"151-155" . "0167-7322" . . "The BACK equation of state represents a powerful tool in the description of the P-V-T behavior of fluid systems in broad range of independent variables - temperature, pressure and composition; this equation comprises four compound-specific parameters which are adjusted to the equilibrium data. In the previous contribution, the possibility was studied of determining one of the parameters, the non-sphericity one, from a theoretical approach; here we extend our study to theoretical determination of two parameters, one connected with the size and the other with shape of molecular models. On the basis of the structural data - bond distances and bond angles - three characteristics of the hard body models of the studied molecules - the reduced volume, surface area and the mean curvature integral, divided by 4pi - are determined and used to evaluate the non-sphericity parameter, alpha, and close-packed volume, V00. The method is applied to argon, krypton and methane (with a spherical shape of m"@en . "1"^^ . . "NL - Nizozemsko" . . . "Rovnice BACK p\u0159edstavuje v\u00FDznamn\u00FD n\u00E1stroj k popisu P-V-T chov\u00E1n\u00ED tekutin v \u0161irok\u00E9m oboru nez\u00E1visl\u00FDch prom\u011Bnn\u00FDch ? teplot\u011B, tlaku a slo\u017Een\u00ED ; tato rovnice zahrnuje \u010Dty\u0159i l\u00E1tkov\u011B specifick\u00E9 parametry, kter\u00E9 jsou adjustov\u00E1ny na rovnov\u00E1\u017En\u00E1 data. V p\u0159edchoz\u00EDm p\u0159\u00EDsp\u011Bvku jsme studovali mo\u017Enost ur\u010Den\u00ED jednoho z parametr\u016F, parametru nesfericity, z teoretick\u00FDm postupem; zde je studie roz\u0161\u00ED\u0159ena na teoretick\u00E9 ur\u010Den\u00ED dvou parametr\u016F, jednoho spojen\u00E9ho s velikost\u00ED a druh\u00FD s tvarem molekul\u00E1rn\u00EDch model\u016F. Na z\u00E1klad\u011B struktur\u00E1ln\u00EDch dat ? d\u00E9lky vazeb a vazebn\u00FDch \u00FAhl\u016F ? byly ur\u010Deny t\u0159i charakteristiky tuh\u00FDch model\u016F studovan\u00FDch molekul ? redukovan\u00FD objem, povrch a integr\u00E1l st\u0159edn\u00ED k\u0159ivosti, d\u011Blen\u00FD 4 pi ? a pou\u017Eity k ur\u010Den\u00ED parametru nesfericity, alfa, a objemu nejt\u011Bsn\u011Bj\u0161\u00EDhomusp\u0159\u00E1d\u00E1n\u00ED V00. Metoda je pou\u017Eita na argon, krypton a metan (s kulov\u00FDm tvarem molekul\u00E1rn\u00EDho modelu) a dus\u00EDku, kysl\u00EDku a etanu (modelovan\u00E9 jako diatomick\u00E9 molekuly) a vzduchu (sm\u011Bsi dus\u00EDku a kysl\u00EDku); jej\u00ED p\u0159edpov\u011B\u010F je porovn\u00E1na s v\u00FDsledky, z\u00EDskan\u00FDmi post"@cs . "5"^^ . . . . "BACK Equation of State for Simple Compounds" . . . "RIV/44555601:13440/07:00003813" . "The BACK equation of state represents a powerful tool in the description of the P-V-T behavior of fluid systems in broad range of independent variables - temperature, pressure and composition; this equation comprises four compound-specific parameters which are adjusted to the equilibrium data. In the previous contribution, the possibility was studied of determining one of the parameters, the non-sphericity one, from a theoretical approach; here we extend our study to theoretical determination of two parameters, one connected with the size and the other with shape of molecular models. On the basis of the structural data - bond distances and bond angles - three characteristics of the hard body models of the studied molecules - the reduced volume, surface area and the mean curvature integral, divided by 4pi - are determined and used to evaluate the non-sphericity parameter, alpha, and close-packed volume, V00. The method is applied to argon, krypton and methane (with a spherical shape of m" . . . . "Stavov\u00E1 rovnice BACK pro jednoduch\u00E9 slou\u010Deniny"@cs . . "BACK Equation of State for Simple Compounds"@en . "BACK Equation of State for Simple Compounds"@en . "Boubl\u00EDk, Tom\u00E1\u0161" . . "13440" . "[0CC3D80D4EC7]" . . "BACK Equation of State for Simple Compounds" . "Stavov\u00E1 rovnice BACK pro jednoduch\u00E9 slou\u010Deniny"@cs . "BACK; Equation of state; BACK parameters; enlarged hard dumbbell; argon; krypton; methane; nitrogen; oxygen; ethane; air; mixture"@en . "Journal of Molecular Liquids" . . "411272" . "RIV/44555601:13440/07:00003813!RIV08-AV0-13440___" . . . . . . . . "134" . "1"^^ . . "P(IAA400720710)" .