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14 Sonuçlar
On the possibility that cyclodextrins' chiral cavities can be available on AOT n-heptane reverse micelles. A UV-visible and induced circular dichroism study.
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The formation of reverse micelles (RMs) of sodium 1,4-bis(2-ethylhexyl)sulfosuccinate (AOT) in n-heptane including two different beta-cyclodextrin (beta-CD) derivatives (hydroxypropyl-beta-CD, hp-beta-CD, and decenyl succinyl-beta-CD, Mod-beta-CD) is reported. Both cyclodextrins can be incorporated
Hydroperoxide Measurements During Low-Temperature Gas-Phase Oxidation of n-Heptane and n-Decane.
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A wide range of hydroperoxides (C1-C3 alkyl hydroperoxides, C3-C7 alkenyl hydroperoxides, C7 ketohydroperoxides, and hydrogen peroxide (H2O2)), as well as ketene and diones, have been quantified during the gas-phase oxidation of n-heptane. Some of these species, as well as C10 alkenyl hydroperoxides
Determination of descriptors for organosilicon compounds by gas chromatography and non-aqueous liquid-liquid partitioning.
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Measurements of retention factors by gas chromatography on up to 10 complementary stationary phases at up to 5 temperatures for each stationary phase and liquid-liquid partition coefficients in three biphasic organic solvent systems (n-hexane-acetonitrile, n-heptane-N,N-dimethylformamide and
Determination of descriptors for semivolatile organosilicon compounds by gas chromatography and non-aqueous liquid-liquid partition.
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The measurement of retention factors by gas chromatography on up to 15 stationary phases at several temperatures in the range 60-240 degrees C for each stationary phase and liquid-liquid partition coefficients in three biphasic organic solvent systems (n-hexane-acetonitrile,
Fully atomistic molecular-mechanical model of liquid alkane oils: Computational validation.
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Fully atomistic molecular dynamics simulations were performed on liquid n-pentane, n-hexane, and n-heptane to derive an atomistic model for middle-chain-length alkanes. All simulations were based on existing molecular-mechanical parameters for alkanes. The computational protocol was optimized, for
Selective Adsorption of n-Alkanes from n-Octane on Metal-Organic Frameworks: Length Selectivity.
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The liquid-phase adsorption of n-alkanes (from n-octane (C8) solvent) with different chain lengths was carried out over three metal-organic frameworks (MOFs), viz., metal-azolate framework-6 (MAF-6), copper-benzenetricarboxylate (Cu-BTC), and iron-benzenetricarboxylate (MIL-100(Fe)), and a
The entropic origin of solvent effects on the single bond cZt-tZt isomerization rate constant of 1,3,5-cis-hexatriene in alkane and alcohol solvents: a molecular dynamics study.
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The single-bond cZt-tZt isomerization rate constants of 1,3,5-cis-hexatriene dissolved in a series of explicit alkane (cyclohexane, n-heptane, and cycloheptane) and alcohol (methanol, ethanol, and n-propanol) solvents were calculated via reactive flux theory, from classical molecular dynamics
Helical folding of alkanes in a self-assembled, cylindrical capsule.
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The reversible encapsulation of a series of normal alkane guests in a cylindrical host was studied by NMR methods. For small hydrocarbons such as n-pentane or n-hexane, two guests enter the host, and they move freely within. With n-heptane no encapsulation takes place. For longer alkanes such as
Supramolecular assemblies obtained by mixing different cyclodextrins and AOT or BHDC reverse micelles.
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In this contribution we show the effect of the surfactant polar head and the external solvent on the incorporation of different cyclodextrins (CDs) {α-CD, β-CD, γ-CD, decenylsuccinyl-β-CD (Mod-β-CD), and hydroxypropyl-β-CD (hp-β-CD)} in different reverse micelles (RMs) {benzene/sodium
The Comparison of Sorption and Solubility Behavior of Four Different Resin Luting Cements in Different Storage Media.
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BACKGROUND
Structural integrity and dimensional stability are the key factors that determine the clinical success and durability of luting cements in the oral cavity. Sorption and solubility of self-adhesive resin luting cements in food-simulating solutions has not been studied
In vivo inhibition of nitric oxide synthase by bisisothiouronium and bisguanidinium salts.
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The ability of two S,S'-(alkane-1,omega-diyl) bisisothiouronium dibromides, three N,N'-(alkane-1, omega-diyl) bis guanidinium dinitrates and N,N'-bis (3-guanidinopropyl)piperazine dinitrate to inhibit constitutive (i.e. endothelial and neuronal forms) and inducible forms of nitric oxide synthases
Evaluation of the separation mechanism of electrokinetic chromatography with a microemulsion and cyclodextrins using NMR and molecular modeling.
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Electrokinetic chromatography (EKC) allows the separation of closely related substances by the detection of fine effects in analyte-separation system interactions. With the goal of understanding the fine effects involved in separation using a dual cyclodextrin-microemulsion EKC system, an integrated
Partitioning of solutes in different solvent systems: the contribution of hydrogen-bonding capacity and polarity.
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Published partition coefficient values of 121 solutes in five solvent systems (1-octanol-water, n-heptane-water, chloroform-water, diethyl ether-water, and n-butyl acetate-water) were correlated with solute properties, namely intrinsic molecular volume (indicator of cavity formation) and the
Separation of Linear and Branched Alkanes Using Host-Guest Complexation of Cyclic and Branched Alkane Vapors by Crystal State Pillar[6]arene.
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Activated crystals of pillar[6]arene produced by removing the solvent upon heating were able to take up branched and cyclic alkane vapors as a consequence of their gate-opening behavior. The uptake of branched and cyclic alkane vapors by the activated crystals of pillar[6]arene induced a crystal
Bilim tarafından desteklenen en eksiksiz şifalı otlar veritabanı
- 55 dilde çalışır
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- İlgi alanlarınızı düzenleyin ve haber araştırmaları, klinik denemeler ve patentlerle güncel kalın
Bir belirti veya hastalık yazın ve yardımcı olabilecek bitkiler hakkında bilgi edinin, bir bitki yazın ve karşı kullanıldığı hastalıkları ve semptomları görün.
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