Eucrite meteorites are early-formed (>4.5 Ga) basaltic rocks that likely to derive from the asteroid 4 Vesta, or a similarly differentiated planetesimal. To understand trace element and moderately volatile (MVE) behavior more fully within between eucrites, laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) study is reported for plagioclase pyroxene, as well fusion crust vit...

All the shergottite meteorites display intense shock metamorphisms. Especially, plagioclase shows a characteristic shock feature: formation of diaplectic glass (maskelynite) or melting (Duke, 1968; McSween and Stoffler, 1980; McSween and Jarosewich, 1983). By studying the shergottite meteorites, we can get a better understanding of the nature of shock metamorphism of olivine, in comparison with...

Introduction: Ureilites are ultramafic, igneous achondrites, which contain olivine (ol), pyroxene, metal and carbon. About ~10 vol% dark interstitial, fine-grained matter is usually referred as vein material [1]. Ureilites have lost ~25% basalt [2] and most of their metallic iron. Presently, many authors assume that the majority of ureilites formed as asteroidal melting residues [3, 4]. Althoug...

Thrombin converts fibrinogen to fibrin monomer by cleaving fibrinopeptides A and B (FPA and FPB) from the amino terminal ends of the A (alpha) and B (beta) chains. A radioimmunoassay capable of measuring the A peptide in human blood as an index of thrombin action in vivo has been described previously. This paper describes the development of a radioimmunoassay for FPB and the use of both assays ...

Introduction: CM carbonaceous chondrites are samples of incompletely serpentinized fragments of primitive asteroids. These meteorites preserve a record of nebular and parent body processes. CMs are composed predominantly of high temperature anhydrous phases and low temperature serpentine family phyllosilicates. Modal data allows for a greater understanding of CM petrogenesis and for characteriz...

Projective toric varieties are described either by lattice polytopes in the character group of the torus, or by a polyhedral fan. In the latter case, the projective embedding is encoded by a piecewise linear function on the fan. We will generalize this concept to the case of torus actions of smaller dimension such as the action of (C) on Grass(2, n). The resulting description includes a direct ...

In advance of the arrival of the DAWN spacecraft at 4Vesta in 2011, it is useful to reassess our knowledge of the constitution and probable evolution of this ancient differentiated asteroid. It has been recognized for some time that the eucrite, diogenite and howardite meteorites likely represent samples from 4Vesta or from related Vestoids based upon the good match of reflectance spectra of th...

In this paper we analyse the robustness of (algebraic) multigrid preconditioners applied to linear systems arising from finite element approximations of elliptic PDEs with high-contrast coefficients. Problems with high-contrast coefficients are ubiquitous in porous media flow applications. Consequently, development of efficient solvers for high-contrast heterogeneous media has been an active ar...

Introduction: NWA 1068 is a 577g picritic shergottite found in the Moroccan Sahara in 2001[1]. The meteorite resembles several other picritic shergottites, e.g. EETA79001B, DaG476, SaU005 and Dho019, in major-element chemistry and mineralogy, but it differs significantly from these meteorites in REE distribution pattern. It has a slightly LREE-depleted pattern commonly shared by some olivine-fr...