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Medvedevskikh S.V.,Ural Research Institute of Metrology | Medvedevskikh M.Y.,Ural Research Institute of Metrology | Karpov Y.A.,State Research and Design Institute of Rare Metal Industry Giredmet
Measurement Techniques | Year: 2015

We present a model to estimate the uncertainty of results in reproducing units of water content in solid and liquid substances and materials. An algorithm is described for implementing this approach. By using direct thermogravimetric and chemical methods, sources of uncertainty are clarified. We present composition, scope of application, and metrological characteristics of the State Primary Sstandard of mass fraction and mass (molar) concentration of water in solid and liquid substances and materials GET 173-2013. © 2015, Springer Science+Business Media New York. Source


Turkin A.A.,Moscow State University | Chizhov A.S.,Moscow State University | Seregina I.F.,Moscow State University | Filatova D.G.,Moscow State University | Karpov Y.A.,State Research and Design Institute of Rare Metal Industry Giredmet
Inorganic Materials | Year: 2015

An approach to determination of modifying additives in new materials based on SnO2 in solutions using inductively coupled plasma mass spectrometry (ICP-MS) after microwave digestion in a mixture of acids is proposed. On the basis of the studies performed, a method of determination of Au and Sb is developed with RSD = 0.06 and 0.08, respectively. This method can be used for validation of the results of solid-state analysis of new materials. © 2015 Pleiades Publishing, Ltd. Source


Muravyeva I.V.,National University of Science and Technology "MISIS" | Bebeshko G.I.,State Research and Design Institute of Rare Metal Industry Giredmet
Inorganic Materials | Year: 2014

The potentiometric determination of fluoride with the use of an Cyrillic capital letter EKOM-F ion-selective electrode in red muds (waste of aluminum production) is described. The accuracy of ionometric determination of fluorine is estimated. The results are supported by the "added-found" method and the method of varying the sample weight, as well as by a comparison with the results obtained by an independent procedure. © 2014 Pleiades Publishing, Ltd. Source


Baranovskaya V.B.,State Research and Design Institute of Rare Metal Industry Giredmet | Karpov Yu.A.,State Research and Design Institute of Rare Metal Industry Giredmet
Measurement Techniques | Year: 2011

The main requirements laid down in domestic and overseas standard documents for metrological provision of the activity of analytical laboratories are demonstrated on the example of the Giredmet analytical service. A comprehensive approach is considered for organizing the analytical service activity using a laboratory information management system and its role in metrological provisions. Results are summarized for modernization of a set of chemical analysis procedures for nonferrous, rare, and precious metals, high purity substances based upon them, nanomaterials, and semiconductors. © 2011 Springer Science+Business Media, Inc. Source


Kostyuchenko V.Y.,Novosibirsk State Technical University | Protasov D.Y.,RAS Semiconductor Physics Institute | Andrusov Y.B.,State Research and Design Institute of Rare Metal Industry Giredmet | Denisov I.A.,State Research and Design Institute of Rare Metal Industry Giredmet | Voitsekhovskii A.V.,Tomsk State University
Russian Physics Journal | Year: 2016

Photoconductivity in a magnetic field is studied for Faraday geometry on the p-type cadmium – mercury –tellurium films grown by liquid-phase epitaxy on cadmium – zinc – tellurium substrates. From the magnetic-field dependence of the photoconductivity signal under the film illumination from the side of the substrate or from the side of free surface, different values of mobility of minority carriers (electrons) are obtained. It is shown that for the mathematical description of the photoconductivity signal in a magnetic field, two types of electrons – “fast” and “slow” electrons, as well as “heavy” holes can be used. © 2016, Springer Science+Business Media New York. Source

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