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Occurrence of Northern Cereal Mosaic Virus in Korea
이순형,Lee Soon Hyung,Shikata Eishiro Korean Society of Applied Entomology 1977 한국식물보호학회지 Vol.16 No.2
1963년부터 중부지방에 큰 피해를 주고 있는 맥류의 바이러스병을 동정하기 위하여 전자현미경에 의한 바이러스입자 관찰과 매개충을 이용한 전염시험 및 기주범위조사를 한 결과 정상입자의 평균 크기는 길이가 300-370nm였고 폭이 57-60nm였다. 매개충은 애멸구 Laodelphax striatellus(Fallen)로서 충체내 잠복기간은 7-19일이였고 대부분 10일간이었다. Host range는 보리, 옥수수, 밀, Rye맥, 구리 등으로 옥수수외의 기주식물들은 포장에서도 발병이 되고 있다. 그러므로 중부지방에서 발생되고 있는 맥류 바이러스병은 대부분이 북지모자익바이러스병으로 매년 $10\%$내외의 감염율을 보여주고 있으며 춘파맥에서는$100\%$ 감염 될 때도 있다. A barley virus disease has been severe in central Korea since 1963. To investigate the causal virus, examination of host ranges, transmission by insect vectors and · electron microscopy were conducted. In electron microscopy, particles identical with northern cereal mosaic virus were observed. The size of baciliform particles ranged from 300nm to 370nm in length and 57-60nm in diameter. The virus was transmitted by the small brown planthopper Laodelphax striatellus (Fallen). The latent period in the vector was seven to nineteen days, with 10 days the most prevalent. Barley, corn, wheat, rye, and oats were susceptible to the virus when inoculated by the insect vectors. It was concluded that the disease agent of the barley disease in Korea is northern cereal mosaic virus. This is the first known report of this disease in Korea.
Purification and Serology of Potato Virus S
이순형,이기운,정봉조,Lee Soon Hyung,Lee Key Woon,Chung Bong Jo Korean Society of Applied Entomology 1977 한국식물보호학회지 Vol.16 No.3
감자바이러스 S(PVS)의 진단, 동정 및 씨감자의 검정에 이용할 항혈청을 만들기 위하여 이병주로부터 PVS를 순수분리 순화하여 항혈청을 제조하였다. PVS는 지표식물파 전자 현미경으로 순수 분리하여 Nicotiana debneyii에서 증식하여 순화하였다. 순화된 PVS의 순화도는 1.18mg/ml이었으며 이것을 1.5ml씩 7일 간격으로 5회 .토끼에 주사하였으며 마지막 주사후 10일에 채혈하여 항혈청을 분리하였다. 제조된 PVS항혈청의 역가는 미량침강법에 의하여 1/2048로 나타났다. he study was conducted to produce an antiserum of potato virus S for identification and screening of seed-potatoes. Potato virus S was isolated from infected plants and identified by means of indicator plants and electro microscopy. Isolated potato virus S was multiplied in Nicotiana deebneyii and the virus was purified by a modified method that was developed through this study. The purity of potato virus S was 1.18mg/ml. Purified potato virus S was injected into rabbit intravenously once a week for 5 weeks. Antiserum was collected 10 days after the last injection. The produced antiserum was determined to have a titer of, 1/2048 by means of microprecipitin tests.
이순형(Soon Hyung Yi),이소은(So Eun Lee) 한국아동학회 1997 아동학회지 Vol.18 No.2
The purpose of this study was to investigate children`s abilities of self-control and visual information processing based on their experience with video games. Participants, divided by prior exposure to video games, were 44 seven-year-old and 48 eleven-year-old boys. The impulsive tendency of children was measured through the MFFT and The delayed satisfaction test. Visual information processing ability was assessed through perceptual speed, mental rotation, and spatial visualization tasks. No differences were found between more-and less-video-game-experienced boys. Significant differences, however, were found in visual information processing abilities. More experienced boys performed better in mental rotation and spatial visualization tasks than less experienced boys.
이순형(Soon Hyung Yi),이강이(Kang Yi Lee) 한국아동학회 1992 아동학회지 Vol.13 No.1
The purpose of this study was to investigate child care activities in day care centers and to evaluate the conditions in order to clarify the phases of our child care activities and to present future directions for desirable child care. The subjects of investigation were 110 day care centers in Seoul authorized by the city administrators until July, 1990. Child care activities were evaluated focusing on the whole development of the child based on developmental, open, interactional and ecological approach that are emphasized in quality child care. By evaluating the actual conditions of child care activities, it was found that child care activities could not be provided at the high quality program because of limitations of personal and physical resources.
기초연구 ; 아동과 청소년이 지각한 부모의 양육태도와 자아불일치
이순형(Soon Hyung Yi),이영미(Yong Mi Lee) 한국청소년학회 1993 청소년학연구 Vol.1 No.-
The purpose of this study was to investigate children`s and adolescents` self-discrepancies depending on their perception of parental attitudes. The subjects were 421 twelve-, fifteen- and eighteen-year-olds enrolled in three elementary, two junior high and two high schools in Seoul: To measure subject`s perception of parental attitudes and self-discrepancies, the parental attitudes questionnaire and the self questionnaire were used. Statistical methods adopted for data analysis were frequencies, percentiles, mean, standard deviation, oneway-ANOVA and Scheff -test. Major findings were as follows : Children`s and adolescents` self-discrepancies varied according to their perceived parental support and parental control. (1) In actual-ideal self-discrepancy, subjects who perceived parental support higher perceived self-discrepancy lower than those who perceived parental support lower. In actual-ought self-discrepancy, there was no difference according to parental support. (2) In actual-ought self-discrepancy, subjects who perceived parental control higher perceived self-discrepancy higher than those who perceived parental control lower. In actual-ideal self-discrepancy, there was no difference according to parental support.
초 · 중 · 고교 교사가 지각한 시설아동과 일반아동의 사회심리적 적응차이
이순형(Soon Hyung Yi),이혜승(Hae Seung Lee) 한국아동학회 2002 아동학회지 Vol.23 No.4
This study examined teacher`s perceptions of the psychosocial adjustment and problem behaviors of institutionalized children compared with home reared children. Data were collected from the teachers of institutionalized children in elementary and secondary schools. The majority of institutionalized children were regarded as not very much different from home reared children. Still, findings from this study lead to conclusions that institutionalization is likely to elevate children`s risk for adjustment problems such as social withdrawal, peer violence, and academic failure. Findings that the ratio of institutionalized children attending school decreased with age lead to speculation that failure in psychosocial adjustment may lead to to dropping out of school. Finally, a practical framework for the optimal development of institutionalized children is provided, with emphasis on school-community based interventions.