• Korean Journal Plant Pathology
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• v.3 no.3
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• pp.174-179
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• 1987

Four thousand eight hundred and eighty five isolates of Pyricularia oryzae were obtained from the diseased rice specimens collected from various areas of Korea for race identification during 1978 - 1985. A total of 15 races inculding 6 races pathogenic to Tongil lines, 2 T-races, 5 C-races and 2 N-races was identified using a old Japanese differential set during 1978-1980. Since 1981, number of races identified by a Korean differential set was 18 races which were composed of 11 KI-races pathogenic to either Tongil lines or Japonica cultivars and 8 KJ-races pathogenic to only Japonica cultivars. The prevalent race was $N-2^{+t}$ during 1978-1979 and race KJ-301 since 1980, respectively. Races KI-315a and KI-315b pathogenic to most of Tongil lines were identified in 1983. being widely distributed to date. Races KJ-105 and KJ-201 pathogenic to the cultivars possessing resistance genes Pi-k and Pi-i were prevalent in Gangweon province, whereas race KI-315b was prevalent in Chungbug and Jeonnam districts.

• The Korean Nurse
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• v.18 no.5 s.103
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• pp.38-47
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• 1979

• The Journal of the Korean dental association
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• v.16 no.9 s.112
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• pp.715-718
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• 1978

• The Science & Technology
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• v.11 no.4 s.107
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• pp.9-15
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• 1978

• The Science & Technology
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• v.11 no.3 s.106
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• pp.11-11
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• 1978

• The Journal of Engineering Geology
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• v.10 no.2
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• pp.79-97
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• 2000

Trend of earthquake occurrence of Korea represents that the term from 1978 to 1982 may be called as "active period", the term from 1983 to 1991 is rather tranquil, and from 1992, the occurrence number is increasing greatly. Instrumental earthquake observation of Korea started in 1905 by Japan. It continued until 1943 and ceased then through social disorders such as the independence from Japan Empire and the civil war. After that the observation restarted in 1963 by the establishment the World Wide Standard Seismograph Network. And the fundamental earthquake observation period started in 1978 with the Hongsung earthquake event. KMA(Korea Meteorological Administration) has constructed and operated the 24-hour earthquake and tsunami monitoring system and it propels new construction project of the national seismographic network system. In the result of this project, KMA operates 27 seismic networks, 42 accelerator networks, seismic analyzing system, and sea level monitoring system now. It has the plan to enlarge these systems that 31 seismic networks and 75 accelerator networks until 2001.

• Nuclear industry
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• v.6 no.12 s.46
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• pp.41-47
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• 1986

미국 Carolina Power & Light사 (CP&L)의 Brunswick원전 1호기의 금년 1월에서 6월까지의 이용율과 가동율은 각각 $89\%,\;93.1\%$였는데 이 유니트는 1978$\~$1984년 사이에는 평균이용율이 $49.7\%$였었다. 2호기의 이용율과 가동율은 1985년에 각각 $72.5\%$와 $79.3\%$였으며 1978$\~$1984년 사이의 평균이용율은 $42.9\%$였었다. 제작회사인 GE의 통계에 의하면 금년 1월부터 8월까지 1호기의 가동율은 $94.2\%$로서 미국내의 30기의 GE 유니트중에서 3위를 차지했으며 전세계의 47기 GE 유니트중에서는 9위였으며 1985년에 2호기의 이용율과 가동율은 각각 8위와 17위를 기록했다.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.201-207
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• 2022

This study analyzed the Seungmu research trends published in domestic academic journals from 1978 to 2021. Seungmu, a traditional Korean dance, has been handed down for a long time and has established itself as a traditional dance representing Korea. I think that the trend analysis of Seungmu Dance can present basic data that can solidify the succession, preservation and development of Seungmu Dance, a sustainable traditional cultural heritage. I think that the trend analysis of Seungmu dance is a meaningful process that lays the foundation for the vitalization and popularization of Korean traditional dance.

• 한국해양학회지
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• v.14 no.1
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• pp.26-31
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• 1979

1976년 7월부터 1978년 5월까지 2년동안 매 기수월에 진해만의 6개 정점에서 식물성플랑크톤군집의 년변화를 조사하였다. 조사기간 중 수온은 2.28$^{\circ}C$~25.48$^{\circ}C$, 염분도는 27.42 ~33.90 , pH는 8.0~8.5, 투명도는 0.5m~0.8m, 용존산소량은 2.23ml/l~12.32ml/l의 분포를 보였다. 식물성플랑크톤의 출현종수는 30속, 79종, 2품종, 3변종으로 나타났다. 이들의 우점종은 Skeletonema costatum, Thalassiosira hyalina, Leptocylindrus danicus, Chaetoceros curvisetus, Chaetoceros costatus, Nitzschia pungens, Nitzschia seriata였으며, Chaetoceros affinis, Chaetoceros curvisetus, Coscinodiscus centralis var. pacifica, Ditylum brightwellii, Navicula distans, Nitzschia pungens, Pleurosigma elongatum, Thalassiorira hyalina, Thalassiothrix frauenfeldii등은 출현빈도에 있어서 이 지역의 대표종이었다. 출현종의 생태적 구분은 연안종이 67.86%로서 내만의 특성을 나타내고 있다. 현존량의 계절적인 변화는 808~12,461,000 cell/l까지 심한 변화폭을 보이고 있으며, 1976년 7월, 11월, 1977년 5월, 9월, 1978년 5월에 $10^{6}$ cells/l대의 대발생이 있었다. 대발생때의 다양성지수는 1976년 7월에 0.5625~1.0345로 낮은 값을 보여 Skeletonema costatum에 의한 대발생이었으며, 11월의 3.0702~4.1019의 높은 값을 보인때는 18~33종의 다양한 출현종에 의한 것이었다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.31 no.3
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• pp.336-349
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• 1986

This study was conducted to examine the plant succession on the improved pasture of the mountain districts around Mt. Halla in Cheju Island. For this study, the researcher had investigated for ten years the improved pasture which had been used for grazing from 1976 to 1985. The pasture was reclaimed from native grassland. The mixed seeds of 17kgs' Dactylis glomerata, 7kgs' Festuca arundinacea, 2kgs' Lolium multiflorum and 2kgs' Trifolium repens were sowed per ha. The results of this study are the followings; The annual changes in the number of plant species were observed. 37 weed species were found in 1976 and increased year after year to 151 species in 1985. The changes in the distribution of annual and perennial plant, and one species of arbor were found in 1976 and increased respectively year by year to 56 species (annual plant), 95 species (perennial plant) and 9 species (arbor) in 1985. The average plant height of introduced grasses by year increased from 38.05cm (1976) to 47.30cm (1978) and decreased from 40.50cm (1979) to 10.36cm in 1985 (y =-0.501x$^2$+1.609x + 41.946). While the average plant height of invading weeds increased from 26.61cm to 42.84cm (y=-0.80$\chi$$^2$＋2.540$\chi$＋27.570) between 1976 and 1985. The density of introduced grasses was 70.90% in 1976 and was reduced to 0.49% in 1985 (y =-0.501$\chi$$^2$+1.609$\chi$+41.946); while that of introduing weeds was 29.10% in 1976 and was increased to 99.51% in 1985 (y=-0.080$\chi$$^2$＋2.540$\chi$＋27.570). The coverage of introduced grasses by year increased gradually from 72.8% (1976) to 74.86% (1978) and decreased from 43.01% (1979) to 1.21% in 1986 while that of intruding weeds developed a tendency to increase every year. Their coverage in 1976 was 22.09% and increased to 98.78% in 1985. The weight of introduced grasses by year increased from 2,808kg (1976) to 3,535kg (1978) per l0a and after 1979 decreased gradually from 2,326kg (1978) to 35kg per l0a in 1985. That of intruding weeds increased yearly from 308kg in 1976 to 3,178kg in 1985. The type of annual vegetation were changed as follows; Year Type 1976-1978 Dactylis glomerata / Trifolium repens type 1979 Trifolium repens / Imperata cylindrica type 1980-1982 Imperata cylindrica / Zoysia Japonica type 1983 Imperata cylindrica / Pteridium aquilinum type 1984-1985 Imperata cylindrica / Miscanthus sinensis type The plants whose plant height, coverage, density, and weight increased year after year were Imperate cylind-rica, Zoysia japonica, Pteridium equilinum, Miscanthus sinensis, Cirsium japonicum, Erigeron canadensis, Artemisia japonica, Lespedeza cuneata, Spondiopogon cotuUfer. Cymbopogon tortilis, Plantago asiatica, Rumex acetosella, etc. The vegetation of Digitaria sanguinalis, Hydrocotyl japonica, Artemisia asiatica, etc. was com-paratively remarkable in the beginning.