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The protected structure of β-oxoacteoside (tomentoside A), 2-oxo-2-(3,4-dihydroxyphenyl)ethyl 3-O-(2,3,4-tri-O-acetyl-α-l-rhamnopyranosyl)-4-O-caffeoyl-β-d-glucopyranoside 14 was synthesized in 14% overall yield ...
Due to the complexity of delignification, it is still not accurate enough to describe the whole chlorine dioxide delignification system with mechanistic models such as kinetic studies. The simple aim of predic...
The purpose of this study was to compare the distribution of moisture contents (MCs) along the radial direction during radio-frequency/vacuum (RF/V) drying of log cross sections of heartwood (HLC) where sapwoo...
This study investigated the thermophysiological responses of healthy subjects that sat on the plywood covering of the ONDOL floor heating system. Environmental chambers were constructed for this study, wherein...
The known propelargonidin, afzelechin-(4α→8)-afzelechin (1), the known lignans 7′-hydroxynortrachelogenin (2), epinortrachelogenin (3), nortrachelogenin (4), hydroxymatairesinol (5), allohydroxymatairesinol (6), ...
Cationic polymers that acted as the retention aids for usual rosin sizes in neutral papermaking were prepared from sulfuric acid lignin (SAL), one type of acid lignin. To convert SAL to the cationic polymer (M...
A ring-opening polymerization of cyclic esters ε-caprolactone (CL) and/or l-lactide (LACD) was carried out in the presence of methyl-α-d-glucoside (m-Glc) as an activated substrate and tin(II) 2-ethylhexanoate (S...
High moisture content, flat sawn Japanese cedar (Cryptomeria japonica D. Don) veneer was compressed using a roller press to mechanically remove water. The amount of water removed depended on the amount of compres...
We investigated the physiological and psychological responses of nine normal men to the prolonged light floor-impact sounds of 60 dBA and 80 dBA generated by a tapping machine in a two-story wooden house. Bloo...
Wood-based composites (medium density fiberboard, hardwood plywood, softwood plywood, particleboard, and oriented strand board) treated with a mixture formulation of 3-iodo-2-propynyl butylcarbamate (IPBC) and...
We investigated the physiological and psychological responses of ten healthy male volunteers to a single heavy floor-impact sound generated by dropping an automobile tire from heights of 50, 100, and 150 cm in...
Two species of Japanese subterranean termite, Coptotermes formosanus Shiraki and Reticulitermes speratus (Kolbe), were used in an investigation of the optimum temperature–relative humidity (RH) combination for th...
Preparation of liquid polyols from d-(+)-glucose (Glc) and its derivative, methyl-α-d-glucoside (m-Glc), has been studied. Direct reaction of ε-caprolactone (CL) with Glc (CL : Glc = 2 : 1–5 : 1 in weight ratio) ...
Gallic acid and catechin derivatives were oxidized in alkaline solution (pH 10.0–13.0) with K3[Fe(CN)6] under anaerobic conditions, and electron spin resonance (ESR) spectra of the radicals produced were measured...
Bolted cross-lapped joints (BCLJs) are one of the basic jointing methods used in Japan and European countries. There are, however, some problems in the design of BCLJs. With increasing use of large-scale woode...
Liquefactions of cellulose powder, steamed lignin, alkali lignin, and their mixtures were carried out to analyze the reaction process of wood using polyhydric alcohol. The liquefaction of wood proceeded immedi...
A modified rate equation, in which the diffusion of reagent was taken into consideration, was proposed and applied to results reported previously for the acetylation of wood. The equation was fitted more succe...
This study focused on the relationship between stress level and the fire resistance of structural lumber. The 210 samples were prepared from 15-year-old trees of Acacia mangium from the Forest Estate Plantation, ...
We investigated a genotype-based assay to discriminate the dry rot fungi Serpula lacrymans. DNAs were extracted from 74 isolates from the northern half of Japan, and internal transcribed spacers (ITS) were amplif...
A method is described for producing viable protoplasts from germinating conidia (germlings) of Ophiostoma picea. The use of MgSO4-based osmotic stabilizers significantly improved protoplast release, as did the us...
Moso bamboo vinegar was treated with extractive and separation methods. The acidic, neutral, and phenolic fractions separated from ether-extracted vinegar were analyzed by gas chromatography and gas chromatogr...
In order to analyze the structural features of small lignin fragments that are closely associated to polysaccharides, lignin carbohydrate complex (LCC) with low lignin content was extracted with water from the...
Optimization of the manufacturing conditions of the veneer strand flanged I-beam invented in the previous study was investigated using different combinations of strand dimensions, resin types between web and f...
The effects of stilbene glucosides and related compounds on termite feeding behavior were investigated using paper disc methods against the subterranean termite Reticulitermes speratus. The stilbene-rich fraction...
Depth profiling analysis of wood samples using Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) was carried out to obtain information on the chemical changes caused by weathering. The test samp...
Supply of clear, unstained logs from an export country is important economically as well as in reducing the biosecurity risk to an importing country such as Japan. Although conditions found within the holds of...
Calocedrus formosana Florin (Cupressaceae) is an endemic tree to Taiwan. To evaluate the antioxidant activity of the plant extracts from heartwood, bark, and leaf of C. formosana, assays for 1,1-...
Mycelial growth and mushroom yields of three strains of Pleurotus eryngii produced on wheat bran-supplemented umbrella plant (Cyperus alternifolius) substrate were assessed using surface brightness, bromophenol b...
A wooden lattice floor with high stiffness and damping capacity has been developed to solve noise problems in wooden apartment houses. The lattice floor consisted of Douglas fir glulam beams with inserted stee...
Shrinkage of green cane (Arundo donax L.) was measured during air-drying at room temperature. The cane began to shrink at 150% moisture content due to a remarkable collapse of parenchyma cells. The collapse recov...
This study was carried out to investigate the effects of end-taping of sapwood (ETS) and removal of sapwood (ROS) treatments of log cross sections on the radial distributions of moisture content (MC) and tange...
The hydration behavior and strength performance of cement mixed with exploded wood fiber strand (WFS) obtained by the water-vapor explosion process have been studied previously. In the current study, the micro...
Dielectric measurements at 9.8 GHz and 2.45 GHz were made for the three hardwoods Euramerican hybrid poplar, alder, and oriental beech. The method used was based on Von Hippel’s transmission line method. The m...
The effects of physical properties of wood, including specific gravity, porosity, and water retention, on the water activity (a w) of wood meal media for the cultivation of edible mushrooms were e...
To obtain high-strength phenol formaldehyde (PF) resin-impregnated compressed wood at low pressing pressure, the effects of resin content, preheating temperature, pressing temperature, and pressing speed on th...
The deformation behavior of low molecular weight phenol formaldehyde (PF) resin-impregnated wood under compression in the radial direction was investigated for obtaining high-strength wood at low pressing pres...
Under fixed cutting conditions, the surface finish roughness is correlated to the grain angle. However, the means of determining the grain angle automatically and accurately is still a challenge for on-line co...
The smell of food is one of the most important factors in assessing its quality. Concerning the smell of dried shiitake mushrooms [Lentinula edodes (Berk.) Pegler], 1,2,3,5,6-pentathiepane, commonly known as lent...
The nanometer scale structure of cell walls in sugi wood (Cryptomeria japonica D. Don) and the hydration dependence were examined by the small angle X-ray scattering technique. Disk-shaped scattering patterns wer...
Specimens made of clear wood from Scots pine (Pinus sylvestris L.) were compressed semi-isostatically at 25°C in a Quintus press. Pressure ranged from 0 to 140 MPa and the maximum decrease in the crosscut area wa...
In this report, we undertook studies of the viscoelastic properties of wood from the viewpoint of the fine structure and properties of the constituent materials in the wood cell wall. To measure the mechanical...
Mechanical property changes due to the moisture content (MC) and/or temperature changes were examined for 15 Indonesian wood species. A static bending test was carried out at 20°C, 65% relative humidity (air-d...
To clarify the behavior of whole lignins in wood cell walls during alkaline nitrobenzene oxidation, the delignification process from cell walls in normal and compression woods of Chamaecyparis obtusa Endl. (Cupre...
Sugi (Cryptomeria japonica D. Don) wood was treated with supercritical water (≫374°C, ≫22.1 MPa), and fractionated into the water-soluble portion, the methanol-soluble portion, and the methanol-insoluble residue....
Microscopic examination showed the cell wall decay pattern produced by the brown-rot fungus Coniophora puteana to be different from the degradation pattern known to be typical for brown-rot fungi. Erosion and thi...
Transgenic hybrid aspens that expressed a bacterial gene for an enzyme involved in the degradation of hydroxycinnamates, feruloyl-CoA hydratase/lyase (FerB), were produced by Agrobacterium-mediated transformation...
Chloroform formation, balance, and discharge were estimated in a kraft pulp mill that used an elemental chlorine-free (ECF) bleaching line with chlorine dioxide as well as an effluent treatment process. This w...
I-beams flanged with veneer strands with medium density fiberboard (MDF) or particleboard as web material were produced by hot pressing. The forming and pressing method used a special metallic mould that allow...
Five kinds of ammonia fungi were observed in a Pasania edulis forest after treatment with 1600 g · m−2 of urea. The number of fungal fruiting bodies decreased with time, and disappeared completely within 6 weeks....
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Journal of Wood Science is affiliated with The Japan Wood Research Society.