Liquid-Solid Forming under High Pressure

High pressure solid–liquid equilibria of fatty acids

The solid–liquid phase diagrams of two binary mixtures of saturated fatty acids, formed by caprylic acid (C8:0) + myristic acid (C14:0) and lauric acid (C12:0) + myristic acid (C14:0), were measured using high pressure microscopy in the range of 0.1–90 MPa. It is shown that unlike for other long chain alkyl compounds such as alkanes the phase diagrams are only slightly affected by the pressure,...

Melting Temperature Depression of Solid Lipid under High Pressure Gases

The effects of high pressure gases on solid lipids were investigated by high-pressure differential scanning calorimeter (DSC). In particular, the influence of a high-pressure gas on solid-liquid and solid-solid transitions were investigated for pure tristearin and a mixture of lipids (tristearin-phosphatidylcoline-dioctilsolfosuccinate). Both of these substances are commonly used for the produc...

Brillouin Scattering in Liquid Benzene Under High Pressure

Brillouin spectra have been measured in liquid Benzene at high pressures up to 1300 bar and at the temperatures 298.15 K, 313.15 K, 323.15 K. and 343.15 K. From the experimental spectra the hypersound velocities and the energy relaxation times were determined. The total velocity dispersion v \ j v \ due to the relaxation of the vibrational specific heat c, is found to be nearly density independ...

Pressure waves induced in liquid under high laser irradiation

High-Pressure Liquid Chromatography

An isocratic reversed-phase high-pressure liquid chromatographic method for the determination of six components of the teicoplanin complex in biological fluid was developed. By using fluorescence detection after precolumn derivatization with fluorescamine, the assay is specific and highly sensitive, with reproducibility studies yielding coefficients of variation ranging from 1.5 to 8.5% (at 5 t...