Zobrazeno 1 - 10
of 32
pro vyhledávání: '"R Kościesza"'
Autor:
A. Malanowski, R. Kościesza, Rafał Tarakowski, A. J. Rostocki, Marek Szalewski, R. M. Siegoczyński, Andrzej Balcerzak, Piotr Kielczynski, S. Ptasznik
Publikováno v:
High Pressure Research. 33:178-183
The influence of high pressure on viscosity and compressibility of diacylglycerol (DAG) oil has been presented in this paper. The investigated DAG oil was composed of 82% of DAGs and 18% TAGs (triacylglycerols). The dynamic viscosity of DAG was inves
Publikováno v:
High Pressure Research. :1-7
A sample of diacylglycerol (DAG) oil, being a mixture of DAGs and triacylglycerols with a ratio of 82% and 18%, respectively, and with a vestigial content of monoacylglycerols and free fatty acids, has been researched in high pressure conditions. As
Autor:
R. M. Siegoczyński, R. Kościesza
Publikováno v:
High Pressure Research. 31:237-242
Oleic acid (OA) is a monounsaturated omega-9 fatty acid which undergoes a first-order phase transition when it is influenced by high pressures. The transition results in a change of molecular structure, which was investigated by means of X-ray techni
Autor:
Michał Wierzbicki, R. Kościesza, D. B. Tefelski, A. J. Rostocki, Cezariusz Jastrzebski, R. M. Siegoczyński, K. Wieja
Publikováno v:
High Pressure Research. 30:124-129
This article presents results of the high pressure Raman spectroscopy of triolein. Triolein, a triacylglyceride (TAG) of oleic acid, is an unsaturated fat, present in natural oils such as olive oil. As a basic food component and an energy storage mol
Publikováno v:
High Pressure Research. 30:135-141
Results of high-pressure research on oleic acid are presented. The pVT data from a few compression and decompression cycles were used to determine an approximation to the equation-of-state surface in the thermodynamical space. From this approximation
Publikováno v:
High Pressure Research. 30:118-123
Oleic acid is one of the unsaturated fatty acids which frequently appears in food products such as edible fats and oils. A molecule of oleic acid possesses a double carbon bond, C=C, which is responsible for a transition to a new phase when pressure
Publikováno v:
Molecular Physics. 107:1889-1895
Fluorescence excitation spectra and fluorescence intensity traces of single terrylene molecules in 2,3-dimethylnaphthalene crystals were studied at 5 K and also at temperatures between 200 and 290 K. Terrylene molecules were found to be relatively ph
Publikováno v:
High Pressure Research. 29:61-66
Recently we showed that in case of the oleic acid (C 18 H 34 O 2), the transition to the high-pressure, strong scattering of light phase is quite complicated. This article presents further analysis of structure changes of the investigated liquid duri
Autor:
A. Roszkiewicz, A. Kos, R. Kościesza, W. Ejchart, A. J. Rostocki, R. M. Siegoczyński, C. Jastrze¸bski, D. B. Tefelski
Publikováno v:
High Pressure Research. 27:39-42
The article discusses further research of the new high-pressure phase in triolein and in triolein mixed with methyl alcohol. The transformation from the initial isotropic state of liquid to the high-pressure phase in case of the mixture of triolein
Publikováno v:
High Pressure Research. 27:47-50
We present the results of the experimental study of transmitted and scattered light in oleic acid under carefully selected rates of pressure changes automatically exerted at different ambient temperatures. When the temperature of the investigated sam