특이혈청항체 IgG 분획(分劃)이 Streptococcus mutans의 평골면(平滑面) 부착(附着)에 미치는 영향에 관한 연구

김찬수,하윤문,이진용,최유진 대한미생물학회 1982 大韓微生物學會誌 Vol.17 No.1

In order to demonstrate the effect of specific serum IgG antibody on the adherence of Streploco- zcus witarrs to smooth surface and the mechanism of effective adherince inbibition by IgG antibody, in the prepent study authors obtained purified 1'gG from different immunogen preparatiohs of S. mufans KCTC I04.49 (serotype c) and observed the effect of each IgG preparation on the adherence of each,S, virstans strain cultured in different conditions. In additiov, the presen( study was under- taken to observe the cross-reactivity of IgG and the eftect of sucrose concentration on the adherence of S. )eutpns in vitro non-growth conditian. The adherence of S. mutans to glass surface was effective]y inhibitecl by serum IgG antibody. At the same IgG concentrations, anti-2Fo fructose grown/1 N NaC1 washedI S. mutans NCTC lp449 cell showed greater a'dherence inJubitory effect to S. mutans strains .than anti 2Zo sccrose grown- .and anti-S. ruutans NCTC 10449 cell wall, and the greater inhibitory effects of Ig6 preparations were observed ia assay using 2z fructose grown S. mutans celI preparations tban using 0. Ip; uarose grown cell preparations. These results suggest that the more effective adherenee inhibition by serum IgG antibody is due to the reaciion with S. mutans cell surface antigens rather $lt;bpn glucan and celI-associated gIucosyltransferase. The greatest adherence inhibitory effeci. Of IgG to S. mulans strains was observed on homologous NCTC 10449 strain ancl the inhibition crogs-reactivities were observed betweein serotype c, e, and f strains. More pronounced cross-reactivity of adherence mhibition oI IgG to S. mutans vas observed in assay using anti-Zi fructose grown/I N XaCl wasbcd cell than using other IgG preparations, and observed in assay usmg 2.$quot;o fructose grosvn S. mutar:s cell preparations thRA'. 0, I a sucrose grown cef.l preparations. It was ir!terested that low, but adequa$lt;e concentration of reactive Igg antibody significantly increased the adherence ability of S, mgtaggg, This result may be due to the formation of srnall cell aggregates resulfed in a iaereage in tJ:e numbers af organisms whieh adhered to glass surface. The adherence of S. mutans to glass surface was possible in the a$sence of gluean-synthotie activity. Low level of sucrose sigdifkaetl increased the. Adherence ability vf S. mutans to glass surface, but excessive amount of suerose indueed Jarge cell aggr,egates reeulted in a decrease in the,aumbers of orgaaism which adbered.

평창 지역 기상예측에 대한 다중모델 앙상블의 보정

김찬수 건국대학교 기후연구소 2017 기후연구 Vol.12 No.4

In this study, a weighted ensemble method of numerical weather prediction by ensemble models is applied for PyeongChang area. The post-processing method takes into account combination and calibration of forecasts from different numerical models, assigning greater weight to ensemble models that exhibit the better performance. Three different numerical models, including European Center Medium-Range Weather Forecast, Ensemble Prediction System for Global, and Limited Area Ensemble Prediction System, were used to perform the post-processing method. We compared the model outputs from the weighed combination of ensembles with those from the Ensemble Model Output Statistics (EMOS) model for each raw ensemble model. The results showed that the weighted ensemble method can significantly improve the post-processing performance, compared to the raw ensemble method of the numerical models.

하수처리장 방류수를 이용한 역전기투석 발전

김한기 ( Han Ki Kim ),김찬수 ( Chan Soo Kim ),황교식 ( Kyo Sik Hwang ),전강민 ( Kang Min Chon ),한지형 ( Ji Hyung Han ),이서윤 ( Seo Yoon Lee ),홍수철 ( Soo Chul Hong ),정경화 ( Kyung Hwa Jeong ),정남조 ( Nam Jo Jeong ) 한국물환경학회(구 한국수질보전학회) 2015 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2015 No.-

실시간 해칭 렌더링에서 그림자 기법

김찬수(Kim Chan-Soo),김대명(Kim Dae-Myung) 한국콘텐츠학회 2006 한국콘텐츠학회 종합학술대회 논문집 Vol.4 No.2

컴퓨터 그래픽스의 연구는 크게 사실적 렌더링 분야와 비사실적 렌더링 분야로 나눌 수 있다. 사실적 렌더링과 달리 비사실적 렌더링은 만화, 수채화, 해칭과 같은 사람이 손으로 표현한 것 같은 분위기와 특징을 갖는 영상을 표현해 보자는데 그 목적이 있다고 할 수 있다. 본 연구에서는 비사실적 렌더링 기법의 하나인 실시간 해칭 렌더링기법과 사실적 렌더링기법인 그림자 기법을 통합하여 실시간 해칭 렌더링에서 그림자를 생성하기 위한 방법을 모색하였다. 그림자 기법에는 투영 텍스쳐 그림자 기법을 이용한 그림자 기법을 해칭 렌더링에 적용하여 해칭 렌더링에서 실시간 해칭 그림자를 생성하기 위한 기법을 제시한다. The research of computer graphics is divided into two parts of photorealistic rendering and non-photorealistic rendering. The purpose of non-photo realistic rendering is to make image like cartoon, water-color, hatching etc. In this paper, we study for real-time hatching rendering and shadow techniques and we combine two techniques to make real-time hatching shadow. In shadow techniques we apply projected texture shadow to hatching rendering. Eventually, we introduce natural real-time hatching shadow through comparison and analysis.

제주도 자연생태계 관리를 위한 외래 침입식물의 등급체계

김찬수,고정군,강영제,문명옥,임은영,김홍림 한국임학회 2006 한국임학회 정기학술발표논문집 Vol.2006 No.-

해저매몰체 탐지를 위한 Chirp SBP의 주파수에 따른 해상도 비교

김찬수(Chan-Su Kim),김현도(Hyun-Do Kim),김진후(Jin-Hoo Kim) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-

해저면 하부에 매몰된 해저 케이블을 탐지하기 위해서 고주파 탄성파 탐사를 실시하였다. 2-7 ㎑ Chirp SBP와 10-20 ㎑ Chirp SBP로 탄성파 탐사 자료를 획득하여 주파수에 따른 해상도를 비교해 보았다. 2-7 ㎑ SBP의 자료에서 케이블 매설을 위한 트렌치와 매설 케이블의 반사신호가 서로 교란된 형태의 쌍곡선 기록이 나타나 케이블의 정확한 매몰위치를 파악하기 어려웠으나, 10-20 ㎑ SBP의 자료에서는 각 반사면을 구분할 수 있는 해상도에 해당하여 확연히 구분된 쌍곡선 형태를 보임으로서 매설된 해저 케이블의 매설심도를 정확히 확인할 수 있었다.

우주용 원자로 열전도관 기술 개발

김찬수(Chan Soo Kim),박병하(Byung Ha Park),홍성덕(Sung Deok Hong) 한국항공우주학회 2021 한국항공우주학회 학술발표회 논문집 Vol.2021 No.7

기후변화에 따른 북극항로권 지역에서의 교통 활동 변화 해석 및 예측 방법에 대하여

김찬수(Chansoo Kim),이승호(Seungho Lee) 건국대학교 기후연구소 2018 기후연구 Vol.13 No.2

The safety of the future mankind becomes a world issue due to the climate change driven by global warming. It is inevitable to observe everywhere in daily life the impact of climate change. The level of emergency differs between long-term, mid-term, and short-term, which depends on situation. The impact of climate change in daily life is fairly diverse, and therefore multiple research units of different backgrounds often work together on the measuring and forecasting of the impacts. This paper aims to study the potentially useful methods to analyze and forecast the impact on the changes in transport activities of Canadian Inuit. This is part of the research on the climate change’s impact on the Northern Sea Route area. Either natural or man-made change of external environment forces human to adjust their daily life in order to maintain their utility level of life. Individual or individuals’ group react to the external impact, the way of which differ from others. This fact calls a simulation research on the whole set of input-intermediate process-output. Agents representing individuals or certain subpopulation are given a set of rules to react to stimulus and interact with other agents behave in the realm of simulation. This paper provides methodological discussions on how analyzing and forecasting future change in transport activities in response to climate change. The discussion goes around activity-based approaches that are recently popular in urban planning and transportation planning among available simulation approaches. This paper then discusses the implication and future research agenda.

제주도 범섬의 식물상

김찬수(Chan-Soo Kim),송관필(Gwan-Pil Song),문명옥(Myong-Ok Moon),송국만(Kuk-Man Song),김진(Jin Kim),이은주(Eun-Ju Lee) 한국자원식물학회 2005 한국자원식물학회지 Vol.18 No.2

본 조사는 식물상을 밝힘으로서 체계적이고 효율적인 보존관리대책을 마련하데 필요한 정보를 제공하고 우리나라 최남단에 속하는 도서에 있어서 식물자원의 분포특성을 파악하고자 수행하였다. 관속식물은 65과 140속 162종 2변종으로 총 164분류군이었는데 그 중 양치식물은 6과 13속 15종, 나자식물은 1과 1속 1종, 피자식물에 있어서는 쌍자엽식물이 49과 97속 114종 1변종으로 115분류군, 단자엽식물은 10과 29속 32종 1변종으로 33분류군이 출현하여 계 59과 126속 146종 2변종으로 계 148종이었다. 미기록 종은 양치식물 중 점고사리, 쇠고비, 큰족제비고사리, 사다리고사리 등 4종, 단자엽식물 중 강아지풀, 줄, 송이고랭이, 꽃토란, 개구리밥, 부채마 등 6종, 쌍자엽식물 중 큰사방오리, 개모시풀, 애기싱아, 미국자리공, 갯장구채, 새머루, 누리장나무, 보리장나무. 진득찰 등 9종 총 16과 19속 19종이었다. 희귀식물로서는 국내 거문도와 제주도에만 분포하는 것으로 알려진 박달목서가 자생하고 있으며, 바위연꽃의 자생지도 확인되었다. 또한 귀화식물은 총 20과 33속 34종 1변종으로 총 35분류군이었다. This study was conducted to prepare systematic and efficient measures for nature conservation and management in Beomseom Island, and to clarify characteristics of distribution of plant resources in southernmost islands of Korean peninsula. The numbers of vascular plants were summarized as 164 taxa included 6 families, 13 genera, and 15 species in pteridophyta, 1 family, 1 genus, and 1 species in coniferophyta, and 59 families, 126 genera, 146 species, and 2 varieties in endospermae composed of 49 families, 97 genera, 114 species, and 1 variety in dicotyledonae and 10 families, 29 genera, 32 species, and 1 variety monocotyledonae. Unrecorded taxa of the flora of Beomseom Island were 19 taxa included 4 taxa of pteridophyta, i.e. Hypolepis punctata, Cyrtomium fortunei, Dryopteris pacifica, and Thelypteris granduligera, 6 taxa of monocotyledonae, i.e. Setaria viridis, Zizania latifolia, Scirpus triangulatus, Zantedeschia aethiopica, Spirodela polyrhiza, and Dioscorea nipponica, and 9 taxa of dicotyledonae, i.e. Alnus firma, Boehmeria Platanifolia, Aconogonum ajanense, Phytolacca americana, Melandryum oldhamianum var. roseum, Vitis flexuosa, Clerodendron trichotomum, Elaeagnus glabra, and Siegesbeckia glabrescens. The two rare species, Osmanthus insularis that distributed only Jeju-do and Geomoondo Island and Orostachys iwarenge that distributed only southern parts of Jeju-do in Korea were investigated. The numbers of naturalized plants were 20 families, 33 genera, 34 species, and 1 variety.

Vascular Plant Diversity of Jeju Island, Korea

김찬수 한국자원식물학회 2009 한국자원식물학회지 Vol.22 No.6

The vascular plants in Jeju composed of 21 families 62 genera, 190 species, 7 varieties with 197 taxa in Pteridophyta, 3 families 5 genera, 7 species, 3 forma with 10 taxa in gymnosperm (Coniferophyta) and 143 families 703 genera, 1,622 species, 114 varieties and 47 forma with 1,783 taxa in Endospermae. The total number of taxa was 1,990 consisting 167 families, 770 genera, 1,818 species, 121 varieties and 50 forma. Three families, 4 genera 4 species and 1 variety in Pteridophyta and 1 family, 1 genus I species, 1 forma of Coniferophyta were endemic to Jeju. Five families, 8 genera and 8 species in the Monocotyledonae of Endospermae and 23 families, 32 genera, 21 species, 16 varieties and 7 forma and 44 taxa in Cholipetalae, and 9 families, 24 genera, 12 species, 13 varieties and 7 forma, total 32 taxa in Sympetalae were endemic to Jeju. Total 90 taxa with 41 families, 69 genera, 46 species, 29 varieties and 15 forma were drawn up as endemic plants in Jeju. As the numbers show on, Jeju has more biodiversity especially plant diversity than any other places in Korea. It was an important region in regard to geographical position. The rarity on plants from Jeju has been assessed based on the IUCN red list categories and criteria at both regional and global levels. There was one species in each extinct (EX) and extinct in the Wild (EW). The EX and EW species were Rhododendron saisiuense Nakai (Ericaceae) and Asplenium antiquum Makino (Aspleniaceae), respectively. Three taxa, Rhododendron dauricum L. (Ericaceae), Lycopodium sieboldii Miq., and Lycopodiella cernua (L.) Serm (Lycopodiaceae) were species that is extinct in the region (RE). Sixty-one taxa were critically endangered (CR), 13 were endangered (EN), and 83 were vulnerable (VU) at regional level. The taxa listed on a Red List corresponds 26.9% of total taxa in Jeju. At global level, there were 19 taxa in CR, 4 in EN, and 1 in VU (Vulnerable) as the category of threat. The rest taxa (133 taxa) were classified as Least Concern (LC). According to the results of the assessment, conservation measures must be taken for total of 157 species that were categorized in threaten including one of EX, one of EW and three extinct in the region immediately. Of 157 species, 61 were CR, 13 are EN and 83 were VU.