Official Journal of the Japan Wood Research Society
Page 42 of 43
The nutritional and physical requirements for the efficient mycelial colonization ofVolvariella volvacea (Bull. ex. Fr.). Singer were elucidated with the percentage mycelial colonization and density as references...
A series of experiments on the preparation and regeneration of protoplasts from hyphal strands ofVolvariella volvacea (Bull. ex. Fr.) Singer were conducted with the aim of optimizing the conditions for its effici...
To investigate the relations between growth and the wood properties of Japanese larch (Larix kaempferi), six sample trees of varied ages and radial growth were felled and the ring width, ring density, percentage ...
The present study deals with the effects of gibberellins (GA3 GA4) and uniconazole-P, an inhibitor of gibberellin biosynthesis, on negative gravitropism and xylem formation in the stems of horizontally positioned...
We investigated the possible role of metal proteinase on the fruit-body formation ofHypsizygus marmoreus. The addition of a specific metal proteinase inhibitor, phosphoramidon, to the culture medium (10μg/ml) com...
The contents of diterpenoids, ginkgolides A, B, and C, in seeds, embryos, and plantlets ofGinkgo biloba were analyzed to clarify the relations between organogenesis and terpene contents inG. biloba. There is so f...
An intracellular, soluble ferrireductase thought to be involved in the reduction of manganese dioxide by white-rot fungusPhanerochaete sordida YK-624 was purified for the first time. Two isoenzymes, NAD(P)H-depen...
Low-density fiberboards with densities ranging from 0.05 to 0.50g/cm3 were manufactured with steam injection pressing. Bond-type and foam-type isocyanate compound resin adhesives were used separately at 10% and 3...
This research attempts to observe indirectly the variation of internal bond characteristics for wood composite materials during accelerated aging test treatment using ultrasonic pulse-transmission techniques. ...
Short carbon fibers, a reinforced material in wood veneer composites, were used to investigate the effects of fiber length and orientation of fibers on the elasticity of plywood. The technical feasibility, ela...
The development of a layout plan for a new plant with the aid of genetic algorithms was studied to place the machines so that the plant floor was effectively utilized and the operation would not be impeded. Ge...
Structural changes of residual lignin in unbleached softwood kraft pulp (SWKP) during manganese peroxidase (MnP) treatment were investigated to obtain some understanding of the biobleaching action of SWKP with...
The reference compound (9), with a partial structure of acteoside, was synthesized to elucidate the relation between structural features and the precipitation or solubility of the oxidation products of acteoside:...
Enzyme lignin was prepared from reed; it was acid-hydrolyzed and reduced with NaBH4. Spin concentrations of radicals produced by oxidation of the lignins with K3[Fe(CN)6] or H2O2 were determined from electron spi...
Morphological changes of ramie fibers due to swelling in alkali solution were investigated. The observed twisting and changes in the cross-sectional shape of the fibers could be explained as a geometrical alte...
The surfaces of handsheets containing polydiallyl-dimethylammonium chloride (PDADMAC) and anionic polyacrylamide (A-PAM) were analyzed using X-ray photoelectron spectroscopy (XPS). The observed N1s chemical sh...
Agronomic properties (whole stalk yield, fiber length distribution, chemical composition) and whole stalk kraft pulp characteristics (total pulp yield, pulp fiber length distribution, pulp sheet strengths) wer...
Isocyanate resin-bonded 0.5 and 0.7 g/cm3 lauan (Shorea sp.) particleboards were produced from mats with uniform and distributed moisture content (MC) distributions, using three hot press closing speeds. The effe...
Reed and wheat straw particleboards bonded with urea formaldehyde (UF) resin were manufactured from two different material configurations (i.e., fine and coarse particles). The board densities were in the rang...
Curved laminated veneer lumber (LVL) is manufactured from glue-coated pieces of rotary-cut veneers assembled and pressed between molds. In this study, curved LVLs were produced from two fast-growing wood speci...
The purpose of this study was to explore conditioning effects on wood panels (used as interior decorative materials). We examined hourly the temperature and relative humidity (RH) in a living environment based...
The equilibrium moisture content (EMC) of six wood species under desorption conditions of 20°C and 100% → 0% relative humidity (RH), and the rate of adsorption at various depths of three wood species blocks un...
This study investigated and clarified the relation between the piezoelectric voltage and microscopic fracture of hinoki (Chamaecyparis obtura Endl.), in particular the deformation of the cross-sectional wall of t...
This study investigated the relation between the resting potential of a 2-year-old Japanese oak (Quercus crispula Blume) sapling and its physiology, especially the radial transport of water containing inorganic i...
Sugi (Cryptomeria japonica D. Don) wood powder was carbonized at varying temperatures and used as a material to remove heavy metals from their aqueous solutions. Single solutions of mercuric chloride and mixed aq...
Carbohydraseproduction of Hypsizygus marmoreus cultured on sawdust rice bran medium by bottle cultivation was investigated to elucidate the carbohydrase utilized as the growth substrate for the fruit-body formati...
Cortical microtubules (MTs) in differentiating compression wood tracheids of Taxus cuspidata stems were visualized by confocal laser microscopy. They were oriented obliquely at an angle of about 45° to the trache...
Degradation of high-molecular-weight polyethylene membrane by lignin-degrading fungi, IZU-154, Phanerochaete chrysosporium, and Trametes versicolor, was investigated under various nutritional conditions. IZU-154 ...
To characterize the mechanism of the reaction of lignin with aqueous acetic acid (AW) containing a small amount of H2SO4, guaiacylglycerol-β-guaiacyl ether (GOG), and guaiacylglycerol-β-syringol ether (GOS) were ...
The influence of merbau wood extractives on the gelation rate of a phenolic adhesive and the effects of some cure accelerators on the bond performance of merbau plywood were investigated. The addition of merba...
The thermal properties of isocyanate (IC) resin cured with water were studied using dynamic mechanical analysis (DMA) and Fourier transform infrared spectroscopy. The thermal properties of cured phenol formald...
Seven reactions take place consecutively and competitively during the hydroxymethylation of phenol in aqueous alkaline media. This hydroxymethylation is the first step in the formation of phenolic resins and h...
Three-layered composite oriented strand boards were manufactured using very thin hinoki (Japanese cypress, Chamaecyparis obtusa Endl.) strands oriented in the faces and mixtures of sugi (Japanese cedar, Cryptomer...
The objective of this research was to evaluate the mechanosorptive deflection of shear creep of nail-plate-jointed laminated-veneer lumber. The joint was composed of steel gusset and nails, 40 mm in length and...
The natural frequencies, aerodynamic noise, whistling noise, and self-excited vibration between the common circular saw with uniform thickness and the circular saw with step thickness (thin on its outer part a...
The purpose of this study was to investigate the effects of changes in the helical angle of the router bit on the acoustic emission (AE) signal for various workpiece grain angles. The helical angle varied from...
Relations between various extracted basic densities and wood chemical components were investigated by their within-tree variations in Eucalyptus globulus for assistance in the prediction of the properties of wood...
Pit fractures of refractory coniferous heartwoods caused by precompression in the radial direction were investigated and are discussed in terms of improved liquid penetration. Small cracks appeared at the boun...
Blackening in heartwood was investigated in relation to the metal contents and the moisture content in xylem of about 50-year-old seedling sugi (Cryptomeria japonica D. Don) planted in a steeply sloped stand in O...
Highly condensed lignin can be transformed by three reactions — phenolation, hydroxymethylation, and neutral sulfonation — to water-soluble lignosulfonate. To elucidate reactivities and products in the latter ...
myo-Inositol-[2-3H] and d-glucuronic acid-[6-14C] were administered simultaneously to a growing stem of magnolia (Magnolia kobus DC) to label xylan and pectin, respectively, in the cell wall. Determination of th...
To obtain basic information on the stability, decomposition, and recycling of biodegradable polyurethane foam (PUF), we studied hydrolysis and aminolysis of the PUF derived from wattle tannin (WT). The WT-PUF ...
Gypsum particleboard (GPB) has high thickness swelling (TS), high water absorption (WA), and low mechanical properties compared with cement-bonded particleboard. The properties of GPB were improved by adding c...
Lignin content in the cell wall was investigated to examine its relation with growth stress, using an ultraviolet microscopic spectrum analyzer. Although a weak correlation existed between the growth stress an...
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Journal of Wood Science is affiliated with The Japan Wood Research Society.