Official Journal of the Japan Wood Research Society
Page 41 of 43
The chromium adsorption ability of leaves from 34 conifer species were examined. Among them, deciduous conifer species, such asLarix, Ginkgo, Metasequia, andTaxodium, showed high ability to adsorb chromium ions. ...
The reduction of ferric chelate caused by various wood-rot fungi was analyzed. Ferric chelate reductive activity was detected in cell-free extracts of seven wood-rot fungi:Phanerochaete chrysosporium, P. sordida ...
Microcrystalline cellulose with minimal surface charge was prepared from softwood kraft pulp via hydrolysis by 4N hydrochloric acid instead of sulfuric acid. To this material, sulfate ester groups as surface c...
A database from a series of cross-sectional density distributions in a 0.16 × 0.34 × 1.28m strand-based wood composite specimen has been successfully developed using X-ray computer tomography (CT) techniques. ...
Coniferous woods were modeled as honeycomb cellular solids consisting of hexagonal-prism tracheids to examine the mechanism for radial compression. Because of the abrupt breaks of radial cell walls, it was ass...
The chemical conversion of red pine sulfuric acid lignin (Klason lignin) (SAL) as an acid hydrolysis lignin sample to water-soluble arylsulfonates of lignin derivation (i.e., phenolized SAL) was investigated. ...
Handsheets were prepared with rosin soap size and aluminum sulfate under various conditions, and the retention behavior of the rosin size and aluminum components in the handsheets was studied. Pyrolysis-gas ch...
To develop a new nonchlorine bleaching technology, hardwood and softwood kraft pulps, before and after oxygen-alkali predelignification, were treated with dilute sulfuric acid solutions (pH 1.0-1.8) at 100°C f...
The impregnation of various simple phenolic and natural polycyclic compounds into wood was investigated from the viewpoints of vibrational property and dimensional stabilizing effect. When simple phenolic comp...
Ultrasonic nondestructive evaluation (NDE) methods have been successfully applied for grading lumber and veneer at the in-plant level. To expand this application in wood composite production, further research ...
Curved laminated veneer lumber (LVL) for use in furniture-making was produced from glue-coated pieces of rotary-cut veneers that were assembled and pressed between molds. Pressure was applied until glue-lines ...
The tensile strength (TS) test results of Japanese larch (Larix kaempferi, Carriere) lumber of varying length have shown that the length effects on TS were different between high-grade (H) and low-grade (L) lumbe...
An experimental study was conducted to evaluate the effect of length on the parallel-to-grain tensile strength of Japanese larch (Larix kaempferi, Carriere) lumber. Six hundred pieces of mechanically graded lumbe...
Using soft X-ray photography, two-dimensional observations were made of the water distribution within the green stem ofCryptomeria japonica D. Don. Variations in the distribution pattern of the “wet area” in the ...
Water distribution in green stems ofCryptomeria japonica D. Don was observed by soft X-ray photography. In the sapwood, much water was present and evenly distributed. In the intermediate wood (the white zone), li...
Fagaceae species in Japan were identified by restriction fragment length polymorphism (RFLP) and sequence comparison of a region ofrbcL. Of nine restriction endonucleases used for digestion, three (MspI,RsaI,HaeI...
The effect of coniferyl alcohol on removal of chlorinated phenols from a water environment byRhizoctonia praticola andCerrena unicolor laccases was studied. At optimal conditions in which 7 mM coniferyl alcohol a...
Ethyl acetate extracts ofCupressus lusitanica suspension cell cultures were examined for their biological activities (viz., tyrosinase inhibitory, antioxidant, and antimicrobial activities). The extract from elic...
To radiolabel xylan in mature cell walls selectively, magnolia (Magnolia kobus DC.) was administered withmyo-inositol-[2-3H] and allowed to metabolize for 1 month. The radiolabeled xylem tissue was then submitted...
The thermal properties and structures of deoxyhalocelluloses were studied using thermogravimetric and differential scanning calorimetric analyses and an X-ray diffraction method. The X-ray diffraction curves o...
Handsheets were prepared with aluminum sulfate under various conditions of pulp suspension, and factors influencing retention behavior of aluminum components on the handsheets were studied on the basis of thei...
A modified method was developed to evaluate how much chlorine is consumed by the oxidation reaction during the chlorine bleaching process. This evaluation is, in principle, based on the sum of chloride produce...
A strain of the fungusCoriolus versicolor was inoculated periodically into potato dextrose agar (PDA) slants containing the effluent to enhance the natural ability to grow in the effluent. The acclimated strain g...
To control reliably the suitable use of curved laminated veneer lumber (LVL) as a structural member of furniture, stress distributions and failure types of curved LVL made from massion pine (Pinus massoniana Lamb...
This study was designed to investigate the effects of moisture content (MC) and specific gravity (SG) on the bending strength and hardness of six wood species including Japanese cedar (Cryptomeria japonica D. Don...
The mechanism for radial compression of coniferous wood was examined from the viewpoint of the porous structure of wood. The compressive test was carried out in a wet-type scanning electron microscopy (WET-SEM...
This study examined the bending creep behavior in the longitudinal direction of six species under cyclic moisture content (MC) changes. For each species, tests were made at 20°C with five cyclic relative humid...
The density (ϱ), dynamic Young's modulus (E), loss tangent (tanδL) in the longitudinal (L) direction, and the dynamic shear modulus (G), loss tangent (tanδS) in the LT or LR (T, tangential; R, radial) plane of wo...
Image analysis was used in this study to develop a faster, more objective method for quantitatively measuring tracheid shapes on cross section. The morphological features were measured automatically using the ...
Tree-ring chronologies were developed fromAbies mariesii Masters andPicea jezoensis ssp.hondoensis (Mayr) P. Schmidt collected at different altitudes of Mt. Norikura, central Japan. The tree-ring parameters of ri...
Embryogenic cells (ECs) of sugi (Cryptomeria japonica D. Don) were induced from immature and mature zygotic embryos cultured on different concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D)-containing modifi...
Japanese oak bark, which is one of the most difficult woody biomass materials for iron-catalyzed lowtemperature (<700°C) hydrogasification, was subjected to HNO3 oxidation as the pretreatment after prewashing wit...
The objective of this study was to characterize the decay of acetylated wood due to brown-rot and white-rot fungi by analysis of chemical composition, X-ray measurements, and13C-NMR spectroscopy. The decay by bro...
This study was conducted to investigate the susceptibility of various wood composite panels exposed to wood-deteriorating fungi. Five wood-attacking fungi (three mold fungi, one brown rot fungus, one white rot...
The present work was undertaken from the standpoint of radical-capturing ability with regard to the antioxidative ability of flavonoids, especially flavonols distributed widely in woody plants. In regard to th...
Anionic emulsion sizes consisting of rosin triglyceride esters and partly fortified rosin acids (i.e., rosin-ester sizes), have recently been used as internal sizes for alkaline papermaking. In this study, han...
The modification oftrans-1,4-isoprene rubber (TIR) with maleic anhydride (MAH) was conducted in a kneader at 150°C, 30–70 rpm, for 10 min without using peroxide. The resultant MAH-modified TIR (MTIR) was then eva...
Compression wood is formed by the living tree to compensate for external loads. It creates wood fibers with properties undesirable in sawn products. Automatic detection of compression wood can lead to producti...
We examined the applicability of the Iosipescu shear test for measuring the shear properties of wood. Quarter-sawn board of sitka spruce (Picea sitchensis Carr.) and shioji (Japanese ash,Fraxinus spaethiana Linge...
The creep behavior of wood during water adsorption was mathematically analyzed based on the excitation response theory. The creep changeϕ u (t), obtained by subtracting an instan...
The gloss of wood is a unique texture compared to that of other materials. To express it quantitatively, two digital-image analyses were performed. One method was multiresolutional contrast analysis, which was...
Mycelial protoplasts of two compatible monokaryons ofLentinula edodes were prepared, and electro-fusion was undertaken. Sixteen dikaryons isolated after the electrofusion were tested for their fruiting abilities ...
Seven species of bacteria were isolated and identified from ponded sugi (Cryptomeria japonica D. Don) logs, and six species showed potent wood-degrading activities. To evaluate the effects of these isolated bacte...
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Journal of Wood Science is affiliated with The Japan Wood Research Society.