Eucalyptus nitens specimens were thermally modified under open and closed systems. The anatomical characteristics from selected modifications that presented similar mass losses were investigated by analyzing images taken from scanning electron microscopy, transmission light microscopy, and X-ray micro-computed tomography. Wood cell wall thickness, fiber, and lumen area were measured and compared to unmodified specimens, and the crack formation after modification was also analyzed. There was only a slight decrease in the measured characteristics when compared to unmodified specimens. The wood cell wall thickness was less affected than the fiber and lumen areas, and both modifications presented similar crack formations. Overall, there were no significant differences between open and closed system modifications in the anatomical structure.

桉树在开放和封闭系统下对样品进行热改性。通过分析扫描电子显微镜，透射光显微镜和X射线显微计算机断层扫描所拍摄的图像，研究了表现出类似质量损失的选定修饰的解剖学特征。测量木质细胞壁的厚度，纤维和管腔面积，并将其与未改性的试样进行比较，并分析改性后的裂纹形成。与未修改的样本相比，测量的特性仅略有下降。木质细胞壁的厚度比纤维和管腔区域受到的影响较小，并且两种改性均表现出相似的裂纹形成。总体而言，开放和封闭系统在解剖结构上的修改之间没有显着差异。