Dielectric constant and density of water as a function of pressure at constant temperature
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876448889845841920 |
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| author | Wely Floriano Brasil |
| author_facet | Wely Floriano Brasil |
| contents | Dielectric constant and density of water as a function of pressure at constant temperature Wely Floriano Brasil Marco Antonio Nascimento Chaer Física, Astronomía y Matemáticas In order to simulate the effects of hydrostatic pressure on protein folding/unfolding it is necessary to accuratelydescribe the behavior of the dielectric constant and the density of the solvent (water), in the range of pressures(between 0.1 MPa and 2.0 GPa) and temperatures (below 75 ° C) required for pressure-induced unfolding. Asimple equation of the form X = X (T, Pi) + a0 ln (ai+ P)/(ai + Pi) [were X is the property, Pi (in MPa)is the reference pressure and ai are coefficients adjusted to fit experimental values] is proposed to describeboth properties as function of pressure, at constant temperatures. The equation reproduces available data fordielectric constant and density of water to an accuracy of 0.1%. Because of its simplicity and accuracy, theproposed equation is useful for simulation studies and for any other problem where the knowledge of thoseproperties as a function of pressure is needed. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434105 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.34 |
| format | Artículo científico |
| id | redalyc_46434105 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Dielectric constant and density of water as a function of pressure at constant temperature Wely Floriano Brasil Física, Astronomía y Matemáticas Dielectric constant and density of water as a function of pressure at constant temperature Wely Floriano Brasil Marco Antonio Nascimento Chaer Física, Astronomía y Matemáticas In order to simulate the effects of hydrostatic pressure on protein folding/unfolding it is necessary to accuratelydescribe the behavior of the dielectric constant and the density of the solvent (water), in the range of pressures(between 0.1 MPa and 2.0 GPa) and temperatures (below 75 ° C) required for pressure-induced unfolding. Asimple equation of the form X = X (T, Pi) + a0 ln (ai+ P)/(ai + Pi) [were X is the property, Pi (in MPa)is the reference pressure and ai are coefficients adjusted to fit experimental values] is proposed to describeboth properties as function of pressure, at constant temperatures. The equation reproduces available data fordielectric constant and density of water to an accuracy of 0.1%. Because of its simplicity and accuracy, theproposed equation is useful for simulation studies and for any other problem where the knowledge of thoseproperties as a function of pressure is needed. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434105 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.34 |
| title | Dielectric constant and density of water as a function of pressure at constant temperature |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434105 |