• 현장농수산연구지
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• 제22권1호
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• pp.43-53
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• 2020

본 연구는 국내 호밀 종자의 자급률을 향상시키기 위해 전북 장수지역에 적합한 종자 채종기술을 개발하고자 2013~2015년까지 3개년에 걸쳐 시험을 실시하였다. 품종은 국내 육성종인 곡우호밀을 사용하였다. 시험구는 파종량 4수준(3, 5, 7, 9 kg/10a), 질소시비량 4수준(0, 3, 6, 9 kg/10a)으로 처리별 단요인 시험을 실시하였다. 시험구배치는 난괴법 3반복으로 하였으며, 생육특성과 종실생산성을 평가하였다. 장수지역에서 호밀 종자의 파종량을 10a당 3 kg으로부터 9 kg으로 증가시킴에 따라 m²당 이삭수·도복이 증가하였으며, 유효경수·임실률·리터중·1000립중 및 종실수량은 감소하였다. 질소 시비량은 10a 당 3 kg으로부터 9 kg으로 증가시킴으로써 m²당 이삭수, 간장, 1수립수, 도복 및 종실수량은 증가하였으며, 1립중 및 리터중은 감소하였다. 따라서 호밀의 종실수량, 파종용 종자 비용과 질소 과잉 시비에 따른 환경오염, 도복 등을 고려할 때 장수지역에서 호밀 종자생산을 위해 적합한 파종량은 10a당 5 kg, 질소 시비량은 10a당 6 kg로 추천되었다.

• 한국농공학회지
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• 제16권2호
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• pp.3430-3437
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• 1974

.It is very importaut to know the water consumption of crops in planning irrigation works and practicing suitable soil moisture management. For the purpose of making it clear that how much water be consumed to cultivate the Chinese cabbage, Chamber method has been applied. Main equipments in the transpiration chamber are flowers, manometer and electric thermograph. The chamber made of vynyl plate has a small entrance at the base and an exit at the top, and the ventilation in the chamber was carried out by a flower through the entrance and exit. Air-flow adjusted by an orifice manometer enters the chamber from the outside over the crop canopy through the pipe like a chimney and finally goes out to the outside. Two sets which consist of a pair of dry and wet bulb made by thermistor are installed in the entrance and exit tube, and record air temperature automatically. Evapotranspiration amount is computed from the air-flow quantity and difference in absolute humidity between at the entrance and exit of the chamber by the following equation: ET=(X2-X1)${\times}$Q where ET=evapotranspiration amount X1=absolute humidity at the entrance(g/㎥) X2=absolute humidity at the exit(g/㎥) Q=air-flow quantity(㎥) This study was carried out at the upland farm of the Institute of Agriculture Engimeering and Utilization, Suwon, Korea. from 1971 to 1973. The results obtained in this experiment are as follows: 1. The total amount of evapotranspiration of Chinese Cabbage that is cultivated in autumn is 408.1mm during growth period. 2. Chinese cabbage rapidly grows up in the second ten days of September, 40th to 50th days after seeding. At the same time, the maximum amount of evaportranspiration of Chinese cabbage is 61.6mm/10 days 3. The correlation between Pan-evaporation and evapotranspiration is high, coefficient of correlation r=0.88**, and can be shown as The following regression equation: ET=0.913E+20.273 4. Evapotranspiration is closely related with meteorological factors: r=0.85**, for insolation, r=0.76** for air temperature, respectively. 5. The percentage of evapotranspiration amount, at the beginning of growth stage, gradually increases in proportion as the Chinese Cabbage grows but is largely affected by meteorological factors after the green cover formation. 6. By Blaney and Griddle formula, evaportranspiration coefficient "K" are within from 0,85 to 1.27.

• 멤브레인
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• 제18권3호
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• pp.198-205
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• 2008

제올라이트 분리막을 형성시키기 위하여 결정핵으로 작용할 수 있는 동일한 제올라이트 입자들을 다공성 지지체 위에 균일하게 도포하는 기술을 개발하고자 하였다. 제올라이트 입자들을 수용액에 분산시킨 다음 이 수용액을 튜브형 다공성 세라믹 지지체에 일정 유속으로 공급하고, 세라믹 지지체의 반대편에 진공을 유지하여 일부 수용액이 지지체를 통과하면서 동시에 제올라이트 입자들을 지지체 표면에 도포하였다. 수용액 상에 분산된 제올라이트의 농도, 도포시간 그리고 분산 수용액의 공급속도 등이 결정핵 도포량에 미치는 영향을 고찰하였다. 공급유속이 100 mL/min, 도포시간이 4분인 경우 농도가 0.01 wt%에서 0.3 wt%로 증가할수록 도포량이 0.0019 g에서 0.0208 g으로 증가하였다. 농도가 0.01 wt%, 공급유속이 100 mL/min인 경우 도포시간이 1분에서 4분으로 증가하는 경우 도포량이 0.0004 g에서 0.0019 g으로 증가함을 알 수 있었다. 또한 농도가 0.3 wt%이고, 도포시간이 1분일 때 유속이 100 mL/min에서 300 mL/min으로 빨라진 경우 도포량이 0.002 g에서 0.01 g으로 증가함을 알 수 있었다. 그러나 도포량이 증가할수록 제올라이트 분리막을 통한 물과 에탄올의 총투과속도는 감소함을 확인할 수 있었다.

• Biomolecules & Therapeutics
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• 제22권4호
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• pp.355-362
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• 2014

We have developed a fully automated high throughput drug screening (HTDS) system based on the microfluidic cell culture array to perform combinational chemotherapy. This system has 64 individually addressable cell culture chambers where the sequential combinatorial concentrations of two different drugs can be generated by two microfluidic diffusive mixers. Each diffusive mixer has two integrated micropumps connected to the media and the drug reservoirs respectively for generating the desired combination without the need for any extra equipment to perfuse the solution such as syringe pumps. The cell array is periodically exposed to the drug combination with the programmed LabVIEW system during a couple of days without extra handling after seeding the cells into the microfluidic device and also, this device does not require the continuous generation of solutions compared to the previous systems. Therefore, the total amount of drug being consumed per experiment is less than a few hundred micro liters in each reservoir. The utility of this system is demonstrated through investigating the viability of the prostate cancer PC3 cell line with the combinational treatments of curcumin and tumor necrosis factor-alpha related apoptosis inducing ligand (TRAIL). Our results suggest that the system can be used for screening and optimizing drug combination with a small amount of reagent for combinatorial chemotherapy against cancer cells.

• 한국초전도학회:학술대회논문집
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• 한국초전도학회 2000년도 High Temperature Superconductivity Vol.X
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• pp.293-297
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• 2000

Multiseeding with (100)/(100) grain junctions of top-seeded melt growth (TSMG) processed YBCO superconductors was studied. The effect of the number of seeds and the distance between two seeds on the levitation forces and the trapped magnetic fields of the TSMG-processed YBCO samples was investigated. Multiple seeding shortened the processing time for the fabrication of TSMC-processed YBCO superconductors. The large magnetic field was trapped at the grain junction when two seeds was placed without spacing, while the amount of the magnetic field decreased when the seed distance increased. This is attributed to the increased amount of the residual melt phases around the grain junctions.

• 한국작물학회지
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• 제8권1호
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• pp.99-103
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• 1970

Gibberellin을 Seed Potato에 처리함으로서 seed potato내의 환원당과 비환원당의 소장과 붕아경의 현미경적인 조직의 변화에 대한 몇가지 실험결과를 요약하면 다음과 같다. 1) Gibberellin을 처리한 Seed potato에 함유한 환원당은 처리하지 않은 Seed Potato에 비하여 현저히 증가하였으며 그 증가정도는 붕아일수의 경과에 따라 차가 심하였다. 처리농도에 있어서는 10ppm구가 5ppm구 보다 증가하였으나 파종 14일부터는 반대의 경향을 인정할 수 있었다. 2) Gibberellin을 처리한 Seed Potato에 함유한 비환원당의 소장도 환원당과 동일한 경향임을 인정할 수 있었다. 3) 붕아경은 Gibberllin 5ppm 및 10ppm 구 공히 Control에 비하여 신장이 빨랐으며 14일후에는 10ppm 구는 Gibberellin처리에 의한 도장현상으로 약간의 생육장해가 발생하였다. 4) Gibberellin 처리에 의하여 붕아된 붕아경은 종단 및 횡단세포가 현저히 커졌으며 피시부나 중심부가 균등하게 팽대하였고 10ppm구가 더 커졌음을 인정할 수 있었다.

• 한국환경농학회지
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• 제15권3호
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• pp.383-390
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• 1996

무의 재배시 사용되는 질소비료의 형태, 시비량, 제초제농도가 무의 부위별 질산태질소의 함량, 질산 환원효소 활성 및 생육에 미치는 영향을 조사한 결과는 다음과 같다. 1. 질산태 질소비료가 암모니아태 질소비료 보다 무의 생육에 더 효과적이었으며, 질산태질소의 함량의 경우 무의 엽병과 엽에서는 파종후 25일경에, 뿌리에서는 32일${\sim}$39일 사이에서 높게 나타났다. 2. 또한 무의 부위별 질산태질소 함량은 엽병, 뿌리, 그리고 엽의 순서로, 질산환원효소 활성은 엽병, 엽, 그리고 뿌리순서로 높게 나타났다. 제초제 Alachlor의 농도가 증가함에 따라 무에서의 질산태질소 함량이 증가하는 경향이었으며, 질산환원효소 활성도 같은 경향이었다.

• 한국환경복원기술학회지
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• 제14권6호
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• pp.71-85
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• 2011

In Okdong coal mine abandoned area, every year large amount of mine wastes have been swept away due to heavy rains in summer. Because pH of coal-mine waste is in the early 4, plant naturally does not grow there due to unfavorable condition for growing plant. This study had an experiment to grow plant for 6 months using Mycorrhizae which can be adapted well in acid soil. As a result of Experiment, In the infected experiment pot, 90% of the plants survived but in case of uninfected experiment pot, only 25% were alive. From Growth Experiment, it appeared that average stem length increase (cm/month), average fresh weight increase ($g^{fw}/month$), average dry weight increase ($g^{dw}/month$) were increased by 60%, 21%, 31% respectively. Especially, Mycorrhizae plays an important role in providing nutrients and water when seeding are established. Mycorrhizae prevents death caused by lack of nutrients and water and helps growth and development of plant when seeding are established in the early stage. This study proved that Mycorrhizae is comparatively effective in plant growth and prevention of erosion in coal-mine abandoned area.

• Journal of Ginseng Research
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• 제26권1호
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• pp.10-16
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• 2002

In replicated field trials, the efficacy of pentachloronitrobenzene (PCNB; quintozene) for control of damping-off of ginseng seedlings was found to be affected by timing of application and formulation. Application at the time of seeding and prior to placement of straw mulch was found to provide the moat consistent level of disease control. However, decline in plant stand during the four-year production cycle resulted in most treatments providing similar levels of plant populations at harvest. Soil residues of pentachloronitrobenzene were generally highest (1 $\mu\textrm{g}$ PCNB/g soil) in those treatments that exhibited the highest levels of disease control in the seedling year. Straw contained high levels of quintozene after application. Beet seed assays with artificially-infested soils indicated that current use rates provide an amount of product suitable for high levels of disease control.

• Mycobiology
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• 제36권3호
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• pp.183-189
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• 2008

The production of aerial conidia of Lecanicillium lecanii 41185, a highly virulent fungus, by solid-state fermentation was studied for use as a biocontrol agent against aphids. Among several agro-industrial solid media, steamed polished rice was found to produce the highest amount of aerial conidia. The optimal conditions for aerial conidia production were determined to be a 28.5% moisture content in the rice, 25$^{\circ}C$ culture temperature, rice pH of 6.0, 75% ambient relative humidity, 4-dold seeding culture, 0.6% $KNO_3$, and 12 d of culture time. The conidia yield increased from $5.7\times10^9$ conidia/g polished rice to 18.2 $18.2\times10^9$ conidia/g polished rice following application of these optimized conditions.