• Title/Summary/Keyword: n-Decanol

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Isothermal vapor-liquid equilibria of n-Dodecane-1-Decanol, n-Dodecane-1 -Dodecanol and 1-Decanol-1-Dodecanol systems by Head Space Analysis (Head Space Analysis에 의한 n-Dodecane-1-Decanol, n-Dodecane-1- Dodecanol과 1-Decanol-1-Dodecanol계의 등온 기액 평형)

  • Park, So-Jin;Kang, Yong;Lee, Tae-Jong;Choi, Myoung-Jai;Lee, Kyu-Wan
    • Journal of Energy Engineering
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    • v.2 no.2
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    • pp.225-230
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    • 1993
  • Isothermal vapor-liquid equilibrium data have been measured for binary systems n-dodecane-1-defanol, n-doderane-1-dodecanol, and 1-decanoi-1-dodecanol at 140$^{\circ}C$ by using head space gas chromatography (H.S.G.C) as a static method. The activity coefficients, calculated taking into acount the nonideality of the liquid phase, were correlated with the conventional g$\^$E/ model, Margules, van Laar, Wilson, NRTL equations. These equilibrium data were thermodynamically consistent by Rrdlich- kister test, among these data, system n-dodecane-1-detanoi has minimum azeotrope.

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Isobaric vapor-liquid equilibria for ternary and each corresponding binaries of the system n.Dodecane-1.Decanol-1.Dodecanol at 15 mbar (n.Dodecane-1.Decanol-1.Dodecanol 삼성분계 및 각 이성분계의 15 mbar 정합 기액평형)

  • 박소진;이태종
    • Journal of Energy Engineering
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    • v.2 no.3
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    • pp.308-314
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    • 1993
  • Both Vapor-liquid equilibrium data and boiling temperature have been measured for ternary and each corresponding binaries of n.dodecane-1.decanol-1.dodecanol mixture under constant pressure of 15 mbar. Measured vapor-liquid equilibrium data were correlated with the conventional g$\^$E/ model ; Margules, van Laar, Wilson, NRTL and UNIQUAC equations. Binary equilibrium data were thermodynamically tested by Redlich-Kister integral method and ternary data were also qualitatively checked by two point consistency test, suggested by McDermott-Ellis. Among the binary VLE data, only the system n.dodecane-1.decanol has minimum boiling azeotrope.

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Effect of irradiation on the oxidation kinetics of TODGA-based extraction mixtures at atmospheric pressure

  • Skvortsov, I.V.;Belova, E.V.;Yudintsev, S.V.
    • Nuclear Engineering and Technology
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    • v.52 no.9
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    • pp.2034-2040
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    • 2020
  • The gas evolution from mixtures consisting of 0.2 M solution of N,N,N',N'-tetra-n-octyldiglycolamide (TODGA) in n-alcohol (n-decanol or n-nonanol) with Isopar-M diluent was investigated during thermal oxidation. The effect of ionizing radiation on their thermal stability has been studied. It has been determined that the volume of gaseous thermolysis products increases by 260% in the case of n-nonanol and 80% in the case of n-decanol compared to non-irradiated solutions. It has been shown that the gas evolution rate and gas volume increase when the irradiated mixture saturated with nitric acid is heated. However, there are no prerequisites for the development of autocatalytic oxidation.

The Study of the Compatibility of MSDS for the Classification of Flammable Materials (위험물의 분류를 위한 MSDS 이용의 적정성 연구)

  • Kwon, Kyung-Ok
    • Fire Science and Engineering
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    • v.21 no.3
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    • pp.56-60
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    • 2007
  • The usage of MSDS (Material Safety Data Sheet) is increased world widely for the implementation of GHS and REACH. In order to know the accuracy of the data in MSDS the flash point of n-Decanol was measured by using a Tag closed tester, a Seta-flash closed tester, a Pensky-Martens closed tester and a Cleveland open tester in Japan and Korea, respectively. The test results of flash points of n-Decanol purchased different manufacturer were compared to the data of the references and MSDS. The flash points determined in Japan were similar to those in Korea but have shown much difference from those in MSDS and literatures. It is suggested that the results of flash points determined in this research have validity and manufacturers should be more careful when they make MSDS as well as for the classification of GHS and REACH.

The Penetration of n-Alkanols into Model Membranes of Cholesterol Plus Phospholipids Extracted from Brain Membranes (n-Alkanols가 Cholesterol과 인지질들로서 제제한 인공세포막에서의 침투정도)

  • Kim, Inn-Se;Baik, Seong-Wan;Chung, Kyoo-Sub
    • The Korean Journal of Pain
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    • v.6 no.1
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    • pp.74-82
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    • 1993
  • 신선한 소의 대뇌피질로부터 synaptosomal plasma membrane vesicles(SPMV)를 분리하고 이 SPMV로부터 추출한 총지질(cholesterol과 각종 인지질 함유)로서 제제한 인공세포막(SPMVTL)에서의 n-alkanols 침투 정도를 형광 probe를 이용한 형광 소광법을 통하여 검색하였다. n-alkanols는 SPMVTL 외부 단층(outer monolayer)의 표면에 주로 분포하되 그 탄소수에 비례하여 소수성 부위에 분포되는 양이 증가되는 경향을 나타내었다(1-decanol은 예외). Methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-hepatnol, 1-cotanol, 1-nonanol 및 1-decanol은 SPMVTL 외부 단층 표면(친수성 부위)에 분포되는 것이 소수성 부위에 분포되는 것에 비하여 각각 650, 288, 151.6, 69.5, 36.8, 11.9, 4.8, 1.6, 0.74, 2.1배가 된다는 것을 확인하였다. 1-decanol은 $C_{10}$인데도 불구하고 $C_8$인 1-octanol에 비하여 적은 양이 소수성 부위에 침투 분포되는 것이 확인되었다. 또한 n-alkanols는 저자등이 이미 보고한 SPMV에서의 경우보다도 본 연구에서의 SPMVTL의 경우가 현저하게 많은 양이 소수성 부위로 침투 분포된다는 것이 확인되었다.

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The Effect of n-Alkanols on the Lateral Diffusion of Synaptosomal Plasma Membrane Vesicles Isolated from Bovine Cerebral Cortex (n-Alkanols가 소의 대뇌피질로부터 분리한 Synaptosomal Plasma Membrane Vesicles의 측방확산운동 범위와 속도에 미치는 영향)

  • Chung, In-Kyo;Kang, Jung-Sook;Yun, Il
    • The Korean Journal of Pharmacology
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    • v.29 no.1
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    • pp.157-163
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    • 1993
  • Intramolecular excimer formation with the fluorescent probe 1,3-di(1-pyrenyl)propane (Py-3-Py) was used to investigate the effects of methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol and 1-decanol on the lateral diffusion of synaptosomal plasma membrane vesicles isolated from bovine cerebral cortex (SPMV). The n-alkanols increased the excimer to monomer fluorescence intensity ratio (I'/I) of Py-3-Py in the SPMV. In a dose-dependent manner, n-alkanols increased lateral diffusion of hydrocarbon region of bulk (inner+outer monolayers) SPMV lipid bilayers, and the potencies of n-alkanols up to l-nonanol increased with carbon chain length. It appears that the potencies in bilayer fluidization due to the lateral diffusion increase by 1 order of magnitude as the carbon chain length increases by two carbon atoms. The cut-off phenomenon was reached at 1-decanol, where further increase in hydrocarbon length resulted in a decrease in pharmacological activity.

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The Penetration Site of n-Alkanols into Synatosomal Plasma Membrane Vesicles Isolated from Bovine Cerebral Cortex (소의 대뇌피질로부터 분리된 Synaptosomal Plasma Membrane Vesicle에서의 n-Alkanols의 침투정도)

  • Kim, Inn-Se;Kwon, Jae-Young;Baik, Seong-Wan;Chung, Kyoo-Sub
    • The Korean Journal of Pain
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    • v.6 no.2
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    • pp.237-246
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    • 1993
  • 세포막에서 마취제의 작용점을 규명하기 위하여, 마취제의 많은 부분을 차지하는 n-Alkanol을 이용하여, 소의 synaptosomal plasma membrane vesicles(SPMV)에서 n-Alkanol의 침투 정도를 형광 probe를 이용한 형광소광법을 통하여 검색하였다. n-Alkanols는 SPMV 외부 단층(outer monolayer)의 표면에 주로 분포하되 그 탄소수에 비례하여 소수성 부위에 분포되는 양이 증가되는 경향을 나타내었다(1-decanol은 제외). Methanol, Ethanol, 1-propanol, 1-butanol, 1-pentano, 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol 및 1-decanil은 SPMV 외부 단층의 표면(친수성 부위)에 분포되는 것에 비하여 각각 949, 416.8, 214.8, 90.3, 53.7, 15.20, 6.80, 2.00, 1.03 및 2.40 배가 된다는 것을 확인하였다. 1-decanol은 $C_{10}$인데도 불구하고 $C_8$인 1-octanol에 비하여 적은 양이 소수성 부위에 침투 분포한다는 것이 확인되었다.

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The Penetration of n-Alkanols into Model Membranes of cholesterol Plus Phospholipids Extracted from Brain Membranes (n-Alkanols가 인지질들로서 제제한 인공세포막에서의 침투정도)

  • Kim, Inn-Se;Baik, Seong-Wan;Chung, Kyoo-Sub
    • The Korean Journal of Pain
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    • v.6 no.1
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    • pp.67-73
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    • 1993
  • 소의 신선한 대뇌피질로부터 synaptosomal plasma membrane vesicles(SPMV)를 분리한 후 이 SPMV로부터 추출한 모든 인지질들로서 제제한 인공세포막(SPMVPL)에서의 n-alkanols 침투 정도를 형광 probe를 이용한 형광 소광법을 통하여 검색하였다. n-alkanols는 SPMVPL 외부 단층(outer monolayer)의 표면에 주로 분포하되 그 탄소수에 비례하여 소수성 부위에 분포되는 양이 증가되는 경향을 나타내었다. methanol, ethanol, 1-propano, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol 및 1-decanol은 SPMVPL 외부 단층의 표면(친수성 부위)에 분포되는 것이 소수성 부위에 분포되는 것에 비하여 각각 432.4, 208.9. 125.6, 88.2, 19.3, 7.9, 2.6, 1.0, 0.42, 1.36배가 되었다. 1-decanol은 $C_{10}$인데도 불구하고 $C_8$인 1-octanol에 비하여 적은 양이 소수성 부위에 침투 분포된다는 것이 확인되었다. n-alkanols의 침투에 대하여 저자등이 이미 보고한 바 있는 SPMV 및 SPMVTL(cholesterol+phospholipids)의 경우보다도 본 연구에서의 SPMVPL의 경우가 현저하게 많은 양이 소수성 부위로 침투 분포된다는 것도 확인되었다.

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Aroma-Active Compounds in Omandungi (Styela plicata)-Doenjang (Soybean Paste) Stew (오만둥이 된장찌개의 Aroma-active 화합물)

  • Jeong, Eun-Jeong;Cho, Woo-Jin;Cha, Yong-Jun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.41 no.6
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    • pp.414-418
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    • 2008
  • Volatile compounds in Omangdungi (Styela plicata)-Doenjang (soybean paste) stew were analyzed using solvent-assisted flavor evaporation/gas chromatography/mass-selective detection/olfactometry (SAFE/GC/MSD/O) and aroma extract dilution analysis (AEDA). The GC/O analysis detected 37 volatile compounds, of which 32 were positively identified, and included 9 aldehydes, 5 alcohols, 4 aromatic hydrocarbons, 4 ketones, 3 esters, 3 N-containing compounds, 2 acids, 1 S-containing compound, and 1 furan. Nine aroma-active odorants ($\log_3FD{\geq}3.0$) in the sample included six compounds derived from Doenjang (3-methyl(thio)propanal, tetramethylpyrazine, 4-vinyl-2-methoxyphenol, 2-acetylpyrrole, butyric acid, and 2-methoxyphenol) and three compounds from Omangdungi (2-acetyl-2-thiazoline, 9-decanol, and 6-decenol). Three compounds derived from Omangdungi (9-decanol, 6-decenol, and 6-nonenol) were thought to enhance the seafood-like flavor of Omangdungi-Doenjang stew.