• 생물환경조절학회지
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• 제17권4호
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• pp.247-251
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• 2008

이전 수확으로부터 다음 수확기까지 35일 동안 생육 단계별 장미의 양분 흡수와 식물체내 재분배 및 이동 양상을 구명하여 수경재배 시 생육단계별 급액관리 기준을 마련하고자 본 시험을 수행하였다. 양분의 흡수는 증산량에 관계없이 작물의 생장단계에 따라서 다른 특성을 나타내었다. 주당 1일 N의 흡수는 생육초기 5.6mmol에서 감소하여 15일째에는 4.0mmol로 최소가 된 이후, 점차 증가하며 35일째에는 10.3mmol로 증가하였다. 묵은 지상부 조직의 N과 P 농도는 15일 이후 점차 감소하였으며, K는 20일에 최소가 되었다가 점차 증가하는 경향이었다. 뿌리에서는 N과 K는 15일에 최소가 되었다가 30일에 최대가 되었다가 35일째는 감소하였다. P는 N과 K의 농도 변화와 거의 반대 패턴이었다.

• 한국잡초학회지
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• 제8권3호
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• pp.317-323
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• 1988

본(本) 연구(硏究)는 시설재배(施設栽培)에서 잡초방제(雜草防除)의 기초자료(基礎資料)를 얻고자 대전시(大田市) 유성지역(儒城地域)에서 1985년(年) 2월(月)부터 6월(月)까지 15일(日) 간격(間隔)으로 여러 시설재배조건(施設栽培條件)에서 잡초수(雜草數), 건물중(乾物重), 발생잡초(發生雜草)의 종생태적(種生態的) 및 사회적(社會的) 특성분석(特性分析)과 우점도(優占度)를 조사(調査)하였다. 1. 시설재배(施設栽培)에서 노지(露地)의 경우, 명아주, 여뀌, 쇠비름, 바랭이가 우점(優占)하였으며, PE 하우스는 냉이, 명아주, 바랭이, 쇠비름이 우점(優占)하였고 발생잡초(發生雜草) 본수(本數)는 무멀칭에 비해 멀칭과 턴넬내 멀칭에서는 많이 발생(發生)했으며 건물중(乾物重)은 이와는 반대로 무멀칭에서 무거웠다. 노지(露地)에서는 여름 광엽잡초(廣葉雜草)와 여름 화본과잡초(禾本科雜草)가 많이 발생(發生)했으나 PE 하우스내에서는 무멀칭에서 월동광엽잡초(越冬廣葉雜草)가 우점(優占)했으며 멀칭에서는 초기(初期)에 월동화본과잡초(越冬禾本科雜草)와 월동광엽잡초(越冬廣葉雜草)가 많이 발생(發生)했으나 후기(後期)에는 여름 화본과잡초(禾本科雜草)와 여름 광엽잡초(廣葉雜草)가 많이 발생(發生)하였다. 2. 시설내(施設內)에서 PE 하우스는 시설(施設)을 하므로 Simpson 지수(指數)가 높아 몇 초종(草種)이 우점(優占)하고 있는 군락(群落)을 이루었고 종다양도(種多樣度), 최대종다양도(最大種多樣度)가 안정도(安定度)에 비해 낮았고 또한 무피복보다 멀칭, 턴넬내 멀칭에서 높았으며 노지(露地)는 종다양도(種多樣度), 최대종다양도(最大種多樣度)가 멀칭, 턴넬을 하므로써 높아졌고 Simpson지수(指數)는 무멀칭에서 높고 오히려 시설(施設)을 하므로 낮아졌으며, PE 하우스, 노지(露地) 공(共)히 종간경쟁(種間競爭)이 종내경쟁(種內競爭)보다 높았던 것으로 생각된다.

• Journal of Photoscience
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• 제9권2호
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• pp.174-177
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• 2002

Sugar-linked porphyrin and chlorin compounds have been synthesized. Phototoxicity of these compounds against the HeLa cell line was also examined. For the porphyrin derivatives, the higher activity was observed for a derivative having four OH-protected sugar moieties. For the chlorin derivatives, OH-unprotected free-base derivatives were generally effective. Singlet oxygen producing ability were examined to evaluate the activity on photodynamic therapy of the compounds.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.403-407
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• 2005

Objective of the research is to demonstrate solar thermal space and ground heating system which is integrated to a greenhouse culture facility for reducing heating cost, increasing the value of product by environment control, and developing advanced culture technology by deploying solar thermal system. Field test for the demonstration was carried out in horticulture complex in Jeju Island. Medium scale solar hot water system was installed in a ground heating culture facility. Reliability and economic aspect of the system which was operated complementary with thermal storage and solar hot water generation were analyzed by investigating collector efficiency, operation performance, and control features. Short term day test on element performance and Long term test of the whole system were carried out. Optimum operating condition and its characteristics were closely investigated by changing the control condition based on the temperature difference which is the most important operating parameter. For establishing more reliable and optimal design data regarding system scale and operation condition, continuous operation and monitoring on the system need to be further carried out. However, it is expected that, in high-insolation areas where large-scale ground storage is adaptable, solar system demonstrated in the research could be economically competitive and promisingly disseminate over various application areas.

• 신재생에너지
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• 제1권2호
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• pp.53-59
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• 2005

Objective of the research is to demonstrate solar thermal space and ground heating system which is integrated to a green-house culture facility for reducing healing cost, Increasing the value of product by environment control, and developing advanced culture technology by deploying solar thermal system. Field test for the demonstration was carried out in horticulture complex In Jeju Island. Medium scale solar hot water system was installed in a ground heating culture facility. Reliability and economic aspect of the system which was operated complementary with thermal storage and solar hot water generation were analyzed by investigating collector efficiency, operation performance, and control features. Short term day test on element performance and Long term test of the whole system were carried out. Optimum operating condition and its characteristics were closely Investigated by changing the control condition based on the temperature difference which Is the most important operating parameter For establishing more reliable and optimal design data regarding system scale and operation condition, continuous operation and monitoring on the system need to be further carried out. However, It is expected that, in high-insolation areas where large-scale ground storage is adaptable, solar system demonstrated in the research could be economically competitive and promisingly disseminate over various application areas.

• International Journal of Costume and Fashion
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• 제8권1호
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• pp.1-17
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• 2008

This research analyzes the patterns in modernization of costume that reflects the attitude of accepting the Western culture and the differences in perception, during modernization period (1850-early 1910) in Japan. The Japanese attitude toward the Western costume can be roughly classified into three periods: impetuous acceptance in the early Restoration of Imperial Regime(1867-1883), aggressive acceptance in Rokumeikan period(1883-1887), and the coexistence of traditional and modern costumes after Meiji 20(1887-1910). A Western costume symbolizes wealth and power until Rokumeikan period, however, as it becomes more common, it is considered as an ordinary dress rather than a ceremonial dress. The exact opposite phenomenon occurs to traditional costume. Although Japanese modernization is initially forced by western ideology of power, positive reactions to western culture and changes in perception toward China leads to more active importation of western culture. This reflects the governmental effort such as the Foreigners Employment Policy in the early Meiji period, and the public also became receptive toward change. However, acceptance of the Western culture is only limited to academic and technological areas, while the traditional Japanese ethos(the Emperor system, Shintoism, patriarchism) is obstinately protected. Therefore, it can be inferred that such extreme polarization of modernization and traditional inheritance enabled both perspectives to retain their own characteristics.

• Biotechnology and Bioprocess Engineering:BBE
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• 제8권2호
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• pp.83-88
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• 2003

A cellulose-producing strain isolated from rotten apples was identified as Gluconacetobacter hansenii based on its physiological properties and the 16S rDNA complete sequencing method, and specifically named Gluconacetobacter hansenii PJK. The amount of bacterial cellulose (BC) produced by G. hansenii PJK in a shaking incubator was 1.5 times higher than that produced in a static culture. The addition of ethanol to the medium during cultivation enhanced the productivity of bacterial cellulose, plus the supplementation of 1% ethanol into the culture medium made the produced BC aggregate into a big lump and thus protected the bacterial-cellulose-producing G. hansenii PJK cells in the shear stress field from being converted into non-cellulose-producing (Cel) mutants. Cells subcultured three times in a medium containing ethanol retained their ability to produce BC without any loss in the production yield.

• 한국유기농업학회지
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• 제12권1호
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• pp.101-114
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• 2004

This study was carried out to clarify the effects of antagonistic microorganism, Bacillus sp. JC181 isolated from the greenhouse soil grown cucumber plants on the growth inhibition of plant pathogen, fusarium wilt (Fusarium oxysporum) occurred in cucumber plants in greenhouse. Antagonistic bacterial strains were isolated and were investigated into the antifungal activity of the antagonistic microorganism against fusarium wilt. Screened fourteen bacterial strains which strongly inhibited F. oxysporum were isolated from thc greenhouse soil grown cucumber plants, and the best antagonistic bacterial strain designated as JC181, was finally selected. Antagonistic bacterial strain JC181 was identified to be the genus Bacillus sp. based on the morphological and biochemical characterization. Bacillus sp. JC181 showed 58.2% of antifungal activity against the plant pathogen growth of F. oxysporum. By the bacterialization of culture broth and heated filtrates of culture broth, Bacterial strain, Bacillus sp. JC181. showed 91.2% and 260% of antifungal activity against F. oxysporum, respectivrly.

• 농업과학연구
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• 제17권1호
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• pp.18-25
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• 1990

The above results indicate that vegetable crop production using vinyl houses continously increases. However, technical support and facility improvement are still insufficent to establish a full production system. In order to improve the cultural environment in facilities for better vegetable culture, several facters should be considered. 1. Facility design and arrangement should be made to improve micro-environments for crop growth and development because direction of facility and covering materials can affect the amount of light trasmitted into vinyl houses. 2. Cultivation of several leading varieties in each crop may not provide stable production and profit especially under undesirable environmental conditions. Thus, it is required to grow not only leading varieties but also other cultivars to decrease the economic losses. 3. Crops should be carefully managed when planted in early season not to experience low temperatures which induce growth retards. Early season cultivation requires proper selection of cultivars which are resistant to low temperture. 4. Active control of micro-environment in facilities should be made via improving the ventilation and irrigation systems.

• International Journal of Advanced Culture Technology
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• 제10권2호
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• pp.181-186
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• 2022

In this paper, we examine the shortening of the theatrical window whereby films play at theaters for 90 days as one of the most portentous issues that could reshape the Hollywood film industry. We first examine the windows system that protected the status of movie theaters and the studios' attempt to shorten the theatrical release to create a premium VOD window in response to the declining revenue of DVDs after 2007 and the rise of streaming services. We then look at some of the major disruptions in distribution COVID-19 brought about. We also explore the shortening of the theatrical release in the wake of the pandemic and shows the changes in the theatrical release, along with the expansion of streaming services, raise questions over the long-held primacy of the theatrical release and the definition of film with the theatrical release as its part. From this, we highlight Hollywood at the crossroads of major changes with its future less certain than ever before.