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李政明,沈相七,金武成 경희대학교 부설 식량자원개발연구소 1981 硏究論文集 Vol.2 No.-
Experiments were conducted to find out the effects of environmental conditions and some other factors influencing the rooting and growth of mungbean cuttings in 1980 and 1981. More roots were formed in the cuttings grown under high light intensity. However, the effect of auxin(indole butyric acid) was more apparent under led light intensity condition. Removal of the growing point significantly increased the root number, but the removal of 1/2∼1 leaf did not influence the root number. The food seasoning material, Aimi(99.5% sodium-L-glutamate and 0.5% sodium-5'-ribonucleotide), showed auxin-like activities.
崔元凱,沈相七 진주산업대학교 1968 論文集 Vol.1 No.-
1.大麥根에 依한 燐酸의 吸收는 培養液溫度의 上昇과 比較해서 增加아혀 25℃에서 最大値에 이르고 그 以上에서는 오히려 減小한다. 2.地上部로의 移動도 온도에 따라 현저히 증가했다가 30℃에서는 역시 急降下하는데 이것은 吸收時보다도 온도에 더 예민했다. 3.舊根이 新根보다도 燐酸의 吸收能이 越等하였다. This experiment was designed to investigate the optimum temperature of phosphorous uptake in barley plants, and the absorption actvity of young and old roots by using radioisotope p^32. The results obtained were as follows. 1.The absorption of p^32 was increased gradually by raising temerature, reached to maximum amounts at 25℃, but decrease above 25℃. 2.The increase tendencies of absorption by roots and the transference to stem were seemed to be same but the amounts of transference was remar kably decreased above 25℃. 3.The specific activity (cpm/gr.)of p^32 was lower in the barley plants with the the only young roots than that of the barley from which the old roots were not removed. So it seemed that the old roots were more concerned with phosphorous absorption than the young roots.
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.
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.
Shim, Sang Chil,U., Zang Kual,Kim, Chung Kie,Park, Woo Chul 한국토양비료학회 1972 한국토양비료학회지 Vol.5 No.2
본실험은 유수형성기에 2일간 배수할 때 질소질 비료의 비종(유안과 요소) 및 시용시기(이앙기와 유수형성기)가 수도의 질소이용율에 미치는 영향을 보기 위해서 기후와 토양이 상이한 부산(동아대학교 농과대학 포장)과 서울(방사선 농학연구소 농장, 금곡)에서 농광 및 봉광 두품종을 사용해서 1970년에 실시 되었다. 유수 형성기에 2일간 배수하고 질소질 비료를 시용한 처리는 상시 담수구에 비해서 A-Value에 있어서 유의차가 없었으나 비료의 시용시기나 비종간에는 뚜렸한 차이가 있었다. 유수형성기에 추비하는것이 이앙기에 기비로서 시용하는 것 보다 자실에서 본 비료의 이용율이 4~5배 높았다. 자실의 질소함량은 봉광의 것이 실험지역에 관계없이 농광의 것보다 높았으며, 비료 이용율도 높은 경향을 나타내었다. 부산토양에서의 질소의 A-Value가 품종이나 비종에 관계없이 서울의것 보다 항상 높았던 것은 부산 토양의 질소함량이 높은데 기인하는 것으로 생각된다.
Carbonylation of 1-Bromo-2,6-bis(bromomethyl)benzene Catalyzed by Cobalt Carbonyl
Sang Chul Shim,Shin Ae Chae,Dong Yeob Lee,Young Zoo Youn,Jae Goo Shim,Chil Hoon Doh Korean Chemical Society 1993 Bulletin of the Korean Chemical Society Vol.14 No.4
Dialkyl 1-bromobenzene-2,6-diacetates were easily prepared by the carbonylation of the moiety of benzylic bromide in 1-bromo-2,6-bis(bromomethyl)benzene with alcohol in the presence of NaOAc< ${\cdot}$3H$_2$O and a catalytic amount of Co$_2$(CO)$_8$under the atmospheric pressure of carbon monoxide at room temperature in excellent yield. Alkyl 2,6-bis(alkoxymethyl)benzoates were obtained by the carbonylation of the moiety of aryl bromide in 1-bromo-2,6-bis(alkoxymethyl)-benzene, which derived from 1-bromo-2,6-bis(bromomethyl)benzene, alcohol, NaOR, and CH$_3$I under the same conditions. Alkyl 2,6-bis(carboxymethyl)benzoate was also obtained in a trace amount for 24 hrs at room temperature.