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Chemical structures of p-menthane monoterpenes with special reference to their effect on seed germination and termite mortality
Springer Science and Business Media LLC - Tập 59 Số 3 - Trang 229-237 - 2013
Nobuhiro Sekine, Sakae Shibutani
Pyrolysis GC-MS analysis of tars formed during the aging of wood and bamboo crude vinegars
Springer Science and Business Media LLC - Tập 56 - Trang 47-52 - 2009
Sung Phil Mun, Chang Sub Ku
Constituents of tars formed during the aging of bamboo (Phyllostachys pubescens), oak (Quercus serrata), and pine (Pinus densiflora) wood crude vinegars were analyzed by pyrolysis-gas chromatography (Py-GC) and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) to investigate their origination. The pyrolysate of tars obtained from the wood and bamboo crude vinegars were almost identical and...... hiện toàn bộ
Two-step hydrolysis of Japanese cedar as treated by semi-flow hot-compressed water
Springer Science and Business Media LLC - Tập 56 - Trang 331-338 - 2010
Natthanon Phaiboonsilpa, Kazuchika Yamauchi, Xin Lu, Shiro Saka
Two-step hydrolysis of Japanese cedar (Cryptomeria japonica) was studied as treated by semi-flow hot-compressed water at 230°C/10 MPa for 15 min and 280°C/10 MPa for 30 min as the first and second stages, respectively. At the first stage, hemicelluloses and para-crystalline cellulose, whose crystalline structure is somewhat disordered, were found to be selectively hydrolyzed, as well as lignin dec...... hiện toàn bộ
Factors influencing retention behavior of aluminum compounds on handsheets
Springer Science and Business Media LLC - Tập 45 - Trang 154-160 - 1999
Masato Kato, Akira Isogai
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 their aluminum contents. When deionized water was used in the handsheet-making process, aluminum contents in the handsheets had a plateau level of 0.7mg/g in the range of 1%–8% Al2(SO4)3 addition...... hiện toàn bộ
Reinforcement of wood flour board containing ligno-cellulose nanofiber made from recycled wood
Springer Science and Business Media LLC - Tập 61 - Trang 492-499 - 2015
Yoichi Kojima, Atsushi Ishino, Hikaru Kobori, Shigehiko Suzuki, Hirokazu Ito, Rie Makise, Itsuro Higuchi, Masaki Okamoto
Wood-based materials are widely used in residential construction. These materials can be made from virgin or recycled wood, and most of the materials are fabricated with chemical adhesives. Finding replacements for such chemical adhesives poses major challenges. This study explored nanofiber technology as an alternative to these adhesives. Previous studies have shown that the three-dimensional bin...... hiện toàn bộ
Formation and chemical structures of acid-soluble lignin I: sulfuric acid treatment time and acid-soluble lignin content of hardwood
Springer Science and Business Media LLC - Tập 47 - Trang 69-72 - 2001
Seiichi Yasuda, Kazuhiko Fukushima, Akihiro Kakehi
To elucidate the formation mechanism of acidsoluble lignin (ASL) formed in the Klason lignin determination, beech wood meals were treated with sulfuric acid (SA) under various conditions, and the ASL solution was extracted with CHC13. The results indicated the following: (1) wood components yielding ASL are dissolved in 72% SA during the initial stage; (2) the quantity of ASL is highest during the...... hiện toàn bộ
Evaluating the effect of heat treating temperature and duration on selected wood properties using comprehensive cluster analysis
Springer Science and Business Media LLC - Tập 60 - Trang 255-262 - 2014
Fei Guo, Rongfeng Huang, Jianxiong Lu, Zhangjing Chen, Yongjian Cao
In this study, twenty-five heat treatments were conducted at the various treating conditions of five temperatures and five durations. At each treatment, 15 poplar specimens were used. Twelve variables that represented wood color, physical and mechanical properties and durability were measured for both treated and untreated specimens. To evaluate the effect of heat treatment on the wood performance...... hiện toàn bộ
Decolorization of kraft pulp bleaching effluent by a newly isolated fungus,Geotrichum candidum Dec 1
Springer Science and Business Media LLC - Tập 48 - Trang 402-408 - 2002
Noboru Shintani, Yasushi Sugano, Makoto Shoda
Kraft pulp bleaching effluent supplemented with glucose was decolorized by a newly isolated fungusGeotrichum candidum Dec 1 (Dec 1) that showed a wide decolorizing spectrum to synthetic dyes. When the glucose concentration in the effluent was 30 g/l, the color removal and the reduction of absorbable organic halogens were 78% and 43% after 7 days culture, respectively. The average molecular weight ...... hiện toàn bộ
Intrafiber distribution of aluminum components in alum-treated handsheets
Springer Science and Business Media LLC - Tập 46 - Trang 75-78 - 2000
Masato Kato, Akira Isogai, Fumihiko Onabe
The distribution of aluminum components in cross sections of pulp fibers for alum-treated handsheets was successfully measured by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis. In this case, gas-phase osmium coating of paper samples is necessary for the samples to have improved stability to long-term irradiation by electron beams at high magnification during the SEM...... hiện toàn bộ
Discriminant analysis of wood-based materials using near-infrared spectroscopy
Springer Science and Business Media LLC - Tập 49 - Trang 275-280 - 2003
Satoru Tsuchikawa, Kaori Yamato, Kinuyo Inoue
This study deals with the suitable discriminant techniques of wood-based materials by means of near-infrared spectroscopy (NIRS) and several chemometric analyses. The concept of Mahalanobis' generalized distance, K nearest neighbors (KNN), and soft independent modeling of class analogy (SIMCA) were evaluated to determine the best analytical procedure. The difference in the accuracy of classificat...... hiện toàn bộ
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