• Title, Summary, Keyword: 수상분포

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Variarions in Degree of Chalkiness of Rice Kernels According to Their Positions on Panicle (광잎 심복백의 수상위치에 따른 변이)

  • 최상진
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.26 no.3
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    • pp.233-238
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    • 1981
  • This trial was conducted to find out some tendencies in variations of grain chalkiness according to their position on a panicle. To know the varietal character in variations of chalkiness and their relations with grain weight, distribution of chalkiness in bulk seed was observed for four varieties. Milyang 23, relatively clear variety and SR601-25-1, much chalky variety were checked for the grain chalkiness in their positions on the panicle. The results obtained are summerized as follows: Rice chalkinss were varied in degree from 0 (clear) to 9 (chalky) within a variety. Large number of grains were distributed to clear for clear variety and to chalky for chalky variety, but almost equal number of grains were distributed to all degree of chalkiness for intermediate chalky variety. For the relationship between degree of chalkiness and grain weight, chalky grains founded in clear variety and clear grains founded in chalky variety decreased in weight, while in intermediate chalky varieties both grains of clear and chalky decreased. There were great varietions in grain chalkiness on a panicle for both clear and chalky varieties. There was no definite trend in distribution of chalkiness except that the first primary branch and terminal grains in every primary branch showed clear in Milyang 23. Mean degree of grain chalkiness was relatively high in grains of middle part of panicle only from Milyang 23.

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Within0tree Disribution of matsucoccus thunbergianae on Pinus thunbergiana (해송에서의 솔껍질깍지의 벌레 수상분포 양식)

  • 박승찬
    • Korean journal of applied entomology
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    • v.33 no.2
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    • pp.114-121
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    • 1994
  • Population densities of intermediate nymphs and egg saw of Matsucoccus thunbergianae, a major insect pest of Pinus thunbergiona in southern coastal area of Korean peninsula, were est~mated. Tree samples of ca. 10cm D.B.H. were collected from old infestation area and newly invaded area. The numben of plimaly branches per tree were not significantly different by the locality, but those of secondaly and smaller branches were smaller in old infestation area The numbers of intermediate nymphs per tree in old infestation area and in newly invaded area were 10.8 and 13.1 times more than those on the trunk, respectively Approximately between 4, 200 and 208, 500 nymphs per tree were estimated. Men secondaw and smaller bmnch samples collected from the basal part of middle crown height, or from the central or the basal part of lower crown height, the number of samples required for the emr range of 20% were 21 and 11 far 10-20cm and 20-3 crn long branches, respectively. Approx~mately 63.6% of egg sacs of the whole tree were on the trunk. The node/intemode bearing the largest branch had the highest egg sac density; including that, four adjacent nodes/intemodes had ca. 37% of egg saw on the trunk.

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Phototaxis of Fish - Response of Sea-bass to the Attracting Lamp - (어류의 주광성에 관한 연구 - 유도등에 대한 농성어의 반응 -)

  • 양용림
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.24 no.4
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    • pp.158-163
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    • 1988
  • The author has examined how sea-bass, Epinephelus septemfasciatus respond to surface attracting lamps line and underwater attracting lamps line in the experimental water tank (550L$\times$58W$\times$73H cm). The attracting rate was investigated in accordance with the intervals of lighting and putting out hour (1, 5 minute) when each of the attracting lamps was gradually switched off after they were switched on all at once. The results are as follows: 1. Distribution of fish at the illuminated section; (1). The fish was more distributed in the section adjacent to the extinguished section. (2). Difference of distribution between section and section and section was greater at surface attracting lamps as compared with underwater attracting lamps. (3). Surface attracting lamps was more distributed than underwater attracting lamps at intervals of 5 minutes. 2. Attracting rate of the last section; (1). The rate was showed increasing as illuminating time elapse and became L type. (2). Attracting rate in underwater attracting lamps was higher than surface attracting lamps at intervals of 1 minutes and lower than surface attracting lamps at intervals of 5 minuets.

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Preliminary study on the establishment of marine leisure sports infrastructure program (해양레저 인프라 구축에 관한 기초연구)

  • 하해동;전승환;강신영;정영석
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • pp.155-160
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    • 2004
  • The data were collected from the water sports industries, resort owners, equipment manufactures and the associations. The inquiry and data collection were made by visiting the corresponding facilities. Based on these data, the plan for infra instruction of water leisure sports were proposed.

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Evaluation of impact on aquatic communities after the operation of floating photovoltagic systems in agricultural reservoirs (저수지 수상태양광 설치가 수생생물 군집에 미치는 영향 평가)

  • Choi, Sunhwa;Lee, Seungheon;Heo, Namjoo;Joo, Jin Chul
    • Proceedings of the Korea Water Resources Association Conference
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    • pp.233-233
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    • 2020
  • 최근 우리나라의 2030년 10GW의 농촌 태양광 보급목표 달성을 위해 전국적으로 분포하고 있는 저수지 및 댐 등의 공유 수면을 활용한 수상태양광 설치가 적극 검토되고 있다. 수상태양광 사업의 증가와 함께 수상태양광 설치 및 운영이 환경적 측면에서 논쟁이 대두되고 있으나 수상태양광 발전시설이 호소 수생태계에 미치는 영향을 판단할 수 있는 장기적인 조사나 과학적 연구가 부족한 실정이다. 본 연구에서는 저수지에 설치되어 있는 수상태양광 발전시설에 의한 수생태계에 미치는 영향을 파악하기 위해 수상태양광이 운영되고 있는 2개소의 저수지를 대상으로 식물플랑크톤, 동물플랑크톤, 저서성 대형무척추동물, 어류 군집조사를 2개년(2017~2018년) 동안 실시하여 각각의 종풍부도 및 종다양도 지수를 분석하였다. 1차년도에는 수상태양광 패널 설치지역 및 패널로부터 200~250m로 이격거리를 유지하면서 총 6지점을 조사하였으며, 2차년도에는 수상태양광 패널 하부(영향권) 3지점과 패널로부터 약 250m 이격된 2지점(비영향권)을 대상으로 총 6회의 조사를 수행하였다. 식물성플랑크톤, 동물성플랑크톤, 저서 대형무척추동물, 어류 군집에 대한 종풍부도와 종다양성에 대한 분석결과, 종풍부도 및 종다양도는 발전시설 영향권 지역과 비영향권 지역간에 통계학적으로 유의미한 차이는 없는 것으로 나타났다. 종풍부도는 수상태양광 패널로부터 이격거리가 멀어질수록(열린수역으로 향할수록) 감소하는 수치를 보이다가 저수지 수변부에 가까워지면 높아지는 경향을 나타났다. 종다양도 역시 종풍부도 결과와 유사하게 수상태양광 패널 지역으로부터 이격거리가 증가함에 따라(열린수역으로 향할수록) 지수가 감소하다가 저수지 수변부에 가까울수록 높아지는 결과를 보였다. 이러한 결과는 동식물성 플랑크톤과 저서생물 및 어류 군집의 종풍부도, 종다양도가 수상태양광의 영향권과 비영향권간에 큰 차이를 없음을 나타내고 있으며, 일부 분류군의 경우 열린 수면보다 수상태양광 설비에 의한 반 폐쇄수역에서 종풍부도와 종다양도가 오히려 높게 나타났다. 그러나 본 연구결과는 설치된 수상태양광 패널이 전체 수면의 5% 미만에 해당하는 소규모 시설이므로 본 연구결과를 일반화해서 해석하기에는 한계가 있다. 넓은 수면적에 설치되어 있는 대규모 시설 및 20년 이상 장기간 운영되는 수상태양광 발전시설을 대상으로 지속적인 모니터링 및 누적된 환경영향 평가가 필요할 것으로 판단된다.

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문학상 둘러싼 잡음 왜 끊이잖나

  • Lee, Gwon-U
    • The Korean Publising Journal, Monthly
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    • pp.14-15
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    • 1991
  • 문학상을 수상하는 기관별 분포를 보면 협회나 단체에서 제정, 시상하는 문학상이 66개로 가장 많으며 문학관련 잡지사나 출판사가 운영하는 것은 35개로 해마다 늘어나는 추세다. 다음은 특정문인을 추모하는 기념사업회나 문학에 관심있는 단체에서 시상하는 것으로 19개가 있고 언론사가 시상하는 문학상은 5개다.

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Preliminary study on the establishment of marine leisure sports infrastructure program (해양레저스포츠 인프라 구축에 관한 기초연구)

  • Jun, Seung-Jun;Ha, Hae-Dong;Kang, Sin-Young;Cheong, Yeong-Seok;Jeong, Eun-Seok
    • Journal of Navigation and Port Research
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    • v.28 no.6
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    • pp.579-585
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    • 2004
  • The data were collected from the water sports industries, resort owners, equipment manufactures and the associations. The inquiry and data collection were made by visiting the corresponding facilities. Based on these data, the plan for infra construction of water leisure sports were proposed.

Effects of Calcium Hydroxide/Phosphoric Acid Suspending Agents on the Characteristics of Styrene-Based Suspension Polymerized Toners (수산화칼슘/인산 현탁제가 스타이렌 기반 현탁중합토너의 특성에 미치는 영향)

  • Yu, Jae-Goang;Kim, Dae-Su
    • Korean Chemical Engineering Research
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    • v.50 no.5
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    • pp.923-928
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    • 2012
  • Optimizing a water-phase suspending system is very important to manufacture high-quality suspension polymerized toners. Therefore, in this study, the effects of the molar ratio of calcium hydroxide ($CaOH_2$)/phosphoric acid ($H_3PO_4$)(Ca/P), which were used as inorganic suspending agents, and pH of the water-phase on the characteristics of styrene-based suspension polymerized toners were mainly investigated. At first, the water-phase was fixed to neutral condition (pH=7.5) and Ca/P molar ratio was changed from 1.5:1 to 1.76:1. As a result, an ideal calcium phosphate (hydroxyapatite) was prepared at the Ca/P molar ratio of 1.73:1 and polymerized toners prepared at this condition showed good particle size distribution, circularity and charging characteristic. Based on this result, Ca/P molar ratio was fixed to 1.73:1 and pH of the water-phase was changed to weak acidic (pH=5.5) and weak basic (pH=9.5) conditions. As a result, polymerized toners prepared under the weak acidic condition showed very good particle size distribution, circularity and charging characteristic along with excellent printing quality. High-quality suspension polymerized toners could be prepared via optimizing Ca/P molar ratio and pH of the water-phase.

Floating Photovoltaic Plant Location Analysis using GIS (GIS를 활용한 수상 태양광 발전소 입지 분석)

  • Lee, Ki Rim;Lee, Won Hee
    • Journal of Korean Society for Geospatial Information System
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    • v.24 no.1
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    • pp.51-59
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    • 2016
  • Global consumption of fossil fuels continues to increase. As developing countries use fossil fuel as much as the existing fossil fuel using countries, the total amount of fossil fuel consumed has risen. The finite fossil energy depletion insecurity have become serious. In addition, fossil energy is caused by environmental pollution, economic and social problems remain in assignments that need to be addressed. Although solar power is clean and has many benefits, there are several problems in the process of installing a solar power plant. To solve these problems, floating photovoltaic plants has emerged as an alternative. This floating photovoltaic plants location analysis has not been made yet. In this study, the conditions of the floating photovoltaic plants location is analyzed with the Analytic Hierarchy Process using the terrain and climate factors. The score is assigned to the attribute information of each factor by the classification table. After multiplied by the weight the result is analyzed by visualization of the score. As the result, the score of the northen part of Gyeongsangbuk-do province is higher than the southern part of Gyeongsangbuk-do province. Especially Andongho lake in Andong City and the reservoir in Yeongyang-Gun are extracted as the optimal location. The score of the river boundary is low not the center of the river stream. It is expected that this study would be a more accurate floating solar power plant location analysis.

The in Vivo Distribution of $^{99m}Tc-Phytate$ IL-2 Complex on Selective Splenic Arterial Injection (비장동맥에 선택적으로 투여한 Interleukin-2와 $^{99m}Tc-Phytate$ 혼합물의 생체내 분포)

  • Zeon, Seok-Kil;Lee, Hee-Jung;Sohn, Soo-Sang
    • The Korean Journal of Nuclear Medicine
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    • v.26 no.1
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    • pp.124-126
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    • 1992
  • Interleukin-2 (IL-2)는 많은 immunoenhancing lymphokine의 한 종류로서 lymphokine activiated killer (LAK) cell의 생성을 자극시켜 흑종의 종양세포를 죽인다고 알려져 있다. 최근 간종양에서 비장동맥 또는 간동맥으로 투여한 IL-2가 비장의 임파계를 자극하여 LAK cell을 생성하여 어느정도효과가 있음이 밝혀지면서, 여러가지의 투여 방법이 시도되고 있다. 그러나 각종의 투여 방법에서 실제로 투여한 IL-2의 인체내 분포에 관한 연구는 없다. 저자들은 비정맥과 간문맥에 이상이 없는 증례의 비동맥에 IL-2와 $^{99m}Tc-phytate$ 혼합물을 투여하고, IL-2의 생체에서의 비장과 간에 어떻게 분포하는지 알아보기 위하여 $^{99m}Tc$의 radioactivity를 계측하여 보았다. 6예의 간세포암과 3예의 위암으로부터의 전이성간암에서 동맥조영술적방법을 이용하여 초선택적 비장동맥에 투여한 IL-2와 $^{99m}Tc-phytate$ 혼합물이 비장 27%, 간73%의 분포를 보여 비장을 거쳐온 $^{99m}Tc$의 방사능이 간에 많이 침착함을 확인하였고 간과 비장이외의 부위 즉 골수, 복수 또는 폐장이나 늑막에는 전혀 방사능 분포가 없음을 알 수 있었다. 따라서 비정맥이나 간문백에 이상이 없는 증례에서 IL-2의 비장동맥 투여는 목적하는 바 IL-2의 생체내 분포를 이룩할 수 있을 것으로 사료된다.

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