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이민웅,최혜정 한국균학회 1982 韓國菌學會誌 Vol.10 No.3
The characteristics of the six different agricultural soil from Michigan were as follows. Colwood and Capac soil were loam, Gilford and Ceresco were sandy clay loam, Sission was clay loam, and Spinks was sandy loam. pH of Gilford sandy clay loam was 6. G whereas that of the soil ranged 5.4∼5.9. Gilford sandy loam found to contain a relatively higher amount of organic matters as compared to other soils. Furthermore, the numbers of bacteria in Gilford sandy clay loam were significantly higher than those in other soils. The populations of fungi in Gilford sandy clay loam and Colwood loam soils were significantly greuter than those in other soils. On the other hand, the densities of actinomycetes in Gilford sandy clay loam and Ceresco sandy clay loam soils were significantly different from those in other oils. The population of anaerobic bacteria varied depending on the soils; Ceresco sandy clay loam, Capae loam, Colwood loam soils have higher numbers of bacteria, whereas Gilford sandy clay loam was very lesser than the other soils. In the ^(14)C-glucose respiration by soil microorganums after 10 hrs, the respiration rate was decreasing in the order of Ceresco sandy clay lam, Spinks sandy loam, Colwood loam, Sission clay loarn, Capac loam and Gilford sandy clay loam. Germination of test propagules on natural soil soil was 0∼5%, and it was germinated 90∼98% on autoclaved soil and PDA. The propagules differed in thier germination response to nutrients added to the soils. In general, more nutrients were required to promote germination on Capac loam and Gilford sandy loam soil than Spinks sandy loam soil. Especially Mortierella n. sp. required more nutrients for germination to obtain the same ratio as Helminthosporium victoriae.
李敏雄 동국대학교 대학원 1972 大學院硏究論集-東國大學校 大學院 Vol.2 No.-
The aim of this investigation was to elucidate the relationship between the change of soil depth under the infected plot of soil with root rot of ginseng and healthy plot of soil. 1. Difference of bacterial number between infected plot and healthy plot in genseng cultivation was statistically significant different at one percent level. 2. Difference of gram negative bacterial number betwen the two different plot of ginseng cultivation was statistically significant at one percent level. 3. The more bacterial number increased, the more gram negative bacterial number was present in each plot of soil. 4. The distribution of bacterial and gram negative bacterial population was higher in both 5-10 level soil depth. However, the number of both soil microorganisms decrease with the depth in each soil.
人蔘根腐病에 關한 硏究(Ⅴ) : pisi의 營養要求性에 關하여 Fusarium solani f, sp.
李敏雄 동국대학교 대학원 1974 大學院硏究論集-東國大學校 大學院 Vol.4 No.-
This paper describes the results of studies on the physiological and nutritional characters of Fusarium solan f. sp. pisi in artificial culture. The experimental results obtained may be summarized as follows. 1. In the effects optimum hydrogen Ion concentration on the growth of this fungus in Waksman liquid medium was 6.5-7.0. 2. In the effects of carbon sources glycerin, mannit maltose, and fructose showed the best results, but organic acid was not effective as nutritional elements except for succinic acid. 3. Calcium nitrate as an inorganic nitrogen source showed good effective on the growth of this fungus, and followed potassium nitrate and sodium nitrate. NH₄-nitrogen decreased the growth of this fungus. 4. Aspartic acid, leucine, and glutamic acid proved effective significantly on the growth of the fungus, whereas cystine and lysine was ineffective. 5. As for the effect of heavy metal element sources on the growth of fungus, an optimum mol concentration of zinc sulfate, sodium molybdate, manganese sulfate, and Jerric chloride were different in each mol concentration:zinc sulfate was 1/1000 mol, sodium molybdate 1/100.000mol, manganese sulfate 1/2.000 mol, and ferric chloride also 1/1˙000 mol. All control of metal element in each medium was not effective on the growth of fungus. 6. As for effect of inorganic nutritional element on the growth of the fungus, the optimum concentration (%) of the magnesium sulfate was 0.05, potassium phosphate monobasic 0.075, potassuim phosphate dibasic 0.1, and also calcium chloride 0.025. All control of the inorganic nutritional elements have showed unfavorable effects.
이민웅 순천향대학교 이순신연구소 2004 이순신연구논총 Vol.- No.2
壬辰倭亂은 16세기말의 8년에 걸친 긴 전란이었다. 그러나 실질적인 전투 행위가 계속된 것은 초기 약 1년여와 정유재란 시기의 1년 반 정도뿐이었다. 나머지 중간의 4년여는 일종의 휴전 상태였고, 전쟁을 평화적으로 매듭짓기 위한 講和交涉이 진행된 시기였다. 이에 대한 연구는 처음에 일본 측에서 20세기 초반 이래 명나라와의 강화교섭 과정을 중심으로 진행되었고, 최근에는 우리 학계에서도 정치사적‧외교사적 관점에서 접근한 연구 성과들이 나오고 있다. 하지만 전쟁사의 관점에서 본 강화교섭에 대한 연구 성과는 거의 없는 실정이다. 이 글에서는 먼저 강화교섭의 배경에 대해 전쟁사적 관점에서 살펴보려고 한다. 朝‧明‧日 삼국이 처한 전쟁 상황 자체와 그러한 전황에 이르게 된 사회경제적 배경에 대해 각국별로 정리한다면 강화교섭이 진행된 배경을 이해할 수 있을 것으로 생각한다. 또한 휴전상태에서 진행된 교섭의 전개과정도 간략히 정리하려 한다. 이 시기 사회경제적 배경의 하나는 전염병의 창궐을 들 수 있다. 이와 관련해서 그 발생 배경과 진행 과정, 그리고 조선 수군에 과연 어느 정도의 타격을 끼쳤는지에 대해 관련 사료를 통해 살펴보기로 한다. 끝으로 역경에 처했던 강화교섭기간 동안 이순신이 어떤 방법으로 수군을 재정비했는지에 대해서도 몇 가지 조목 별로 나누어 정리해 보려고 한다. 그동안 이순신에 대한 연구는 그의 영웅적인 면만을 강조하는 경향이 있었던 것이 사실이다. 그가 왜 위대한 인물인지, 그리고 어떻게 전쟁을 준비했는지 등에 대한 역사적 사실을 파악하는 기본적인 접근이 부족했다고 생각한다. 때문에 이 글은 이러한 문제의식을 갖고 그간 잘 알려지지 않았던 강화교섭기의 조선 수군이 처한 상황과 이순신의 수군 재정비를 위한 행적을 밝혀보는 것을 목적으로 삼았다.