Results 61 to 70 of about 1,452,203 (200)

Phase Relations in the Li2O-V2O3-V2O5 System at 700 C: Correlations with Magnetic Defect Concentration in Heavy Fermion LiV2O4

open access: yes, 2006
The phase relations in the Li2O-V2O3-V2O5 ternary system at 700 C for compositions in equilibrium with LiV2O4 are reported. This study clarified the synthesis conditions under which low and high magnetic defect concentrations can be obtained within the ...
A. Manthiram   +11 more
core   +1 more source

The Experimental and Modeling Study on the Thermodynamic Equilibrium Hydrate Formation Pressure of Helium-Rich Natural Gas in the Presence of Tetrahydrofuran

open access: yesMolecules
Hydrate-based gas separation (HBGS) has good potential in the separation of helium from helium-rich natural gas. HBGS should be carried out under a pressure higher than the thermodynamic equilibrium hydrate formation pressure (Peq) to ensure the ...
Zengqi Liu   +8 more
doaj   +1 more source

The Effect of Salinity on the Strength Behavior of Hydrate-Bearing Sands

open access: yesJournal of Marine Science and Engineering, 2023
The first prerequisite for the efficient and safe exploitation of gas hydrate resources is to accurately analyze the primary mechanical performance of hydrate-bearing sediments (HBSs).
Shi Shen   +4 more
doaj   +1 more source

Continuous- and discrete-time Glauber dynamics. First- and second-order phase transitions in mean-field Potts models

open access: yes, 2013
As is known, at the Gibbs-Boltzmann equilibrium, the mean-field $q$-state Potts model with a ferromagnetic coupling has only a first order phase transition when $q\geq 3$, while there is no phase transition for an antiferromagnetic coupling.
Mukhamedov, F., Ostilli, M.
core   +1 more source

Physicochemical foundations for soil mechanics

open access: yesYantu gongcheng xuebao
Soil's matrix-water interactions play an unprecedented role in controlling the physicochemical behaviors and mechanical properties of soils. Such physicochemical processes, however, have long been ignored or inadequately expressed in the classical soil ...
WEI Changfu
doaj   +1 more source

Non-equilibrium phase transition in negotiation dynamics [PDF]

open access: yes, 2007
We introduce a model of negotiation dynamics whose aim is that of mimicking the mechanisms leading to opinion and convention formation in a population of individuals.
A. Baronchelli   +10 more
core   +3 more sources

Influence of Gas Composition on Gas Hydrate Stability Zones in the Northern South China Sea

open access: yesJournal of Marine Science and Engineering
Evaluation of gas hydrate stability in marine sediments is commonly conducted assuming pure methane systems, although increasing drilling and logging evidence indicates that natural gas hydrates frequently contain minor amounts of heavier hydrocarbons ...
Qian Huang   +3 more
doaj   +1 more source

Phase diagram for the asymmetric nuclear matter in the multifragmentation model

open access: yes, 2009
We assume that, in equilibrium, nuclear matter at reduced density and moderate finite temperature, breaks up into many fragments. A strong support to this assumption is provided by date accumulated from intermediate energy heavy ion collisions. The break-
F. Reif, G. Chaudhuri, S. Das Gupta
core   +1 more source

Phase Equilibrium Dynamic Model and Thermodynamic Behavior of Tight Gas Hydrate

open access: yesShiyou jixie, 2021
Natural gas is easy to form hydrate and continuously accumulate in the process of flowing in wellbore and pipeline. Therefore, this article presents a calculation method of liquid and gas phase fugacity based on Van Laar mixing rule PRSV2 state equation,
Liu Chunhua   +5 more
doaj  

The thermodynamics of phase equilibrium [PDF]

open access: yesAnnals of Physics, 1961
Abstract Thermodynamics is usually subdivided into a theory dealing with equilibrium and into one concerned with irreversible processes. In the present paper this subdibvision is carried further and the Gibbsian thermodynamics of phase equilibrium is distinguished from the thermodynamics of Clausius and Kelvin.
openaire   +2 more sources

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