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Pseudaminobacter granuli sp. nov., isolated from granules used in a wastewater treatment plant
한영기,김민석,임완택 한국미생물학회 2017 The journal of microbiology Vol.55 No.8
A Gram negative, aerobic, non-motile and rod-shaped bacterial strain designated as Gr-2T was isolated from granules used in a wastewater treatment plant in Korea, and its taxonomic position was investigated using a polyphasic approach. Strain Gr-2T grew at 18–37°C (optimum temperature, 30°C) and a pH of 6.0–8.0 (optimum pH, 7.0) on R2A agar medium. Based on 16S rRNA gene phylogeny, the novel strain showed a new branch within the genus Pseudaminobacter of the family Phyllobacteriaceae, and formed clusters with Pseudaminobacter defluvii THI 051T (98.9%) and Pseudaminobacter salicylatoxidans BN12T (98.7%). The G+C content of the genomic DNA was 63.6%. The predominant respiratory quinone was ubiquinone-10 (Q-10) and the major fatty acids were cyclo-C19:0 ω8c, C18:1 ω7c, and iso-C17:0. The overall polar lipid patterns of Gr-2T were similar to those determined for the other Pseudaminobacter species. DNA-DNA relatedness values between strain Gr-2T and its closest phylogenetically neighbors were below 18%. Strain Gr-2T could be differentiated genotypically and phenotypically from the recognized species of the genus Pseudaminobacter. The isolate therefore represents a novel species, for which the name Pseudaminobacter granuli sp. nov. is proposed with the type strain Gr-2T (=KACC 18877T =LMG 29567T).
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Vibrio Parahaemolyticus의 溶血性에 關한 硏究
韓永基 中央醫學社 1971 中央醫學 Vol.21 No.6
The hemolysis of Vibrio parahaemolyticus on a specially prepared media is called as Kanagawa phenomenon and considered as an important criterion of enteropathogenicity. The author is interested in the hemolysis of this organism with a special reference to Kanagawa phenomenon, and carried out some experiments with the following results. 1. Most of Kanagawa positive strains was positive in Greig test, and considerable number of Kanagawa negative strains was also positive. The result of Greig test was almost the same between cultures in Brain Heart Infusion Broth and in Modified Wagatsuma Broth. 2. Kanagawa. phenomenon is clearly demonstrated on Modified Wagatsuma Agar than on Brain Heart Infusion Agar, and rabbit red cells were more sensitive to hemolytic factors than goat red cells. 3. Number of strains showing positive Kanagawa phenomenon decreased when the composition of Modified Wagatsuma Agar was further modified. 4. Some test strains showed swarming growth on Modified Wagatsuma Agar with 3% NaCl or without yeast extract. 5. Hemolytic factors were demonstrable in. both culture supernatant and in sediment. 6. Kanagawa positive strains showed some strong lethal activity in inoculated mice into peritoneal cavity as compared with Kanagawa negative strains.
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주요국 비전통적 통화정책의 유효성 평가 -제로금리 시기를 중심으로-
한영기 ( Younggi Han ),이명훈 ( Myung Hoon Yi ) 명지대학교 금융지식연구소 2018 금융지식연구 Vol.16 No.1
본고에서는 글로벌 금융위기 이후 Fed 및 ECB 등 주요국 중앙은행이 실행중인 비전통적 통화정책이 금융시장, 경기, 물가에 미치는 효과를 추정하였다. 분석 데이터는 2009∼2016년중 7개 지역(미국, 유로존, 일본, 영국, 스웨덴, 스위스, 덴마크)의 GDP, CPI, 금융시장 변동성 지수(VIX), 중앙은행 총자산 등의 월별 패널자료이며 추정방법으로는 고정효과(Fixed effects), 패널 VAR 등 다양한 방법을 활용하였다. 분석 결과, 금융위기 이후 비전통적 통화정책 수단인 중앙은행 총자산의 증가는 금융시장 불안의 완화 및 GDP 증가에 유의적인 효과를 미쳤으며, CPI에 대해서도 제한적이나마 대체로 양의 방향으로 영향을 주었다. 반면에 전통적 통화정책 수단인 기준금리를 이용할 경우에는 유의하지 않았다. 한편 비전통적 통화정책은 전통적 통화정책과 비교할 때 상대적으로 CPI에 대한 효과가 GDP에 대한 효과보다 작았는데, 이는 비전통적 통화정책이 주로 총공급곡선이 원점에 대해 볼록한 형태를 갖는 경기침체기에 시행됐기 때문인 것으로 분석된다. 국별로는 미국에서는 그 효과가 상대적으로 컸던 반면 유로존이나 일본에서는 작았는데, 이는 은행차입 외에 시장을 통한 직접금융이 가능할수록 금리경로의 작동 가능성이 증대된 데 기인한다. This paper empirically examines the impacts of central bank’s total asset value on financial markets, economic activity and inflation. This analysis also focuses on seven groups(USA, Euro area, Japan, UK, Sweden, Switzerland, and Denmark) with monthly data covering the period of January 2009 to December 2016, using Fixed effects and Panel VAR methods. The major findings of our paper are follows. First, the increase of quantity aggregates such as central banks’ total asset or monetary base, unlike the basic interest rate, has a significantly positive effect on GDP in addition to reducing risks. The increase in quantity aggregate also affects CPI positively but to a lesser degree. Second, unconventional monetary policy measures have a relatively larger output and smaller price effects than conventional monetary policy. This implies that unconventional monetary policy shocks were implemented over a recession where aggregate supply curve is potentially convex. Third, the macroeconomic effects of unconventional monetary policy had a more significant impact in the US market compared with the market in the Euro area or Japan. Meanwhile, although unconventional monetary policy measures seem to be effective in supporting the economy, major central banks would likely face challenges and risks, such as normalizing the asset size and interest rate.
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공공디자인 관점으로 본 골목길 개선방향을 위한 범죄예방디자인(CPTED) 연구
한영기(Young-Ki Han),정희정(Hee-Jeong Jeong) 한국공공디자인학회 2023 공공디자인연구 Vol.10 No.-
범죄예방디자인을 구축하려는 지자체들의 노력에도 불구하고 특징적인 공간에 대한 차별성을 강화하지 못한다는 한계점이 있다. 본 연구는 유흥가와 인접한 다세대 주거 지역인 안양시 동안구 관양2동의 골목길을 사례·조사하여 특성을 파악하고, 범죄예방디자인이 어떠한 방식으로 적용되는지 분석하여 개선방향을 도출하고자 연구를 수행하게 되었다. 이러한 목적을 위하여 본 연구는 골목길 및 유흥가라는 특징적인 공간의 정의에 대해 명확히 개념을 정립하고 해당 지역의 현황에 대해 현장조사를 실시하였다. 설문조사를 통해 골목길 범죄예방디자인에 대해 시설물 디자인 측면과 경관디자인 측면으로 분류하여 제시한 내용과 자연 감시를 적용한 개선방향에 대해 효과적인 결과를 도출하였다. 유흥가와 인접한 다세대 주택가의 골목길에 대한 범죄 인식 조사와 개선 방향 선호도에 대한 기초설문 문항은 배포 및 취합한 설문 조사지를 통계 프로그램인 SPSS/Win 12.0을 이용해 빈도 분석되었다. 더 나아가 거주자 커뮤니티 활성화 및 주민협의체 결성을 제안하여 자연 감시를 통한 범죄예방디자인의 개선방향을 제시한다. Despite the efforts of local governments to establish CPTED, there is a limitation in that it cannot strengthen the differentiation of characteristic spaces. This study was conducted to identify the characteristics of alleys in Gwanyang 2-dong, Dongan-gu, Anyang-si, a multi-generation residential area adjacent to entertainment districts, and to derive improvement directions by analyzing how CPTED is applied. For this purpose, this study clearly established a concept for the definition of the characteristic space of alleyways and entertainment districts, and conducted an on-site survey on the current status of the area. Through the survey, CPTED in alleyways was classified into facility design and landscape design, and effective results were derived on the improvement direction applying natural monitoring. The basic questionnaire on crime awareness surveys and preferences for improvement directions of multi-family residential areas adjacent to entertainment districts was frequently analyzed using the statistical program SPSS/Win 12.0. Furthermore, it proposes the revitalization of the resident community and the formation of a resident council to suggest the direction of improvement of CPTED through natural monitoring.
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