• Journal of Ginseng Research
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• 제10권1호
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• pp.94-100
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• 1986

홍미삼을 원료로 홍삼엑기스를 제조할때 추출용매, 온도 및 시간등의 추출조건이 홍삼엑기스의 색상과 관능적 조화미에 미치는 영향을 조사한 결과 홍삼엑기스의 색상은 에탄올의 농도증가에 따라 갈색도는 감소되고 L치 및 b치가 증가되는 반면 a치는 감소되어 황절색계가 주가 되었으며 온도상승에서는 이와 반대로 암적황색계가 주가 되었꼬 추출시간 경과에 따라 갈변반응은 계속 진행되었다. 관능적인 홍삼의 향취는 90~50% 에탄올구에서 좋았고 고미성질은 90~70%구에서 현저하였으나 전체적인 조화미로는 70~30%구가 유의성있게 선호되는 것으로 평가되었고 이들 용매에서는 구간의 차이가 없었다. 온도상승으로도 유의적인 차이가 인정되지 않아 홍삼엑기스의 색상과 관능적인 성질에 영향을 미치는 주요한 인자는 추출용매로서 에탄올의 농도임임을 알수 있었다.

• Journal of Ginseng Research
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• 제10권1호
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• pp.36-44
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• 1986

추출조건이 인삼엑기스의 일반성분 및 사포닌 함량에 미치는 영향을 조사하기 위하여 수삼과 백삼을 시료로 추출용매, 용매농도, 온도등의 조건을 달리하여 조사 비교한 결과 수삼의 경우 $70^{\circ}C$ 및 $100^{\circ}C$구가 다른구에 비하여 가용성물질의 용출량이 5배이상 컸으며 사포닌의 용출율은 $70^{\circ}C$-$H_2O$구가 가장 높았고, $100^{\circ}C$구는 거의 1/2이 감소되었다. 압착에 의한 방법으로 사포닌의 52%가 추출되었고 triol계가 diol계 사포닌보다 더 잘 추출되었다. 전당, 환원당, 조단백 및 총 아미노산의 용출율도 $H_2O$구가 ethanol구보다 높은 값을 나타내었고 회분은 압착구에서 높은 값을 보였다.

• 디지털융복합연구
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• 제13권12호
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• pp.89-97
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• 2015

1960년대에 유럽에서 출발한 식물공장은 종자학, 양액 기술, 환경제어 기술, 자동화시스템 등 관련 기술의 발전에 힘입어 완전인공광형 식물공장의 형태로 발전했으며, 최근에는 ICT 기술과의 융합을 통해 작물 재배의 효율성을 늘려가고 있다. 국내에서도 식물공장에 관한 성과가 도출되면서 식물공장에 대한 관심이 높아지고 있으나 산업 생명주기로 볼 때 여전히 도입기에 머물러 있으며 정부 투자는 점점 줄어들고 있다. 연구자는 식물공장과 관련한 정책, 기술, 사업 분야의 전문가를 대상으로 설문조사를 실시하여 식물공장의 투자 가치를 재분석하고, 식물공장의 경쟁력 강화 방안을 도출하고자 하였다. 본 연구는 식물공장 산업의 기회와 위험요인을 식별하고, 식물공장의 고부가가치 창출을 위한 전략을 제시했다는 점에서 연구 의미를 가질 수 있을 것으로 기대한다.

• 한국잠사곤충학회지
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• 제38권2호
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• pp.154-159
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• 1996

전국 토양, 앙장 농가, 저곡 창고, 시설 원예 단지, 과수원, 산, 밭 등에서 분리한 토양과 먼지 등의 시료로부터 거세미나방속 해충에 강한 독성을 보이는 7개 균주를 분류하였다. 이들을 각각 STB-1에서 STB-7까지 명명하였으며 모두 약 130kDA의 내독소 단백질을 형성하였다. 편모항원성 검정 결과 STB-1, STB-2는 B. thuringiensis subsp. kurstaki와 STB-3, STB-4, STB-5는 subsp. kenyae와 반응하였으며 STB-6, STB-7은 기존의 편모항체와 반응하지 않았다. PCR로 유전자형을 분석한 결과 STB-1은 B. thuringiensis subsp. kurastaki에서는 보고되지 않은 cryIE 유전자를 가지고 있으며 STB-5는 subsp. kenyae와는 다른 유전자형을 보였다. 기존의 편모항체와 반응을 보이지 않은 STB-6와 STB-7은 cryIA(a), cryIA(b), cryIC, cryII를 가지고 있었다.

• 한국안전학회지
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• 제32권2호
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• pp.52-58
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• 2017

One of the most important elements of the management of chemical accident is threat zone estimation of fires, explosions and toxic gas dispersion based on chemical releases. The threat zone estimation is going to be standard of emergency response for the first defender and base line data of off-site risk assesment (hereinafter referred to as "ORA") and risk management plan (hereinafter referred to as "RMP"). Generally, ALOHA form EPA(U.S.) and Kora(from KOREA MINISTRY OF ENVIRONMENT) has been used for the off-site consequence analysis in Korea. However it is hard to predict accurate consequences rapidly in case of emergency. Hydrochloric acid is a multipurpose raw material used in many industrial applications such as chemical, metal and food industries. It is usually treated in concentrations from 10 ~ 35 %, and release accident have occurred frequently. In this study, we have developed a simplified estimating method and equation to calculate threat zone easily in case of emergency due to release accident of hydrochloric acid.

• Preventive Nutrition and Food Science
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• 제7권2호
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• pp.188-194
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• 2002

This study was carried out to observe changes in several detection factors derived from thermoluminescence (TL) of minerals separated from irradiated Korean perilla and sesame seeds during storage under normal room and darkroom conditions. The TL intensities of the first glow curves increased from 0 to 5 kGy but only slightly increase from 5 to 10 kGy. Maximum TL temperatures of the first glow curves in all irradiated samples were around 20$0^{\circ}C$, ranging from 150 to 25$0^{\circ}C$. Since the control (0 day of storage) glow curve ratios of G3 and G4, calculated from re-irradiated (1 kGy) sample were over 0.5, detection of irradiation was possible. However, because Gl ratios were below 0.1, they were classified as non-irradiated. There was n unique first glow curve shape that could be clearly seen in all irradiated samples, regardless of storage conditions, that was never seen in non-irradiated samples. In all samples, the maximum TL temperatures and shape of the second glow curve was in a lower temperature range than that of the first glow curve. Therefore, detection of irradiated Korean perilla and sesame seeds was possible fur up to 3 months after irradiation, regardless of storage conditions, by examining several TL detection factors; including TL intensity, glow curve ratios maximum TL temperatures, and the shapes of glow curves.

• 디지털융복합연구
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• 제15권12호
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• pp.13-23
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• 2017

오늘날 '정보화사회' 구축은 국가경쟁력 획득에 중요한 수단이 된다. 특히, 우리나라는 전 세계적으로 성공적인 정보화 구축 대표 사례로 평가 받고 있다. 이와는 반대로 북한은 심각한 '정보격차' 문제로 인해 그렇지 못한 실정이다. 이러한 정보격차의 발생원인으로는 세 가지 측면이 있다. 첫째, 매체접근성, 둘째, 정보동원력, 셋째, 정보의식이다. 이러한 세가지 측면을 바탕으로 통일 이후 북한지역의 정보화 구축 과정에 대해 설계 제안한다. 본 연구의 목적은 통일시대를 대비해 어떻게 북한 지역의 정보화 구축을 할 것인가에 대해 단계별 실행 전략을 도출하고자 한다. 이를 위해 우리나라와 북한의 정보화 구축 단계들을 각각 살펴보고 추진과정을 분석하였다. 본 연구에서 제시한 실행전략이 향후 연구에 있어서 거대한 담론을 일으키는 초석이 될 수 있을 것으로 기대한다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2019년도 학술발표회
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• pp.155-155
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• 2019

The Agricultural Policy/Environmental eXtender (APEX) models have been developed for assessing agricultural management efforts and their effects on soil and water at the field scale as well as more complex multi-subarea landscapes, whole farms, and watersheds. National Academy of Agricultural Sciences, Wanju, Korea, has modified a key component of APEX application, named APEX-Paddy for simulating water quality with considering appropriate paddy management practices, such as puddling and flood irrigation management. Calibration and validation are an anticipated step before any model application. Simple techniques are essential to assess whether or not a parameter should be adjusted for calibration. However, very few study has been done to evaluate the ability of APEX-Paddy to simulate the impact of multiple management scenarios on nutrients loss. In this study, the observation data from experimental fields at Iksan in South Kora was used in calibration and evaluation process during 2013-2015. The APEX auto- calibration tool (APEX-CUTE) was used for model calibration and sensitivity analysis. Four quantitative statistics, the coefficient of determination ($R^2$),Nash-Sutcliffe(NSE),percentbias(PBIAS)androotmeansquareerror(RMSE)were used in model evaluation. In this study, the hydrological process of the modified model, APEX-Paddy, is being calibrated and tested in predicting runoff discharge rate and nutrient yield. Field-scale calibration and validation processes are described with an emphasis on essential calibration parameters and direction regarding logical sequences of calibration steps. This study helps to understand the calibration and validation way is further provided for applications of APEX-Paddy at the field scales.

• 한국환경보건학회지
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• 제47권2호
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• pp.175-181
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• 2021

Objectives: The correlation between the size of a leak hole, the volume of the leakage, and the range of influence was investigated for a hydrochloric acid tank-lorry. Methods: For the case of a tank-lorry chemical accident, KORA (Korea Off-site Risk Assessment Supporting Tool) was used to predict the leak rate and the range of influence according to the size of the leak hole. The correlation was studied using R. Results: As a result of analyzing the leak rate change according to the leak hole size in a 35% hydrochloric acid tank-lorry, as the size of the leak hole increased from 1 to 100 mm, the leak rate increased from 0.008 to 83.94 kg/sec, following the power function. As a result of calculating the range of influence under conditions ranging from 1 to 100 mm in size and 10 to 60 minutes of leakage time, it was found that the range spanned from a minimum of 5.4 m to a maximum of 307.9 m. As a result of multiple regression analysis using R, the quadratic function model best explained the correlation between the size of the leak hole, the leak time, and the range of influence with an adjected coefficient of determination of 0.97 and a root mean square error of 22.33. Conclusion: If a correlation database for the size of a leak hole is accumulated for various substances and under various conditions, the amount of leakage and the range of influence can easily be calculated, facilitating field response activities.

• 대한수의학회지
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• 제15권2호
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• pp.147-152
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• 1975

Although considerable research has been done on the blood picture of the horse, hot-blooded and cold-blooded, little work has been made of the blood picture of the army pack horse, Jeju horse. The object of the present investigation was to make good this deficiency, and to suggest standard for the blood picture of army pack horses kept under the regular military training and the ideal feeding in the heart of a mountain. Blood samples were drawn from the jugular vein through a 15-gauge bleeding needle from 41 males and 28 females, aging 3 to 9 years old. It was taken between seven and nine o'clock in the morning. Animals were handled as quietly as possible to avoid any excitation. No restraint other than a halter was used. Enumeration of erythrocyte, total and differential leukocyte count, determination of hemoglobin in blood, and the value of packed cell volume were male in the usual manner, and erythrocytic constant was calculated by the method of Wintrobe. Erythrocyte count was $7.83{\pm}0.20(4.95{\sim}11.05){\times}10^6/mm^3$(SE). This value was much lower than hot-horses, but slightly higer than the values of cold-horse reported from foreign country. Concentration of hemoglobin in blood was $13.0{\pm}0.33(9.5{\sim}17.8)g/100ml$. This value was much higher than that of cold-horses observed by the other authors, approaching to the values of hot-horses. Packed cell volume was $32.1{\pm}0.92(22{\sim}42)ml/100ml$. This vague was a little higher than that of the other cold-horses. Mean corpuscular volume was $41.5{\pm}1.20(26.6{\sim}59.3){\mu}m^3$. This value matched so well with the other results recorded by various investigators. Mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration were $16.9{\pm}0.43(12.3{\sim}25)$ pg and $41.0{\pm}0.45(29.1{\sim}51.1)g/100ml$, respectively. These values were significantly higher than the values found by the other investigations. Total leukocyte enumeration was $10.5{\pm}0.41(5.6{\sim}17.9){\times}10^3/mm^3$, being considered as normal. And differential leukocyte count of neutrophil was $44.5{\pm}2.23(15{\sim}76)%$, $5,527{\pm}234(2,231{\sim}9,144)/mm^3$, of lymphocyte $50.5{\pm}1.19(19{\sim}77)%$, $4,307{\pm}125(1,456{\sim}11,098)/mm^3$, of monocytel (0~4)%, $105(0{\sim}352)/mm^3$, of eosiophil 3.2(0~14)%, $340(0{\sim}1,232)/mm^3$ and of basophil 0.25(0~3)%, $23(0{\sim}236)/mm^3$. The percentage of the differential count obtained from the present work showed a good agreement with the results of various authors. Of the horses examined monocyte was found from 42 horses, eosinophil from 62 horses and basophil from 10 horses. No significant differences recognized between male and female horses, and the effect of age was not observed between three to nine years old. Judging from the blood picture of the present investigation, it could be stated that the army pack horses on training were kept better than the average farming conditions.