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우리나라에서 분리한 참다래 궤양병균 Pseudomonas syringae pv. actinidiae 균주들의 Biovar
이영선,김진,김경희,최으뜸,고영진,정재성,Lee, Young Sun,Kim, Jin,Kim, Gyoung Hee,Choi, Eu Ddeum,Koh, Young Jin,Jung, Jae Sung 한국식물병리학회 2017 식물병연구 Vol.23 No.1
Pseudomonas syringae pv. actinidiae는 참다래에 궤양병을 일으키는 원인세균이다. 이 병원균 집단은 분자적 특성에 따라 biovar 1, 2, 3로 나누어진다. 본 연구에서는 1997년부터 우리나라에서 분리되어 순천대학교 생물학과에 보관 중인 P. syringae pv. actinidiae 균주들의 biovar를 기존에 발표된 biovar에 특이적인 PCR primers를 사용하여 동정하였다. 전체 682개 균주 중 biovar 2에 속한 균주가 288개, biovar 3에 속한 균주가 394개였다. 그러나 우리나라에서 분리된 균주 중 biovar 1에 속하는 균주는 없었다. Biovar 3 균주에 의한 궤양병의 갑작스러운 발생과 확산은 이 균주가 빠른 전파력을 가지고 있음을 말해준다. Pseudomonas syringae pv. actinidiae is the causative agent of bacterial canker of kiwifruit. The population of this pathogen is differentiated into three biovars, biovar 1, 2 and 3, according to their molecular characteristics. In this work, we determined biovars of P. syringae pv. actinidiae strains isolated in Korea since 1997 and stored in Department of Biology, Sunchon National University, Suncheon, Korea. The biovars of P. syringae pv. actinidiae strains were determined by PCR using biovar specific primers developed previously. Of 682 strains investigated, 288 strains belonged to biovar 2, while 394 strains were biovar 3. There were no P. syringae pv. actinidiae strains belonging to biovar 1 among the strains isolated in Korea. Sudden outbreak and spreading of bacterial canker caused by biovar 3 strain suggest that this strain has character of rapid transmission.
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李榮善 延世大學校 産業經營硏究所 1984 산업과경영 Vol.6 No.1
이상에서 우리는 산업내분업에 의한 국제적 이론적 근거와 그 이론이 지닌 보호무역주의에 대한 정책적 의미를 살펴보았으며, 실증적으로 태평양연안 국가들 사이에서 산업내무육이 어떻게 이루어지는가를 보았고, 또 산업내무역의 정도를 결정하는 요인이 무엇인가를 살펴 보았다. 이제 여기서는 위해서 얻은 결과를 요약해 보고 그 결과가 주는 정책적 의미를 논하고 앞으로 이 분야에서 계속 연구되어야 할 과제를 정리하기로 한다. 오늘날까지 무역현상을 설명해 오던 헥셔, 오린理論만으로는 오늘날의 국제적 교역을 전부 설명할 수는 없다.
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Closure Domain 法에 의한 Permalloy 磁性 薄膜의 磁璧 Energy 密度
李英善,金正華 울산과학대학 1979 연구논문집 Vol.4 No.2
Permalloy자성박막의 자벽 energy밀도는 이방자장의 함수로서 closure domain방법으로 측정된다. 이 방자장의 변화는 기관의 조건을 달리하는 double layer technique를 이용한다. glass substrate 위에 Aluminum을 100Å∼900Å정도의 두께로 진공증착하고 그 위에다가 다시 균일한 자장하에서 Permalloy (80% Ni - 20% Fe)를 700Å정도의 두께로 진공증착하면, 단일 Permalloy layer보다 큰 보자력 H_c 및 이방자장 Hκ를 나타낸다. Aluminum 두께에 따르는 이방자장 Hκ의 변화는 hysteroscope로 측정 했다. 얻어진 시료를 용이축 방향으로 천천히 감소하는 ac자장 속에 넣어서 소자 시킨 후 closure domain을 Bitter power pattern technique에 의해 현미경으로 관찰 및 사진 촬영했다. 자벽 energy 밀도는 이방자장의 함수로 표시되며 큰 이방자장의 박막에서는 closure domain이 나타나지 않았으며 Kittel^⑴ 와 Kuwahara^⑵의 제안에 따라 용이축 방향에 평행한 180˚자벽만이 나타났다. Aluminum 증착하의 두께가 700Å인 Permalloy막에서 180˚ 자벽 energy 밀도는 2∼3 erg/㎠의 값을 얻었다. Domain wall energy density of permalloy thin film was measured as a function of anisotropic magnetic field by the method of closure domain. To control anisotropic magnetic field, the double layer technique was used. Aluminum was evaporated onto a glass substrate with various thickness (100Å―900Å). Subsequently thin films of Permalloy (80%Ni―20% Fe), 300μ―400μ wide and 700Å thick, were evaporated onto the aluminum thin film under a uniform field of 60 Oe in order to introduce a uniaxial anisotropy. The anisotropy field (Hκ) of such a double layer was found higher than of a single permalloy layer. Closure domains were obtained by slowly decreasing AC field in the easy direction. Bitter powder pattern method was used to observe the domains. The energy density of 180˚ walls between the adjacent main domains were measure to be 2∼3 erg/㎠. The films having higher H_k did not exhibit closure domains but only 180˚ walls parallel to the easy axis, as was also proposed by Kittel^⑴ and Kuwahara^⑵.
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이종갑,이영선 大韓小兒齒科學會 1991 大韓小兒齒科學會誌 Vol.18 No.1
This study was designed to find out the prevalence of dental anomalies.The clinical and roentgenographic examination was undertaken of 2,424 childrens at age from 0 to 15 years and statistical analysis was made. The results were as follows: 1.Among the examined patients,474 patients(19.5%) showed dental anomalies.The prevalences of individual dental anomalies were as follows;congenitally missing teeth 5.8%,supernumerary teeth 8.2% odontoma 0.4%,peg lateralis 1.8%,fused teeth 2.1%,geminated teeth 0.2%,talon cusp 0.2%,dens evaginatus 0.3%,transposed teeth 0.1%,invertedly positioned teeth 0.1%,horizontally positioned teeth 0.1%,natal teeth 0.2%,amelogenesis imperfecta 0.2%. 2.Between the groups with individual dental anomalies,what showed significant correlation was as follows;Between congenitally missing teeth and supernumerary teeth was relatively high negtive correlation.And the correlation coefficencies between male and female showed differences. 3.The sexual differences of the idividual dental anomalies appeared in supernumerary teeth,and talon cusp and dens evaginatus.While supernumerary teeth showed greater rate of prevalence in male(P<0.001),talon cusp and dens evaginatus in female.(P<0.05). 4.In congenitally missing teeth,the mandibular deciduous lateral incisor showed the highest rate of the prevalence in deciduous dentition, while mandibular second premolar in permanent dentition. 5.Most supernumerary teeth were mesiodens of median area in maxilla and showed no statistical difference between right and left side.Generally,the eruption pattern of that teeth was inverted position and unerupted state. 6.In the case with deciduous fused teeth,the prevalence of succeeding permanent congenitally missing teeth 38.6%,while that of succeeding permanent fused teeth was 1.8%.And the highest rate of the prevalence appeared in fusion of mandibular deciduous lateral incisor and canine.
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고주파 가열에 따른 반응고 알루미늄합금의 미세조직 특성
신평우,이정환,이상용,노진호,이영선 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-
Semi-solid forming is relatively new process for forming alloys in the semi-solid condition into near net produce. It relies on the behaviour of semi-solid slurrys in which the solid exists in the form of non-dendritic, spheroidal particles in a liquid matrix. Powder of the Al-20Si-5Fe-2Ni alloy was manufactured by spray forming and powder metallurgy, one of the rapid cooling method, and its microstructure became fine with several ㎛ size through the extrusion process. Spray forming and powder metallurgy are a rapid solidification process in which capable of producing materials consisted of very fine, uniform particles. Spray forming can be described as incorperating the advantages of powder metallurgy without disadvantages of degassing and consolidation. In this paper, the microstructural evolution of the P/M, S/F Al-20Si-5Fe-2Ni alloys and wrought Al 2024 alloys were investigated various heating conditions by high frequency induction heating system.
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