نتایج جستجو برای: compressed liquids and mixtures
تعداد نتایج: 16844761 فیلتر نتایج به سال:
In this study, we fabricated a superhydrophilic and underwater superoleophobic protonated melamine sponge for effective separation of water-rich immiscible oil/water mixtures with extremely high separation efficiency. This protonated melamine sponge exhibited excellent antifouling properties and could be used to separate oil/water mixtures continuously for up to 12 h without any increase in the...
Molecular segregation in methanol-water mixtures is studied across a wide concentration range as a function of temperature and pressure. Cluster distributions obtained from both neutron diffraction and molecular dynamics simulations point to significantly enhanced segregation as the mixtures are cooled or compressed. This evolution toward greater molecular heterogenity in the mixture accounts f...
The essential oils of citrus fruits are valuable raw materials in the scent and flavouring industries. As extracted, they are complex mixtures with large proportions of terpene hydrocarbons that make them easily oxidizable and insoluble in aqueous and alcoholic solutions. This mini-review surveys the main processes by which these essential oils are currently extracted and deterpenated, and also...
2014 Starting from the Liouville equation we derive equations for density and concentration fluctuations in two-component polymeric liquids. An exact expression for the interdiffusion coefficient is obtained. As examples we consider mixtures of labelled molecules and the case of polymers solved in a low molecular weight liquid. The relation of the general formula to two widely used approximate ...
Using Thermal Desorption– Gas Chromatography for the Detection of Fire Accelerants in Arson Residues
Liquids like gasoline comprise a mixture of hundreds of hydrocarbon components. Gas chromatography of these complex mixtures produces highly detailed chromatograms that are characteristic of a particular sample. Although many of the volatile components will be lost during the fire, sufficient less-volatile components may have been left in partially burned wood or other materials to enable the d...
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