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Archives of Acoustics
2007 Vol. 32, No. 4 933--940
EN It is commonly accepted that the existence of entropy imposes restrictions on the constutive functions in the Navier-Stokes-Fourier equations. In the paper: S. Piekarski, "On the Navier- Stokes equation for water" (Archives of Acoustics, 31, 2, 265271, 2006) it has been shown that if the energy per [...]
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Zeszyty Naukowe Instytutu Maszyn Przepływowych Polskiej Akademii Nauk w Gdańsku
EN We formulate rigorously the global and local laws of mechanics and thermodynamics for shells with singularities at some stationary or moving curves in the shell base surface (itself not necessarily smooth). The laws are derived in an exact manner from underlying laws of continuum thermomechanics wri[...]
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Archives of Acoustics
EN In general, the existence of entropy imposes restrictions on the constitutive functions in the Navier-Stokes equations. In this paper, it is shown that if the energy per unit mass is a function of the temperature Τ only, then the pressure p is an arbitrary function of the density ρ multiplied by the[...]
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Prace Instytutu Podstawowych Problemów Techniki PAN
1999 nr 5 4-169
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Technika Chłodnicza i Klimatyzacyjna
2005 nr 10 370-373
PL Opracowanie, na które składa się pięć części zawierających analizę odbiegającą od typowych, spotykanych w literaturze opisów termodynamicznych obiegów lewobieżnych. W oparciu o drugą zasadę termodynamiki, w materiale opisano jednostopniowy obieg lewobieżny przy pomocy odpowiednich przyrostów entropi[...]
EN This is the third part of the article consisting of five parts dealing with non-conventional thermodynamic analysis of the refrigeration cycles. On the basis of the second law of thermodynamics the refrigeration cycle has been described by means of the differences of entropy and appropriate works as[...]
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Journal of KONES
EN Shortage of crude oil gives the reason to look for any alternative engine fuel. One of them is the hydrogen, which will be the most lean fuel between others. Knowledge of hydrogen as an engine fuel, its properties, production and storage problems were analyzed in this paper. At the end own hydrogen [...]
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Journal of KONES
EN The most important problems concerning analyses of generalized computational thermodynamical working cycle of the four-stroke combustion engine are result of the identification of real indicating diagram. The analysis of working cycle of the four-stroke combustion engine is realized from point of vi[...]
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Computer Methods in Materials Science
2013 Vol. 13, No. 3 407--411
PL W pracy wykorzystano oprogramowanie termodynamiczne FACT i bazę danych SINTEF dla krzemu o wysokiej czystości do oceny oddziaływania pomiędzy zagęszczającymi pierwiastkami borem i fosforem oraz typowymi pierwiastkami (Al, C, Ca, Cr, Cu, Fe, Mg, Mn, Mo, N, Na, Ni, O, Sn, Ti, V, Zr) stanowiącymi zanie[...]
EN Using the thermodynamic software FACT, and the SINTEF database for high purity silicon, the interaction coefficients between the doping elements boron and phosphorus and a range of impurity elements (Al, C, Ca, Cr, Cu, Fe, Mg, Mn, Mo, N, Na, Ni, O, Sn, Ti, V, Zn, Zr) have been calculated in liquid s[...]
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Journal of Theoretical and Applied Mechanics
1999 nr 4 809-827
PL Analizujemy związki termodynamiczne opisujące równowagę ciała termosprężystego złożonego z wielu faz. Czynimy to w sposób podobny do stosowanego w teorii płynów wielofazowych. Po określeniu przejść fazowych drugiegi i trzeciego rodzaju wyprowadzamy związki typu Clapeyrona--Clausiusza i Ehrenfesta. O[...]
EN The thermodynamic relations describing equilibrium of a multi--phase thermoelastic solid are obtained in a way similar to that used in the multiphase fluid theory. The phase transitions of the first order are defined and equilibrium equations of the Capeyron--Clausius type are derived. Also, the pha[...]
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Rudy i Metale Nieżelazne
PL W artykule przedstawiono sposób wyznaczenia współczynników aktywności tlenu według Raoulta, dla ciekłych stopów Ni-Cu w temperaturach 1773 K i 1823 K o zróżnicowanej zawartości Cu, z wykorzystaniem różnych modeli teoretycznych. Brali wiedzy na temat niektórych parametrów oddziaływania sprawił, iż w [...]
EN The method of estimating the oxygen activity coefficient, according to Raoult, for the liquid Ni-Cu alloys - of a variable Cu content - at temperatures 1773 K and 1823 K is presented in the paper upon four theoretical models. The Ni-Cu alloys, not Cu-Ni alloys, were considered due to the fact that t[...]
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Polish Journal of Chemistry
2007 Vol. 81, nr 12 2069-2069
EN Three new salen derivative ligands (L1, L2 and L3), containing mixed-ligand donor sets of NSNO, have been synthesized. The thermodynamics of complexation reaction between new synthesized salens and copper(II) ion in acetonitrile solution was studied by conductometric method. Formation constants of t[...]
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Journal of KONES
EN The relationships between physical quantities determining thermodynamic state of an ideal gas are analysed in the paper. It will be proved that such relationships can be obtained based on convex analysis of the formula describing specific energy of the gas. This formula is expressed as a functional [...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN A regular solution theory for a two-dimensional system with three components of different molecular sizes, adapted from statistical thermodynamics, is used to derive equations describing parameters related to the molecular interactions in mixed Langmuir monolayers. The theory has been applied by exa[...]
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Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje
EN Using a microcalorimetric technique, kinetic isotherms of adsorption heats have been obtained for aliphatic and aromatic hydrocarbons on the surfaces of polymer and natural sorbents at 293-323 K. Thermodynamic and kinetic parameters, equlibrium character and direction of the process of hydrocarbon s[...]
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Polish Journal of Chemistry
1998 Vol. 72, nr 12 2556-2563
EN The complex formation of cadmium(II) with ethylenediaminetetraacetate (H4Edta), iminodiacetate (H2Imda) and glycine (HGl) has been studied by chronopotentiometry. It has been found that cadmium(II) forms with the above ligands complex ions of the compositions: CdHEdta(-), CdHEdta(2-), CdImda, Cd(Imd[...]
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Technika Chłodnicza i Klimatyzacyjna
2006 nr 5 190-193
PL Artykuł stanowi czwartą część cyklu publikacji, w którym w oparciu o drugą zasadę termodynamiki opisano jednostopniowy obieg lewobieżny przy pomocy odpowiednich przyrostów entropii oraz związanych z nimi przyrostów pracy napędowej, generujących rzeczywiste procesy nieodwracalne. W części pierwszej c[...]
EN This is the third part of the article consisting of five parts dealing with non-conventional thermodynamic analysis of the refrigeration cycles. On the basis of the second law of thermodynamics the refrigeration cycle has been described by means of the differences of entropy and appropriate works as[...]
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Polish Journal of Chemistry
EN The basicity of pyridine and its derivatives, as representatives of monocyclic heterocyclic N-bases, has been compared with that of pyridine N-oxide and its derivatives representing the class of heterocyclic monocyclic oxygen-containing bases. The basicities have been compared both in the gas phase [...]
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Engineering Transactions
EN The article presents some formalised definitions of volume density of the molar number of a mixture and a mixture component. With the help of the above definitions, the molar concentration of a mixture component has been determined. An analysis has also been made to define partial volume density. Th[...]
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Engineering Transactions
EN The paper aims at the development of the thermodynamic theory of elasto-viscoplasticity of single crystals which takes account of the evolution of the dislocation substructure. The next objective is the application of the theory developed for the investigation of the adiabatic shear-band formation i[...]
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Polish Journal of Chemistry
EN The dissociation constant of 4-(4-acetophenyl)hydrazono-3-methyl-1-phenyl-2-pyrazolin-5-one (AHMPP) has been determined potentiometrically in 0.1 M KCl and 50% (v/v) ethanol-water mixture. Also, the stepwise stability constants of the formed complexes of Mn2+, Co2+, Ni2+, Cu2+, Zn2+, La3+, Ce3+, UO2[...]
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