Results 11 to 20 of about 543,793 (292)

Organically modified layered magnesium silicates to improve rheology of reservoir drilling fluids

Scientific Reports, 2020
Petroleum well drilling fluids are one of the most significant constituents in the subterranean drilling processes to meet an increasing global demand for oil and gas. Drilling fluids experience exceptional wellbore conditions, e.g.
Hasmukh A. Patel, A. Santra
semanticscholar   +1 more source

Elucidating the differences in the carbon mineralization behaviors of calcium and magnesium bearing alumino-silicates and magnesium silicates for CO2 storage

, 2020
Engineering the permanent storage of CO2 in earth-abundant Ca- and Mg-bearing silicate and alumino-silicate rocks and minerals as carbonates requires a fundamental understanding of the extents of carbonate conversion that can be achieved at conditions ...
G. Gadikota, J. Matter, P. Kelemen, P. Brady, A. Park   +4 more
semanticscholar   +1 more source

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

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

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

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
core   +3 more sources

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

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

Mechanical activation of magnesium silicates for mineral carbonation, a review

Minerals Engineering, 2018
Mechanical activation is one of the most efficient pretreatment methods used to accelerate the reaction rate in the mineral carbonation technology. This paper reviews the current research related to this technique with a specific focus on three types of ...
Jiajie Li, M. Hitch
semanticscholar   +1 more source

Interstellar and Ejecta Dust in the Cas A Supernova Remnant [PDF]

, 2014
Infrared continuum observations provide a means of investigating the physical composition of the dust in the ejecta and swept up medium of the Cas A supernova remnant.
Arendt, Richard G., Dwek, Eli, Hwang, Una, Kober, Gladys, Rho, Jeonghee   +4 more
core   +3 more sources