Characterizing Visually Objectionable and Nonobjectionable Medullated Fibers in Mohair

摘要

本研究的目的是确定和定义视觉的有缺陷有髓的特点（即"粗 毛型）纤维和无缺陷纤维的有髓的马海毛和建立其特征（S )最 好的区分他们，应当检査整个纤维，而非纤维片段，后者已在早些时候研究了案例。它被发现的平均髓质径比（MED比）个人视 宽有缺陷的有髓纤维整体重叠显着的视觉无缺陷的有II纤维 分布，确定以前的研究，分析纤维片段，Med比率法本身并不代 表一致和准确区分视觉上有缺陷的和无缺陷有髓马海毛纤维之间 可靠的标准。增加上纤维直径、髓质，类型和长度的条件Med比 率法仍没有出现大幅提高的区分两种类型的纤维之间的能 力。这方面，加上髓质细胞的性质，将是今后研究的重点。%The objectives of this research were to determine and define the characteristics of visually "objectionable medullated" (i.e., "kemp type") fibers and "nonobjectionable medullated" fibers in mohair and to establish which characteristic(s) best distinguish between them, when examining whole fibers, as opposed to fiber snippets, the latter having been the case in earlier research. It was found that the mean medulla to diameter ratio (Med Ratio) distribution of individual visually objectionable medullated whole fibers overlapped significantly with that of visually nonobjectionable medullated fibers, confirming previous studies on fiber snippets, that Med Ratio on its own does not represent a reliable criterion for consistently and accurately distinguishing between visually objectionable and nonobjectionable medullated mohair fibers. Taking fiber and medulla diameter, type and length into consideration in addition to Med Ratio did not appear to substantially improve the ability to differentiate between the two types of fibers. This aspect, together with the cellular nature of the medulla, will be the focus of future research.