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이원용 한국목재공학회 1987 목재공학 Vol.15 No.2
In the present paper I described the relations of wood ray indicators such as ray height, ray width, number of rays per 0.25㎟, ray spacing and fusiform ray height on the stem of Pinus koraiensis and Larix leptoltpis grown at the Experiment Forest of Kangweon National University. The results may be summarized as follows. 1. The number of rays and ray spacing were generally decreased with the increase of ray height on the sample woods. 2. According to the tree species the patterns of varition of rap width with the increase of roe height were different, namely the relation between ray width and ray height showed some positive correlation on Pinns korniensis and negative on Larix leptolepis. 3. It was recognized that tire variation of fusiform ray height due to the increase of ray height indicated two patterns(the increasing and constant regions) in sampler woods. This boundary seemed to appear at six cells o ray height on Pinus koraiensis and nine cells on Larix lepolepis. 4. The relation between fusiform ray height and number of rags had a negative correlation on Pinus koraiensis, but this tendancy was not obvious on Larix leptolepis. And ray spacing and ray width due to the increase of fusiform ray height were generally decreased. 5. On the whole the values of ray spacing and width became gradually larger in proportion to the increase of number of rays. 6. According to the increase of ray spacing the values of ray width also increased gradually. But this tendency was more clear on Pinus koraiensis than larix leptolepis.
李元用,金南勳 江原大學校 林科大學 森林科學硏究所 1989 Journal of Forest Science Vol.6 No.-
X線回折法을 이용해 소나무 (Pinus densiflora)의 1次組織과 2次組織의 微細構造의 差를 檢討했다. 그 結果는 다음과 같다. 1. 1次組織과 2次組織에서 (200)面과 (004)面의 面間隔은 差異가 없었다. 2. 1次組織과 2次組織의 相對結晶化度는 各各 23%와 35%로 多少 差異가 있었다. 3. 微結晶의 幅은 1次組織과 2次組織과의 差異가 없었다. 4. 1次組織의 微結晶의 配向은 無配向을 나타냈지만 2次組織의 微結晶은 纖維軸에 20∼25。의 配向度를 나타냈다. The fine structures of the Primary and the secondary tissues in Pinus densiflora were examined by X-ray diffraction method. The results obtained are summarized as follows; 1. D-spacings of (200) and (004) planes had little difference in both tissues. 2. The crystallinity index of the primary tissue as observed was 23%, while that of the secondary tissue was 35%. 3. The lateral crystallite size of both tissues had almost equal values. 4. The crystalline substances of the primary and the secondary tissues showed different patterns of orientation. The former had a random orientation, whereas the latter showed an orientation of 20 to 25.