• 한국약용작물학회지
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• 제15권4호
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• pp.261-265
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• 2007

인삼재배가 가능한 임간의 기후적 특성과 임간재배지내에서의 병해충 발생상황 및 생육상황을 관행재배지와 비교해본 결과는 다음과 같다. 가. 임간재배지의 온도는 관행재배지보다 $1^{\circ}C$ 정도 낮고 습도는 2% 정도 높았으며 토양온도는 $1.9^{\circ}C$ 낮고 토양수분도 11.8%가 낮았다. 임간재배지의 풍속은 관행재배지보다 3배 정도 늦었으며 결로시간은 3.3시간 긴 것으로 나타났다. 특히 일사량은 현저히 부족하였고 강우량도 약간 부족한 것으로 나타났으나 큰 차이는 없었다. 나. 2003년이 2004년과 2005년보다 병해의 발생이 많았고 임간재배지에서의 병해발생이 관행재배지보다 심하였다. 때문에 8월 중순경에 지상부가 거의 다 고사되었다. 임간재배지의 주요 병해충으로는 탄저병, 점무늬병 및 뿌리썩음병이었고, 관행재배지는 위의 병해와 잿빛곰팡이병의 발생이 주를 이루는 것으로 나타났다. 해충으로는 잎별레와 나방류가 가해하는 것으로 조사되었다. 3년근의 생육상황을 비교한 결과 임간재배지에서 자란 인삼의 생육상황이 전반적으로 50% 이상 불량하였고 특히 근중은 87.2% 정도 가벼운 것으로 나타났다.

• 한국환경과학회지
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• 제18권9호
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• pp.941-952
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• 2009

The urban microscale wind field around the air quality monitoring station was investigated in order to check how a building complex influences it. For this study as the high density areas Jwa-dong and Yeonsan-dong monitoring sites in Busan were chosen. As the direction of inflow which is perpendicular to the building of the monitoring station was expected to cause the considerable variation of the wind field, that direction was selected. The model Envi-met was used as the diagnostic numerical model for this study. It is suitable for this investigation because Envi-met has the microscale resolution. After simulating it, on the leeward side around a building complex the decrease of flow velocity and some of vortexes or circulation area were discovered. In addition, on the edge of the top at the building and at the back of the building the upward flow was developed. If the sampling hole of monitoring site were located in this upward flow, it would be under the influence of upward flow from the near street.

• 한국연초학회지
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• 제18권1호
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• pp.5-11
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• 1996

Field experiment was conducted to get the basic information about the difference in color and plastid pigments at the different stage of harvest of flue-cured tobacco cultivated in paddy field, and compared to upland ones. All tested crops were primed in lots of 3 to 4 at each priming, beginning at the bottom of the plant. Leaf pigments and chromatic values of tobacco leaves were determined in samples collected at weekly intervals, and according to analyses obtained from 4 stalk positions. By the degree of maturity, leaves harvested were separated with visual characters into four classes of immature, mature, ripe and mellow. regardless of stalk position, chlorophyll contents was higher in the order of immature > mature > ripe > mellow, respectively. In fresh leaves, chlorophyll levels was higher with ascending stalk position. chlorophyll a and b in cured leaves were less than 10% of the amount present at harvest, and it was estimated that maturity condition also influenced the rates of degradation of plastid pigments. Fully mature leaves of upland diverted from paddy field showed slightly higher in chlorophyll contents than in those of upland tobacco ones but somewhat lowered in $L^*$ and $b^*$ values, and there was no difference in $a^*$ value.

• 한국균학회지
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• 제16권2호
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• pp.101-105
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• 1988

• 한국연초학회지
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• 제4권2호
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• pp.31-36
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• 1982

The field evaluation were conducted on dihaploid progenies derived from anther culture of F1 plant of Drama x Sohyang (N. tabacum L.) The mean values of agronomic and chemical traits of dihaploids such as Nicotine, length/width, plant height, Leaf length, leaves per plant and Yield were greater than those of tar parents. The correlation coefficient of dihaploids were similar to those of conventional lines and varieties. In path analysis, in relating yield components to yield, leaves per plant and leaf width had a direct effect on Yield, but the other components such as plant height, leaf length and days to flowering influenced Yield indirect way.

• Journal of Astronomy and Space Sciences
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• 제14권1호
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• pp.126-135
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• 1997

전파연구소 이천분소에서는 1996년 8월에 지자기연속관측시스템을 이천분소(이천관측소: N37.1447, E127,5509)와 경희대학교(용인관측소: N37.1419, E127.0454)에 각각 설치하여 현재 관측중에 있으며, 현재 이것의 데이터베이스를 구축하고 있다. 또한 1997년 여름쯤에는 제주도(제주대학교)에 관측시스템 1식을 추가로 설치하여 한반도의 위도별 지자기 변화를 실시간으로 모니터할 예정이다. 본 논문에서는 이천 및 용인관측소에서 1996년 12월 2일에 관측한 CME(Coronal Mass Ejection)을 Kakioka 관측소, WIND 및 Geotail 위성에서 관측 한 데이터들을 비교 분석하였다.

• International Journal of Aeronautical and Space Sciences
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• 제16권4호
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• pp.590-601
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• 2015

This paper gives an overview of research on the field of structure vibration-attitude coordinated control of spacecraft. First of all, the importance of the technology has been given an introduction, and then later the research progress of space structure dynamics modeling, research progress of structure vibration-attitude coordinated control of flexible spacecraft have been discussed respectively. Finally, future research on application of structure vibration-attitude coordinated control of spacecraft has been recommended.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.349-350
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• 2003

• 식물병연구
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• 제13권3호
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• pp.152-156
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• 2007

백합을 노지재배할 경우 'Raizan'과 'Casa Blanca' 품종에서 잎마름병의 발병엽율이 각각 50%, 45.4%인 반면, 비가림 시설재배할 경우는 발병엽율이 1.5%, 1.9%로 현저히 감소하였다. 또한 비가림 시설재배에서 스프링클러 관수시에 잎마름병 발생율이 $14.5{\sim}16.5%$였으나 점적 관수시에는 $1.5{\sim}2%$로 감소하였다. 백합 잎마름병 발생에 미치는 연작의 영향을 조사하였던 바 초작지에 비하여 재작지 및 3년 연작지의 병 발생율이 현저히 높았다. 월동한 병든 식물체의 잎, 줄기, 꼬투리, 종구에서 B. elliptica의 분리비율은 43.3%, 46.7%, 60%, 0%, B. cinerea의 분리비율은 10.3%, 0%, 3.3%, 0%였으며, 두 균 모두 백합의 꼬투리에서 가장 높은 비율로 분리되었다. Raizan 품종을 절화한 후 식물체 잔재물을 방치한 포장에서는 다음 해 최고 56.5%의 발병엽율을 나타낸 반면에 잔재물을 제거한 포장에서는 발병엽율이 7.3%로 매우 낮았다. 노지재배시 흑색비닐, 수피, 볏짚을 이용하여 멀칭재배를 한 경우 잎마름병의 발병엽율이 각각 6.6%, 8.2%, 11.3%로서 비멀칭재배의 발병엽율 21.3%에 비해 현저히 감소하였다.

• 한국연초학회지
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• 제12권2호
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• pp.91-101
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• 1990

A field experiment was conducted to find out the effects of field productivity, variety and nitrogen rate on the yield, quality, chemical constituents and physical properties of burley cured leaf in three field with different productivity(Degree of field productivity: A ; high, B ; medium, C : low) during successive two years(1988~89). The yield and quality were remarkably lowered when nitrogen fertilizer being applied much in low productive field. As compared with Burley 21, KB101 showed high yield, particularly the yield of KB101 in low productive field was relatively high. The effect of nitrogen rate on the yield was somewhat different according to field productivity and production year. When the nitrogen fertilizer being applied above 22.5kg/10a, the added nitrogen had no effect on the yield. Total nitrogen content of cured leaf grown in low productive field was high while total alkaloid was low, therefore total alkaloid/total nitrogen ratio was remarkably low. The lightness, red and yellow color of cured leaf grown in low productive field was remarkably low. As compared with Burley 21, the contents of total alkaloid and total nitrogen and shatter resistance index of cured leaf was somewhat low, while the filling power, lightness, red and yellow color were slightly high. Total nitrogen content of cured leaf was increased remarkably by nitrogen addition, but total alkaloid was not increased though the nitrogen fertilizer being applied above 22.5kg/10a. The filling power and shatter resistance index of cured leaf grown in high nitrogen plot, and the lightness and yellow color were low while the red color was relatively high. It comes into question that the visual quality being increased as well as increment of yield and nitrogenous compounds by nitrogen addition in high productive field. In low productive field, it is considerable that nitrogen addition for high yield should be prohibited because it causes the decrement of yield and quality, on the contrary.