• 제목/요약/키워드: high Tg

검색결과 895건 처리시간 0.025초

익모초(益母草)와 충울자(茺蔚子)의 고지혈증(高脂血症) 억제 효능 (Effects of Leonuri Herba and Leonuri Semen on Hypercholesterolemia)

  • 김선제;한효상;이영종
    • 대한본초학회지
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    • 제25권3호
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    • pp.73-80
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    • 2010
  • Objectives:The present study purposed to evaluate the effects of Leonuri Herba and Leonuri Semen on hypercholesterolemia and provide data for the appropriate clinical application of Leonuri Herba and Leonuri Semen. Methods:We applied the water extracts of Leonuri Herba and Leonuri Semen to rats with hypercholesterolemia induced by high-cholesteroldiet, and examined their effects. Results:The levels of the total cholesterol and LDL-cholesterol were reduced by the uptake of Leonuri Herba to rats with hypercholesterolemia, but there was no significant effect on the level of TG(triglyceride), HDLc(HDL-cholesterol), FFA(free fatty acid), and Fc(free cholesterol), while the amount of AST and ALT was inhibited. The application of Leonuri Semen brought about the decrease of the total cholesterol and Fc, the increase of TG, HDLc, and FFA, and the significant decrease of the activation of AST. Leonuri Herba had only a weak effect on hypercholesterolemia, while Leonuri Semen had a strong effect on the reduction of the symptoms of hypercholesterolemia. Conclusion:Based on the fact that Leonuri Herba had only a weak effect on hypercholesterolemia, while Leonuri Semen had a strong effect on the reduction of the symptoms of hypercholesterolemia, it is concluded that Leonuri Semen is a better solution for hypercholesterolemia than Leonuri Herba.

$P_2O_5$-ZnO-RO 유리계의 고 투과율 특성을 위한 프릿 크기 및 소성조건의 변화 (Variation of Frit Size and Firing Conditions for High Transmittance in $P_2O_5$-ZnO-RO Glass System)

  • 차명룡;전재삼;정병해;김형순
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 2003년도 추계학술발표강연 및 논문개요집
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    • pp.197-197
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    • 2003
  • 현재 PDP(Plasma Display Panel) 투명유전체층은 PbO 계열을 사용하고 있으나 제조공정 시 다량의 중금속 페기물이 방출됨에 따라 환경오염을 야기시킴으로 무연조성이며 저온소성이 가능한 저융점유리인 인산염계 유리에 대한 열적, 화학적, 광학적 특성에 대해 체계적인 연구가 진행되었다. 광학적 특성을 위 한 승온속도, 소성온도, 유지시간의 변화 그리고, 프릿 입도에 따른 광 투광성, 기포의 형성, 그리고 기포의 분포특성을 연구하였다. 열적특성은 DTA와 TMA를 이용하여 유리전이점(Tg) 및 선팽창계수(CTE)와 Littleton softning point (Ts)가 측정되었다. 광학적특성은 스크린프린팅법으로 후막 제조 후 소성하여 UV-visible spectrometer을 이용하여 300~800nm영역에서 투광성을 측정하였으며, FEG-SEM, AFM을 이용해 표면을 관찰하였다. 결과로써, Tg는 440-46$0^{\circ}C$ 와 CTE는 7~8.5$\times$$10^{-6}$K값을 보였고 높은 화학적 내구성과 60-80%의 광투과율을 나타내었다. 프릿의 미세화, 숭온속도의 감소는 기포의 생성을 줄이는데 효과를 보였으며, 그 결과 양호한 광투과율을 얻을 수 있었다. 이러한 결과에 따르면, P$_2$O$_{5}$-ZnO-RO 조성은 PDP용 투명유전체 조성으로써 기존의 PbO계열을 대체할만한 새로운 조성으로 고려된다.

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Wood-wool board로 활용(活用)을 위한 폐목재(廢木材)의 열분해(熱分解) 및 파쇄특성(破碎特性) (Pyrolysis and Breaking Characteristics of Waste Wood for Wood-wool Board)

  • 박상민;김재우;심기섭;박상숙
    • 자원리싸이클링
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    • 제19권2호
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    • pp.19-27
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    • 2010
  • 폐목재를 고온고압장치를 사용하여 나무의 결대로 파쇄 후 건축재료로의 활용을 위하여 등급별로 분류하여 열분해 및 파쇄특성을 알아보았다. 그 결과, TG/DTA 그래프에서 $250^{\circ}C$에서 급격한 무게감소가 발생하는데, 건축재료로의 활용을 위해서는 $250^{\circ}C$이하의 온도에서 처리가 되어야 한다. 고압파쇄 실험결과 활엽수보다는 침엽수가 나무의 결대로 잘 찢어짐을 알 수 있었으며, 그 중 편백나무(W-7)가 가장 양호한 결과를 나타내었다. 다양한 조건의 실험결과, 온도는 $200^{\circ}C$, 압력은3MPa이 최적조건임을 확인할 수 있었다.

Lactic Acid Bacteria Increases Hypolipidemic Effect of Crocin Isolated from Fructus of Gardenia jasminoides

  • Lee In-Ah;Min Sung-Won;Kim Dong-Hyun
    • Journal of Microbiology and Biotechnology
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    • 제16권7호
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    • pp.1084-1089
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    • 2006
  • The fructus of Gardenia jasminoides Ellis (GF) has been widely used as a natural colorant in Asian countries, and also as a Chinese traditional medicine for its homeostatic, antiphlogistic, analgesic, and antipyretic effects. In the present study, its main component, crocin, was fermented with lactic acid bacteria (LAB) and their antihyperlipidemic activity was measured. The GF extract, fermented GF (F-GF), crocin, and fermented crocin (F-crocin) significantly inhibited the increase of serum triglyceride (TG) level in corn oil feeding-induced triglyceridemic mice, as well as that of serum TG and total and LDL cholesterol levels in Triton WR-1339-induced hyperlipidemic mice. These agents also showed hypolipidemic activity in hyperlipidemic mice induced by high fat diet for 5 weeks. F-GF and F-crocin exhibited more potent hyperlipidemic effects than GF and crocin. The results suggest that the hypolipidemic effect of GF and crocin can be synergistically activated by LAB, and that F-GF and F-crocin may improve hyperlipidemia in clinic, compared with GF and crocin.

Effects of excessive dietary methionine on oxidative stress and dyslipidemia in chronic ethanol-treated rats

  • Kim, Seon-Young;Kim, Hyewon;Min, Hyesun
    • Nutrition Research and Practice
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    • 제9권2호
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    • pp.144-149
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    • 2015
  • BACKGROUND/OBJECTIVE: The aim of this study was to examine the effect of high dietary methionine (Met) consumption on plasma and hepatic oxidative stress and dyslipidemia in chronic ethanol fed rats. MATERIALS/METHODS: Male Wistar rats were fed control or ethanol-containing liquid diets supplemented without (E group) or with DL-Met at 0.6% (EM1 group) or 0.8% (EM2 group) for five weeks. Plasma aminothiols, lipids, malondialdehyde (MDA), alanine aminotransferase (ALT), and aspartate aminotransferase were measured. Hepatic folate, S-adenosylmethionine (SAM), and S-adenosylhomocysteine (SAH) were measured. RESULTS: DL-Met supplementation was found to increase plasma levels of homocysteine (Hcy), triglyceride (TG), total cholesterol (TC), and MDA compared to rats fed ethanol alone and decrease plasma ALT. However, DL-Met supplementation did not significantly change plasma levels of HDL-cholesterol, cysteine, cysteinylglycine, and glutathione. In addition, DL-Met supplementation increased hepatic levels of folate, SAM, SAH, and SAM:SAH ratio. Our data showed that DL-Met supplementation can increase plasma oxidative stress and atherogenic effects by elevating plasma Hcy, TG, and TC in ethanol-fed rats. CONCLUSION: The present results demonstrate that Met supplementation increases plasma oxidative stress and atherogenic effects by inducing dyslipidemia and hyperhomocysteinemia in ethanol-fed rats.

LCD용 컬러필터 보호막 (Thin layer(Overcoat) for TFT-LCD color filter)

  • 김명구;박주현;임영택
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 추계학술대회 논문집 Vol.19
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    • pp.273-273
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    • 2006
  • Over the past years, a large number of acrylate polymers have been developed and the overcoat thin layer containing acrylate polymers have been used for TFT-LCD color filter. As forming thin layer using acrylate polymers, the existing acrylate polymers have some problems such as low hardness by low Tg temperature, coating uniformity and solubility in organic solvent. To solve these problems, we synthesized new polymer(Scheme.), containing olefin monomer, which has high Tg temperature, good coating uniformity and good solubility in organic solvent. The overcoat thin layer containing new polymer resulted in good coating uniformity, stain, spot, scratch, heat resistance, DOP(Degree Of Planarization) on RGB glass, transparency, hardness, adhesion, anti-chemicals(anti-acid, anti-base, anti-organic solvent), insulation and anti-humidity. Scheme. The structure of new polymer X = Olefin monomer contains ketone, ester, hydroxy, ether, halogen, nitrile, alkoxy, phenyl functional group $R_1$ and $R_2$= H or $CH_3$. Ratio=0<[1/(1+m+n)]<0.7,0.1[$\leq$[n/(1+m+n)]<0.5.

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우리춤 체조가 여성노인의 신체적 건강, 자기효능감 및 스트레스에 미치는 영향 (Effects of Korean Traditional Dance Exercise of Physical Health, Self-efficacy & Stress in elderly women)

  • 김란;박인순;박명희
    • 환경위생공학
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    • 제24권4호
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    • pp.69-79
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    • 2009
  • The purpose of this study was to identify the effect of Korean traditional dance exercise on physical health (BMI; body mass index, BP; blood pressure, VC; vital capacity, TC; total cholesterol, HDL; high-density lipoprotein, TG; triglyceride), self-efficacy and stress in elderly women. A quasi-experimental research design(one group pretest and posttest) was used for this study. Participants were recruited in a metropolitan city and a total of 43 community dwelling elderly women completed the 12-week Korean traditional dance exercise program. Descriptive statistics and paired t-tests were used in the data analysis by SPSS/WIN 12.0. After the Korean traditional dance exercise program there was a significant difference in BMI, VC, TC, HDL, stress and self-efficacy. There were, however, no significant changes in BP, and TG level after completing this program. This study suggests that Korean traditional dance exercise may be one of the effective nursing interventions for elderly women.

노인 당뇨병환자의 신체활동량과 생화학적 변수들과의 관계 (Relationship of Daily Activity and Biochemical Variables in the Elderly with Diabetes Mellitus)

  • 성기월
    • 대한간호학회지
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    • 제41권2호
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    • pp.182-190
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    • 2011
  • Purpose: This study was done to identify correlates and variables predicting daily activity among elders with Diabetes Mellitus (DM). Methods: Seventy-six elders registered in the Department of Endocrine Medicine at C university hospital participated in data collection. Data on daily activity and biochemical variables were collected via actigraph accelerator (Actical) and blood tests between September 2009 and July 2010. Data analysis was done using SPSS WIN 15.0 program and included one-way ANOVA, independent t-test, Pearson correlation coefficients, and stepwise multiple regression. Results: This study showed a positive correlation between daily activity and High Density Lipoprotein Cholesterol (HDL-C) and a negative correlation among Total Cholesterol (TC), Triglyceride (TG), and Low Density Lipoprotein Cholesterol (LDL-C). The variables predicting daily activity were frequency of exercise, HDL-C, and TC. These factors accounted for 40.0% of the variance of daily activity in elders with DM. Conclusion: The results indicate that it is necessary to improve daily activity to reduce Fasting Blood Glucose (FBG), TC, and TG in elders with DM.

청년층 성인남성에서 흡연, 음주, 비만지표가 심뇌혈관계 위험인자에 미치는 영향 (Influencing Factors on Cardio-cerebrovascular Disease Risk Factors in Young Men: Focusing on Obesity Indices)

  • 김철규;이시향;차선경
    • Journal of Korean Biological Nursing Science
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    • 제19권1호
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    • pp.1-10
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    • 2017
  • Purpose: The purpose of this study was to investigate influences of drinking, smoking, and obesity indices on cardio-cerebrovascular disease risk factors in Korean young men. Methods: The subjects were 234 young men, aged 20 to 39 years. Body mass index (BMI), percent body fat (PBF), body fat mass (kg), and waist hip ratio (WHR) were measured as obesity indices. Systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting blood sugar (FBS), total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were measured as cardio-cerebrovascular disease risk factors. The data were analyzed by t-test, ANOVA, Pearson's correlation coefficient, and multiple regression analysis using SAS 9.4. Results: Statistically significant factors were BMI for SEP; age, degree of drinking, body fat mass for DBP; WHR for TC; WHR and age for TG; age, degree of smoking and PBF for HDL-C; WHR, age and degree of smoking for LDL-C. Conclusion: Factors identified in this study need to be considered in cardio-cerebrovascular disease prevention programs for young men.

Effect of Deoxygenizer on the Suppression of Lipid Deterioration of Boiled and Dried-Anchovy Engraulis japonica

  • JEONG Bo-Young;SEO Hae-Jeom;MOON Soo-Kyung;PYEUN Jae-Hyeung
    • 한국수산과학회지
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    • 제28권6호
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    • pp.779-792
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    • 1995
  • The effects of deoxygenizer (Deoxy) and sodium-erythorbate (Na-ery) on the changes in fatty acid compositions were investigated to prevent the loss of n-3 polyunsaturated fatty acids in lipid of bolied and dried-anchovy during storage. After storage for 5 months, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) of total lipid (TL) in Deoxy group decreased only $3.0\%\;and\;0.5\%$, respectively, compared to those of before storage. However, those in Control group decreased 9.5\%\;and\;2.3\%,$ respectively. In the case of Na­ery group, the percentages of DHA and EPA decreased were lower than those of Control. Most of DHA and EPA in n was lost in the early stage of storage. Total DHA remained in phospholipid (PL), triglyceride (TG), and free fatty acid (FFA) fractions after storage for 5 months were $98\%,\;66\%\;and\;62\%$ in Deoxy, Na-ery and Control group, respectively, and total EPA remained was slightly high level compared with those of DHA. The loss of DHA was more in PL than in TG. Consequently, deoxygenizer was recognized as a good material to prevent the loss of DHA and EPA of the boiled and dried-anchovy during storage.

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