• Journal of Animal Science and Technology
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• 제51권6호
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• pp.521-526
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• 2009

Irradiation of egg white increased foaming ability significantly. To investigate the protein modification by irradiation responsible for the increase of foaming ability, 3 major egg white proteins were purchased and mixed (7.7 g/L ovalbumin, 1.8 g/L ovotransferrin, 0.5 g/L lysozyme) as a model system and irradiated at 0, 2.5, and 5 kGy. The different protein expressions were evaluated using 2-D electrophoresis and it was found that ovotransferrin was cleaved by irradiation and molecular weight and isoelectric point were changed. In addition, many uncharacterized proteins were found and it indicated that irradiation modified proteins randomly but mainly fragmentation was observed. Therefore, it can be concluded that protein fragmentation of 3 major egg white proteins responsible for foaming ability may be the main reason for the improvement of foaming ability.

• 한국응용곤충학회지
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• 제34권2호
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• pp.120-126
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• 1995

잣나부 인공조임지의 식생과 임상 토질에 서식하는 날개응애류의 군집지수를 분석한 결과를 요약하면 다음과 같다. 종다양도의 Shannon-Wiener index와 균등도지수는 조임년수가 경과할수톡 낮아지는 경향이었으며 1월에 최고치를, 9月에 최저치를 나타냈다. 종풍부경지수는 6월에 최고치를 5月에 최저치를 나타냈다. 우점도지수는 조림연수가 경과할수록 증가하는 경향이고, 4월과 5월에 최고치를, 1월에 최저치를 나타냈다. 집중도지수는 평균 1.9로서 집중분포를 나타냈으며, 조림연수가 경과할수록 증가하는 경향이고, 4월과 8월에 최고치를 1월에 최저치를 나타냈다. 군집지수간의 상관관계에 있어서는 고도의 유의성이 인정되었으며 풍부도지수와 Shannon-Wiener, 균등도지수는 I정의 상관관계가 우점도, 집중도지수와 Shannon-Wiener, 균등도, 풍부도지수는 부의상관 관계가 인정되었다.

• 한국식품저장유통학회지
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• 제16권1호
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• pp.17-22
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• 2009

본 연구에서는 소비자의 포도주 속성별 선호분석 및 가격 민감성 분석을 실시하였다. 자료는 대구지역 200명의 소비자들을 대상으로 포도주 시음회 및 설문조사를 통해 수집하였다. 세 종류의 국내산 포도주에 대한 만족도, 재구매 의사 및 타인 추천 의사는 모두 아이스와인(Vin Coree)이 가장 높은 것으로 나타났다. 속성별 만족도는 적포도주 (Royal Campbell)와 백포도주(Vin Coree)의 경우 색깔에 대한 만족도가, 아이스와인(Vin Coree)의 경우 병 디자인에 대한 만족도가 가장 높게 나타났다. 적포도주(Royal Campbell)의 가격은 저가한계점보다 낮기 때문에 가격을 인상하고, 품질을 개선할 필요가 있다. 백포도주(Vin Coree)의 가격은 수용가격대의 범위에 포함되나, 최적가격점보다 상회하므로 가격을 인하하는 것이 유리하다. 아이스와인 (Vin Coree)의 출시가격은 고가한계점의 가격이며, 최적가격점을 훨씬 상회하므로 가격 인하가 필요하다.

• 한국식품과학회지
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• 제22권6호
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• pp.711-715
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• 1990

식품 및 의약품 원료로 이용되고 있는 Iysozyme을 난백으로부터 이온교환 크로마토그래프를 이용하여 연속추출하였다. 사용된 수지는 지금까지 수율, 순도, 작동용이성에서 가장 효과적이라고 밝혀져 있는 Duolite C-464 양이온교환수지를 선택하여 $Na^+$형으로 $pH\;7.9{\pm}0.1$로 평형화하여 사용하였다. 조제용 자동 Liquid Chromatography(LC) system(column size ; i.d. 50 mm, bed volumn ; 1020 ml)에서 수지 평형화, 난백접촉, rinse, lysozyme용출 순으로 cycle을 연속적으로 반복하면서 시행하고 그 재현성을 관찰하기 위해 각 cycle별 rinse끝점과 용출끝점의 UV level을 비교하였다. 그 결과 rinse끝점은 19 cycle까지 30% 이하를 유지하였다. 용출 끝점은 17 cycle까지는 30% 이하에서 비교적 안정하였으나 18 cycle 이후 부터는 50% 이상으로 용출능력이 현저하게 감소하였다. 또한, 회수율 비교에서 17cycle까지는 90% 이상을 유지하다가 18cycle에서는 72%, 19 cycle에서는 65%로 격감하였다. 본 추출 정제 lysozyme은 전기영동상 단일 band로 나타났고, densitometer로 측정한 순도는 99% 이상이었다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.62-62
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• 2020

Ginseng is a shade-plant cultivated using shading facilities. However, at too low light levels, root growth is poor, and at high light levels, the destruction of chlorophyll reduces the photosynthesis efficiency due to leaf burn and early fall leaves. The ginseng has a lightsaturation point of 12,000~15,000 lux when grown at 15 to 20℃ and 9,500 lux at 25℃. This study was conducted to select the optimal light intensity of 3-year-old ginseng grown in blue-white film plastic house. The seeds were planted in the blue-white film plastic house with different light receiving rate (March 17, 2020). Between April and September, the average air temperature in the house was 20.4-20.7℃. Average soil temperature was 18.3℃-18.5℃. The chemical properties of the test soil was as follows. The pH level was 7.0-7.4, EC was 0.5-0.6 dS/m, OM was at the levels of 33.6-37.7 g/kg, P₂O₅ was 513.0-590.8 mg/kg, slightly higher than the allowable 400 mg/kg. The amount of light intensity, illuminance, and solar radiation in the blue-white film house was increased as the light-receiving rate increased and the amount of light intensity was found to be 9-14% compared to the open field, 8-13% illuminance and 9-14% solar irradiation respectively. The photosynthesis rate was the lowest at 3.1 µmolCO²/m²/s in the 9% light blue-white plastic house and 4.2 and 4.0 µmolCO²/m²/s in the 12% and 14% light blue-white plastic house, respectively. These results generally indicate that the photosynthesis of plants increases with the amount of light, but the ginseng has a lower light saturation point at high temperatures, and the higher the amount of light, the lower the photosynthetic efficiency. The SPAD (chlorophyll content) value decreased as the increase of light-receiving rate, and was the highest at 32.7 in 9% light blue-white plastic house. Ginseng germination started on April 11 and took 13-15 days to germinate. The overall germination rate was 82.9-85.8%. The plant height and length of stem were long in the 9% light-receiving plastic house. The diameter of stem was thick in the 12-14% light-receiving plastic house. In the 12% and 14% light-receiving plastic house, the length and diameter of taproot was long and thick, so the fresh weight of root per plant was 20 g or more, which was heavier than 16.9 g of the 9% light-receiving plastic house. The disease incidence (Alternaria blight, Gray mold and Damping-off etc.) rate were 0.9-2.7%. The incidence of Sclerotinia rot disease was 7.5-8.4%, and root rot was 0-20.0%. The incidence ratio of rusty root ginseng was 34.4-38.7% level, which was an increase from the previous year's 15% level.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(4)
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• pp.307-310
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• 2002

Color reproductions in most ink jet printer are quite different from that of standard CRT (cathode ray tube) monitor display because of the nonlinear characteristic in subtractive color reproduction. Gray scale CCT(correlated color temperature) reproductions in a typical printer are vary with the input RGB level. A simple method for making constant gray scale CCT and gamma value in photo paper is proposed in this paper. The compensation of the CCT with white point of the photo paper under the CIE standard illuminant D65 and color correction has been confirmed using the LUT(look-up table) to compensate the CCT and gamma curve characteristic.

• Journal of Ginseng Research
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• 제12권1호
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• pp.87-91
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• 1988

일복개량의 일환으로 일복의 피복재선택을 위한 기초자료를 얻고자 적색광, 청색광 및 백색광하에서 미국인삼(Panax quinquefolin L.)의 광합성을 측정하였다. 광질별 광합성량은 전반적으로 적색과, 백색광 및 청색광 순으로 많았으며 그 광합성량의 차이는 조도가 증가할수록 감소되었다. 따라서 일복의 피복물 색상은 적색으로 하는 것이 인삼(미국인삼) 생육에 유이할 것임을 시사되었다.

• 산업공학
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• 제11권2호
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• pp.139-147
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• 1998

The purpose of this study is to survey colors of background, marker, and pointer being used in passenger car's combination meter, and to suggest ergonomic design guidelines of combination meter to enhance driver's readability. An experiment was conducted, in which colors of background, marker, and pointer were selected as independent variables, and reading time, reading error, and preference for combination meter were measured as dependent variables. Most of passenger cars sold in Korea were found to have combination meter with black background, while marker. The experimental results showed that reading time of combination meter with white background, black marker and point was shortest, reading error was lowest in combination meter with black background, yellow marker pointer, and preference for combination meter with white background, black marker and black or red pointer was highest. The results implied that combination meter with white background, black marker and black pointer should be used for comprehensively optimizing reading time, reading error, and preference for it. It was expected that these results could be used as valuable design guidelines when designing combination meter of passenger car.

• Journal of the Korean Data and Information Science Society
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• 제17권1호
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• pp.141-147
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• 2006

BOK-X12-ARIMA has been developed by the Bank of Korea in order to accomodate special features such as lunar effect, labor day and election effect which are intrinsic in Korean seasonal time series. Irregular component resulting from BOK-X12-ARIMA is usually treated as white noise time series. If this shows dependency structure, it may be advisable to incorporate dependency in irregular component into prediction. This article illustrates how to refine point forecast using dependency structure in irregular component.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 춘계종합학술대회
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• pp.705-708
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• 2005

본 연구에서는 점대점(point-to-point) 링크상에서 각 스테이션 간의 안테나 빔의 스위트 스폿을 찾고 유지하는 방법을 제안 한다. 제안한 방식은 송수신 데이터에 안테나의 정보를 같이 실어 보내고 그 정보를 이용하여 신경회로망 중에서 간단한 두개의 ADALINE으로 스위트 스폿을 찾고 유지 한다. 통신방식은 시분할 이중화 방식으로 하고, 두개의 ADALINE을 병렬로 연결하여 원하는 목표값에 수렴하고 유지한다. 제안한 방식의 유용성을 점대점(Point-to-Point) 링크상에서 잡음이 없는 경우와 잡음이 첨가된 경우에 대하여 시뮬레이션을 통하여 확인하였다