Results 11 to 20 of about 29,742 (296)

Speciation of selected trace and major elements in lignite used in "Nikola Tesla A" power plant (Obrenovac, Serbia) [PDF]

Journal of the Serbian Chemical Society, 2005
Four samples of milled lignite used in the "Nikola Tesla A" power plant located in Obrenovac near Belgrade, were subjected to a five-step sequential extraction, comprising of the following phases: distilled water, 1M ammonium acetate, 0.2M ammonium ...
Popović Aleksandar R., Đorđević Dragana S.   +1 more
doaj   +3 more sources

OBTAINING OF THE MG2+ FORM OF THE ZEOLITE 4A WITH ION EXCHANGE OF MAGNESIUM SALTS [PDF]

Journal of Process Management and New Technologies, 2016
Zeolites are sodium alumino silicates which in in their composition contain zeolite water. They have a three-dimensional structure. Spatial structure defined by a strictly defined geometry of pores and cavities.
Blagica Cekova, Viktorija Bezhovska, Filip Jovanovski   +2 more
doaj   +1 more source

Geochemical behavior of chromium in minerals of high-Mg rocks, associated with granitoid massifs of the Urals

Литосфера, 2019
Research subject. High-magnesium rocks associated with the granitoid massifs of the Urals are represented by gabbro-diorites and their melanocratic varieties (hornblendites), as well as by diorites and quartz diorites.
S. V. Pribavkin, G. A. Кallistov, Т. A. Оsipova, I. A. Gottman, E. A. Zin’kova   +4 more
doaj   +1 more source

The Spitzer Spectroscopic Survey of S-type Stars [PDF]

, 2012
S-type AGB stars are thought to be in the transitional phase between M-type and C-type AGB stars. Because of their peculiar chemical composition, one may expect a strong influence of the stellar C/O ratio on the molecular chemistry and the mineralogy of ...
A. A. Zijlstra, Acke, Allamandola, Andersen, B. Acke, Begemann, Begemann, Blommaert, Brown, Cami, Cardelli, Carpenter, Cau, Chan, Cherchneff, Cherchneff, Chiar, D. Barry, D. Ladjal, DePew, Dijkstra, Drimmel, F. van Wyk, Fabian, Ferrarotti, Ferrarotti, G. C. Sloan, Gielen, Goebel, Groenewegen, Grossman, Guandalini, Gustafsson, H. Van Winckel, Henning, Heras, Herwig, Higdon, Hoefner, Hony, Hony, Höfner, Höfner, Iben, J. A. D. L. Blommaert, J. Cami, J. Menzies, J. Th. van Loon, Jaeger, Jura, Justtanont, K. Exter, K. Smolders, Keller, L. Decin, Lagadec, Lebzelter, Leisenring, Lorenz-Martins, M. A. T. Groenewegen, M. Desmet, M. Feast, M. Matsuura, Marshall, Martin, McCabe, McDonald, Mutschke, Mutschke, N. Cox, Onaka, P. de Cat, P. Degroote, P. Neyskens, Peeters, Pendleton, Piccirillo, Pitman, Pojmanski, Pojmański, Posch, Posch, R. Sahai, R. Østensen, Raskin, S. Bloemen, S. Hony, S. Saesen, S. Uttenthaler, S. Van Eck, Schutte, Sloan, Sloan, Sloan, Sloan, Sloan, Smith, Smolders, Stencel, T. Verhoelst, Tielens, Treffers, Uttenthaler, Van Eck, Van Eck, van Loon, Vardya, Volk, W. Zima, Woitke, Woźniak, Zechmeister, Zhukovska, Zijlstra   +113 more
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Mechanism of CaF₂ under Vacuum Carbothermal Conditions for Recovering Nickel, Iron, and Magnesium from Garnierite

Metals, 2020
Nickel laterite ore is divided into three layers and the garnierite examined in this study belongs to the third layer. Garnierite is characterized by high magnesium and silicon contents.
Qiang Wang, Xupeng Gu, Tao Qu, Lei Shi, Mingyang Luo, Bin Yang, Yongnian Dai   +6 more
doaj   +1 more source

Sol–gel synthesis and characterization of barium (magnesium) aluminosilicate glass sealants for solid oxide fuel cells [PDF]

, 2011
Solid oxide fuel cells (SOFC) correspond to efficient energy conversion systems coupled with low emissions of pollutants. In the aim to fabricate high temperature planar SOFC, glass and glass-ceramic sealants are developed to associate several criteria ...
Ansart, Florence, Antoine, L., Dailly, Julian, Lenormand, Pascal, Puig, Jean   +4 more
core   +1 more source

Re‐evaluation of calcium silicate (E 552), magnesium silicate (E 553a(i)), magnesium trisilicate (E 553a(ii)) and talc (E 553b) as food additives

EFSA Journal, 2018
The EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) provides a scientific opinion re‐evaluating the safety of calcium silicate (E 552), magnesium silicate (E 553a) and talc (E 553b) when used as food additives.
EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS), Maged Younes, Peter Aggett, Fernando Aguilar, Riccardo Crebelli, Birgit Dusemund, Metka Filipič, Maria Jose Frutos, Pierre Galtier, David Gott, Ursula Gundert‐Remy, Gunter Georg Kuhnle, Jean‐Charles Leblanc, Inger Therese Lillegaard, Peter Moldeus, Alicja Mortensen, Agneta Oskarsson, Ivan Stankovic, Ine Waalkens‐Berendsen, Rudolf Antonius Woutersen, Matthew Wright, Polly Boon, Rainer Gürtler, Pasquale Mosesso, Dominique Parent‐Massin, Paul Tobback, Dimitrios Chrysafidis, Ana Maria Rincon, Alexandra Tard, Claude Lambré   +29 more
doaj   +1 more source

Dust absorption and scattering in the silicon K-edge [PDF]

, 2019
The composition and properties of interstellar silicate dust are not well understood. In X-rays, interstellar dust can be studied in detail by making use of the fine structure features in the Si K-edge.
Costantini, E., de Groot, F., de Vries, C. P., Mohr, P., Mutschke, H., Rogantini, D., Tielens, A. G. G. M., Zeegers, S. T.   +7 more
core   +3 more sources

The effects of MgO, Na2O and SO3 on industrial clinkering process: phase composition, polymorphism, microstructure and hydration, using a multidisciplinary approach [PDF]

, 2019
Preprint publicado en: Materials Characterization Volume 155, September 2019, 109809The present investigation deals with how minor elements (their oxides: MgO, Na2O and SO3) in industrial kiln feeds affect (i) chemical reactions upon clinkering, (ii ...
Alessandro, Pavese, Gomez-de-la-Torre, Maria de los Angeles, Marco, Cantaluppi, Matteo, Galimberti, Maurizio, Marchi, Nicoletta, Marinoni, Segata, Monica   +6 more
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Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates [PDF]

Pesquisa Agropecuária Brasileira, 2019
: The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of rice blast on panicles, milling yield, and whole grains, vitreous grains, and ...
Lillian Matias de Oliveira, Enio Marchesan, Ricardo de David, Isabel Schlegel Werle, Bruno Behenck Aramburu, Gabriel Donato, Anelise Lencina da Silva, Ivan Francisco Dressler da Costa   +7 more
doaj   +1 more source