• Food Science and Biotechnology
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• v.15 no.2
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• pp.264-269
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• 2006

Basic rheological data of dandelion leaf concentrates were determined to predict processing aptitude and usefulness of dandelion leaf concentrates as functional food materials. Hot water and 70% ethanol extracts of dandelion leaves were concentrated at 5, 20, and 50 Brix, and their static and dynamic viscosities, and Arrhenius plots were investigated. Most concentrated dandelion leaves extracted with hot water and 70% ethanol showed flow behaviors close to Newtonian fluid based on power law model evaluation. Apparent viscosity of concentrated dandelion leaves extracted with hot water and 70% ethanol decreased with increasing temperature. Yield stresses of concentrated dandelion leaves extracted with hot water and 70% ethanol by Herschel-Bulkley model application were 0.020-0.641 and 0.017-0.079 Pa, respectively. Activation energies of concentrated dandelion leaves extracted with hot water and 70% ethanol were $2.102-32.669{\times}10^3$ and $1.657-5.382{\times}10^3\;J/mol{\cdot}kg$ with increasing concentration, respectively. Loss modulus (G") predominated over storage modulus (G') at all applied frequencies, showing typical flow behavior of low molecular solution. G' and G" of concentrated dandelion leaves extracted with hot water slowly increased with increasing frequency compared to those of concentrated dandelion leaves extracted with 70% ethanol.

• Proceedings of the Korean Environmental Health Society Conference
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• 2004.12a
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• pp.8-11
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• 2004

Objective To know about hygienic condition of drinking water in rural area of Kunming. Methods Selected 4 counties with different economy to investigate. In every county, according to the proportion, 10 drinking water spots were selected by randomization of lift drinking water'. Results In 4 areas, surface water for drinking is 82.41%, under water is 17.59%. And concentrated supply is 83.02% by populated proportion, others are 16.98%. 40 specimens qualification rate is 47.50%, and in it concentrated supply is 87.50%, others are 19.05%. Conclusion Unhealthy drinking water exist in most testing counties. Mainly microorganism isn't qualified. Concentrated management in drinking water is batter than other ways.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.24 no.3
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• pp.129-133
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• 1998

We have studied a relationship between the pattern of complex modulus change versus internal phase volume ratio and the rheological consistency of concentrated W/O emulsions with Magnesium Sulfate in the range 0.0 to 0.5 wt% and with different oil polarities, respectively. The rheological consistency with time of concentrated W/O emulsion was checked using Fudoh Rheometer and the coalescence of deformed water droplets was examined using polarized light microscope(LEICA DMRP). To find the pattern of complex modulus change of the concentrated emulsions versus internal phase volume ratio, the effect of varying water phase volume fraction from 0.78 up to 0.85 on viscoelastic measurements was investigated using rotational rheometer (HAAKE Rheostress RS 50). The rheological consistency was mainly destroyed by the coalescence of the deformed water droplets. The greater the increase of complex modulus was, the less coalescence occurred and the more consistent the concentrated emulsions were. And the pattern of complex modulus increase versus volume ratio has been explained with the resistance to coalescence of the deformed interfacial film of water droplets in concentrated W/O emulsion.

• Proceedings of the SCSK Conference
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• 1999.10a
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• pp.65-74
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• 1999

We have studied the stability of W/O high internal phase emulsions(HIPE) containing water, cetyl dimethicone copolyol and oils varying magnesium sulfate in the range 0 to 0.5wt% and oil polarities, respectively. The rheological consistency was mainly destroyed by the coalescence of the deformed water droplets. The greater the increase of concentrated modulus was, the less coalescence occurred and the more consistent the concentrated emulsions were. The increasing pattern of complex modulus versus volume fraction has been explained with the resistance to coalescence of the deformed interfacial film of water droplets in concentrated W/O emulsion. The stability is dependent on: (i) the choice of the oil is important, the requirements coincide with the requirements for the formation of the rigid liquid crystalline phases :5; and (ii) addition of salts the aqueous phase opposes the instability due to coalescence:. Increasing the salt concentration increases the refractive index of the aqueous phase. It lowers the difference in the refractive index between the oil and aqueous phases. This decreases the attraction between the water domains, thus increasing the stability.

• Journal of Veterinary Clinics
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• v.18 no.2
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• pp.111-115
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• 2001

The water celery, Oenanthe javanica DC., is widely distributed in Korea and the other South East Asian countries. From ancient times, the water celery has widely been used for food or medicine. In herbal medicine, the water celery has a medical actions which are defervescence, diuresis, hypotensor, appetizer. Recently, studies on the water celery are briskly being conducted. For example, studies on the morphologic property and classifications of origin of the water celery, studies on the chemical constituents of the Water celery, studies on the bio activities of the water celery which contains flavonoids. However, there is not studies of hematological changes in dogs administrated the water celery until now. Consicontly, this study was conducted to observe the hematological changes in dogs administrated excessive amount of the water celery concentrated extract for a long period. In this studies, all dogs showed significantly decrease of the RBC, PCV, Hb and MCHC, and increase of the WBC, MCV, GSH and reticulocytes, but did not significantly change in the Met-Hb.

• Journal of the Korean Society for Marine Environment & Energy
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• v.18 no.1
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• pp.9-14
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• 2015

There are various ions in seawater. In order to use seawater as the drinking water, some elements are to be concentrated and other elements are to be removed. To obtain these characteristics using seawater, it is necessary to adjust seawater quality. Because calcium and magnesium are especially healthful to human bodies, it is required to concentrate these elements. In this study, the technology to obtain the hard water from seawater by electerodialysis was investigated. After concentrated water was produced using nanofiltration membranes, sodium chloride was eliminated from the concentrated water by electrodialysis. The hard water production from seawater was successfully achieved using electrodialysis in this study.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.31 no.2 s.51
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• pp.153-159
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• 2005

In this study, we investigated the application of an extract from Ephedra sinica which has been composed of traditional Korean medicine as a whitening ingredient. The extract of Ephedra sinica which was obtained from the mixture of methanol and water (1:1) the inhibitory effect of tyrosinase. Then, Ephedra sinica was extracted by two different solvents. One was water and the other was methylene chloride. Only, the water extract of Ephedra sinica showed the inhibitory effort of tyrosinase; the anti-tyrosinase activity with $0.2\%$ of the water extract was $60.6\%$. But the extract of Ephedra sinica in methylene chloride fraction showed little inhibitory effect on tyrosinase. The inhibitory effect of the concentrated water extract of Ephedra sinica was tested on L-DOPA auto-oxidation and melanin synthesis in B-16 melanoma. In L-DOPA auto-oxidation, $0.5\%$ of the concentrated water extract showed $87\%$ of inhibition of L-DOPA auto-oxidation and the $0.75\%$ concentrated Ephedra sinica extract in wafer fraction inhibited $98.8\%$ of that. In melanin synthesis of B-16 melanoma, the concentrated water effect of Ephedra sinica inhibited $70.2\%$ or $79.9\%$ of inhibitory effect on that at the concentration of $0.05\%$ or $0.075\%$, respectively. For verifying the skin whitening effect of the concentrated water extract of Ephedra sinica in vivo, we performed the clinical test of that. The research showed the significant skin whitening effect of a cream containing $0.5\%$ Ephedra sinica extract and the statistical analysis showed a significant difference (p < 0.05) between sample (containing $0.5\%$ Ephedra sinica extract) and placebo after 10 weeks.

• YAKHAK HOEJI
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• v.19 no.2
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• pp.96-100
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• 1975

2-Ethoxy-4-acetamidobenzoate (III) was synthesized by ethylation of N-formyl compound obtained with formylation of methyl 4-aminosalicylate and 2-ethoxy-4-acetamidobenzamide (VIII) was synthesized by ethylation of 4-acetamidosalicylamide (VII) formed by reacting methyl 4-acetamido-2-acetoxy benzoate with concentrated ammonia water under pressure. 2-Ethoxy-4-acetamido benzamide (VIII) was also synthesized by acetylation of 2-ethoxy-4-aminobenzamide (VI) obtained by pressure eraction of methyl 2-ethoxy-4-formylamido-benzoate (I) with concentrated ammonia water.

• Journal of Korean Society on Water Environment
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• v.27 no.4
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• pp.475-485
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• 2011

Lake Sihwa has a very unique watershed environment, surrounded by industrial, urban and rural catchment area with different land use. The first flush phenomenon was investigated in 3 catchment area. 4TG, representing the industrial area, shows rapid discharges of highly concentrated pollutants during the early stages of a storm and it is indicating a strong first flush effect. At AS, representing the urban area, the pollutant concentration reached its peak approximately 2~3 hours after the start of storm, which is a strong first flush effect did not appear. JJB and MS represent the rural areas, the PEMC analysis results suggest that highly concentrated pollutants were discharged during the middle and latter stages of a storm, instead of early pollutant runoff due to the effects of rainwater runoff.

• Journal of Environmental Impact Assessment
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• v.27 no.1
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• pp.17-32
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• 2018

The need for seawater desalination is increasing in terms of securing various water resources, but few studies are available as for the environmental impact of hypersaline concentrated water (brine) discharged from desalination plants. Domestic studies are concentrated mainly on toxicity evaluation that phytoplankton, zooplankton larvae and green algae (Ulva pertusa) are negatively affected by concentrated water. The mortality of Paralichthys olivaceus showed a linear relationship with increasing salinity, and Oryzias latipes died 100% at concentrations above 60 psu. Foreign studies included monitoring cases as well as toxicity evaluations. The number of species decreased around the area where the concentrated water discharged. The hypersaline concentrated water affects the pelagic and benthic organisms. However, the fishes escaped when exposed to salinity, and the pelagic and benthic organisms resistant to salinity survived the hypersaline environment. The salinity limit and distance from the outlet was presented as the regulatory standard for bine discharge. There were differences in regulatory standards among country and seawater desalination plants, and these regulatory standards have been strengthened recently. In particular, California Water Boards were revised to ensure that the maximum daily salinity concentration does not exceed 2 psu above the ambient salinity level within 100 m of the outlet.