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Cu²-Faujasite형 제올라이트의 열적 안정성에 대한 시차열 분석
金明哲 慶一大學校 1995 論文集 Vol.11 No.1
The themochemical stability of ?? -Faujasite was studied by differential thermal analysis(DTA), thermal gravitational analysis(TGA), and X-ray diffraction(XRD) analysis. Dehydration of ?? -Faujasite on DT/TGA were observed at 330-960K(X type), and 330-650K(Y type). A structural change of framework in Faujasite also observed on XRD spectrum. It showed that thermal stability of Faujasite was directly related to the Si/Al ratio of framework. Since many kinds of dehydration decreased in weight of Faujasite, % loss of X type and Y type were 32.3 and 25.6, respectively.
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김명철,박관호 충남대학교 수의과대학 동물의과학연구소 1994 動物醫科學硏究誌 Vol.2 No.-
A 14 months old male Korean native cattle which shows clinical signs of urolith with loss of appetite, dribbling of urine, depression and abdominal swelling, was referred. Acupuncture treatment carried out to cure urolith. Calculus in urinary bladder was not cured radically. But calculus in urethra was cured effectively.
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창조성의 사회적 환경: 한국 현대 소설과 회화 영역에 대한 역사측정학 연구
김명철,민경환 한국사회및성격심리학회 2013 한국심리학회지 사회 및 성격 Vol.27 No.4
본 연구는 역사측정학 방법을 활용하여 한국 현대 소설과 회화 분야의 영역 특성을 밝히고 각 분야의 창조적 명성에 영향을 미치는 발달기 및 성인기의 사회적 환경 요소를 탐구하였다. 먼저 연구 1에서는 두 영역의 경력 표지점을 비교하여 한국 현대 소설 영역이 한국 현대 회화 영역에 비해 새로운 생각과 연합의 빠른 산출과 빠른 산물화가 더 두드러지는 분야임을 밝혀내고 두 영역의 역사적 특성을 바탕으로 이를 설명하였다. 연구 2에서는 연구 1에서 발견한 두 영역의 차이를 바탕으로 출생 순서, 부모 여읨, 어린 시절의 외상적 경험 등 발달기의 사회적 요인과 경쟁, 멘토, 다분야 활동 등 성인기 환경이 창조자의 생애 명성에 미치는 효과를 살펴보았다. 그 결과 어린 시절의 외상적 경험의 영역 일반적인 긍정적 효과와 다분야 활동의 영역 특정적 긍정적 효과, 멘토 수의 영역 특정적 부정적 효과를 확인하였다. 논의를 통해 이러한 결과를 종합하고 그 함의를 논하였다. Using historiometric method, this article analyzed the characteristics of the two creative domains of Korean modern novel writing and modern painting, and explored the socio-developmental conditions that yielded creative outputs in each domain. In study 1, the career landmarks of those two domains were compared and it was discovered that Korean modern novel writing required faster ideation than painting and also its ideation-output ratio was higher than painting. We explained this result in the historical contexts of the two domains. Based on these domain characteristics, in study 2 we tested the effects of social factors in developmental period such as birth order, parental loss and traumatic experience, and the effects of factors in active period such as competition, mentors and versatility to the creators' lifetime eminence. There were domain-general positive effect of traumatic experience in developmental period, domain-specific effect of versatility, and domain-specific negative effect of number of mentors. Finally, we discussed the implications of this study.
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백서 적혈구에서 glutathione이 paraquat 독성에 미치는 영향
김명철,박재윤,채기영,천영욱,박평심,차종희 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2
The participation of superoxide in initiating tissue damage from administration of a xenobiotics is best illustrated by paraquat intoxication, in which it is known that one electron reduction of paraquat leads to the formation of radicals which react with molecular oxygen to give superoxide. In the present study, the effects of paraquat on the level of glutathione and activities of superoxide dismutase(SOD), catalase, glutathione peroxidase, glutathione reductase and glutathione stransferase were investigated in rat liver and erythrocytes. The contents of glutathione in liver and blood were sinificantly decreased by paraquat administration, but the activities of enzymes were unaltered. Incubation of the buffered aerobic mixture of erythrocyte in the presence of 5mM glucose, Paraquat and/or N-ethylmaleimide(NEM) resulted in the formation of lipid peroxide, the activities of various enzyme and the levels of glutathione were determined. The malondialdehyde(MDA) contents as a indicator of lipid peroxidation was decreased and the levels of total glutathione were not changed but the levels of oxidized glutathione(GSSG) were in creased in paraquat treated erythrocytes. The activites of ezyme were decreased in paraquat treated erythrocytes but in reduced glutathione(GSH) treated erythrocyte, the enzymes activities were less decreased by paraquat. These results suggest that paraquat toxicity was probably somewhat reduced by GSH, but paraquat-induced injury were not increased by GSH depletion in erythrocytes.
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김명철,강두기,정광석,김동균,신현석,주기재 한국생태학회 2009 Journal of Ecology and Environment Vol.32 No.4
This study describes time lag responses between hydrological variables and phytoplankton biomass in a regulated river system, the lower Nakdong River in South Korea. The lower Nakdong is a typical flow-controlled lotic system, and its limnological characteristics are influenced by climatic variation such as monsoons and summer typhoons. Mean rainfall in the area during summer is about 1,200 mm, which comprises >60% of annual rainfall. Our results show that the regulation of flow in the Nakdong by multi-purpose dams from 1995 to 2004 affected phytoplankton dynamics. Diatom blooms occurred in winter, when the limited discharge allowed for proliferation of the phytoplankton community. Using multiple regression analysis, we detected significant time-delayed relationships between hydrological variables and phytoplankton biomass. These results may be useful for water resource managers, and suggest that ‘smart flow’ control would improve water quality in large regulated river systems of the Republic of Korea.
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