Russia, associations

The element is found in niobite (or columbite), niobite-tantalite, parochlore, and euxenite. Large deposits of niobium have been found associated with carbonatites (carbon-silicate rocks), as a constituent of parochlore. Extensive ore reserves are found in Canada, Brazil, Nigeria, Zaire, and in Russia. 

Discovered in 1803 by Wollaston, Palladium is found with platinum and other metals of the platinum group in placer deposits of Russia, South America, North America, Ethiopia, and Australia. It is also found associated with the nickel-copper deposits of South Africa and Ontario. Palladium s separation from the platinum metals depends upon the type of ore in which it is found. 

Association of Engineers in Heating, Ventilation, Air Conditioning, Heat Supply, and Building Thermal Physics (Russia)... 

Although estimates of their abundances vary considerably, Pd and Pt (approximately 0.015 and 0.01 ppm respectively) are much rarer than Ni. They are generally associated with the other platinum metals and occur either native in placer (i.e. alluvial) deposits or as sulfides or arsenides in Ni, Cu and Fe sulfide ores. Until the 1820s all platinum metals came from South America, but in 1819 the first of a series of rich placer deposits which were to make Russia the chief source of the metals for the next century, was discovered in the Urals. More recently however, the copper-nickel ores in South Africa and Russia (where the Noril sk-Talnakh deposits are well inside the Arctic Circle) have become the major sources, supplemented by supplies from Sudbury. 

Silver is widely distributed in sulfide ores of which silver glance (argentite), Ag2S, is the most important. Native silver is sometimes associated with these ores as a result of their chemical reduction, while the action of salt water is probably responsible for their conversion into hom silver , AgCl, which is found in Chile and New South Wales. The Spanish Americas provided most of the world s silver for the three centuries after about 1520, to be succeeded in the nineteenth century by Russia. Appreciable quantities are now obtained as a byproduct in the production of other metals such as copper. 

He is a recognized expert in solid state and materials chemistry and environmental chemistry. He has active programs in solid state f-element chemistry and nanomaterials science. His current research interests include heavy metal detection and remediation in aqueous environments, ferroelectric nanomaterials, actinide and rare-earth metal sohd slate chemistry, and nuclear non-proliferation. He currently maintains a collaboration in nuclear materials with Los Alamos National Laboratory and a collaboration in peaceful materials science development with the Russian Federal Nuclear Center - VNIIEF, Sarov, Russia, U.S. State Department projects. He has published over 100 peer-reviewed journal articles, book chapters, and reviews, while presenting over 130 international and national invited lectures on his area of chemistry. Dr. Dorhout currently serves as Vice Provost for Graduate Studies and Assistant Vice President for research. He has also served as the Interim Executive Director for the Office of International Programs and as Associate Dean for Research and Graduate Education for the College of Natural Sciences at Colorado State University. 

Appleby, John H. Some of Arthur Dee s associations before visiting Russia clarified, including two letters from Sir Theodore Mayerne. Ambix 26 1-5. 

Honorary Professor of St. Petersburg University, Russia Honorary Member of Japan Society of Coordination Chemistry Honorary Member of Japan Association of Solution Chemists Medal of Vietnam Union of Science and Technology Associations... 

One major problem associated with aluminium and light alloy castings is the inability to completely eliminate the various production defects in their structure, such as gas cavities, porosity and intermetallic inclusions. The All-Russia Institute... 

Dubnium - the atomic number is 105 and the chemical symbol is Db. The name derives from the location of the Russian research center, the Joint Institute for Nuclear Research lab in Dubna , Russia. The first synthesis of this element is jointly credited to the American scientific team at the University of California in Berkeley, California imder Albert Ghiorso and the Russian scientific team at the JINR (Joint Institute for Nuclear Reactions) lab in Dubna, Russia, imder Georgi N. Flerov in 1970. The longest half-life associated with this unstable element is 34 second Db. 

Element 110 - no name has been proposed or accepted by lUPAC for element 110. This element was first synthesized in a November 1994 experiment by a multi-national team of scientists working at the Gesellschaft fur Schwerionenforschung (GSI) in Darmstadt, Germany. The scientific teams were from the GSI (Heavy Ion Research Center), Darmstadt, the Joint Institute for Nuclear Research (JINR), Dubna, Russia, Comenius University, Bratislava, Slovakia and the University of Jyvaskyla, Finland. They used the nuclear reaction ° Pb ( Ni, n) 110. The longest half-life associated vdth this unstable element is 1.1 minute 10. 

This deposit is located in the north-east of Russia and belongs to a gold-arsenic type of low-sulphide formation (Abramson et al, 1980). It lies within a carbonaceous terrigenous rock of Triassic age and is associated with a dome-shaped uplift in a node of intersecting faults of various directions. The ore bodies consist of zones of silicification and kaolinization with veinlet-disseminated sulphide mineralisation. Gold is present in the form of finely-dispersed dissemination in arsenopyrite and pyrite. As an example. Figure 1 illustrates the distribution of Au and Mn in connection with commercial ore... 

The final chapter in this volume covers the use of sulfur monochloride in the synthesis of heterocyclic compounds and is by O.A. Rakitin and L.S. Konstantinova (Zelinsky Institute, Moscow, Russia). It includes a survey of the extensive work carried out by these authors and other friends and associates of the late Charles Rees on heterocycles containing heterocycles with up to five sulfur atoms and often many nitrogen atoms. In addition, the chapter also shows how sulfur monochloride may be used advantageously in the synthesis of other sulfur heterocycles. 

Svetlana V. Smirnova was born in Yartsevo, Smolensk region, Russia. She graduated from MSU Chemistry Department, having specialization in analytical chemistry. She holds MS and PhD degrees from MSU. Her PhD thesis was devoted to the solvent extraction of amino acids. She works at the MSU Chemistry Department as an assistant professor (since 2002) and an associate professor (since 2005) giving the lectures and practice courses in analytical chemistry. Her scientific interests lie in the area of application of ionic liquids in extraction processes. She is the coauthor of more than 20 scientific publications. 

JNREG (Joint Norwegian -Russian Expert Group Report). 1997. Sources contributing to radioactive contamination of the Techa River and areas surrounding the Mayak production association, Urals, Russia. Norwegian Radiation Protection Authority, 134 pp. 

Phosphate glasses. Currently, Na-alumino-phosphate glass is produced in a Joule-heated ceramic melter at the RT-1 plant of Production Association Mayak , Ural region, Russia. This plant has a waste capacity of up to 500 L/h, and by the end of 1995, the plant has treated 1974 t of HLW, or 2.4676 x 10s Ci (Glagolenko et al. 1996 Vashman Polyakov 1997). The production of LIP glass is not yet implemented. 

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