• Title/Summary/Keyword: soluble

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The Electric Properties of Insulators Due to Mon-soluble Contaminant (불용성 오손물에 의한 절연물의 전기적 특성에 관한 연구)

  • Han, S.O.;Jang, T.I.;Kang, J.W.;Cho, S.B.
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.1785-1787
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    • 2000
  • This paper present the result of the investigation, the electric properties of insulators due to non-soluble contamination. In general, the humidity and the amount of soluble salts such as NaCl, $MgCl_2$ are the most dominant factor. Though the non-soluble do not distribute on conductivity of contaminant layer, that has the hygroscopic property. For this study, we make a mini-fog chamber with transparent acryl and the kaoline was used for non-soluble contaminant. The kaoline was applied with sprayer to get the specific ESDD and NSDD value, then the specimen was dried and installed horizontally. And to measure the leakage current a DAS system was developed with LabView. With the result, we could know the influence of non-soluble content and the relationship between NSDD and ESDD.

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Study on the Antimicrobial Activity of Thalictrum uchiyamai Nakai (Thalictrum uchiyamai Nakai의 항균작용에 관한 연구)

  • 이인란;이지영
    • YAKHAK HOEJI
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    • v.25 no.4
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    • pp.199-204
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    • 1981
  • The methanol extract of Thalictrum uchiyamai Nakai was fractionatedi nto four parts; (1) ether soluble nonphenolic fraction (2) phenolic tertiary bases fraction, (3) chloroform soluble tertiary bases fraction and (4) aqueous quaternary bases fraction. The fractions of this plant showed a total of twenty-four spots on the silica gel TLC. Ether soluble nonphenolic fraction and ether soluble phenolic fraction showed nine alkaloid spots respectively, chloroform soluble fraction showed three alkaloid spots and quaternary bases fraction showed three alkaloid spots. The antimicrobial activity of the four extracts was shown as follows; nonphenolic tertiary bases inhibited the growth of Micrococcus dutica at the concentration of $50\mu$g/ml, in phenolic tertiary bases $500\mu$g/ml concentration was inhibitory to Micrococcus dutica and to Staphyloccus aureus. In aqueous quaternary bases, $500\mu$g/ml concentration was inhibitory to Klebsiella pneumonae. Chloroform soluble tertiary fraction showed slight activity. All of bases showed reproducible activity against tested microorganisms.

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The Electric Properties of Insulators Due to Non-soluble Contaminant (불용성 오손물에 의한 절연물의 전기적 특성에 관한 연구)

  • 최남호;국연호;조성인;박강식;한상옥
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.07a
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    • pp.691-695
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    • 2000
  • This paper present the result of the investigation, the electric properties of insulators due to non-soluble contamination. In general, the humidity and the amount of soluble salts such as NaCl, MgCl$_2$are the most dominant factor. Though the non-soluble do not distribute on conductivity of contaminant layer, that has the hygroscopic property. For this study, we make a mini-fog chamber with transparent acryl and the kaoline was used for non-soluble contaminant. The kaoline was applied with sprayer to get the specific ESDD and NSDD value, then the specimen was dried and installed horizontally. And to measure the leakage current a DAS system was developed with LabView. With the result, we could know the influence of non-soluble content and the relationship between NSDD and ESDD.

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Effect of Ginseng Components (Ginsenosides and Fat Soluble Fraction) on Rat Liver Glucokinase Activity (쥐의 간 Glucokinase 활성에 미치는 인삼 성분의 영향)

  • 주충노;김선진
    • Journal of Ginseng Research
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    • v.18 no.1
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    • pp.17-24
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    • 1994
  • Effect of ginsenoside mixture, ginsenoside $Rb_1$,$Rb_2$,$Rg_1$ and the fat soluble fraction of the roots of Panax ginseng C.A. Meyer on the activity of glucokinase (GK) in vitro has been observed and found that GK activity was increased about 15c1c at the concentration of ginsenoside mixture and/or the fat soluble fraction being $10^{-7}$,$10^{-5}$%. It was also observed that glucose uptake by rat liver was increased in the presence of either ginsenoside mixture or the fat soluble fraction by perfusion technique. Ginsenoside mixture stimulated various enzymes related to glucose metabolism, however, both ginsenoside mixture and the fat soluble fraction did not stimulate GK activity as expected. Primary culture of liver cells showed that the ginsenoside mixture and the fat soluble fraction increased GK activity significantly and they stimulated the GK activity synergistically in the co-presence of insulin.

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ON SOME FINITE SOLUBLE GROUPS WITH ZERO DEFICIENCY

  • Jamali, A.
    • Bulletin of the Korean Mathematical Society
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    • v.35 no.3
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    • pp.465-471
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    • 1998
  • The class of finite solube groups with zero deficiency known to have soluble lenght five or six is small. In this paper we exhibit some classes of such goups.

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Reducing Fetal Contamination of Radiostronium by Water Soluble Chitosan

  • Kim, Young-Ho;Roh, Young-Bok;Kim, Kwang-Yoon;Bom, Hee-Seung;Kim, Jl-Yeul
    • Animal cells and systems
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    • v.1 no.2
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    • pp.337-340
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    • 1997
  • The purpose of this study is to evaluate whether water soluble chitosan, a natural nontoxic chelator, can reduce fetal contamination of radiostrontium in pregnant mice. Various forms of water soluble chitosans (10% or 1% powder, or 1% solution) were given to pregnant mice before or after contamination of 0.005 uCi/B.W(g) Sr-85. Transplacental transfer of Sr-85 to fetus was $6.8{\pm}2.7%$ of injected dose, when Sr-85 was administered at the 20th day of pregnancy. Fetal radioactivity was significantly reduced when mother mice were treated with water soluble chitosan before contamination of Sr-85. Water soluble chitosans of 10% or 1% powder, or 1% solution significantly reduced fetal retention of Sr-85 to $2.3{\pm}0.7%$, $2.7{\pm}0.8%$, and $2.0{\pm}0.9%$, respectively. However, fetal contamination was not reduced, when water soluble chitosans of 10% or 1% powder, or 1% solution were administered after maternal contamination of Sr-85. From these data we can conclude that water soluble chitosan could reduce fetal contamination of radiostrontium in pregnant mice, when given before the pregnant mice were exposed to radiostrontium.

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A Study on the Evaluation of the Water-soluble Chloride Content and Free-chloride Content in Blast Furnace Slag Cement Pastes (고로 슬래그 시멘트 페이스트 내 자유염화물량과 물가용성 염화물량 평가에 관한 연구)

  • Jo, Young-Kug;So, Seung-Young
    • Journal of the Korea Institute of Building Construction
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    • v.4 no.4
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    • pp.95-101
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    • 2004
  • The purpose of this paper is to compare free-chloride content with water-soluble chloride in blast furnace cement(BSC) paste. The content of free-chloride in cement paste measured by pore solution analysis and water-soluble chloride measured by ASTM. The result of this study are as follows: 1. The concentration of chloride ion in pore solution of BSC-solidified matrix is almost as low as 43-71% compared to that of OPC-solidified matrix containing the same chloride content in cement paste. 2. The binding capacity of specimens, OPC Pl-P5, are 93.5-77%, but the binding capacity of specimens, BSC Pl-P5 are 97.1-86.1%, which is to be as high as 2-9.1% compared to OPC containing the same chloride content. 3. In terms of water-soluble chloride content in BSC paste are 15-31.7 percent of chloride addition but free-chloride content in pore solution are 2.9-13.9 percent of chloride addition. The free-chloride content in pore solution is 19.3-43.8 percent lower for the water-soluble chloride content in cement paste.

The Stability of Water-soluble and Fat-soluble vitamin in milk by Heat treatments (수용성비타민과 지용성비타민의 가열에 대한 안정성)

  • 허정윤;황인경
    • Korean journal of food and cookery science
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    • v.18 no.5
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    • pp.487-494
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    • 2002
  • This study was conducted to investigate the thermal stability of water-soluble and fat-soluble vitamins dissolved in water and milk by various heat treatments. Vitamin samples were prepared by dissolving them in water and milk at various concentrations, and were heat treated for 30 min at 65$\^{C}$, 15 sec at 85$\^{C}$, 5 sec at 100$\^{C}$, 121$\^{C}$ at 15 min, the levels of residual vitamin were measured by using HPLC. Milk samples were fortified with vitamins before and after UHT treatment. As heating over 100$\^{C}$, riboflavin in water were destructed more than 92% but fortified in milk showed less than 20% destruction, suggesting that riboflavin was protected by milk components. Also retinol heated ever 100$\^{C}$ was more stable in milk than in water. L-Ascorbic acid and cholecalciferol(D$_3$) showed a similar destruction rate in water and in fortified milk. L-ascorbic acid was easily destructed by UHT treatment. Destruction of thiamin and tocopherol was increased in fortified milk. Among tour capsulated water-soluble vitamins, L-ascorbic acid was much more stable compared with powder form. Nicotinic acid and folic acid either in capsule or powder form showed a slight destruction by heat treatment. The results suggested that the fortification of unstable vitamins such as L-ascorbic acid, thiamin, tocopherol and cholecalciferol(D$_3$) should be made in milk after heat treatment.

Analysis of dietary insoluble and soluble fiber contents in school meal

  • Shin, Dong-Soon
    • Nutrition Research and Practice
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    • v.6 no.1
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    • pp.28-34
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    • 2012
  • The objective of this study was to estimate the contents of dietary insoluble and soluble fiber in school meal. Samples of the school meals were collected from May to June in 2008. Three elementary schools and three middle schools around Masan area were selected for analysis. Dietary soluble and insoluble fibers in the school meals were analyzed directly by the AOAC method. From the initial experiment phase, we used cellulose and pectin as a standard of dietary fiber, and average recovery rate of insoluble fiber and soluble fiber was calculated. The recovery rate was observed, the cellulose $109.7{\pm}11.7%$ (range 90~150%) and pectin $77.8{\pm}10.8%$ (range 64.7~96.7%), respectively. The amounts of insoluble fiber and soluble fiber were analyzed in the total of 66 dishes, which included 7 kinds of cooked rice (bab) made with some cereal products and vegetables, 19 kinds of soup (guk) made with meats or vegetables, 11 kinds of kimchi, 21 kinds of entr$\acute{e}$es or side dishes, and 8 special dishes. Conclusively the school meal, per serving size, would provide above 75% KDRI of total dietary fibers through mainly soups and special menu, with the exception to fruits. In addition, it might be expected that children could consume more soluble fiber from the meals with the special dishes than from the regular ones.

Predicting the Soluble Solids of Apples by Near Infrared Spectroscopy (I) - Multiple Linear Regression Models - (근적외선을 이용한 사과의 당도예측 (I) - 다중회귀모델 -)

  • ;W. R. Hruschka;J. A. Abbott;;B. S. Park
    • Journal of Biosystems Engineering
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    • v.23 no.6
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    • pp.561-570
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    • 1998
  • The MLR(Multiple Linear Regression) models to estimate soluble solids content non-destructively were presented to make a selection of optimal photosensor utilized to measure the soluble solids content of apples. Visible and NIR absorbance in the 400 to 2498 nanometer(nm) wavelength region, soluble solids content(sugar content), hardness, and weight were measured for 400 apples(gala). Spectrophotometer with fiber optic probe was utilized for spectrum measurement and digital refractometer was used for soluble solids content. Correlation between absorbance spectrum and soluble solids content was analyzed to pick out the optimal wavelengths and to develop corresponding prediction model by means of MLR. For the coefficient of determination($R^2$) to be over 0.92, the MLR models out of the original absorbance were built based on 7 wavelengths of 992, 904, 1096, 1032, 880, 824, 1048nm, and the ones of the second derivative absorbance based on 5 wavelengths of 784, 1056, 992, 808, 872nm. The best model of the second derivative absorbance spectrum had $R^2$=0.91, bias= -0.02bx, SEP=0.28bx for unknown samples.

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