Analysis of Anisotropic Periodicity on Cell Arrangement and Microfibrillar Orientation by Several Diffraction Methods

几种衍射方法分析细胞排列和微纤维取向的各向异性周期性

• 批准号: 01480076
• 负责人: FUJITA Minoru
• 金额: $ 4.42万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01480076/
• 关键词: X-ray diffraction; Electron diffraction; Laser diffraction; Anisotropy of wood morphology; Fourier transform; Microfibrillar orientation; Autocorrelation function; Morphological model of wood cells; 木材の周期構造; 木材の物性解析; ミクロフィブリル; 光学的フ-リエ変換; 高速フ-リ

Anisotropic wood morphologies were analyzed by the X-ray, electron and laser diffractions (OFT) in the aspect of the Fourier transform having developed mathematical processes. Wood morphologies were divided into three oders : cell wall level; cell level ; tissue level. Microfibrillar angle among the structures of cell wall level is very important in the wood mechanics and were evaluated by the X-ray diffraction and the electron diffraction. In the former case, the mean value of the angle on many cell walls could be measured on the pressed wood specimens being operated by a new technique. The angle on the small area were surveyed in the latter case. Anisotropic microfibrillar distribution were estimated by the both methods.Anisotropy on the both cell and tissue levels were analyzed by the OFT and also FFT having similar ability to the OFT. On the transverse sections of soft woods, cell wall thickness, cell shapes, cell arrangements could be evaluated quantitatively, and even the fluctuation on these morphological elements were traced. The typical structure of cells was reconstructed using these values. The tissue level anisotropy was examined on the transition from the early wood to the late wood in softwoods, between vessels and fibers in hard woods and on the distribution of rays.

通过 X 射线、电子和激光衍射 (OFT) 在傅里叶变换方面分析了各向异性木材形态，并开发了数学过程。木材形态分为三级：细胞壁级；细胞水平；组织水平。细胞壁层结构之间的微纤维角度在木材力学中非常重要，并通过X射线衍射和电子衍射进行了评估。在前一种情况下，可以在通过新技术操作的压制木材样本上测量许多细胞壁上的角度平均值。在后一种情况下测量了小区域上的角度。两种方法都估计了各向异性微纤丝分布。OFT 和与 OFT 具有相似能力的 FFT 都可以分析细胞和组织水平上的各向异性。在软木的横切面上，可以定量评价细胞壁厚度、细胞形状、细胞排列，甚至追踪这些形态元素的波动。使用这些值重建细胞的典型结构。研究了软木中从早期木材到晚期木材的过渡、硬木中导管和纤维之间以及射线分布的组织水平各向异性。

项目成果

前川 知之: "木材の細胞配列の解析一極座標によるパワ-スペクトルパタ-ンの評価" 第41回日本木材学会大学(1991.4). 41. (1991)

Tomoyuki Maekawa：“利用单极坐标分析木材细胞排列和功率谱模式的评估”第41期日本木材科学研究所大学（1991.4）41。（1991）。

前川 知之: "木材の周期構造解析III. 針葉樹横断面における 仮道管の2次元的配置の評価" 京大演習林報告. 62. 275-281 (1990)

Tomoyuki Maekawa：“木材的周期性结构分析 III. 针叶树横截面中管胞的二维排列的评估”京都大学研究森林报告 62. 275-281 (1990)。

Maekawa: "Periodical analysis of wood structure III Evaluation of two-dimensional arrangements of softwood tracheids on transverse sections" Bull. Kyoto Univ. Forests. No. 62. 275-281 (1990)

前川：《木材结构的周期分析III 横断面上软木管胞二维排列的评价》公牛。

M.Fujita: "Ocurrence of storiecd arraxgement of rays in Aesculus and the Periodical analysis by Fourier trans formation" Proc.Pacific Regional Wood Anatomy Conference,Los Banios,Phipines,1989. (1989)

M.Fujita：“七叶树中射线的分层排列和傅里叶变换的周期分析”Proc.Pacific Regional Wood Anatomy Conference，Los Banios，菲律宾，1989。

畑 茂樹: "圧締試片のX線回折法と剥離切片偏光法によるフィブリル傾角の評価" 第40回本木材学会大会要旨集. 40. 218 (1990)

Shigeki Hata：“使用压制样品的 X 射线衍射和剥离截面偏振评估原纤维倾斜度”日本木材学会第 40 届年会摘要 40. 218 (1990)。