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沈相七 서울대학교 1962 서울대학교 論文集 Vol.12 No.-
槪括的으로 보아 Cs 137에 對한 織物의 汚染은 植物性이 動物性보다 더 잘 되는 것 같다. (絹織은 例外). 特히 麻織은 汚染이 가장 잘 되며, 除染은 잘 않 된다. 合成섬유織과 毛織은 比較的 汚染도 잘 않될 뿐 아니라 除染도 잘 안되었다. 植物性이건 動物性이건 織物의 C_s-137에 對한 汚染은 酸性에서 잘 안되나, 알카리性에 있어서는 植物性 織의 경우 알카리性의 增加와 汚染量은 서로 反比例하고, 動物性織에서는 正比例한다. C_s-137의 除去에 있어서는 無機 或은 有機物의 Na-鹽 陰이온性의 合成洗劑, 키-레 劑의 Na-鹽 等이 效果的이다. 本 實驗은 原子力院의 一部 硏究 補助費로 이루어진 것이며 始終 一貫 일을 거드러준 서울大學校 農科大學 農化學科生 柳長杰君에게 깊은 謝意를 表한다. (1962年 農化學會에서 發表) Six clothing materials of linen, cotton, wool, silk, rayon and nylon were tested as follows: (a) contamination rate of Cs-137 in each sample. (b) relationship between pH variation and contamination rate. (c) effect of detergents on decontamination rate. The results obtained were as follows: (a) Contamination rates were different for each fibre. Linen had most contamination and wool fibre the least, according to the order of contamination, linen, rayon, silk, cotten, nylon and wool. The times needed to achieve saturation from Cs-137 were eight hours for linen and rayon, twelve hours for nylon, silk and cotton, and cotton, and fifteen hours for wool (Fig.1). (b) Vegetable and animal fibres were contaminated least with strong acidity, and their contamination increased till pH 7.0. The contamination of animal fibres increased continuously with alkalinity to pH 13.0, while vegetable fibres showed a reduction above pH 7.0 (Fig.2) (c) Among others organic and inorganic sodium salts, chelate-sodium salt and synthetic detergents with anionic radicals were effective (Fig.3).
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朴興燮,李光然,沈相七 全南大學校 農漁村開發硏究所 1963 農業科學技術硏究 Vol.1 No.-
That the briquette ashes with rubbish handled daily in the leading cities in Korea amount to immeasurable quantities is one of the greatest problems. This study was conducted to evaluate the effect of briquette ashes with rubbish and organic matter on the physical properties of soil density in an one-year old apple orchard by using Model p-19 moisture and Model P-20 density gauge d/M gauge system with the source of Ra-Be and Cs-137. The soil moisture and soil density varied with the depth of layer of briquette ashes with rubbish put into the planting hole. The deeper the layer of briquette ashes with rubbish, the more the soil moisture and soil density were reduced in the planting hole. The smallest amount of soil moisture and soil density were found in the treatment of 85cm briquette ashes contained rubbish with 5cm sub-soil layer a 90cm depth of planting hole. There was no significant difference among control, law organic and compost treatments. The non-cultivated soil was found very hard as compared with the cultivated soil dug down to a 90cm depth of soil. There was also highly significant between control and treatments with briquette ashes, but non significant treatments with organic matter in the soil density. The greatest growth of trunk circumference was found in the treatment of br iquette ashes with rubbish plus chicken manure. There were no singificance among the treatments of briquette ashes with rubbish plus chicken manure, compost, 7.5cm briquette ashes with 22.5cm soil layer, and 25cm briquette ashes with 15cm soil layer in the growth of trunk circumference. The poor growth was found in the treatments of briquette ashes and soil mixed completely, 85cm briquette ashes contained rubbish with 5cm sub-soil layer and 22.5cm briquette ashes contained rubbish with 7.5cm soil layer.
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李東右,朴愚喆,沈相七 진주농과대학 1966 진주농과대학 연구논문집 Vol.- No.5
P의 吸收에 N 및 K의 濃度가, 그리고 Ca의 吸收에 K 및 Mg의 濃度가 各各 어떤 影響을 미치는 가를 考察하기 爲해, 實驗을 한바 다음고 k같은 結果를 얻었다. 1. P의 吸收는 K의 濃度에는 別로 影響을 받지 않으나 N의 濃度에는 顯著하게 影響을 받았으며, N가 50.4ppm일때는 無窒素區보다 P의 吸收量이 낮았으며 N가 504ppm일때가 P吸收量이 제일 높았다. 2. Ca 吸收는 K의 濃度에 强하게 拮抗作用의 影響을 받았으나, Mg에 對하여는 弱한 拮抗作用이 나타났다. 3. Ca 吸收가 K와 Mg이 共存해 있을 時에는 Mg 濃度가 增加함에 따라 Ca와 K사이의 强한 拮抗作用이 解消되고, 오히려 Mg10(122ppm)區에서는 K0(無加里)區가 K1(35ppm)區보다 낮은 Ca 吸收量을 나타냈다. 4. 培養液中 空氣의 供給有無는 적어도 24時間內의 實驗에서는 ion 吸收量에 大 로 아무런 影響도 주지 못했다. To research the effects on the absorption of P and Ca by the concentrations of N, K and Mg in the young barley plant, this experiment was made. The results obtained were as follows: 1. The absorption of phosphate was effected by the concentration of nitrogen, but was neglectively effected by the potassium. The amount of its absorption was higher in the 504 ppm of nitrogen than in the others, and the next was in the 0 ppm of nitrogen, but in the 50.4 ppm pf nitrogen the absorption of phosphate was lowest. 2. The antagonism between Ca and K was very strongly appeared, and was slightly appeared between Ca and Mg. 3. It was obviously found that the strong antagonism between Ca and K was decreased with concentration of magnesium. 4. The absorption rates of young barley plant cultivated in the nutrient solution with aeration were similar with them without aeration in the short term experiments.
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朴愚喆,李東右,沈相七 진주농과대학 1966 진주농과대학 연구논문집 Vol.- No.5
無機 Ion中 P, S 및 Ca의 吸收速度 및, 培養液中의 이들 Ion濃度가 各 Ion의 吸收量에 어떤 影響을 미치는가를, 大麥 幼植物에서 實驗한 結果는 다음과 같다. 1) 無機 Ion 吸收速度는 P가 가장 빨랐고, 그다음이 S, Ca 順이었다. 2) 培養液의 Ion濃度 增加에 따라 吸收量도 增加했으나 吸收速度가 가장 빠른 P의 飽和濃度가 가장 낮았고 S가 그다음 이었다. 그러나 Ca는 飽和濃度를 나타내지 않았다. 3) 根의 Ion 吸收量에 比例해서 莖葉에로의 移行量도 上昇했다. 4) 培養液中 P의 濃度는 25×10-2mM, S의 濃度는 50×10-2mM, Ca의 濃度는 50×10-2mM 程度가 短時間 實驗에는 좋을 듯 하다. The present experiment used the radio isotopes was established to study the relation between the inorganic ions absorption of the young barley plant and their concentrations contained in the nutrient solution when they were cultivated in the water culture solution. The results obtained were as follows: 1. In the absorption rate of inorganic ions, such as P, S and Ca, in the young barley plant, the phosphate ion was absorbed very fast, and the sulfate and the calcium ion were absorbed very slowly, however, the sulfate ion was faster than the calcium ion from the nutrient solution. 2. The ion absorption was increased at first low concentrations in the young barley plant, however, in accordance with the increasing concentrations the ion absorption was nearly constant. But the calcium ion absorption with insistantly slowly increased with the ion concentrations of calcium from the nutrient solution. 3. The translocation of ions to the shoots from the roots was identically increased with the ions absorption rate of roots of the young barley plant in this short term experiment. 4. The optimum concentration of phosphate was 25×10-²mM, and of sulfate and of calcium, 50×10-²mM respectively, in the nutrient solution during short term experiment.
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