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NiO를 첨가한 WO<sub>3</sub> 박막의 미세 구조 거동
김광호,나동명,최광표,박진성,Kim Gwang-Ho,Na Dong-Myong,Choi Gwang-Pyo,Park Jin-Seong 한국재료학회 2005 한국재료학회지 Vol.15 No.7
Thin films of tungsten oxide and nickel oxide were deposited on $Al_2O_3/Si-substrate$ by high vacuum thermal evaporation. The properties of microstructure and crystallinity were analyzed by SEM and XRD respectively. $WO_3$ films without addition of NiO showed polycrystalline structure after annealing at $500^{\circ}C$ for SO min. There were the cracks between the polycrystalline grains and the crack width was increased with the thickness of $WO_3$ films. The cracks in the $WO_3$ films could be controlled by an optimum deposition of NiO on $WO_3$ films and either less or more than the optimum addition fails to suppress the cracks. A process mechanism to suppress the crack has been discussed.
김광호 한국경제교육학회 2023 경제교육연구 Vol.30 No.2
This study points out that the usual analysis of welfare losses under price ceilings in textbooks is based on the assumption that consumers with the highest willingness to pay receive the good, and suggests ways to improve it. We also identify upper and lower bounds for the welfare loss caused by excess demand under price ceilings, and analyze the average welfare loss when goods are allocated by lottery. Finally, we set up the excess demand situation as a game situation to find the Nash equilibrium and derive its welfare implication. 본 연구는 가격상한제에 따른 후생손실에 대한 교과서의 통상적 분석이 ‘가격상한제 시행으로 초과수요가 발생하면 지불용의금액이 큰 소비자들이 재화를 받는다.’라는 가정에 기반한 것임을 지적하고 개선방안을 제시한다. 또한 가격상한제에 따른 초과수요로 인해 발생하는 후생손실의 상한과 하한을 밝히고, 추첨에 의해 재화를 배분할 경우의 평균적 후생손실을 도출한다. 끝으로 초과수요 상황을 게임상황으로 설정하여 균형을 찾고 후생적 측면에서 함의를 도출한다.
수도 품종의 잎집무늬마름병 저항성연구 I. 잎집무늬마름병 저항성검정을 위한 균주선발
김광호,양계진,Kwang-Ho Kim 한국작물학회 1987 한국작물학회지 Vol.32 No.1
Fifty eight isolates of R. solani collected from rice plants infected to sheath blight disease at seven different locations through the country were evaluated for their cultural characteristics on media. Degree of resistance of nine rice varieties were tested by the seven isolates representing each culture type from the grouped pathogene-city. Great variation of cultural characterisics on PSA media was observed among isolates, and 58 isolates tested were grouped into 7 culture types. Locational distribution of isolates belong to each culture type was different between types, and only isolate type 'Ia' was distributed in all locations collected. The degree of pathogene-city of each isolate to rice adult plant was different between 7 culture types grouped, and no isolates infected severely on all tester rice varieties. The degree of resistance to the disease showed great variation among 9 tester varieties, and varietal reaction to the disease was varied along with isolates inoculated. An isolate, la, shown strong pathogenecity and distributed through 7 locations was selected for the screening of varietal resistance to rice sheath blight disease. 벼 품종의 잎집무늬마름병 저항성검정에 사용할 R. solani 균주를 선발할 목적으로 전국 7개지역에서 수집한 58개균주의 배양특성을 조사하여 균주의 배양형을 나누고 각 배양형에서 대표되는 균주를 선정, 9개 벼 품종에 접종시켜 균주의 병원성과 품종저항성을 조사한 결과를 요약하면 다음과 같다. 1. 벼 잎집무늬 마름병균의 균주를 PSA 배지상에서 기르면서 조사한 5종류의 배양특성은 균주간에 뚜렷한 차이가 있었으며 균주별 배양특성에 근거하여 공시한 58개 균주를 7종의 배양형으로 나눌 수 있었다. 2. 각 배양형에 속하는 잎집무늬마름병균 균주의 지역적인 분포는 차이가 있어서 균주분포의 지역특이성이 인정되었으며 Ia 배양형에 속하는 균주만이 7개 지역 모두에 분포되어 있었다. 3. 각 배양형을 대표하는 7개 균주의 병원성은 서로 달랐으며 균주별 병원성은 검정품종에 따라서 그 정도가 다르게 나타났다. 4. 균주의 병원성검정에 사용되었던 9개 벼 품종의 저항성정도도 품종간 차이가 켰으며 품종의 저항성 반응도 접종한 균주에 따라서 달리 나타나는 경우가 있었다. 5. 공시한 균주의 병원성정도와 지역적인 분포범위를 고려하여 벼 잎집무늬마름병 저항성검정에 사용할 균주를 선발할 수 있었다.
金光鎬,鄭允惠 건국대학교 농업자원개발연구소 2000 農資源開發論集 Vol.22 No.-
Segregation mode of leaf aroma in F2 and F3 were studied in ten crosses between the three scented rices and five non-scented rice varieties. Three crosses among ten showed the segregation ratio of 1 scented : 3 non-scented plants in F2, two crosses indicated 3 : 13, and four cross fitted to both 1 : 3 and 3 : 13. Segregation ratio of F3 populations of Ilpumbyeo/Hyangmi and Jinbuchalbyeo/Hyangmi indicated that aroma of Hyangmi was not controlled by the single recessive gene, but a few recessive genes. The aroma and heading date in F2 of seven crosses did not segregate independently. The frequency of scented plants was lower in delayed heading plants than that of earlier heading plants.