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폐광의 냉기 및 냉수를 이용한 온실의 야냉 시스템 개발
강화석,강위수,이귀현,오재헌,김일섭,류근창 ( Whoa Seug Kang,Wie Soo Kang,Gwi Hyun Lee,Jae Heun Oh,Ii Seop Kim,Keun Chang Yoo ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.2
This study was to develop the most effective cooling system which is needed to cool greenhouse during summer night for getting up early blooming of strawberry. Various cooling systems were designed and constructed to use cool air and water from an abandoned coal mine. Cooling systems built for this study included an evaporative cooling system with cooling pad, heat exchanger using small or large radiator, and cooling duct for drawing cool air from coal mine. The cooling pad, small or large radiator and cooling duct were individually tested. Also, combined cooling system was tested by operating cooling pad, small radiator, and cooling duct simultaneously. The results in this study showed that individual cooling systems such as cooling pad, small radiator, and cooling duct had about the same effect on cooling greenhouse. The combined cooling system had little better cooling effect than individual cooling system except the large radiator. The most effective cooling system for cooling of greenhouse was obtained by using a large radiator as the heat exchanger. By using a large radiator, temperature in greenhouse was dropped into about 15℃ when outside temperature was 23-24℃ during summer night.
물리적인 방법을 이용한 잡초 및 병해충 방제 방법의 개발 - 적외선 조사가 잡초종자의 발아율에 미치는 영향 -
강화석,유창연,강위수,이귀현,오재헌 ( Whoa Seug Kang,Chang Yeon Yu,Wie Soo Kang,Gwi Hyun Lee,Jae Heun Oh ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1
This study was to provide the basic information for the development of thermal weeder which uses LPG as fuel. Weed seeds of Digitaria sanguinalis S. and Portulaca oleracea L. mainly developed in from and forestry nurseries were used as experimental samples. At different irradiation temperature(60, 80, 100, 150, 200℃), the dffects of weed seed species(digitalis, purslane), condition of seed(dry, soaked), and irradiation time(2, 5, 10, 20, 30, 60, 180, 300 sec) on seed viability were investigated was investigated by examining interaction and main effect of experimental factors. The results showed that viability of weed seed was significantly affected by all irradiation temperature tested. Irradiation time significantly affected on viability of weed seed on all levels of irradiation temperature. also, there were interactions between condition of weed seed and irradiation time on seed viability at each irradiation temperature.
연구논문 : 다른 수분함량으로 압출성형한 다수확 멥쌀가루의 이화학적 특성
정소희 ( So Hee Jeong ),강위수 ( Wie Soo Kang ),신말식 ( Mal Shick Shin ) 한국식품조리과학회(구 한국조리과학회) 2011 한국식품조리과학회지 Vol.27 No.6
To improve the textural properties of gluten free rice flour based products, the physicochemical and pasting properties of extruded non-waxy rice flours using extruder were investigated. The high yielding Tongil type rice variety, Hanarum was used. Hanarum rice flour was prepared by dry milling from soaked and dried rice grain. The operation conditions of twin screw extruder were 250 rpm of screw speed, 160°C of barrel temperature, and 24, 27, and 30% of moisture content. Hanarum extruded rice flour (HERF) were lower in crude lipid and ash contents, but higher in crude protein than Hanarum rice flour (HRF). The color values of HERF showed significantly different (p<0.05) with different moisture contents. Water binding capacities, apparent amylose contents, and damaged starch of HERF were higher than those of HRF. Moisture contents affected water binding capacities of HERF. Solubility increased with increasing heating temperature and solubilities of HERF differed significantly (p<0.05). X-ray crystallinity was changed after extrusion cooking and that of HERF showed sharp peaks at 2θ =18-20°. The pasting viscosities of HERF kept lower values (~ 10 RVU) constantly.