• 건축역사연구
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• 제32권1호
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• pp.21-34
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• 2023

The purpose of this research is to investigate Korean architects' perception of the Modern Movement in architecture in the West during the Japanese colonial period, by analyzing two Korean publications in the 1930s: Park Dongjin's 'Present Architectural Tendency' (Dong-A Ilbo, March 1931) and Hong Yunsick's 'Trend in the Thought of Moderne Baukunst' (Chogwang, September 1937). As a result of the investigation, it is confirmed that the two men welcomely accepted the universal modernity, regarding the rational and functional - rather than subjective expressions of the individual - as the key to modern architecture. Although their perception of the Modern Movement in Western architecture was inevitably superficial due to the limited condition of the Japanese colonial period in Korea, there was an obvious advancement in the latter's perception from the former's, reflecting the progress in knowledge of it over the six and a half years between the two. Therefore, it is argued that their 1930s' writings are meaningful as the first Korean publications that illustrate how Korean architectural circles perceived the contemporary architectural movement in the West.

• 한국어병학회지
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• 제18권1호
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• pp.1-18
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• 2005

This study was performed to investigate the myxosporidian parasites from several organs of freshwater fishes caught from Dongjin River, Jeonbuk Province of Korea. Twelve myxosporidian species were dectected from five fish species out of sixteen fish species. From the gall bladder of Opsariichthys uncirostris amurensis, Zschokkella opiocephali was found; from the skin, gall bladder, liver and spleen of Pseudobagrus fulvidraco, Zschokkella opiocephali and Myxobolus cheisini were found; from the gill, skin, gall bladder and kidney of Carassius carassius, Zschokkella ctenopharyngodonis, Chloromyxum koi, Sphaerospora sinensis, Myxosoma abbottinae, Myxobolus koi and Myxobolus suturalis were found; from the kindney of Misgumus anguillicaudatus, Myxidium lieberkuhni, Neomyxobolus ophicephali and Telohanellus misgurni were found; from the gill of Cyprinus carpio, Myxosoma abbottinae and Myxobolus dispar were found. All these parasitized fishes didn't show any specific symptom.

• 한국작물학회지
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• 제43권1호
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• pp.38-43
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• 1998

This study examined root growth and distribution under the direct seeding of rice cultivars developed in Korea, Japan, and the U.S. Cultivars from the U.S., especially 'M202' and 'Caloro', had a high ratio of the dry matter partitioning for root and top plant components. Caloro had high root and top growth. 'Koshihikari' from Japan showed the lowest ratio of R/T (root/total dry matter) due to the small amount of root and top plant growth. Most Japanese cultivars except transplanted 'Hatsuboshi' showed low ratio of R/T. Patterns of root distribution for each soil block were recorded by the root box-pin board method. Roots of all cultivars were distributed in blocks A, C, and E in the middle of box, i.e., just below the plant base. Roots of 'Dongjin', M202, and Caloro were distributed deeper than the others. Roots of transplanted Hatsuboshi developed much better than direct seeded Hatsuboshi. Total root weight density was highest in Caloro followed by Dongjin, 'Gancheok', 'Calrose', and the others. The root density of Caloro was twice as much as those of the others except Dongjin. According to cumulative percentages of root distribution on each soil layer, roots of most cultivars were distributed below 20cm. The U.S. cultivars showed vertically well developed root systems as compared to others. A large amount of roots were distributed in the top 15cm of soil layer for Hatsuboshi and Koshinikari, and their root systems appeared to be shallow. In contrast, the rates of root distribution in the top 10cm of soil layer were low for Dongjin, Calrose, and Caloro. These cultivars had relatively deep root systems.

• 농업과학연구
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• 제45권1호
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• pp.28-37
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• 2018

This study was done to develop environmental risk assessments and a biosafety guide for insect-resistant genetically modified rice at a LMO (Living Modified Organism) isolation field. In the LMO quarantine area of Kyungpook National University, the species diversities and population densities of non-target insects found on insect-resistant genetically modified rice (Bt-9) resistant to Cnaphalocrocis medinalis and on non-GM rices (Dongjin and Ilmi) were investigated. The Bt-9 event was therefore evaluated under field conditions to detect possible impacts on the above ground insects and spiders. The study compared transgenic rice and two non-GM reference rices, Ilmi and Dongjin, at Gunwi in Southern Korea in 2016. Each rice was grown on three $18m^2$ plots with a randomized block design. A total of 4,243 individuals from 43 families and 9 orders were collected from the LMO isolation field. In the three types of rice fields, a total of 1,467 individuals from the insect-resistant genetically modified rice (Bt-9), 1,423 individuals from the Ilmi, and 1,353 individuals from the Dongjin were collected, respectively. There was no difference between the population densities of the non-target insect pests, natural enemies and other insects on the insect-resistant genetically modified rice (Bt-9) and non-GM rices. These results provide the diversity and population density of non-target insects for an environment risk assessment survey on insect-resistant genetically modified rice and could be used as a guideline to make a biosafety assessment method for genetically modified crops.

• 한국작물학회지
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• 제58권3호
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• pp.213-219
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• 2013

A field study was conducted to understand nitrogen use efficiency of high yielding Japonica rice varieties under three levels of nitrogen fertilizer (90, 150 and 210 kg N $ha^{-1}$) in Iksan, Korea. Two high yielding rice varieties, Boramchan and Deuraechan, and an control variety, Dongjin2, were grown in fine silty paddy. Nitrogen use efficiencies (NUE) were 83.3, 56.3, and 41.2 in 90, 150, and 210 kg N $ha^{-1}$ fertilizer level, respectively. Total nitrogen uptake varied significantly among nitrogen levels and varieties. Variety Dongjin2 showed the highest nitrogen uptake efficiency (NUpE), while Boramchan and Deuraechan showed higher nitrogen utilization efficiency (NUtE). However, Nitrogen harvest index (NHI) was higher in Boramchan (0.58) than Deuraechan (0.57) and Dongjin2 (0.53). Rough rice yield showed linear relationship with total nitrogen uptake ($R^2$=0.72) within the range of nitrogen treatments. Boramchan produced significantly higher rough rice yield (8546 kg $ha^{-1}$) which mainly due to higher number of panicles per $m^2$ compared to Deuraechan (7714 kg $ha^{-1}$). Deuraechan showed higher number of spikelets per panicle, but showed lower yield due to lower number of panicle per $m^2$. Rice varieties showed different nitrogen uptake ability and NUE at different nitrogen level. Plant breeders and agronomist should take advantage of the significant variations and relationships among grain yield, NUpE, and NUE.

• 농촌계획
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• 제9권2호
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• pp.19-28
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• 2003

It is the purpose of this study to investigate the change of stream water quality in upper stream of Dongjin river, and to give the basic information for the conservation of water quality. Water samples were taken periodically at 9 sampling sites during 8 months from March to October in 2002. The results of this study were as follows : 1. The water temperature and pH of stream water were ranged $9.0{\sim}29.4^{\circ}C,\;6.48{\sim}9.33$, respectively. The COD values of stream water was ranged from 0.60 to 19.06. The contents of T-N and T-P mainly affected by the livestock wastes, and agricultural activity were $1.88{\sim}6.74\;mg/L$, ND(not deleted)${\sim}0.50\;mg/L$, respectively. 2. The SS, DO and BOD values of stream water were ranged $0.4mg/L{\sim}274.0mg/L$, $0.5{\sim}6.0\;mg/L$, and $7.3{\sim}13.7\;mg/L$ respectively. 3. The cation is one of the important components in analysis of stream water quality. The contents of analysis, $Ca^{++},\;Mg^{++},\;Na^+$ and $K^+$ were ranged $1.96{\sim}11.08\;mg/L$, $1.21{\sim}6.16\;mg/L$, $3.38{\sim}18.44\;mg/L$, $1.12{\sim}7.96\;mg/L$, respectively. SAR was ranged $0.31{\sim}1.63$ below 2.0. The contents of cation showed in the order $Na^{++}>Ca^{++}>K^+>Mg^+$. 4. The contents of heavy metal Zn, Cu, and Pb were $ND{\sim}0.071\;mg/L$, $ND{\sim}0.012\;mg/L$, and $ND{\sim}0.043\;mg/L$, respectively. Cd was not detected in all samples. 5. As a result of these researches showed water quality in upper stream watershed of Dongjin river more affected by livestock wastes and living sewage than agricultural activity.

• 한국환경농학회지
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• 제23권2호
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• pp.81-84
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• 2004

새만금 유역의 수질관리를 위한 기초자료 확보를 목적으로 만경강 및 동진강 유역의 개황과 각 하천 본류의 수질에 미치는 지천들의 영향을 평가하기 위하여 2001년 6월부터 2002년 9월까지 동절기를 제외한 영농 기간동안 매월 1회 주요 지천들의 본류 유입 전 후의 BOD 변화를 조사한 하였다. 만경강 수계는 미처리된 축산폐수로 오염된 익산천 유입 후 BOD가 증가하였으며, 전 조사 기간동안 평균 5.4 mg/L이었다. 만경강 수질에 큰 영향을 주는 익산천은 왕궁천과 합류되기까지 평균 BOD는 5.4 mg/L로 만경강 본류의 평균 농도와 같은 수질을 보였으나 인근 축산단지로 부터의 축산폐수 유입으로 익산천 하류의 BOD는 평균 13.6 mg/L로 수질이 악화되었다. 동진강 수계는 조사기간 동안 평균 BOD가 2.8 mg/L로 만경강 보다 양호한 수질을 보였으며, 생활하수 및 공장폐수로 오염된 정읍천 유입으로 동진강 하류의 수질은 평균치 보다 다소 높은 3.5 mg/L을 나타냈다. 또한, 만경강 및 동진강 수계의 연차별 수질은 2001년도에 비해 2002년도에 BOD가 다소 낮은 경향을 보였다.

• 한국토양비료학회지
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• 제17권2호
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• pp.125-133
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• 1984

본(本) 硏究는 호남지방(湖南地方)의 곡창(穀倉)이라고 불리우는 만경강(萬頃江) 및 동률강유역(東律江流域)의 호남평야(湖南平野)와 영산강유역(榮山江流域)의 광나평야(光羅平野)에 분포(分布)하고 있는 답토양(畓土壤)의 제(諸) 조건(條件)을 비교(比較)하여 토지생산성(土地生産性) 그리고 토양특성(土壤特性)을 토대(土臺)로 경종관리상(耕種管理上)의 문제점(問題点)에 대(對)한 개선책(改善策)을 마련하고져 조사(調査)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 미(美) 농무성(農務省) 신토양(新土壤) 분류(分類)에 의(依)하면 조사지역(調査地域)에 있어서 Entisols를 비롯하여 3종(種)의 Order가 분포(分布)하며 이들 중(中) Inceptisols이 주종(主種)을 이루고 있으며(76.6%~86.1%), Great group에 있어서는 Haplaquents등(等) 8종(種)이 분포(分布)하나 각(各) 강유역(江流域) 공(共)히 Haplaquents가 50% 이상(以上) 점유(占有)하고 있으며, 다음이 Eutrochrepts로써 13.9%~16.5%이었다. 2. 모재별(母材別) 분포(分布)에 있어서 동진(東津) 만경강유역(萬頃江流域)과 영산강유역(榮山江流域)이 크게 상이(相異)하여 동진(東津) 만경강유역(萬頃江流域)에서는 대부분(大部分)이 하해혼성충적시(河海混成沖積尸) 이었으며(55.1%) 다음이 곡간충적시(谷間沖積尸) 하성충적시(河成沖積尸) 순(順)이었으나, 영산강유역(榮山江流域)은 곡간충적시(谷間沖積尸)이 주(主)로 점유(占有)되었으며 (37.7%) 다음 하성충적시(河成沖積尸) 하해혼성충적시(河海混成沖積尸)으로 분포(分布)되어 있다. 3. 지형(地形) 및 경사별(傾斜別) 분포(分布)에 있어서 동진강(東津江) 및 만경강유역(萬頃江流域)은 경사(傾斜) 2% 미만(未滿)인 해안(海岸) 및 내륙평탄지(內陸平坦地)에 답토양(畓土壤)이 주(主)로 분포(分布)되어 있는(57.8%) 반면(反面), 영산강유역(榮山江流域)은 평탄지(平坦地) 혹(或)은 파상지(波狀地)(순사(順斜)2~7%)인 곡간지(谷間地)에 주(主)로 분포(分布)되어 (52.9%) 이들 양강(兩江) 유역(流域)은 지형(地形)과 경사(傾斜)에 있어서 아주 상이(相異)하다. 4. 토양단면(土壤斷面) 및 표토(表土)의 토성(土性)에 있어서 영산강유역(榮山江流域) 답토양(畓土壤)은 세립질토양(細粒質土壤)이 81.9%가 분포(分布)한 반면(反面,), 동진강유역(東津江流域)은 61.4% 만경강유역(萬傾江流域)은 53.3%가 분포(分布)하고 있다. 5. 영산강유역(榮山江流域)은 보통답(普通畓)이 주종(主種)을(60.2%) 이루고 있는 반면(反面), 만경(萬頃) 동진강유역(東津江流域)은 보통답(普通畓) 43.2%, 사질답(砂質畓) 39.9%로써 영산강유역(榮山江流域)에 비(比)하여 사질답(砂質畓)의 분포(分布)가 월등(越等)히 많으며 이로 인(因)하여 영산강유역(榮山江流域)이 동진(東津) 만경강유역(萬頃江流域)보다 생산력(生産力)이 높은 1내지(乃至) 2급지(級地)의 답토양(畓土壤)의 분포(分布)가 많았다.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.574-579
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• 2005

This study was performed to investigate the stream water quality characteristics according to the seasonal variation at Dowon-chon of the Dongjin river. Water samples were taken during 15 months from May in 2004 to July in 2005. The measured pH, EC of the stream water was ranged $6.49{\sim}7.22,\;21.0{\sim}173.4{\mu}S/cm$. The concentration of T-N, T-P, COD, SS, DO, BOD were $2.14{\sim}8.93mg/L$, $0.01{\sim}0.39mg/L,\;1.22{\sim}12.08mg/L,\;12.0{\sim}2,124.0mg/L,\;5.01{\sim}11.50mg/L,\;0.5{\sim}6.0mg/L$ respectively.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.935-936
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• 2009

In this paper, we describe the basic operating mechanism of our novel reflective display, Fast Moving Ball Actuator (FMBA) mode[1], using micro-sized metal coated polymer ball in fluid medium. Metal surface of the ball can be charged up by contact electrode and their locations can be controlled by applied field to obtain optically on and off state. In the medium with high viscosity, the response speed of the moving ball might be reached into their terminal velocity and changed in proportion to the frequency of applied voltage on the electrodes.