Sulfur is a key element in terrestrial magmatic processes yet its geochemical behavior remains one of the most difficult to model due heterovalent chemistry. The maximum amount sulfur silicate melt can dissolve before saturating with sulfide (e.g., pyrrhotite) or sulfate anhydrite) changes redox state system and has important implications for budget system. Several empirical models have been de...

Abstract Safe Underground Gas Storage (UGS) can be achieved in artificial, salt caverns to meet fluctuations energy demand by providing adequate knowledge on rock when subjected similar cyclic conditions. In this study, we performed mechanical tests five samples with different types and amounts of second-phase mineral content. A confining pressure 25 MPa was applied, whilst the axial stress cyc...

MIL03346 meteorite: It is a martian meteorite (nakhlite) collected from Miller Range, Antarctica. It contains variety of hydrous Caand Fe 3+ -sulfates, and other H2O/OH-bearing species, thus has been extensively studied, with a purpose to build the links to aqueous alteration processes on Mars [4-9]. The martian origin of Ca-sulfates and jarosites in MIL 03346 is validated by the finding of the...

ABSTRACT: Extreme swelling pressures (in excess of 5 MPa) were measured against the invert of a tunnel excavated by drill and blast method in a hard claystone containing variable proportions of anhydrite and gypsum dispersed in the clay matrix. When the invert was not present, floor heave reached displacements in excess of 60 cm in some cross sections. Displacements and pressures developed at a...

Abstract Climate models for Venus rely heavily on theoretical modeling and laboratory experimentation due to the extreme surface conditions of planet limited in situ data. To better explore relative importance reactions between atmosphere Venus, we exposed representative volcanic glasses basaltic minerals a large‐scale simulation with realistic atmospheric composition. This study consistend two...

background and aim: basal cell carcinoma (bcc) is the most common skin neoplasm and the most common type of cancer. since the incidence of injury is taken into consideration in the pathologic diagnosis, the study of clinical and microscopic views of bcc is of particular importance. the present study aimed at determining the frequency of clinical and microscopic views of bcc in a 10-year period ...

fahr’s disease is a rare syndrome characterized by symmetrical and bilateral intracranial calcifications. we report a 21-year-old male who presented with aggression, talkativeness, restlessness, and insomnia of recent onset. his neurological examination was normal. mental status examination and clinical investigation revealed mania. brain revealed symmetrical large areas and foci of calcificati...