390 Result(s)
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Article
Hydrophobic interaction in water-ethanol mixtures
The solubility, free energy, entropy, and enthalpy of solutions of methane and ethane were determined in various mixtures of water and ethanol. The hydrophobic interaction for the pair methane-methane was comp...
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Article
Molar volumes and ion pairing of lithium halides in alcohols
The concentration dependence of the apparent molar volumes of lithium halides (and electrolytes in general) in alcohols (and solvents permitting association in general) is, in the first instance, due to change...
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Article
Solubilization of paraffin gases in aqueous solutions of sodium octanoate
The solubilities of methane, ethane, propane and n-butane were measured in aqueous solutions of sodium octanoate of molar concentrations between 0–0.8M. From these measurements we have computed the standard fr...
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Article
Solubility and thermodynamics of solution of argon in aqueous solutions of sodium octanoate and sodium dodecylsulfate
The ostwald absorption coefficient of argon was measured in aqueous solutions of two surfactants; sodium n-octanoate and in sodium dodecylsulfate, at several concentrations and at a few temperatures between 10...
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Article
Solubilization of methane, ethane, propane andn-butane in aqueous solutions of sodium dodecylsulfate
The solubilities of methane, ethane, propane, and n-butane were measured in aqueous solutions of sodium dodecylsulfate (NaDS) (0–0.1M) from 15 to 27°C. From these measurements the standard Gibbs energies, entr...
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Article
Synthesis and spectral properties of mixed binuclear complexes derived from the ion pentacyano(4,4′-bipyridine)ferrate(II)
New complex analogous to Prussian Blue were synthesized both in solid phase and in aqueous solution by mixing the sodium salt of pentacyano(4,4′-bipyridine)-ferrate(II) with Cu(II) and Fe(III) salts. Infrared ...
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Article
Synthesis, spectroscopy and thermal properties of the nickel(II), palladium(II) and copper(II) complexes of bis(aminoalkyl)-oxamides (=LH2) including the crystal structure of Cu2L(NO3)2
The synthesis of the NiII, PdII and CuII complexes of N, N′-bis(aminoalkyl)oxamides (LH2) is described and structures are proposed on the basis of their physical and spectroscopic properties. With NiII and PdII o...
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Article
Heteronuclear diatomic transition-metal cluster ions in the gas phase: Reactivity and thermochemistry of AgFe+
The gas-phase chemistry of AgFe+ was studied by using Fourier transform ion cyclotron resonance mass spectrometry. AgFe+ is unreactive with alkanes but reacts with cyclic and linear (C4–C8) alkenes. The primary r...
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Article
Thermo-Coulomb effects in mesoscopic tunnel junctions
We present a study of the thermoelectric effect in tunnel junctions. In particular we calculate the thermopower coefficientS and the Peltier coefficient π. For macroscopic junctions we demonstrate the sensitivity...
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Article
Book review
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Article
Measurement of pH in subcritical and supercritical aqueous systems
The use of yttria-stabilized zirconia (YSZ) electrodes of the type Hg/HgO/ZrO2(Y2O3)/H+, for measuring pH in aqueous solutions at high subcritical (150<T<374°C) and supercritical temperatures (T>374°C) is reviewe...
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Article
Nonrigid large van der Waals molecules
We address the breakdown of the (nearly) rigid molecule description of molecular structure and spectra, which is realized when the amplitude of atomic motion becomes comparable with the average bond length. Th...
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Article
Characteristics of quantum conductance in a quasi-one-dimension quantum wire containing cavity structures
Quantum-mechanical calculations of the conductance for model devices, consisting of dual semi-infinite quantum wires connected in series by a cavity, are carried out with use of the coupled-mode transfer metho...
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Article
Air microwave-induced plasma: Relation between ion density and atomic oxygen density
Electron temperature and ion density are measured in an air microwave-induced plasma (2450 MHz) by means of a floating double probe. A 'cinetic scheme for ion formation and decay is set up, and a relationship ...
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Article
Dinuclear complexes of (2,2′-bipyridine)(2,2′:6′,2′'-terpyridine)-ruthenium(II) bonded through cyanide to pentaammineruthenium(II/III) groups
New dinuclear complexes, containing a Ru(trpy)(bpy)2+ moiety (bpy = 2,2′-bipyridine, trpy = 2,2′:6′,2′'-terpyridine) bonded through cyanide to Ru(NH3) inf5 sup2+/3+ ...
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Article
Air microwave-induced plasma: Detection of NO in the post-discharge using an ArF laser
ArF laser-induced fluorescence (LIF) spectroscopy was applied to the investigation of the density of NO achieved in the post-discharge of an N2-O2 microwave-induced plasma (2450 MHz). The fluorescence spectrum pr...
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Article
Solitary excitations in antiferromagnet CsFeBr3
With employing the Dyson-Maleev transformation and the coherent-state ansatz, two partial different motion equations are obtained from Hamiltonian of antiferromagnet CsFeBr3. By using the method of multiple scale...
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Article
A kinetic study of methane conversion by a dinitrogen microwave plasma
Conversion of CH4 with a N2 microwave plasma (2.45 GHz) is studied. The experiments cover the absorbed microwave power range 300–700 W with 17–62% of methane in the gas mixture, with pressures of 10–40 mbar and f...
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Article
Etude du diagramme d’equilibre du systeme NaPO3−Pr(PO3)3
The NaPO3−Pr(PO3)3 system was studied by microdifferential thermal analysis (DTA), IR and X-ray diffraction spectroscopies. The only new compound observed in the system is NaPr(PO3)4, which melts incongruently at...
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Article
Etude de phosphates condenses diagramme d’equilibre du systeme AgPO3−Pr(PO3)3 Données sur AgPr(PO3)4
The AgPO3−Pr(PO3)3 system has been studied for the first time by differential thermal analysis, X-ray diffraction and IR spectroscopy. The system shows one compound AgPr(PO3)4 which melts in a peritectic decompos...
