Molar volume dependence of the nuclear magnetism of bcc solidHe3

1987 ◽  
Vol 58 (4) ◽  
pp. 381-384 ◽  
Author(s):  
Y. Miura ◽  
N. Nishida ◽  
Y. Takano ◽  
H. Fukuyama ◽  
H. Ishimoto ◽  
...  
Keyword(s):  
Molar Volume ◽  
Nuclear Magnetism ◽  
Volume Dependence

Molar volume dependence of nuclear magnetic ordering in solid 3He

1983 ◽  
Vol 31-34 ◽  
pp. 737-738 ◽  
Author(s):  
T. Hata ◽  
S. Yamasaki ◽  
M. Taneda ◽  
T. Kodama ◽  
T. Shigi
Keyword(s):  
Molar Volume ◽  
Magnetic Ordering ◽  
Volume Dependence ◽  
Solid 3He ◽  
Nuclear Magnetic

Molar Volume Dependence of Static Magnetization and Ordering Temperature in bcc SolidHe3

1983 ◽  
Vol 51 (17) ◽  
pp. 1573-1576 ◽  
Author(s):  
T. Hata ◽  
S. Yamasaki ◽  
M. Taneda ◽  
T. Kodama ◽  
T. Shigi
Keyword(s):  
Molar Volume ◽  
Static Magnetization ◽  
Volume Dependence

Molar volume dependence of the thermal conductivity in mixed cryocrystals

2002 ◽  
Vol 28 (2) ◽  
pp. 136-139 ◽  
Author(s):  
V. A. Konstantinov ◽  
E. S. Orel ◽  
V. P. Revyakin
Keyword(s):  
Thermal Conductivity ◽  
Molar Volume ◽  
Volume Dependence

Molar volume dependence of the pressure of solid 3He at very low temperature

1983 ◽  
Author(s):  
T. Mamiya ◽  
A. Sawada ◽  
H. Fukukuyama ◽  
K. Iwahashi ◽  
Y. Masuda
Keyword(s):  
Low Temperature ◽  
Molar Volume ◽  
Volume Dependence ◽  
Solid 3He ◽  
Very Low Temperature

VOLUME DEPENDENCE OF OPTICAL TRANSITIONS IN GaAs : PHOTOMODULATED REFLECTIVITY

1984 ◽  
Vol 45 (C8) ◽  
pp. C8-57-C8-60 ◽  
Author(s):  
M. Hanfland ◽  
K. Syassen ◽  
N. E. Christensen
Keyword(s):  
Optical Transitions ◽  
Volume Dependence

Volume dependence of high-Tc superconductors

1988 ◽  
Vol 153-155 ◽  
pp. 403-404
Author(s):  
R. Griessen ◽  
A. Driessen ◽  
H. Hemmes ◽  
R. Wijngaarden
Keyword(s):  
High Tc Superconductors ◽  
High Tc ◽  
Volume Dependence

scholarly journals Behavior and properties of water in silicate melts under deep mantle conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bijaya B. Karki ◽  
Dipta B. Ghosh ◽  
Shun-ichiro Karato
Keyword(s):  
Electrical Conductivity ◽  
Molar Volume ◽  
Water Solution ◽  
Pure Water ◽  
Electrical Conductance ◽  
Water Structure ◽  
Bulk Water ◽  
Silicate Melts ◽  
Pressure Regime ◽  
Low Pressures

AbstractWater (H2O) as one of the most abundant fluids present in Earth plays crucial role in the generation and transport of magmas in the interior. Though hydrous silicate melts have been studied extensively, the experimental data are confined to relatively low pressures and the computational results are still rare. Moreover, these studies imply large differences in the way water influences the physical properties of silicate magmas, such as density and electrical conductivity. Here, we investigate the equation of state, speciation, and transport properties of water dissolved in Mg1−xFexSiO3 and Mg2(1−x)Fe2xSiO4 melts (for x = 0 and 0.25) as well as in its bulk (pure) fluid state over the entire mantle pressure regime at 2000–4000 K using first-principles molecular dynamics. The simulation results allow us to constrain the partial molar volume of the water component in melts along with the molar volume of pure water. The predicted volume of silicate melt + water solution is negative at low pressures and becomes almost zero above 15 GPa. Consequently, the hydrous component tends to lower the melt density to similar extent over much of the mantle pressure regime irrespective of composition. Our results also show that hydrogen diffuses fast in silicate melts and enhances the melt electrical conductivity in a way that differs from electrical conduction in the bulk water. The speciation of the water component varies considerably from the bulk water structure as well. Water is dissolved in melts mostly as hydroxyls at low pressure and as –O–H–O–, –O–H–O–H– and other extended species with increasing pressure. On the other hand, the pure water behaves as a molecular fluid below 15 GPa, gradually becoming a dissociated fluid with further compression. On the basis of modeled density and conductivity results, we suggest that partial melts containing a few percent of water may be gravitationally trapped both above and below the upper mantle-transition region. Moreover, such hydrous melts can give rise to detectable electrical conductance by means of electromagnetic sounding observations.

Sorption of phenols on hexadecyltrimethylammonium- modified bentonite: Application of Polanyi−Manes potential theory

2020 ◽  
pp. 0958305X2097728
Author(s):  
Jiyeon Choi ◽  
Dong-Ik Slong ◽  
Won Sik Shin
Keyword(s):  
Molar Volume ◽  
Potential Theory ◽  
Characteristic Curve ◽  
Chemical Compositions ◽  
Pore Filling ◽  
Sorption Data ◽  
Similar Chemical ◽  
Competitive Model ◽  
Sorption Potential ◽  
Sorption Systems

This study investigated the sorption of phenol and 4-chlorophenol (4-CP) on natural bentonite modified with hexadecyltrimethylammonium (HDTMA) cation. The Freundlich, Langmuir, Dubinin−Radushkevich (DR), Sips, and Polanyi−Dubinin−Manes (PDM) models fitted the sorption data well (R2 > 0.92). The Freundlich coefficient and the maximum sorbed amount of the Langmuir and PDM models of 4-CP were higher than phenol because of higher hydrophobicity (log Kow = 2.39 for 4-CP and 1.46 for phenol). The PDM model that includes solubility and molar volume was highly useful in predicting the sorption of phenols having widely different hydrophobicity and solubility. The characteristic curves, the plot of sorbed volume ( qv) versus the sorption potential per molar volume ( ε/ Vm) of 4-CP and phenol were distinctly different although they have similar chemical compositions. The selectivity of 4-CP (3.72) was higher than that of phenol (0.27) in binary sorption systems. The sorbed volume ( qv) in the binary sorption was remarkably reduced and the characteristic curve had wider distribution owing to competition in pore-filling. The sorption behaviors were elucidated by partitioning and pore-filling mechanisms. Among the tested binary sorption models, the modified Langmuir competitive model was the best in the prediction of the binary sorption (R2 > 0.98).

scholarly journals Determination of density and excess molar volume of dimethyl sulfoxide + 1-allyl-3-methylimidazolium chloride mixtures at high pressure

2017 ◽  
Vol 130 ◽  
pp. 76-83 ◽  
Author(s):  
Laura de Pablo Nisa ◽  
José J. Segovia ◽  
Ángel Martín ◽  
M. Carmen Martín ◽  
M. Dolores Bermejo
Keyword(s):  
High Pressure ◽  
Dimethyl Sulfoxide ◽  
Molar Volume ◽  
Excess Molar Volume
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