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검정곰팡이 (Aspergillus niger) 의 포자형성에 미치는 cAMP , 테오필린 및 카페인의 영향에 관한 연구
김종협,고영주 한국균학회 1987 韓國菌學會誌 Vol.15 No.4
Aspergillus niger van Tieghem was cultured by the method of synchronous and submerged culture. The sporulation occurred through the culture and its life cycle and differentiation were completed in the experiments. The effects of cAMP, theophylline and caffeine on the sporulation of A. niger were investigated. In the sporulation medium, the sporulation was stimulated by addition of CAMP and its optimum concentration was 10^(-4)M. In the sporulation medium, the sporulation was stimulated by addition of theophylline and its optimum concentration was 10 ㎎/㎖. In the sporulation medium, the sporulation was stimulated by addition of caffeine and its optimum concentration was 300 ㎎/㎖. Theophylline added to the sporulation medium together with CAMP enhanced the promotion effect of cAMP on sporulation. Caffeine added to the sporulation medium together with cAMP enhanced the promotion effect of CAMP on sporulation. In the sporulation medium, the sporulation was stimulated by addition of neither AMP nor ATP. In the potassium acetate medium, cAMP, theophylline and caffeine stimulated the sporulation, respectively.
金鍾協,愼鏞璡 명지대학교 1987 明大論文集 Vol.18 No.-
This paper is studied on the frequency and thickness dependence of permeability of crystallized magnetic materials, 6.5% Si-Fe, 6.5%(Si+Al)- Fe alloys and amorphous, (Fe_(1-x)+Ni_x)_82Si_2B_16 alloys, which is made by rapidly quenched method. As results from the experiments, the value of the permeability is very high(about 10^4), and which is decrease with frequency increasing. And, in the frequency characteristics, the amorphous is more excellent and sensitive than 6.5% Si-Fe alloys.
김종협,남정숙 한국균학회 1984 韓國菌學會誌 Vol.12 No.3
Ribonucleic acid contents and mononucleotides distribution from the mycelium and fruit bodies of Ganoderma lucidum were studied. P.E.I. cellulose TLC and HPLC were applied in this study. The obtained results are as follows; The levels of ribonucleic acids from the young basidiocarp mycelium were higher than those of mature basidiocarp. Guanosine 5'-monophosphate and xanthosine 5'-monophesphate were found in both young basidiocarp mycelium and mature basidiocarp. The levels of guanosine 5`-monophosphate and xanthosine 5'-monophosphate from the young basidiocarp were higher than those of the mature basidiocarp. However, inosine 5'-monophosphate was not detected.