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Official Journal of the Japan Wood Research Society

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Articles

Page 38 of 38

  1. 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...

    Authors: Lilibeth L. Pulido, Toshimitsu Hata, Yuji Imamura, Shigehisa Ishihara and Takeshi Kajimoto

    Citation: Journal of Wood Science 1998 44:BF00521970

    Content type: Note

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  2. 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...

    Authors: Osamu Furusawa, Ryo Funada, Yutaka Murakami and Jun Ohtani

    Citation: Journal of Wood Science 1998 44:BF00521968

    Content type: Note

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  3. 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 ...

    Authors: Yoshihiro Sano, Shu Shimamoto, Makiko Enoki and Haruo Konno

    Citation: Journal of Wood Science 1998 44:BF00521966

    Content type: Original Article

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  4. 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...

    Authors: Kenji Umemura, Akihiro Takahashi and Shuichi Kawai

    Citation: Journal of Wood Science 1998 44:BF00521964

    Content type: Original Article

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  5. 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...

    Authors: Min Zhang, Ee-ding Wong, Shuichi Kawai and Jin-heon Kwon

    Citation: Journal of Wood Science 1998 44:BF00521962

    Content type: Original Article

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  6. 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...

    Authors: Toshihiro Ona, Tetsuya Sonoda, Kazuya Ito and Masaru Shibata

    Citation: Journal of Wood Science 1998 44:BF00521958

    Content type: Original Article

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  7. The rolling shear strength of plywood was evaluated using a flexural vibration test. Test specimens were lauan and Douglas fir three-ply plywoods made from thick veneers. The dynamic shear and Young's moduli w...

    Authors: Heng Xu, Chiaki Tanaka, Tetsuya Nakao, Masahiro Yoshinobu and Hiroyuki Katayama

    Citation: Journal of Wood Science 1998 44:BF00526261

    Content type: Note

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  8. Pernambuco (Guilandina echinata Spreng. syn Caesalpinia echinata Lam.), which has been used for a material of violin bows, was compared with substitutable wood species from the viewpoint of processing properties ...

    Authors: Masahiro Matsunaga and Kazuya Minato

    Citation: Journal of Wood Science 1998 44:BF00526260

    Content type: Note

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  9. A practical approach to enhancing the fire retardancy of wood-based materials by adding fire-retardant chemicals to the glue was developed. Plywoods were manufactured using urea melamine formaldehyde resin mix...

    Authors: Wen-Yu Su, Subyakto, Toshimitsu Hata, Koei Nishimiya, Yuji Imamura and Shigehisa Ishihara

    Citation: Journal of Wood Science 1998 44:BF00526258

    Content type: Original Article

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  10. 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 ...

    Authors: Seiichi Yasuda, Eri Hamaguchi, Yasuyuki Matsushita, Hideyuki Goto and Takanori Imai

    Citation: Journal of Wood Science 1998 44:BF00526256

    Content type: Original Article

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  11. 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...

    Authors: Takanori Imai, Hideyuki Goto, Hiroyuki Matsumura and Seiichi Yasuda

    Citation: Journal of Wood Science 1998 44:BF00526254

    Content type: Original Article

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  12. 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 ...

    Authors: Jin-Jie Ge and Kokki Sakai

    Citation: Journal of Wood Science 1998 44:BF00526253

    Content type: Original Article

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  13. We prepared carpet cleaners containing three wood oils extracted from Thujopsis dolabrata Sieb. et Zucc. var. hondai Makino, Chamaecyparis obtusa Endl., and Chamaecyparis taiwanensis Masamune et Suzuki and studie...

    Authors: Noboru Yamamoto, Yoshifumi Miyazaki and Keisuke Sakuda

    Citation: Journal of Wood Science 1998 44:BF00526251

    Content type: Original Article

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  14. 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...

    Authors: Takashi Okuyama, Hiroshi Takeda, Hiroyuki Yamamoto and Masato Yoshida

    Citation: Journal of Wood Science 1998 44:BF00526250

    Content type: Original Article

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  15. The feasibility of applying ultrasonics to the chlorophyll extraction of bamboo culm was evaluated to establish an efficient reliable method for chlorophyll extraction from the epidermis of bamboo culm. The re...

    Authors: Shang-Tzen Chang, Sheng-Yang Wang and Jyh-Horng Wu

    Citation: Journal of Wood Science 1998 44:BF00521879

    Content type: Note

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  16. Sitka spruce (Picea sitchensis Carr.) wood was heated for 0.5–16.Oh at temperatures of 120°–200°C in nitrogen gas or air. The values for Young's modulus, shear modulus, and loss tangent were measured by free-free...

    Authors: Yoshitaka Kubojima, Takeshi Okano and Masamitsu Ohta

    Citation: Journal of Wood Science 1998 44:BF00521878

    Content type: Note

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  17. The effect of plantation spacings (types A-E) on the bending strength and dynamic modulus of elasticity of 41-year-old Taiwan-grown cedar (Cryptomeria japonica D. Don) was investigated. The results indicate that ...

    Authors: Song-Yung Wang and Chih-Yu Ko

    Citation: Journal of Wood Science 1998 44:BF00521876

    Content type: Note

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  18. Wood charcoal carbonized at various temperatures was analyzed by X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffractometry to investigate the changes of c...

    Authors: Koei Nishimiya, Toshimitsu Hata, Yuji Imamura and Shigehisa Ishihara

    Citation: Journal of Wood Science 1998 44:BF00521875

    Content type: Original Article

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  19. The reaction during the early stage of photodiscoloration of constituents in western hemlock [Tsuga heterophylla (Raf. Sarg., Pinaceae] sapwood was investigated with chemical methods. The main photodiscoloring co...

    Authors: Fumio Kawamura, Megumi Miyachi, Shingo Kawai and Hideo Ohashi

    Citation: Journal of Wood Science 1998 44:BF00521874

    Content type: Original Article

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  20. Many products and abundant wastes from tropical plantations, such as latex, palm oil, and coconut production due to replantation, are waiting effective utilization. Nonutilized tropical biomass — oil palm (Elaeis...

    Authors: Satoshi Suzuki, Evelyn B. Rodriguez, Kenji Iiyama, Kyoko Saito and Hiroyuki Shintani

    Citation: Journal of Wood Science 1998 44:BF00521873

    Content type: Original Article

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  21. The piezoelectricity of cyanoethylated hydroxyethylcellulose was investigated. Elastic, piezoelectric, and dielectric relaxations were observed at −80° to −60°C and 0° to 20°C at a frequency of 10Hz. The activ...

    Authors: Nobuyuki Hirai, Kooji Ootake, Kyouji Suzuki, Nobuo Sobue, Munehiro Date and Toyoko Watanabe

    Citation: Journal of Wood Science 1998 44:BF00521872

    Content type: Original Article

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  22. This study investigated the relation between piezoelectric behavior and the deformation of trachieds in real time under combined compression and vibration stresses. Scanning electron microscope images were rec...

    Authors: Takahisa Nakai, Naoyasu Igushi and Kose Ando

    Citation: Journal of Wood Science 1998 44:BF00521871

    Content type: Original Article

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  23. The changes in the velocity of ultrasonic waves propagating in wood parallel to the direction of applied stress are discussed. The ultrasonic mode was longitudinal waves traveling along the direction of applie...

    Authors: Yasutoshi Sasaki, Toshihiro Iwata and Kosei Ando

    Citation: Journal of Wood Science 1998 44:BF00521870

    Content type: Original Article

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  24. When measuring the shear modulus of wood by static bending tests, the basic theory is dependent on Timoshenko's bending theory. The shear modulus obtained by static bending is a much smaller value than that de...

    Authors: Hiroshi Yoshihara, Yoshitaka Kubojima, Koji Nagaoka and Masamitsu Ohta

    Citation: Journal of Wood Science 1998 44:BF00521869

    Content type: Original Article

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  25. The transverse shrinkage behavior of early wood and late wood tracheids of radiata pine (Pinus radiata D. Don) was investigated by the power spectrum analysis. The representative cell model shapes before and afte...

    Authors: Ugai Watanabe, Misato Norimoto, Minoru Fujita and Joseph Gril

    Citation: Journal of Wood Science 1998 44:BF00521868

    Content type: Original Article

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  26. The color of 97 species of wood specimens from French Guiana was measured on their radial and tangential surfaces with a colorimeter. We obtained the tristimulus values of X, Y, and Z of the 10° standard observer...

    Authors: Yoshihiko Nishino, Gérard Janin, Bernard Chanson, Pierre Détienne, Joseph Gril and Bernard Thibaut

    Citation: Journal of Wood Science 1998 44:BF00521867

    Content type: Original Article

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