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- 저자 : 백영숙(Young Sook Baek) (검색결과 5 건)
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급성 폐혈증형 돼지단독예에서 분리한 Erysipelothrix rhusiopathiae의 생화학적 특성 및 약제감수성
백영숙,조길재,김봉환,Baek, Young-sook,Cho, Gil-jae,Kim, Bong-hwan 대한수의학회 1990 大韓獸醫學會誌 Vol.30 No.4
The present study was conducted to investigate biochemical properties and antimicrobial drug susceptibilities of 47 strains of E rhusiopathiae isolated from the cases of acute septicemic swine erysipelas in Youngnam and Kyunggi provinces during the period from June 1988 to December 1989. The isolants were identified as E rhusiopathiae on the basis of cellular and colonial morphology, and characteristic reactions in some biochemical tests. All the organisms produced hydrogen sulfide in triple sugar iron agar and showed the characteristic "pipe cleaner" type of growth in gelatin stab cultures. The majority of biochemical and cultural properties of E rhusiopathiae isolated from pigs affected with acute erysipelas were identical to those of the reference strains employed. All the isolates were highly susceptible to penicillin G, ampicillin, erythromycin (MIC:0.025~0.39IU or ${\mu}g/ml$), and moderately susceptible to oleandomycin, oxytetracycline, chloramphenicol(MIC:$0.78{\sim}25{\mu}g/ml$). Kanamycin and sulfadimethoxine showed no activity against the isolates(MIC:>$400{\mu}g/ml$). The MICs of dihydrostreptomycin presented two distribution peaks; of 47 strains, 5(10.6%) were resistant to dihydrostreptomycin (MIC:$400{\mu}g/ml$), while the majority of them were susceptible to the drug.
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급성폐혈증형 돼지단독예에서 분리한 Erysipelothrix rhusiopathiae의 혈청형 및 병원성
백영숙,김봉환,Baek, Young-sook,Kim, Bong-Hwan 대한수의학회 1991 大韓獸醫學會誌 Vol.31 No.1
The serotypes and pathogenicity of 47 isolates of Erysipelothrix rhusiopathiae from pigs with acute septicemic swine erysipelas were investigated. The serotypes were determiend by agar gel precipitation test using autoclave extracted antigens. All of the 47 isolates(42 strains from Youngnam and fi fotrains from Kyunggi province) were serotype lao Five field isolates of Erhusiopathiae serovar la were tested for pathogenicity in mice. All of 5 selected isolates were pathogenic for mice and $LD_{50}$ was $3.7{\times}10^3$ viable cells. Mice immunized subcutaneously with live vaccine did not die after challenge with virulent isolates of E rhusiopathiae.
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김종관,전승수,백영숙,장은경,신선자,Kim, Jong-Kwan,Chun, Seung-Soo,Baek, Young-Sook,Chang, Eun-Kyong,Shin, Sun-Ja 한국석유지질학회 2006 한국석유지질학회지 Vol.12 No.1
Ichnology is the study of traces made by various organisms, which includes classification and description of traces, and interpretation of sedimentary process, behavior of organism and depositional environment based on traces and organism behavior. Ichnofacies, which is defined as the association of several traces related together with substrate characteristics and sedimentary processes, is closely related to depositional environment. Ichnology has been applied to sedimentology (to understand physical characteristics of depositional environment, sedimentation pattern and event bed), sequence stratigraphy (to recognize sequence boundaries and biostratigraphic discontinuities such as MFS, TSE and RSE), oil exploration (providing of many information without big cost) and palaeocology. Preliminary ichnological study on the Ganghwa intertidal flat shows that dominant ichofacies are changing with season and location, suggesting that their seasonal variation would be a good indicator to understand the seasonal change of sedimentary processes, the small- scale change of sedimentary environment and the preservation potential of such units. Ichnology on intertidal flat in western coast of Korea has a great potential to apply its results to petroleum geology as well as sedimentology. 생흔학이란 암석내의 생물들에 의해 만들어진 흔적에 대해 연구하는 학문으로 그들에 대한 설명, 분류 및 해석하는 것을 포함한다. 생흔의 형태, 생물의 행동 및 기질의 특성을 바탕으로 정리된 생흔구조의 조합인 생흔상은 정밀한 퇴적작용과 퇴적환경을 해석하는데 중요한 자료를 제시한다. 생흔학 연구는 퇴적학, 층서학, 석유탐사, 고생물학과 고생태학 등과 같은 퇴적환경학의 전반적인 분야를 연구하는데 다양하게 활용되어져 왔다. 퇴적학 분야에서는 퇴적환경의 물리적인 특성 이해, 퇴적양상에 대한 이해 및 사건층의 인지 등에 직접적인 증거가 될 수 있다. 층서학에서는 순차층서학에서 중요하게 다루어지는 주요 경계면의 인지 및 생층서학적 불연속면의 경계등을 인지하는데 활용된다. 또한 적은 양의 자료로 퇴적환경을 해석하는데에 중요한 정보를 제공함으로서 석유탐사분야에서 비용을 절감하는데 많은 도움이 된다. 이 외에도 화석학적 자료로 사용이 가능하며, 퇴적환경의 고생태를 복원하는 데도 중요한 자료로 활용될 수 있다. 강화도 조간대에서 시범적으로 적용된 생흔상 변화는 조간대의 위치에 따라 상이한 계절변화가 관찰되었다. 생흔상의 조간대의 위치에 따라 상이한 계절변화는 고기퇴적층에서의 계절적 특성, 정밀 퇴적환경, 보존잠재성 등을 파악할 수 있는 좋은 자료가 될 수 있을 것이다. 현생 연안환경에 해당되는 한반도 서해안 조간대에서의 생흔에 대한 연구결과는 퇴적학은 물론 석유지질학에의 활용 가능성이 높은 것으로 판단된다.
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한국 서해안 돌기해삼(Stichopus japonicus)의 서식지 기질 특성
박광재 ( Kwang Jae Park ),류상옥 ( Sang Ock Ryu ),백영숙 ( Young Sook Baek ),김윤설 ( Yeun Seol Kim ),강희웅 ( Hee Woong Kang ),한현섭 ( Hyon Sob Han ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.6
We analyzed surface sediments to explain the substrate characteristics of sea cucumber Stichopus japonicus habitat. The analyses included grain-size determination, water content (WC), loss on ignition (IL), chemical oxygen demand (COD), and acid volatile sulfide (AVS) content. We obtained data on sea cucumber density, weight, and length at each station in a marine farming area in the middle of Korea`s Taean coast on the West (Yellow) Sea in May, 2012. The apparent density of S. japonicus was high in coarse and bimodal sediments, whereas it was low in fine and unimodal sediments. The mass of S. japonicus was greater in fine than in coarse sediments, showing a different trend from sea cucumber density. The values for WC, IL, COD, and AVS in surface sediments were higher in areas with high densities of S. japonicus than in areas with low sea cucumber densities. In particular, the concentration of AVS was much higher than the value proposed in Japanese criteria for areas with high S. japonicus density
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