Solid-state Be-9 NMR of beryllium compounds

Despite the favorable NMR-spectroscopic features of the 9Be isotope, the exploration of solid Beryllium compounds by this method has been very limited, owing to safety concerns regarding their preparation and handling. The present review aims to be the first comprehensive one on this topic, summarizing the classical and modern methodologies available for determining the relevant 9Be NMR observables in the solid state. Results on molecular crystals, oxidic materials, and intermetallic systems will be discussed in terms of their informational content in relation to atomic and electronic structure and dynamics, leading to suggestions for future paths of investigation.

Floristerias processing of mineral raw materials and waste Yaroslavsky mining and beneficiation plant

The monograph presents general information on the main components of fluorite-containing ores and wastes and the results of studies on the possibility of complex processing of fluorite-containing mineral raw materials and wastes of the Yaroslavskiy ore-dressing combine with the extraction of beryllium compounds, alkali metals, fluoroammonium salts, as well as associated products in the form of gypsum, amorphous silica. Also, earlier studies related to this problem are summarized. The monograph is intended for specialists in the field of chemistry, chemical technology, ecology, scientists, graduate students, undergraduates involved in the complex processing of mineral raw materials and man-made wastes.

PARTICULARITIES OF THE IMMUNE RESPONSE IN PERSONS PROFESSIONNALLY EXPOSED TO BERYLLIUM

An examination was performed of 50 employees at an enterprise where they were in professional contact with beryllium. In most workers, it was detected an increase of interleukine-8, interferon- , growing level of immunoglobulin E and circulating immune complexes. It was shown that the contact with beryllium compounds leads to the interferon- level growth only in women. In men, alterations are identified in the direction of increased concentrations of common immunoglobulin E and circulating immune complexes.