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- 저자 : 愼鏞直 (검색결과 3 건)
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愼鏞稷,朱東豹 亞洲大學校 1983 論文集 Vol.6 No.-
The effect of the distance between two adjacent mixing points on overall mass transfer coefficient was studied for distillation experiments of binary system, acetone-methanol in a 26.5 mm I.D. laboratory column designed to simulate the flow characteristics of an industrial packed distillation column. Five different types of packing elements were used and a quantitative empirical correlation was proposed between overall mass transfer coefficient and the characteristic packing length. The analysis of the present experimental result and of the previous work showed that the general correlation between KG and characteristic packing length would be a hyperbolic function and that if the liquid film is not rippling, as was the present case, the variation of overall mass transfer coefficient could be represented by a linear function of the number of mixing points.
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李鐘郁,愼鏞直,朴元學,金德勳 嶺南大學校附設 基礎科學硏究所 1988 基礎科學硏究 Vol.8 No.-
The chromosome study was performed in some species on the Korean Libellulidae by using squash techniques and lactopropionic orcein stain in order to define species relationship between them. The numerical and morphological differences were shown in the chromsome between the species of the stages of spermatocyte metaphase. The results obtained were summarized as follows: 1. The pattern of standard chromosome number in these species is divided into two groups; Orthetrum albistylum speciosum (UHLER), Orthetrum triangrlare melanina (SELYS), Rhyothemis fulignosa HAGEN are 13 in the haploid chromosome number. But, Crocothemis servilia servilia DRURY and Synoetrum eroticum (SELYS) are 12. 2. The shape of chromosome in these specie in divided into two groups; O. albistylum, S. eroticum eroticum, R. fulignosa, O. triangulare melania are bar or clover in shape at the spermatocyte metaphase. These species seem to be holocentric chromosome. On the other hand, C. servilia servilia is gloval and this species has monocentric chromosome. 3. The sex chromosome of five species ( O. albistylum speciosum, O. Triangulare melania, R. fulignosa, C. servilla servilia, S. eroticum eroticum ) are XO type. 4. Three species ( O. albistylum speciosum, O. Triangulare melania, S. eroticum eroticum ) shows the fragment chromosome in the spermatocyte metaphase. As the results, five species on the Korean Libellulidae (O. albistylum speciosum, O. triangulare melania, R. fulignosa, C. servilla servilia, S. eroticum eroticum ) is similar to each other in the external morphology, But, in the analysis of chromosome, these species is different to some degree.
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