Regression models on the age-affecting and microfibril angle of Acacia mangium
Regression models on the age-affecting and microfibril angle of Acacia mangium
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DOI：
10.1007/s13196-011-0010-y
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发表时间：
2010-12
影响因子：
0.7
通讯作者：
N. Abdullah;Tamer A. Tabet;F. Aziz
中科院分区：
文献类型：
--
作者：
N. Abdullah;Tamer A. Tabet;F. Aziz
各种木材样品的晶面衍射图案吸引了科学研究来确定晶体学测量。因此，选择沙巴的热带硬木芒果相思作为实验数据。测量了年龄影响因素;考虑了不同年龄的反射角（θ）、相对强度、半高全宽（FWHM）、晶体结构中两个相邻原子之间最近的距离（d间距）和峰高。树的髓和皮。用最小二乘法和三次样条插值法对不同年龄的微纤丝角、MFA进行回归分析。后者能够插值多项式的三阶。最佳角度的范围被认为是有益的林农在决定树木的种植和收获的时间。
Diffraction patterns arising from crystal planes of various sample forms of wood trees had attracted scientific research in determining the crystallographic measurements. As such the tropical hard wood in Sabah,Acacia mangiumwas chosen for experimental data. Age-contributing factors were measured; the angle of reflection (θ), relative intensity, full width at half maximum (FWHM), the nearest between two neighbouring atoms in the crystalline structure (d-spacing) and the peak height, had been taken into account at different ages, pith and bark of tree. Regressions were done in comparing the microfibril angle, MFA at different ages using the least-square method and cubic-spline interpolation. The latter was able to interpolate a polynomial up to the third order. The range of the optimum angle was found to have benefited foresters in deciding the time for tree cropping and harvesting.