• 한국양식학회지
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• 제12권3호
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• pp.213-220
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• 1999

This study was performed to investigate the effects of water temperature and stocking density and rotifer density on the mass production of larval red marbled rockfish, Sebastiscus tertius. Total length of the marbled rockfish larva grown in $23^{\circ}C$ of water temperature were 10.80mm, which was the best, while those grown in $29^{\circ}C$ of water temperature were 6.28mm, which was the lowest. The survival rates of red marbled rockfish larvae grown in $20^{\circ}C$ and $23^{\circ}C$ were 24.0% and 18.5%, respectively. However, the survival rate of red marbled rockfish larvae grown in $26^{\circ}C$ was $7^{\circ}C$ and no larvae survived in $29^{\circ}C$. The total length of red marvled rockfish larva stocked at the density of 5 and 10 larvaper liter of water were high, which were 11.52 mm and 11.22 mm, respectively, but those stocked at the density of 30 larva per liter of water were 7.55mm, which was the lowest. The survival rate of red marbled rockfish larva stocked at the density of 2.5 larva per liter of water was 52.0%, which was the best, but the lowest, 18.0% for the red marbled rockfish larva stocked at the density of 30 larva per liter. There was a trend toward decrease in survival rate of red marbled rockfish larva as their stocking density increased. The survival rates of red marbled rockfish larva fed rotifers at the density of 10 and 5 individuals per ml were high, 48.5% and 48.0%, and their total lengths were 11.92 and 11.89mm, respectively, which grew relatively fast. The survival rate and the total length of red marbled rockfish larva fed rotifers at the density of 30 individuals per ml were the lowest, which were 8.40mm and 21.5%, respectively. Also, red marbled rockfish larva fed rotifers at the density of more than 20 individuals per ml achieved poor survival and growth. These results indicated that the proper conditions for the mass production of larval red marbled rockfish were $23^{\circ}C$ of water temperature, fish larva stocking density of 5 to 10 larva per liter of water and rotifers density of 5 to 10 individuals per ml as live feed.

• Journal of Ginseng Research
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• 제24권1호
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• pp.23-28
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• 2000

덱스트린/에탄올/물(1/1/l, w/w/w)의 혼합용액에 라우릴황산나트륨 0.5%(w/w) 및 홍삼 엑기스 20%(w/w)를 첨가한 조성을 가지고 분무건조하여 제조한 분말 홍삼주는 최대 에탄올(31.17$\pm$ 1.33%(w/w)) 및 ginsenoside Rbl(243.0$\pm$ 7.0$\mu\textrm{g}$/g)이 봉입된 미립구로서 용해 및 복용감이 우수한 새로운 홍삼 엑기스의 제형으로서의 가능성이 있다.

• 한국식품영양학회지
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• 제12권5호
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• pp.447-454
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• 1999

Ginseng-vinegars were produced by the fermentation of 5% ethanol solution contained ginseng, red ginseng, ginseng marc and red ginseng marc using Acetobacter aceti 3281 for 26 days at 35$^{\circ}C$. The ginseng and red ginseng vinegar contained 0.236mg/ml of total sugar 0.236mg/ml of reducing sugar and 0.05% of ethanol and 1.005 of specific gravity 8,58CFU of viable cell count 3,24 of pH and 5.11% of acidity. Whereas the vinegars produced using the water-extracted red ginseng marc and the ethanol-extracted red ginseng marc were consisted of total sugar was 1.27mg/ml and 1.60mg/ml reducing sugar was 0.077mg/ml and 0.725mg/ml specific gravity was 1.001 and 1.004 the number of viable cells was 8.51CFU/ml and 8.1CFU/ml pH was 2.81 and 2.89 acidity was 5.18% and 5.32% respectvely ethanol concentration was 0.05% in both cases. In five-grade scoring test of sensory evaluation, it was estimated favorable that each vinegar made by were-extracted red ginseng marc, ethanol-extracted red ginseng marc ginseng and red ginseng ginseng from 0.5 to 32% of water-and ethanol-extract red ginseng was extracted with 10% white vinegar for 30 days. The best sensory vinegars were obtained that ginseng of 0.4~1.6% above red glnsend of 0.8% water-extracted red ginseng marc of 0.8~1.6% and ethanol-extracted red ginseng marc of 0.4~1.6% added in 10% white vinegar respectively.

• Journal of Electrochemical Science and Technology
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• 제10권3호
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• pp.302-312
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• 2019

The voltage produced from the salinity gradient in reverse electrodialysis (RED) increases proportionally with the number of cell pairs of alternating cation and anion exchange membranes. Large-scale RED systems consisting of hundreds of cell pairs exhibit high voltage of more than 10 V, which is sufficient to utilize water electrolysis as the electrode reaction even though there is no specific strategy for minimizing the overpotential of water electrolysis. Moreover, hydrogen gas can be simultaneously obtained as surplus energy from the electrochemical reduction of water at the cathode if the RED system is equipped with proper venting and collecting facilities. Therefore, RED-driven water electrolysis system can be a promising solution not only for sustainable electric power but also for eco-friendly hydrogen production with high purity without $CO_2$ emission. The RED system in this study includes a high membrane voltage from more than 50 cells, neutral-pH water as the electrolyte, and an artificial NaCl solution as the feed water, which are more universal, economical, and eco-friendly conditions than previous studies on RED with hydrogen production. We measure the amount of hydrogen produced at maximum power of the RED system using a batch-type electrode chamber with a gas bag and evaluate the interrelation between the electric power and hydrogen energy with varied cell pairs. A hydrogen production rate of $1.1{\times}10^{-4}mol\;cm^{-2}h^{-1}$ is obtained, which is larger than previously reported values for RED system with simultaneous hydrogen production.

• 대한원격탐사학회지
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• 제28권5호
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• pp.531-548
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• 2012

남해안에서 발생한 Cochlodinium polykrikoides 적조를 적조인 경우와 아닌 경우(satellite high chlorophyll water)로 부터 분류하기 위해서, 본 연구는 Son et al.(2011)의 spectral classification 방법을 세계 최초 해색위성인 GOCI 파장에 맞도록 개선했다. C. polykrikoides 적조인 경우와 아닌 경우는 네 가지 단계를 거쳐서 분리했다. 첫 번째 단계는 적조 발생 가능지역으로 555nm와 680nm (fluorescence peak)에서 피크를 보이는 지역을 선택했다. 두 번째 단계는 적조 발생 가능 지역 중에서 용존유기물/부유물질 함량이 높은 지역과 낮은 지역을 구분했다. 세 번째와 네 번째 단계는 blue-to-green 밴드비를 이용하여 적조 발생 지역과 아닌 지역을 구분했다. 네 가지 단계를 적용한 결과 적조의 스펙트럼은 증가된 식물성 플랑크톤과 용존유기물(부유물질)의 흡광 때문에 짧은 파장에서는 낮은 기울기를 보이고, 증가된 부유물질 때문에 긴 파장에서는 상대적으로 증가된 기울기를 나타냈다. GOCI를 위해 개선된 spectral classification 방법은 C. polykrikoides 적조인 경우와 적조가 아닌 경우에 대해서 높은 user accuracy를 보이고, 다양한 해양환경에서 신뢰성 있는 적조 탐지 가능성을 보이고 클로로필 농도를 이용한 방법이나 기존의 다른 적조 탐지 방법보다 좋은 결과를 보였다. 남해안 C. polykrikoides 적조는 2012년 7월 말에서 8월 초까지 나로도와 통영 부근 해상에서 탐지 되었고, 2012년 8월 중순에는 완도에서 거제도까지 남해안 전체에 걸쳐 발생했다.

• 한국조리학회지
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• 제14권1호
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• pp.170-180
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• 2008

This study was performed to find out the quality characteristics of Noodles by addition of red ginseng powder(0, 2, 4, 6, 8%). The quality characteristics of the sample were estimated in terms of general com-position, color difference, cookery characteristics(water absorption, volume of cooked noodles, turbidity), texture profile analysis and sensory evaluation. The protein, lipid, ash, Na and water binding capacity did not show significant difference in any of the groups. In red ginseng powder added groups, moisture contents, a and b values significantly increased but L value considerably decreased(p<0.05). The weight, volume, water absorption of the cooked noodles and turbidity of 8% of red ginseng powder added group were significantly higher than the control group(p<0.05). In texture profile analysis, adhesiveness, gumminess, hardness and springiness significantly decreased(p<0.05) with more red ginseng powder added. Chewiness and cohesiveness significantly(p<0.05) increased with the 4, 6, 8% of red ginseng powder added. In sensory evaluation, surface color was very good in the 8% red ginseng powder added group while taste and flavor of red ginseng were very good except the 8% red ginseng powder added group(p<0.05). Appearance and overall quality were highest in the 4% red ginseng powder added group(p<0.05). Therefore, noodles containing 4% red ginseng powder were most preferable.

• Bulletin of the Korean Chemical Society
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• 제35권6호
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• pp.1732-1736
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• 2014

Red fluorescent organic nanopaticles (FONs) based on a diarylacrylonitrile derivative conjugated molecule were facilely prepared by surfactant modification. Such red FONs showed excellent water solubility and biocompatibility, making them promising for cell imaging applications.

• 생약학회지
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• 제38권1호
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• pp.56-61
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• 2007

This study was carried out to investigate the optimum conditions for extraction of acidic polysaccharides from red ginseng marc produced by manufacturing alcoholic extract from red ginseng. Method of carbazole-sulfuric acid was applied to determine the amount of acidic polysaccharides in red ginseng marc. The amounts of acidic polysaccharides in water extract of red ginseng marc were increased with increasing extraction temperature. The contents of acidic polysaccharides were not significantly different despite of the extraction time increasing from 6 hours to 48 hours. The contents of starch in water-extract of red ginseng marc were increased with increasing extraction temperature. The starch amounts in water extract of red ginseng marc extracted for 48 hours were increased. The yields of polysaccharide precipitated from water-extract of red ginseng marc were increased with increasing extraction temperature. The hydration rate of acidic polysaccharides and starch from water-extract of red ginseng marc were decreased with increasing extraction temperature. The contents of starch were not significantly different despite of the extraction time increasing from 6 hours to 48 hours at $8^{\circ}C$. However, the rehydration rate of acidic polysaccharide for 48 hours were decreased at $8^{\circ}C$. The rehydration rate of acidic polysaccharide and starch extracted from 6 hours to 24 hours at $25^{\circ}C$ were not significantly different, but those extracted for 48 hours were increased. From the above results, we suggest that by altering the extraction conditions in red ginseng marc it is possible to develop optimum conditions for extraction that modulate the proportions of acidic polysaccharide and starch.

• 대한환경공학회지
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• 제36권9호
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• pp.624-628
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• 2014

최근 해수와 담수의 염분농도차를 이용하여 발전하는 역전기투석(reverse electrodialysis, RED)은 잠재량이 크고 지속적 전력생산이 가능한 친환경적이며 미래지향적 신재생에너지로 인식되어 연구가 활발히 진행되고 있다. 이러한 RED 기술의 상용화를 위해서는 최적화된 운전조건을 찾는 것이 중요하며 특히, 스택 내부의 저항을 최소화하는 연구가 절실한 상황이다. 본 연구에서는 RED의 중요한 운전조건인 해수와 담수의 공급유량이 내부저항에 미치는 영향을 조사하고, 해수와 담수의 유량비에 따른 내부저항과 전력밀도의 관계를 고찰하여 최적의 운전조건을 실험적으로 파악하였다. 그 결과 전체유량 80 mL/min에서 최적의 해수/담수 유량비는 1.7이었으며, 이때 전력밀도는 $1.30W/m^2$을 얻을 수 있었다.

• 한국식물병리학회지
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• 제14권5호
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• pp.440-444
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• 1998

This experiment was carried out to elucidate the effect of electrolytic water on the growth and infection of Phytophthora capsici. Zoospores of P. capsici did not grow on potato dextrose agar when the pathogen was cultured after suspended in electrolytifc water (pH 2.5, 3.0, 3,5) with HCI solution. When the 100 ml of electrolytic water (pH 2.5, 3.0, 3.5) was irrigated on the red pepper plants that had been inoculated by P. capsici (103 zoospores/ml), the red pepper plants were not infected but irrigated with sterilized water (pH 6.5) the red pepper plants were infected. With this result, it could be concluded that the good sterilization effect on P. capsici might be obtained by applying electrolytic water.