The Experts below are selected from a list of 54 Experts worldwide ranked by ideXlab platform
Mireille Turmine - One of the best experts on this subject based on the ideXlab platform.
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part 2 limiting apparent molar volume of organic and inorganic 1 1 electrolytes in water ethylammonium nitrate mixtures at 298 k thermodynamic approach using bahe varela pseudo lattice theory
The Journal of Chemical Thermodynamics, 2008Co-Authors: Sabbah Bouguerra, Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract Values of partial molar volumes at infinite dilution of 9 inorganic and 4 organic 1:1 electrolytes have been determined in (water + ethylammonium nitrate) (EAN) binary at 298.15 K throughout the Composition Scale. Our theoretical analysis shows that the values of partial molar volumes at infinite dilution of a solute in a binary are linked to those of the partial molar volumes of the components of mixed solvent. This applies to mixtures of molecular solvents as well as (water + ionic liquid) media. The use of the “pseudo-lattice theory” of Bahe recently supplemented Varela can be used for calculations and to obtain information about the interactions between 1:1 electrolytes as solutes at infinite dilution and their concentrated saline environment. We show that the “pseudo-lattice theory” allows accurate description of the behaviours of symmetrical tetraalkylammoniums bromide between the infinitely dilute state and concentrations higher than 2 mol · L−1.
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part i thermodynamic analysis of volumetric properties of concentrated aqueous solutions of 1 butyl 3 methylimidazolium tetrafluoroborate 1 butyl 2 3 dimethylimidazolium tetrafluoroborate and ethylammonium nitrate based on pseudo lattice theory
The Journal of Chemical Thermodynamics, 2007Co-Authors: Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract This study concerns volumetric behaviour of mixtures between water and three ionic liquids: 1-butyl-3-methylimidazolium tetrafluoroborate (bmimBF 4 ), 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (bdmimBF 4 ), and ethylammonium nitrate (EAN). We report that the pseudo-lattice theory proposed by Bahe and recently supplemented by Varela et al . can suitably describe the partial molar volume of ionic liquids throughout the Composition Scale from the infinitely dilute state to the pure room temperature molten salt. In this approach, the ions of 1:1 electrolytes in concentrated solutions are supposed to be distributed in a face-centred-cubic structure. The main advantage of this approach is that, contrary to Debye–Huckel approach, it widens the range of Composition that can be described to high concentration salt solutions (several times molar) and also the most diluted salt solutions.
Andrew J E Seely - One of the best experts on this subject based on the ideXlab platform.
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Clinical review: A review and analysis of heart rate variability and the diagnosis and prognosis of infection
Critical Care, 2009Co-Authors: Saif Ahmad, Anjali Tejuja, Kimberley D Newman, Ryan Zarychanski, Andrew J E SeelyAbstract:Bacterial infection leading to organ failure is the most common cause of death in critically ill patients. Early diagnosis and expeditious treatment is a cornerstone of therapy. Evaluating the systemic host response to infection as a complex system provides novel insights: however, bedside application with clinical value remains wanting. Providing an integrative measure of an altered host response, the patterns and character of heart rate fluctuations measured over intervals-in-time may be analysed with a panel of mathematical techniques that quantify overall fluctuation, spectral Composition, Scale-free variation, and degree of irregularity or complexity. Using these techniques, heart rate variability (HRV) has been documented to be both altered in the presence of systemic infection, and correlated with its severity. In this review and analysis, we evaluate the use of HRV monitoring to provide early diagnosis of infection, document the prognostic implications of altered HRV in infection, identify current limitations, highlight future research challenges, and propose improvement strategies. Given existing evidence and potential for further technological advances, we believe that longitudinal, individualized, and comprehensive HRV monitoring in critically ill patients at risk for or with existing infection offers a means to harness the clinical potential of this bedside application of complex systems science.
Ibrahim Bou Malham - One of the best experts on this subject based on the ideXlab platform.
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part 2 limiting apparent molar volume of organic and inorganic 1 1 electrolytes in water ethylammonium nitrate mixtures at 298 k thermodynamic approach using bahe varela pseudo lattice theory
The Journal of Chemical Thermodynamics, 2008Co-Authors: Sabbah Bouguerra, Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract Values of partial molar volumes at infinite dilution of 9 inorganic and 4 organic 1:1 electrolytes have been determined in (water + ethylammonium nitrate) (EAN) binary at 298.15 K throughout the Composition Scale. Our theoretical analysis shows that the values of partial molar volumes at infinite dilution of a solute in a binary are linked to those of the partial molar volumes of the components of mixed solvent. This applies to mixtures of molecular solvents as well as (water + ionic liquid) media. The use of the “pseudo-lattice theory” of Bahe recently supplemented Varela can be used for calculations and to obtain information about the interactions between 1:1 electrolytes as solutes at infinite dilution and their concentrated saline environment. We show that the “pseudo-lattice theory” allows accurate description of the behaviours of symmetrical tetraalkylammoniums bromide between the infinitely dilute state and concentrations higher than 2 mol · L−1.
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part i thermodynamic analysis of volumetric properties of concentrated aqueous solutions of 1 butyl 3 methylimidazolium tetrafluoroborate 1 butyl 2 3 dimethylimidazolium tetrafluoroborate and ethylammonium nitrate based on pseudo lattice theory
The Journal of Chemical Thermodynamics, 2007Co-Authors: Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract This study concerns volumetric behaviour of mixtures between water and three ionic liquids: 1-butyl-3-methylimidazolium tetrafluoroborate (bmimBF 4 ), 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (bdmimBF 4 ), and ethylammonium nitrate (EAN). We report that the pseudo-lattice theory proposed by Bahe and recently supplemented by Varela et al . can suitably describe the partial molar volume of ionic liquids throughout the Composition Scale from the infinitely dilute state to the pure room temperature molten salt. In this approach, the ions of 1:1 electrolytes in concentrated solutions are supposed to be distributed in a face-centred-cubic structure. The main advantage of this approach is that, contrary to Debye–Huckel approach, it widens the range of Composition that can be described to high concentration salt solutions (several times molar) and also the most diluted salt solutions.
Rainer Schmidfetzer - One of the best experts on this subject based on the ideXlab platform.
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thermodynamics of li si and li si h phase diagrams applied to hydrogen absorption and li ion batteries
Intermetallics, 2017Co-Authors: Songmao Liang, Franziska Taubert, Artem Kozlov, Jurgen Seidel, Florian Mertens, Rainer SchmidfetzerAbstract:Abstract A consistent thermodynamic description of the Li-Si system and its extension to the Li-Si-H system is developed based on comprehensive Calphad-type assessment of all pertinent thermodynamic and phase equilibrium data. Key experiments were performed by measuring the equilibrium pressure for the hydrogenation of the lithium silicides at 773 K, 748 K and 723 K. The Gibbs energy functions of the Li-Si compounds developed in this work are validated by direct comparison of the predicted hydrogen pressure with experimental data. The interrelation of the hydrogen absorption pressure with the calculated Li-Si-H ternary phase diagram is also elucidated. The calculated Li-Si phase diagram, both on chemical potential and Composition Scale, is well supported by the entity of experimental data. In addition to the stable intermetallics Li17Si4, Li16.42Si4 (Li4.11Si), Li13Si4, Li7Si3, Li12Si7, LiSi also metastable Li15Si4 and an approximate for amorphous Si(Li) is included in the thermodynamic modeling. Qualitative prediction of open-circuit voltage curves during metastable lithiation/delithiation of Si as advanced anode material for Li-ion batteries at room temperature is made.
Pierre Letellier - One of the best experts on this subject based on the ideXlab platform.
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part 2 limiting apparent molar volume of organic and inorganic 1 1 electrolytes in water ethylammonium nitrate mixtures at 298 k thermodynamic approach using bahe varela pseudo lattice theory
The Journal of Chemical Thermodynamics, 2008Co-Authors: Sabbah Bouguerra, Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract Values of partial molar volumes at infinite dilution of 9 inorganic and 4 organic 1:1 electrolytes have been determined in (water + ethylammonium nitrate) (EAN) binary at 298.15 K throughout the Composition Scale. Our theoretical analysis shows that the values of partial molar volumes at infinite dilution of a solute in a binary are linked to those of the partial molar volumes of the components of mixed solvent. This applies to mixtures of molecular solvents as well as (water + ionic liquid) media. The use of the “pseudo-lattice theory” of Bahe recently supplemented Varela can be used for calculations and to obtain information about the interactions between 1:1 electrolytes as solutes at infinite dilution and their concentrated saline environment. We show that the “pseudo-lattice theory” allows accurate description of the behaviours of symmetrical tetraalkylammoniums bromide between the infinitely dilute state and concentrations higher than 2 mol · L−1.
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part i thermodynamic analysis of volumetric properties of concentrated aqueous solutions of 1 butyl 3 methylimidazolium tetrafluoroborate 1 butyl 2 3 dimethylimidazolium tetrafluoroborate and ethylammonium nitrate based on pseudo lattice theory
The Journal of Chemical Thermodynamics, 2007Co-Authors: Ibrahim Bou Malham, Pierre Letellier, Alain Mayaffre, Mireille TurmineAbstract:Abstract This study concerns volumetric behaviour of mixtures between water and three ionic liquids: 1-butyl-3-methylimidazolium tetrafluoroborate (bmimBF 4 ), 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (bdmimBF 4 ), and ethylammonium nitrate (EAN). We report that the pseudo-lattice theory proposed by Bahe and recently supplemented by Varela et al . can suitably describe the partial molar volume of ionic liquids throughout the Composition Scale from the infinitely dilute state to the pure room temperature molten salt. In this approach, the ions of 1:1 electrolytes in concentrated solutions are supposed to be distributed in a face-centred-cubic structure. The main advantage of this approach is that, contrary to Debye–Huckel approach, it widens the range of Composition that can be described to high concentration salt solutions (several times molar) and also the most diluted salt solutions.