The compounds, lanthanium chromite, lanthanium magnetite and lanthanium ferric oxide were prepared through sol-gel methods in powdered form, then calcinated, peletized, and sintered at various temperatures. Electrical conductivity of these compounds was measured at various temperatures. The effectiveness of strontium as a dopant on electrical conductivity was also investigated. Electrical condu...

Abstract Isotope variations of nucleosynthetic origin among solar system solid samples are well documented, yet the these is still uncertain. The observed variability 54 Cr materials formed in different regions protoplanetary disk has been attributed to variable amounts presolar, chromium-rich oxide (chromite) grains, which exist within meteoritic stardust inventory and most likely originated f...

The Tissint meteorite is a geochemically depleted, olivine-phyric shergottite. Olivine megacrysts contain 300–600 lm cores with uniform Mg# (~80 1) followed by concentric zones of Fe-enrichment toward the rims. We applied a number of tests to distinguish the relationship of these megacrysts to the host rock. Major and trace element compositions of the Mg-rich core in olivine are in equilibrium ...

BACKGROUND The present work aimed at to describe hearing threshold based on audiometry data of the mine workers based on their age, work station and years of working of an open cast chromite mine in Odisha, India at high fence. MATERIALS AND METHODS A cross-sectional study of hearing threshold of the subjects of the chromite mine was carried out. Audiometric data of 500 subjects were taken fr...

A chromite occurrence called the Sabantuy paleoplacer was discovered in Southern Pre-Ural region, at east edge of East-European Platform transitional zone to Ural Foredeep. ca. 1 m-thick chromite-bearing horizon is traced a depth 0.7–1.5 m from earth’s surface for area 15,000 m2. The chromspinel content sandstones reaches 30–35%, maximum values Cr2O3 are 16–17 wt.%. grain size detrital ranges 0...

A-site deficient chromite La0.65Sr0.3Cr0.85Ni0.15O3−δ (L65SCrN) decorated by in situ Ni exsolution was implemented as fuel electrode on 5 cm × reversible electrolyte-supported solid oxide cells (rSOCs).

Dozens of epidemiologic studies have been conducted since the late 1940s in an attempt to elucidate the relationship between exposure to chromium compounds and increased rates of certain cancers observed in several industries. The relationship between employment in industries producing chromium compounds from chromite ore and lung cancer has been well established in numerous studies. The relati...