Martian meteorites are the only available samples that can be directly measured to constrain geological evolution of Mars. It has been suggested oxygen fugacity (fO2) martian shergottite meteorites, which have low (∼7 wt.%) high-MgO (∼30 compositions, correlates with incompatible trace element enrichment (i.e., La/Yb), and 87Sr/86Sr, 143Nd/144Nd, 187Os/188Os 176Hf/177Hf at time crystallization....

INTRODUCTION Several studies have demonstrated the usefulness of Synchrotron micro x-ray absorption near edge structure (XANES), or (SmX) spectroscopy, to determine the oxidation state of elements in planetary materials. Delaney et al. [1] used SmX to investigate the oxidation states Fe, Cr, and V in extraterrestrial samples, and later determined the oxidation state of V in experimental glasses...

the srk two-parameter cubic equation of state has been used for the calculation of the equilibrium constant using the liquid and vapor fugacity coefficients for three binary mixtures. dew and bubble points have been determined using the equilibrium constants and the phase envelope has been plotted showing dearly that retrograde condenstaion occurs. the following percent deviations have been obt...

Abstract We performed a series of experiments at 1 atm pressure and temperatures 1300–1500 °C to determine the effect oxygen fugacity on oxidation state Fe in synthetic martian basalt. Ferricferrous ratios were determined quenched glasses using Mössbauer spectroscopy. Following conventional doublet assignments spectrum, we obtain Fe3+/ΣFe value 0.19 1450 an corresponding QFM buffer. If apply Be...

The coordinate-momentum double distribution function ρ(r,p)drdp is calculated in the local density approximation for bosons with positive scattering length a in a trap. The calculation is valid to the first order of a. To clarify the meaning of the result, it is compared for a special case with the double distribution function ρwd rdp of Wigner. Using the local density approximation (LDA) [1,2]...

We study the algorithmic applications of a natural discretization for hard-sphere model and Widom–Rowlinson in region $$d $$ -dimensional Euclidean space \mathbb {V} \subset {R} ^{d}$$ . These continuous models are frequently used statistical physics to describe mixtures one or multiple particle types subjected hard-core interactions. For each type, particles distributed according Poisson point...