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spruce
Items for "spruce"
UV-microscopic analysis of acetylated spruce and birch cell walls
Spruce and birch earlywood was acetylated to different weight percent gains using three different acetylation procedures...
Keywords: acetylation, birch, cell wall, spectral shift, spruce, UV microscopy
08/2004 | Holzforschung, Walter de GruyterBioactive phenolic substances in industrially important tree species. Part 4: Identification of two new 7-hydroxy divanillyl butyrolactol lignans in some spruce, fir, and pine species
A few lignans, that is, 7-hydroxymatairesinol, secoisolariciresinol, lariciresinol, and nortrachelogenin, predominate in a large proportion of the industrially important softwood species used...
Keywords: Abies, fir, 7-hydroxy divanillyl butyrolactol lignans, isoliovil, knots, knotwood, lignans, liovil, Picea, pine, Pinus, spruce, todolactol A
07/2005 | Holzforschung, Walter de GruyterPine and spruce roundwood species classification using multivariate image analysis on bark
Wood discs from 67 pine and 79 spruce logs were collected from a forest clearing. Three different 24-bit red-green-blue (RGB) images were acquired from the radial surface of each disc...
Keywords: bark, co-occurrence matrix, multivariate image analysis, partial least squares projection to latent structures (PLS), pine, spruce, wavelet, wood species
11/2005 | Holzforschung, Walter de GruyterA comprehensive analysis of the relation of cellulose microfibril orientation and lignin content in the S2 layer of different tissue types of spruce wood (Picea abies (L.) Karst.)
A possible relation between cellulose microfibril angle and lignin content in the S2 layer was investigated by X-ray diffraction and cellular UV microspectrophotometry on spruce tissues [
Keywords: Cell wall assembly, cellulose microfibril angle (MFA), lignin content, S2 layer, spruce
07/2008 | Holzforschung, Walter de GruyterLignin-carbohydrate network in wood and pulps: A determinant for reactivity
Pretreatment of wood or kraft pulp with endoglucanase followed by swelling in urea leaves a non-crystalline residue that can be dissolved in strong aqueous sodium hydroxide-sodium borate solution...
Keywords: birch, endoglucanase, Eucalyptus globulus, kraft pulp, lignin-carbohydrate complex (LCC), size exclusion chromatography (SEC), spruce, thioacidolysis
11/2007 | Holzforschung, Walter de GruyterFungal decay of spruce and beech wood assessed by near-infrared spectroscopy in combination with uni- and multivariate data analysis
Wood is colonised and degraded by a variety of micro-organisms, the most efficient ones are wood-rotting basidiomycetes...
Keywords: beech, brown rot, chemometrics, FT-NIR, partial least squares regression, Principal component analysis, soft rot, spruce, white rot
11/2007 | Holzforschung, Walter de GruyterAnalysis of wood tissues by time-of-flight secondary ion mass spectrometry
The distribution of lignin, carbohydrates, and metal ions on the surface of spruce and aspen wood tissue sections was investigated by time-of-flight secondary ion mass spectrometry (ToF-SIMS)...
Keywords: aspen, bordered pit tori, carbohydrates, compression wood, field-emission scanning electron microscopy (FE-SEM), heartwood, lignin, Metals, ray parenchyma cells, sapwood, spruce, surface distribution, time-of-flight secondary ion mass spectrometry (ToF-SIMS) images
11/2007 | Holzforschung, Walter de Gruyter