Trace metal content was measured in airborne particulates in Wve towns located in west central Nevada with an emphasis on Fallon, where 16 cases of childhood leukemia were diagnosed recently. Airborne dust samples were collected using portable, high-volume particulate air samplers, and each Wlter was chemically analyzed by acid-dissolution, inductively coupled plasma mass spectroscopy. Tungsten...

Copper is a metallic element that occurs naturally as the free metal, or associated with other elements in compounds that comprise various minerals. Most copper compounds occur in +1 Cu(I) and +2 Cu(II) valence states. Copper is primarily used as a metal or an alloy (e.g., brass, bronze, gun metal). Copper sulfate is used as a fungicide, algicide, and nutritional supplement. Copper particulates...

Metal matrix composites (MMCs) have superior mechanical strength and wear resistance as compared to base alloy. Aluminium matrix reinforced with low density discontinuous particulate composites has good potential in automobile and aerospace applications. The main challenge is to produce the light weight composite in a cost effective way to achieve the greater properties. In the present study, a...

Objectives: Idiopathic pulmonary fibrosis (IPF) (J84.1 by the International Statistical Classification of Diseases and Related Health Problems, 10th revision – ICD-10) is a rare disease of unknown cause. Among many risk factors, occupational exposure to metal dust is enumerated. Because of metal industry concentration in the Silesian Voivodeship, Poland, an attempt of spatial and temporal varia...

Context. The study of stars that evolve through the asymptotic giant branch (AGB) proves crucial in several astrophysical contexts because these objects provide important feedback to host system terms gas is poured into interstellar medium after being exposed contamination from nucleosynthesis processes, and dust forms their wind. Most studies conducted so far have been focused on AGB with sola...

The polytropic equation of state (EOS) of primordial gas clouds with modest enrichment is computed, motivated by the recent observations of very Fe-deficient stars, [Fe/H]∼ 10−10, such as HE 0107-5240 and CS 29498-043. These stars are overabundant, relative to Fe, in C and O. We assume that the observed abundances of species like C, O, Si and Fe are representative of the gas from which the curr...

Introduction: The principal solid precursor components of chondrules are nebular condensates and/or presolar interstellar grains. In either case, the precursors are most likely dominated by forsterite (Mg2SiO4), iron-nickel metal, Ca-aluminate phases, and a C-rich component [1-5]. It is reasonable to explore the consequences of enriching a solar gas in these components, on local scales in the e...