of selected juvenile and mature Norway spruce wood samples was investigated...

Keywords: Delamination, fibre development, fibrillation, juvenile wood, mature wood, microfibril angle (MFA), S1 layer, S2 layer, scanning electron microscopy (SEM), stone groundwood (SGW), ultrastructure of the cell wall

08/2007 | Holzforschung, Walter de Gruyter
Sorption and thermodynamic properties of juvenile Pinus sylvestris L. wood after 103 years of submersion

The hygroscopicity and thermodynamic properties of juvenile Pinus sylvestris L...

Keywords: Fourier transform infrared spectra (FTIR), hygroscopicity, isotherm, juvenile wood, Pinus sylvestris, Sorption, submerged wood, X-ray diffraction technique

11/2008 | Holzforschung, Walter de Gruyter