• 한국식품저장유통학회지
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• 제10권1호
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• pp.54-59
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• 2003

제주도를 5지역으로 구분하여 조생 감귤을 3년간 구입한 후 감귤의 품질인자로서 색도, 크기(종, 횡), 중량, 균일도, 당도, pH 및 적정산도를 조사하였으며, 이 결과를 이용하여 각 품질인자의 연도별, 지역별 분포를 분석하였다. 감귤의 3년 평균 녹색도(100-황색도)는 2.58%로 대부분이 황색을 띠었으나 편차가 9.04%로 년도별 차이가 심하였다. 종과 횡의 크기는 3년 평균값이 각각 47.64mm 와 56.05mm 이었으며, 중량은 3년 평균값이 82.249으로 년도에 따라 많은 차이를 보였다 당도는 3년 평균치가 10.53$^{\circ}$Brix였고, 최고치는 17.2$^{\circ}$Brix, 최저치는 5.60$^{\circ}$Brix이었다. pH 및 적정산도의 3년 평균치는 각각 3.90 및 0.71%이었다. 지역별 품질특성을 보면 녹색도는 1.14-3.53%이었고. 종과 횡의 크기는 지역A가 각각 49.35mm 와 57.48mm로 가장 컸고, 지역I가 46.35mm 와 54.87mm로 가장 작았다. 중량 또한 크기에 비례하여 지역A가 87.619으로 가장 많이 나가고 지역I가 76.779으로 가장 적은 것으로 나타났다. 지역간의 당도는 10.27-10.75$^{\circ}$Brix 범위로 산지별 차이는 매우 미미하였다. pH는 3.78-3.96범위였고, 적정산도는 0.64-0.75%로 지역간에 약간의 차이를 보였다.

• 한국식품조리과학회지
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• 제24권6호
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• pp.748-756
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• 2008

This study was conducted to investigate the antioxidant activity of hot water extracts of wa-song (Orostachys japonicus A. Berger) dried using hot air (HWE) and frozen (FWE). Varying levels (0.1, 0.5 and 1.0 g/100 g) of HWE and FWE were added to soybean oil and lard. Chromaticity, anisidine value, acid value, peroxide value (POV) and thiobarbituric acid (TBA) value in oils were measured periodically during their storage for 28 days at $60^{\circ}C$. The chromaticity of edible oils showed a general increas with prolonged storage as well increasing levels of extracts. The anisidine value was not significantly increased during storage for 14 days, but was significantly increased after storage for 21 days in soybean oil and lard. The anisidine value of HWE on soybean oil was $12.60{\pm}0.92{\sim}13.82{\pm}0.68$ after storage for 28 days its value was lower than that of the control and buthylated hydroxy anisol (BHT). The antioxidant activity of HWE was found to be more effective than that of FWE. The acid value of HWE was significantly increased during storage from 14 to 21 days in soybean oil and from 7 to 14 days in lard. The antioxidant activity of FWE was particulary effective at the primary stage of the reaction system of lard storage. POV was highly increased during the storage periods between 7 and 14 days in soybean oil. The antioxidant activity in all the samples tested did not significantly increase after storage for 14 days, except when 0.1 g/ 100 g of FWE added to lard. TBA values of all the samples were lower than that of control and 0.02% BHT during their storage. The antioxidant activities of wa-song within the reaction system of oils were more effective in soybean oil than in lard.

• 대한수의학회지
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• 제30권2호
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• pp.157-162
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• 1990

The hematologic values were examined from 74 healthy mixed breed dogs in the area of Seoul. The results obtained are summarized as follows; 1. Mean${\pm}$SD values and ranges of red blood cell(RBC) count were $6.16{\pm}0.92{\times}10^6/{\mu}l$ and $4.40{\sim}8.62{\times}10^6/{\mu}l$, of hemoglobin(Hb) content $14.90{\pm}2.42g/100ml$ and 8.7~19.2g/100ml, of packed cell volume(PCV) $45.47{\pm}6.16ml/100ml$ and 30~57ml/100ml, of mean corpuscular volume (MCV) $74.80{\pm}6.83fl$ and 54.08~90.90fl, of mean corpuscular hemoglobin (MCH) $24.41{\pm}3.91pg$ and 14.19~32.97pg, of mean corpuscular hemoglobin concentration (MCHC) $32.07{\pm}3.24g/100ml$ and 22.23~39.76g/100ml, respectively. 2. The RBC count value in the age group of 3~4 years was higher (p<0.05) than the total RBC count value. The Hb content value in the age group of less than 6 months was lower (p<0.01) but in the age group of 1~2 years and the age group of 3~4 years were higher (p<0.05, p<0.01) than the total Hb content value. The PCV value in the age group of less than 6 months was lower (p<0.05) than the total PCV value. The MCHC values in the age group of 1~2 years and the age group of 3~4 years were higher (p<0.01, p<0.05) than the total MCHC value. 3. Mean${\pm}$SD values and ranges of white blood cell (WBC) count were $11.26{\pm}3.05{\times}10^3/{\mu}l$ and $6.30{\sim}18.4{\times}10^3/{\mu}l$, of band neutrophil $2.97{\pm}1.44%$ and 1~10%, of segmented neutrophil $62.81{\pm}4.92%$ and 42~70, of lymphocyte $30.55{\pm}5.69%$ and 17~50%, of monocyte $2.49{\pm}0.84%$ and 1~5%, of eosinophil $1.81{\pm}1.175$ and 1~8%, respectively. 4. The WBC count value in the age group of 7~12 months was lower (p<0.05) but in the age group of 3~4 years was higher (p<0.05) than the total WBC count value. The band neutrophil values in the age group of 1~2 years and the age group of 3~4 years were higher (p<0.05, p<0.01) than the total band neutrophil value.

• Journal of Biosystems Engineering
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• 제37권5호
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• pp.296-301
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• 2012

Purpose: Combustion and fuel qualities of the animal-fats biodiesel as a heating fuel for agricultural hot air heater were studied. Methods: Biodiesel (BD) was made from animal-fats by reacting with methanol and potassium hydroxide in the laboratory. The biodiesel made in the laboratory was tested for fuel and combustion qualities. Results: The kinematic viscosity and the calorific values of the biodiesels were measured. Kerosene based biodiesel, BD20 (K) showed 18 cSt at $-20^{\circ}C$. It seemed that BD100 was not suitable for a heating fuel under some temperature. As BD content increased, the calorific value decreased up to 40,000 J/g for BD100, while the calorific value of light oil was 45,567 J/g showing difference of 5,567 J/g, about 12% difference. Several different fuels including BD20 (biodiesel 20% + light oil 80%), BD50 (biodiesel 50% + light oil 50%), BD100 (biodiesel 100%), and light oil were tested for fuel combustion qualities for agricultural hot air heater, and their combustion performances were compared and analyzed. Flame dimensions of biodiesels and light oils were almost the same shape at the same combustion condition. Generally, the $CO_2$ amounts of BDs were greater than light oil. However, in this study the differences were minor, so there was no significant difference existed between the BDs combustion and light oil. Conclusions: It seemed that quality was good for heating oil for agricultural hot air heater because of showing no barriers for continuous combustion and proper exhaust gas temperature and $CO_2$ amount discharged. But, for fuel fluidity for higher BD content fuel could be a detrimental problem in situations where the outdoor temperature is lowered. As BD content increased, calorific value decreased up to 40,000 J/g for BD100. Calorific value difference between BD20 and light oil was about 1,360 J/g.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2019년도 추계학술대회
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• pp.88-88
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• 2019

Antioxidants are involved in the defense mechanism against the attack of free radicals. This study was carried out to determine the antioxidant activity of new variety of Glycyrrhiza cultivar radix, Wongam and Sinwongam. Dissolved freeze dried Wongam and Sinwongam extracts were filtered by $0.2{\mu}m$ filter and serially diluted at the concentrations of $10{\mu}g/mL$, $50{\mu}g/mL$, $100{\mu}g/mL$, $500{\mu}g/mL$, and $1000{\mu}g/mL$. The antioxidant potential was determined by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity, ABTS (2,2-azino-bis (3-rthylbenzthiazoline-6-sulfonic acid) diammonium salt) radical cation decolorization assay, nitrite radical scavenging assay, and ferric reducing antioxidant power (FRAP) assay. DPPH radical scavenging activities (i.e. the highest value $50.9{\pm}0.8%$ by Wongam and $82.6{\pm}1.1%$ by Sinwongam), ABTS radical scavenging activities (i.e. the highest value $88.1{\pm}1.8%$ by Wongam and $98.6{\pm}0.1%$ by Sinwongam), and nitrite radical scavenging activities (i.e. the highest value $87.3{\pm}1.6%$ by Wongam and $89.8{\pm}0.8%$ by Sinwongam) increased in a dose-dependent manner. In addition, ferric reducing power activities also increased in a dose-dependent manner. The FRAP value of Wongam and Sinwongam extracts were $0.72{\pm}0.03$ and $0.99{\pm}0.06$ compared to ascorbic acid, as a positive control, was $1.32{\pm}0.02$. These results suggested that Wongam and Sinwongam have beneficial effects as a potent antioxidant.

• 수산해양교육연구
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• 제16권2호
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• pp.156-162
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• 2004

This study aimed to know the effects of three marine training items, swimming, rowing and yachting on pulse, lung capacity and weight. The experiment subjects were composed of ten each item and were tested for six days. The experiment groups were strictly controlled in eating time, food amount, sleeping time and training intensity. The level of training intensity was 70~80% of maximal pulse rate. In the training intensity of each item the speed was decided after examination in advance, and the trainees kept the speed during training. The contents of training were made up through enough examination. The conclusions were as follows. 1. The effect on pulse in average value showed the decrease of 1.80round/min swimming, 1.51round/min rowing, and 0.11round/min yachting, but it was not admitted as significant difference. And in average value, swimming showed the decrease of 0.26round/m than rowing and 1.69round/m than yachting. 2. The effect on lung capacity showed the increase of 66.66cc swimming, 42.97cc rowing, and 4.22cc yachting, but there was no significant difference. And the average value of swimming showed the increase of 23.66cc than rowing, and 62.44cc than yachting. 3. The effect on weight showed decrease of 3.45g in swimming, 3.24g in rowing, and 2.07g in yachting. Swimming and rowing proved to have significant difference (p<.05). And in average value, swimming showed the decrease of 1.175g than rowing, and 1.38g than yachting. On the whole, in all experiment items, pulse, lung capacity and weight, the change was in the order of swimming, rowing and yachting after experiments.

• 한국수산과학회지
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• 제42권1호
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• pp.48-55
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• 2009

The gonad maturation and spawning of blue crab, Portunus trituberculatus (Miers, 1876) using samples caught by trammer net in the western coast of Korea from January to December. The gonadosomatic index (GSI) showed the highest value of 15.0 in June and lowest value of 1.29 in August. Hepatosomatic index (HSI) showed the lowest in the spawning season from June to July. Thereafter, from August the value started to increase to 5.77 in December, showing an adverse trend against GSI. In the histological studies of the female reproductive organ, the gonad filled with primary oocytes from January to February and secondary oocytes in May. The female gonads mature from June, and mature and immature groups could be distinguished from December to February or March. In August, female developed another cycle of gonad development, showing new primary oocytes in the gonads again. Some of female crabs had receptaculum filled with already active sperm cells in it from March to May. In the time of August to September, almost all the females had the sperm sacs in the receptaculum. From the result, the coupling period estimated from August to September. Total RNA and DNA values of the crabs were highest in May (2.51, $0.57{\mu}g/mg$). The DNA value remained unchanged except for the value in May ($0.09-0.13{\mu}g/mg$). while RNA value was lowest in January ($1.08{\mu}g/mg$). The RAN/DNA ratio was the lowest (6.23%) in May and highest (18.05%) in July. The value of correlations coefficient between body weight and fecundity of the crabs was higher that of between carapace width and fecundity.

• Asian Pacific Journal of Cancer Prevention
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• 제16권11호
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• pp.4583-4587
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• 2015

Background: The objectives of this study aimed to detect a CYP2B6 polymorphism in de novo cases of acute myeloid leukemia patients and identify any role in disease progression and outcome. Materials and Methods: DNA was isolated from peripheral blood of 82 newly diagnosed acute myeloid leukemia cases and the CYP2B6 G15631T gene polymorphism was assayed by PCR restriction fragment length polymorphism (PCR-RFLP). Results: The frequency of the GG genotype (wild type) was 48 (58.5%) and that of the mutant type T allele was 34 (41.9%). GT genotype heterozygous variants were found in 28 (34%), and TT genotype homozygous variants in 6 (7.3%) cases. We found no significant association between the CYP2B6 G15631T polymorphism and complete response (CR) (p-value=0.768), FAB classification (p-value=0.51), cytogenetic analysis (p-value=0.673), and overall survival (p-value=0.325). Also, there were no significant links with early toxic death (p-value=0.92) or progression-free survival (PFS) (p-value=0.245). Conclusions: Our results suggest that the CYP2B6 polymorphism has no role in disease progression, therapeutic outcome, patient free survival, early toxic death and overall survival in acute myeloid leukemia patients.

• 아시안잔디학회지
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• 제15권2호
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• pp.65-76
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• 2001

잔디(Zoysia japonica)의 1차 생산성과 광조건과의 상호작용을 평가하고 생리생태학적인 특성을 규명하기 위하여 일조시간을 조절한 상태에서 인공군락의 물질생산과 성장해석에 미치는 영향에 대하여 분석하였다. 그 결과의 요약은 다음과 같이 하였다. 1. RGR은 각 시험구공히 이식 후 20일경까지의 생장과정에서 높게 나타났고 이후 생장이 진행됨에 따라 낮아지는 경향을 보였다. 최고치는 Control에서 이식 후 20일과 20일사이의 생장과정에서 2.13g/g.10-days로 나타났으며 광조사 시간이 짧을수록 이식 후 초기생장부터 현저히 낮은 치를 보였으며 짧은 시간 자연광 조사가 RGR을 현저히 저하시키는 결과를 보였다. 2. NAR은 3시간 광조사구를 제외한 각구 공히이식 후 초기 생장과정에서 높은 치를 보였고, 이후 생장이 진행됨에 따라 낮은 치를 나타내었으며 최고치는 Control구에서 35g/$m^2$ 10days로 나타났다. 광조사 시간이 짧은수록 현저히 낮은 치를 보였으며 특히 3시간 광조사구에서는 초기생장부터 현저히 낮은 치를 나타내었고 변화도 감소하였다. LAI와는 역상관, RGR과는 정의 상관관계를 나타내었다. 3. LAR은 Control구와 각 일조시간 조절구에서는 광조사 시간이 짧을수록 이식초기부터 현저히 높은 LAR치를 보였고, 특히 3시간 광조사구에서는 현저히 높은 치를 보였으나 생장과정에 따른 증가율은 낮게 나타났다. LAR은 RGR과 NAR에 대하여 역의 상관관계를 나타내었다. 4. CGR은 각구 공히 이식 후 50일까지는 생장이 진행됨에 따라 증가하였고 이후의 생장과정에서는 낮아지는 경향을 보였으며 최고치는 1.56g/$ extrm{cm}^2$10days로 Control구에서 이식 후 60일경에 나타났다. LAI와는 정의 상관을 나타내었고 최적엽면적지수 Control구와 9시간, 7시간, 5시간 및 3시간, 일조시간 조절구에서는 각각 1.87, 1.12, 0.83, 0.18로 나타났다.

• 한국철도학회논문집
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• 제10권2호
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• pp.137-145
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• 2007

In traditional financial theory, the discount cash flow model(DCF or NPV) operates as the basic framework for most analyses. In doing valuation analysis, the conventional view is that the net present value(NPV) of a project is the measure of the present value of expected net cash flows. Thus, investing in a positive(negative) NPV project will increase(decrease) firm value. Recently, this framework has come under some fire for failing to consider the options of the managerial flexibilities. Real option valuation(ROV) considers the managerial flexibility to make ongoing decisions regarding the implementation of investment projects and the deployment of real assets. The appeal of the framework is natural given the high degree of uncertainty that firms face in their technology investment decisions. This paper suggests an algorithm for estimating volatility of logarithmic cash flow returns of real assets based on the Black-Sholes option pricing model, the binomial option pricing model, and the Monte Carlo simulation. This paper uses those models to obtain point estimates of real option value with the G7- HSR350X(high-speed train).