Journal of the Japan Wood Research Society最新文献_第7页

Current Status and Future Prospects of Wood and Tree Biotechnology 木材和树木生物技术的现状与展望

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.200

S. Kajita

引用次数: 0

Visualization of the Distribution of Flavonoids in Larix kaempferi Wood by Fluorescence Microscopy 山柰落叶松木材中黄酮类化合物分布的荧光显微镜观察

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.297

Y. Kawanishi, Nobumasa Bito, R. Nakada, T. Imai

{"title":"Visualization of the Distribution of Flavonoids in Larix kaempferi Wood by Fluorescence Microscopy","authors":"Y. Kawanishi, Nobumasa Bito, R. Nakada, T. Imai","doi":"10.2488/JWRS.61.297","DOIUrl":"https://doi.org/10.2488/JWRS.61.297","url":null,"abstract":"To investigate the accumulation and localization of heartwood extractives in (cid:9488)(cid:9509)(cid:9526)(cid:9517)(cid:9532)(cid:9444)(cid:9519)(cid:9509)(cid:9513)(cid:9521)(cid:9524)(cid:9514)(cid:9513)(cid:9526)(cid:9517) （Lamb.） larch）, fluorescence microscopic observations were performed after staining with 2−aminoethyl diphenylborinate （2−APB, DPBA）. First, three flavonoids （（2(cid:9494), 3(cid:9494)）−taxifolin, （2(cid:9494), 3(cid:9494)）−dihydrokaempferol, （2(cid:9495)）−naringenin） were isolated from Japanese larch heartwood. These compounds were spotted on membranes, which were subjected to fluorescence microscopic observations before and after staining with DPBA. Fluorescence spectra of the solution of these compounds were also measured. As the results, the fluorescence intensities of the flavonoids were enhanced after DPBA staining, and their intensities and color tones were characteristic for each flavonoid. After DPBA staining, fluorescence behaviors of sapwood sections were unchanged compared with the auto-fluorescence （before the staining）, whereas the heartwood showed similar fluorescence to that of the authentic flavonoids, which was confirmed by the membrane tests. Furthermore, after extraction of Japanese larch heartwood sections by methanol, the fluorescence by DPBA staining was significantly weakened. These results indicated that fluorescence from Japanese larch heartwood sections after DPBA staining was derived predominately from the flavonoids in the sections. Consequently, it was revealed that in Japanese larch wood the distribution of heartwood extractive flavonoids could be visualized by fluorescence microscopy after DPBA staining.","PeriodicalId":17248,"journal":{"name":"Journal of the Japan Wood Research Society","volume":"119 3 1","pages":"297-307"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78146386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Functions of Parenchyma Cells in Wood; Material Transport and Heartwood Formation 木材薄壁组织细胞的功能研究物质运输与心材形成

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.131

K. Kuroda

引用次数: 2

Present and Future Tasks for Screw Joints in Timber Structures 木结构螺钉连接的现状和未来任务

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.162

K. Kobayashi

引用次数: 1

Reactions and Molecular Mechanisms of Cellulose Pyrolysis 纤维素热解的反应与分子机理

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.1

H. Kawamoto

引用次数: 18

Perspective on Industrial Application of Specialized Metabolites in the Genomic Era 基因组时代特化代谢物的工业应用展望

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.232

Eiichiro Ono

引用次数: 0

X-ray Mass Attenuation Coefficients for Some Common Wood Adhesives in the Tube Voltage Range from 15kV to 100kV 几种常用木材胶粘剂在管电压15kV ~ 100kV范围内的x射线质量衰减系数

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.308

Takashi Tanaka, K. Adachi, M. Yamada

引用次数: 2

Shaking Table Tests and Seismic Response Analyses of Wooden Houses 木结构房屋振动台试验及地震反应分析

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.154

T. Nakagawa

引用次数: 0

Validation of Method for Estimating Element Strength Distribution of Laminated Veneer Lumber I.: Laminating effect in the strength of laminated veneer lumber@@@単板積層材強度における積層効果层压单板木材元素强度分布估算方法的验证I.层压对层压单板木材强度的影响@@@

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.55

Makoto Koseki, N. Nakamura

{"title":"Validation of Method for Estimating Element Strength Distribution of Laminated Veneer Lumber I.: Laminating effect in the strength of laminated veneer lumber@@@単板積層材強度における積層効果","authors":"Makoto Koseki, N. Nakamura","doi":"10.2488/JWRS.61.55","DOIUrl":"https://doi.org/10.2488/JWRS.61.55","url":null,"abstract":"In this study, we estimated the element strength distribution of Laminated Veneer Lumber （LVL） by the nonlinear least-squares method, supposing an element of veneer with adhesive. However, in or-der to validate this method, we must compare the element strength distribution estimated by this method with that calculated from experimental data. Then, we extracted specimens of 1ply, 2ply and 3ply with an adhesion layer from the remainders of LVL and carried out the same static tests as the experiments for LVL. Comparing the experimental values of 1ply and the estimated values in the pre-vious report, the latter were larger than the former for Modulus of rapture （MOR） in the horizontal and vertical use directions, and tension and compression strengths. Accordingly, a laminating effect was suggested by those strengths. To ascertain this, the strength distributions of 2ply and 3ply were simulated by the experimental data of 1ply. Also the population distributions for the strengths of 2ply and 3ply were estimated by the maximum likelihood method. Comparing the strength distributions simulated by 1ply with the population distributions, the population distribution was larger for MOR in the vertical use direction, tension strength and compression strength. Therefore, in those strengths, it turned out that the laminating effect existed. On the other hand, we could not determine whether or not the laminating effect existed for MOR in the horizontal use direction. : laminated veneer lumber （LVL）, nonlinear least-squares method, element strength, laminating effect.","PeriodicalId":17248,"journal":{"name":"Journal of the Japan Wood Research Society","volume":"5 1","pages":"55-66"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87311096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Wood Physics and Wood-based Material Science Leading the Way to Future Manufacturing Technology 木材物理和木基材料科学引领未来制造技术

Journal of the Japan Wood Research Society Pub Date : 2015-01-01 DOI: 10.2488/JWRS.61.186

Koji Adachi

引用次数: 2