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신현동 高麗大學校自然資源科學硏究所 1997 自然資源科學硏究 Vol.5 No.-
This paper presents a list of the powdery mildew fungi and their respective host plants recorded up to date in Korea. Powdery mildew fungi belong to 13 genera and 110 species. The host plants species count 338 dispersed in 63 families, which comprises about 11.7% of angiosperms in Korea. Most of the plants were infected with one species of powdery midew fungus, but 24 plant species with two or three different midews. The flora of powdery mildew fungi is far from complete and additional investigation is necessary.
신현동 대한기계학회 1983 대한기계학회논문집 Vol.7 No.3
The turbulent hydrogen-air diffussion flame was studied experimentally and theoretically. Laser Doppler anemometer was used to measure the velocity field in the flame. Two mathematical models for the combustion reaction term, which are infinite rate model and finite rate to be derived eddy break-up model, were tested by comparing predictions with experimental data for coaxial turbulent diffusion flame. The agreement between the predictions and the data is, on the whole, very good in the case of employing the finite rate model rather than the infinite rate model. But, it was shown that the finite rate model was practically applicable to the predictions of the turbulent diffussion flame structure.
Impossibility of Seed Transmission In Plant Mycoplasmal Diseases
신현동,Shin Hyeon-Dong Korean Society of Applied Entomology 1980 한국식물보호학회지 Vol.19 No.3
마이코플라스마유사미생물이 식물에서 병원체로 확인되기 이전에는 이른바 유관속침해바이러스병과 매미충류에 의해 매개전염되는 바이러스병들은 대부분 혹은 전부 종자전염이 안된다는 것이 통론으로 되어왔다. 그러나 이들 범주의 식물병들은 대부분 마이코플라스마유사미생물에 의한 것으로 밝혀지고 있다. 현재까지 마이코플라스마유사미생물의 종자전염이 확인된 예는 없으며 또한 종자전염의 가부를 논한 보고도 없다. 본 고는 몇 가지 증거를 제시하면서 마이코플스마유사미생물의 종자전염불가능성을 주장한다. 첫째, 대부분의 식물마이코플라스마병은 엽화현상, 불임, 급격한 고사 등을 일으켜서 종자형성이 아니된다. 둘째, 배아 및 화분립은 유관속과 격리되어 형성된다. 첫째, 마이코플라스마는 배유나 종피 등에서 내부${\cdot}$외부감염체로서 그 생명력을 유지할 수 없다. 넷째, 마이코플라스마는 휴면태를 갖지않는다. Seed transmission in plant mycoplasmal diseases has never been reported. Some evidences supporting impossibility of seed transmission in plant mycoplasmal diseases are discussed.
밀폐공간에서 가스폭발에 의한 개구발생 후의 압력변화에 대한 해석
신현동,윤재건,조한창 한국산업안전학회 1999 한국안전학회지 Vol.14 No.3
A numerical study on gaseous explosion was carried out to predict the transient pressure behavior with the partial rupture in confined vessels. Equations, assumptions and solutions for central ignition of premixed gases in closed spherical vessels are proposed with various equivalence ratios of gas fuel, as CH₄ and C₃H_8, vent areas and vent opening pressures. Given vent opening pressure in a vessel, the magnitude of second peak pressure results from the vent areas and burning velocity, varied by equivalence ratio of gas fuel. In a living room of an apartment, the higher second peak pressure than the vent pressure is not appeared due to its large window areas. As vent opening pressure is higher, the larger damage by gaseous explosion is expected and the larger vent area is necessary for relieving the damage. In the same concentration, the gaseous explosion by propane rather than methane shows the larger damage due to its higher adiabatic flame temperature and equivalence ratio.
한국산 Cercospora 및 관련 속의 분류학적 연구 (8)
신현동,김정동 한국균학회 1999 韓國菌學會誌 Vol.27 No.2
This paper is the eighth contribution towards taxonomic studies on Cercospora and allied genera, and contains ten species of Korean cercosporoid fungi; viz., Cercospora brassicicola, C. flagellaris, C. sesami, C. zinniae, Passalora amurensis, Pseudocercospora balsaminae, P. humuli, P. puderi, P. salicina, and Stenella dianthi. Morphological characteristics of taxonomic value are described and illustrated for these species to contribute towards a mycological monograph of Korean cercosporoid fungi.