• The Journal of the Korea institute of electronic communication sciences
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• 제8권7호
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• pp.1111-1120
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• 2013

Zizania latifola has used for folk medicine in Korea. It is effective in treating skin trouble and sensitivity skins. The purpose of this study was to develop high valuable types of bath preparation of Zizania latifolia. The natural materials were manufactured by the mixed ratio of Zizania latifolia. Product was manufactured by the mixed ratio of Zizania latifolia and 3 natural materials. Green tea was highest in sensory evaluation as similar with Zizania latifolia. optimum condition of mixed ratio was adaptive 50% Houttuynia cordata, 30% green tea with 20% Artemisia vularis. Product's sensory evaluation was showed best in mixing 40% and Zizania latifolia extract 60%. There were optimal condition for manufacturing of cleansing. Therefore, The development of a bath preparation used by Zizania latifolia is very useful for manufacturing cleansing. We suggest that it help for improve skin trouble and make healthy skin.

• 한국전기화학회:학술대회논문집
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• 한국전기화학회 1999년도 제2회 총회 및 춘계학술발표회
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• pp.11-11
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• 1999

• Bulletin of the Korean Chemical Society
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• 제14권3호
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• pp.326-329
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• 1993

• Journal of the Korean Ceramic Society
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• 제24권4호
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• pp.357-363
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• 1987

This study consists of two powder preparation process. One is that the synthesized Forsterite at 1400$^{\circ}C$ mixed with Zirconia powder. Another, theoretical Forsterite composition mixed with Zirconia. These two Forsterite bodies were heat-treated at 1400$^{\circ}C$, 1450$^{\circ}C$. Synthesized Foresterite composition showed higher density, strength than Forsterite composite which was directly mixed with Zirconia KIC value was measured by Microhardness Indentation method. It shows the highest value when 15 weight percent Zirconia dispersed.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• 제19권1호
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• pp.141-160
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• 2021

Unit 1 of the Kori Nuclear Power Plant (NPP) and Unit 1 of the Wolsong NPP are being prepared for decommissioning; their decommissioning is expected to generate large amounts of intermediate-level, low-level, and very low level Waste. Mixed waste containing both radioactive and hazardous substances is expected to be produced. Nevertheless, laws and regulations, such as the Korean Nuclear Safety Act and Waste Management Act, do not define clear regulatory guidelines for mixed waste. However, the United States has strictly enforced regulations on mixed waste, focusing on the human health and environmental effects of its hazardous components. The U.S. Nuclear Regulatory Commission and the U.S. Department of Energy regulate the radioactive components of mixed waste under the Atomic Energy Act. The U.S. Environmental Protection Agency regulates the hazardous waste component of mixed waste under the Resource Conservation and Recovery Act. In this study, the laws, regulations, and authorities pertaining to mixed waste in the United States are reviewed. Through comparison and analysis with waste management laws and regulations in Korea, a treatment direction for mixed waste is suggested. Such a treatment for mixed waste will increase the efficiency of managing mixed waste when decommissioning NPPs in the near future.

• The Korean Journal of Food And Nutrition
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• 제12권1호
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• pp.77-84
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• 1999

The purpose of this study is to establish a rapid preparation method of Dongchimi-juice having favor-able flavor and high antibacterial activity against undesirable bacteria in Naengmyon-broth by using high antibacterial strains of lactic acid bacteria Lactobacillus homohiochii B21 and leuconostoc mesenteroid-es subsp. mesenteroides C16 as Dongchimi starter. When the two strains of lactic acid bacteria were used as starter mixed culture was better than single culture in acid production and antibacterial activity. When starter was not inoculated in Dongchimi fermentation the numbers of Gram negatives and colifor-ms were remarkably increased in early phase and antibacterial activity could scarcely be detected. But when starter was inoculated the numbers of Gram negatives and coliforms were sharply decreased from early phase and antibacterial ctivity was high. When Dongchimi was made with heat sterilized mat-erials and starter there were no Gram negatives and coliforms and antibacterial activity was high. The antibacterial activity of starter inoculated Dongchimi was maximum in 2 days of fermentation at 2$0^{\circ}C$ and was scarcely detected in six days. In consideration of coliform counts antibacterial activity and the flavor of Dongchimi the preparation method in which all materials were heat treated at 8$0^{\circ}C$ for 15 min-utes and inoculated with mixed starter of the two strains and fermented for 2 days at 2$0^{\circ}C$ was thoug-ht to be good.

• Journal of the Korean Applied Science and Technology
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• 제21권4호
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• pp.380-387
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• 2004

The preparation of $CaSO_4$ nanoparticle by vesicles formed spontaneously in cationic OTAC and anionic ADS mixed surfactant solution whose ratio is 0.3/0.7 is investigated. Added electrolytes for preparing nanoparticles reduce vesicle size about 200-300 nm comparing with that of pure vesicle whose size is 700-800 nm by DLS. The core of vesicles has 200 nm size and acts as nanoreactors which same size of monodisperse $CaSO_4$ nanopaticles are formed. Although $CaSO_4$ particles are formed at the outer of vesicles, they are very large and amorphous. The formed particles are identified with XRD analysis after separation due to coinciding with $CaSO_4$ particles.

• Journal of the Korean Ceramic Society
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• 제55권6호
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• pp.562-569
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• 2018

We propose an economic and facile method for the preparation of silica nanoparticles through a two-step process utilizing chlorosilane residues. Mixed chlorosilane residue was alcoholized with absolute ethanol as a first step to form tetraethoxysilane (TEOS). The TEOS was then utilized as a silicon source to synthesize silica nanoparticles in a sol-gel method. The alcoholysis process was designed and optimized utilizing the Taguchi experimental design method and the yield of TEOS was as high as 82.2% under optimal synthetic conditions. Similarly, the Taguchi method was also utilized to study the effects of synthesis factors on the particle size of silica nanoparticles. The results of statistical analysis indicate that the concentration of ammonia has a greater influence on particle size compared to the mass fractions of TEOS and polyethylene glycol (4.6% and 9.7%). The purity of the silica particles synthesized in our experiments is high, but the specific surface area and pore volume are small.

• Culinary science and hospitality research
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• 제9권3호
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• pp.102-113
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• 2003

This study was conducted to investigate Korean soy sauces and Japanese soy sauces for their flavor and taste when they are used for Teriyaki sauce preparation. The results showed the followings; 1. The panelists liked more naturally brewed soy sauce (NBS) than mixed (NBS + acid-hydrolyzed) soy sauces, especially S company's NBS, 501S and Japanese K company's koikuchi NBS were preferred sauces. 2. The preference of Chicken Teriyaki preparation were also appeared to be the highest with S company's NBS, 501S and Japanese K company's koikuchi NBS. Both of them are naturally brewed soy sauces. 3. Chicken Teriyaki Sauce's preference were also high that made from the highly preferred soy sauces, therefore, it would be the better selection with the highly preferred soy sauces for the Chicken Teriyaki preparation. 4. There were no significant difference in preferences between imported NBS and domestic NBS, so it would be good to use Korean NBS for Chicken Teriyaki preparation.

• YAKHAK HOEJI
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• 제33권4호
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• pp.241-245
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• 1989

A new application of high performance liquid chromatography for the determination of capsaicin and dihydrocapsaicin in cataplasma preparation was investigated. Optimum conditions for a good separation and detection were determined; 0.93 volt, acetonitrile: $H_3PO_4$ sol (pH 2.8), sample size; $7\;{\mu}l$. Recovery rates of capsaicin and dihydrocapsaicin from mixed artificial preparations were 99.9% and 98.4% respectively. Also reproducibility tests showed that the coefficient of variation was 1.59% for capsaicin and 1.14% for dihydrocapsaicin. There was no interference with cataplasma preparation containing thymol, dl-camphor and the commonly encountered excipients or additives such as gelatine, glycerine. This method was rapid, accurate and it gave higher sensitivity than other method.