Results 51 to 60 of about 1,853,652 (323)

Rapid semi-quantitative determination of aspen lignin in lignocellulosic products; pp. 105–112 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2015
In the present study different methods for the determination of aspen lignin were investigated. In experiments, dried samples of extractive-free aspen wood and grinded bleached-chemo-thermo-mechanical-pulp (BCTMP) of aspen were used. For isolating lignin
Urve Kallavus   +3 more
doaj   +1 more source

Origin and characterisation of the extractable colour of oak heartwood used for ageing spirits

open access: yesJournal of Wood Science, 2020
In this study, investigation is focused on the soluble part of oak heartwood colour, with the objective of defining its impact on the colour of spirits after a barrel ageing.
Nicolas Vivas   +4 more
doaj   +1 more source

Drying quality and colour of subfossil oak from central Serbia [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2018
The subject of this paper is the analysis of the quality of natural and conventional drying of subfossil oak wood. In addition to the drying quality, the colour of this material, as well as the effect of the drying process on colour change have ...
Veizović Marko   +3 more
doaj   +1 more source

Colours of Low-growing Wood Flowers [PDF]

open access: yesNature, 1882
No one can enter our English woods just now without being struck with the lovely way in which they are starred with the yellow of the primrose, the white of the anemone and strawberry, and the light blue of the dog violet. It will be noticed that the tints of these flowers seem positively to shine in the low herbage and among the semi-shade of the ...
openaire   +2 more sources

Observing accelerated chemical colour change in aspen and birch wood using hyperspectral imaging and spectrophotometry

open access: yesEuropean Journal of Wood and Wood Products
Natural weathering gradually turns wood light grey over years, driven by exposure to sunlight, precipitation, and biological agents. Nontoxic chemicals have been used to accelerate artificial weathering-induced colour changes in wood. This study aimed to
Joona Lampela   +4 more
semanticscholar   +1 more source

IMAGE CONVERSION FOR LASER PYROGRAPHY [PDF]

open access: yesPro Ligno, 2015
All previous studies of pyrography have been focussed on colour obtained through modifying the work parameters. This paper analyses colour nuances obtained by laser woodworking by measuring colour changes digitally. The investigated parameter is colour
Adrian PETRU
doaj  

Akustične lastnosti bukovine po hidrotermični obdelavi

open access: yesLes, 2017
We investigated the acoustic properties of beech wood (Fagus sylvatica L.) after hydrothermal treatment. Two beech logs were cut into 10 pairs of radially oriented specimens with the dimensions 500 mm × 160 mm × 12 mm and air dried.
Ervin Žveplan, Aleš Straže
doaj   +1 more source

(Machining Performance and Bonding Quality of Densified Faster-Grown Teakwood

open access: yesJurnal Ilmu Pertanian Indonesia, 2021
The objective of this study was to analyze machining performance (characteristic and quality), as well as bonding quality of densified wood, and then compared to those of un-treated (control) wood and boron-treated wood.
Herianto Siahaan, Imam Wahyudi
doaj   +1 more source

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

open access: yesMolecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge   +17 more
wiley   +1 more source

Green Colouring-matter of Decaying Wood [PDF]

open access: yesNature, 1888
ANYONE who lives in a fairly wooded part of the country must be familiar with the fact that at certain stages of decay fallen branches of trees are often to be observed among the dry forest-litter coloured more or less through their tissue with various shades of green. After an examination of thin sections with the microscope, I am unable to trace this
openaire   +3 more sources

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