Results 41 to 50 of about 1,604 (165)

Structural iron in dioctahedral and trioctahedral smectites: A polarized XAS study [PDF]

, 2015
International audienceThe chemical form of structural Fe in smectites influences many physicochemical properties of these clay minerals. Powder EXAFS data for structural Fe in smectites have been reported, however, the preferred orientation of clay ...
Finck, N., Bauer, A., Schlegel, M. L., Schlegel, M., L   +3 more
core   +1 more source

Scientific Opinion on the safety and efficacy of bentonite (dioctahedral montmorillonite) as feed additive for all species

EFSA Journal, 2011
Bentonite (dioctahedral montmorillonite) is an additive proposed to be authorised as a substance for the reduction of the contamination of feed by mycotoxins for all animal species at a recommended use level ranging from 0.05 and 0.3 % in complete feed ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

REGARDING THE USE OF BENTONITE CLAYS FROM THE CHERKASY DEPOSIT FOR SAFE RADIOACTIVE WASTE DISPOSAL IN NEAR-SURFACE LOW LEVEL WASTE STORAGE FACILTIES: RESEARCHES ON SORPTION PROPERTIES OF BENTONITES

Геохімія техногенезу, 2021
The article is devoted to the study of the barrier properties of bentonite clays from the Cherkasy deposit (Ukraine) as the most promising material for engineered barriers in near-surface disposal facilities for low-level radioactive waste.
B. Shabalin, Yaroshenko K.K., Marinich O.V., Koliabina I.L., Mitsiuk N.B., Buhera S.P.   +5 more
doaj   +1 more source

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

Alternatives options to improve integrated treatment of trophic ulcers of venous etiology and assessment of its effectiveness

Медицинский вестник Юга России, 2017
Objective: to improve the results of complex treatment of patients with trophic venous ulcers of the lower extremities by developing and introducing new methods of pharmacotherapy with morphological, immunohistochemical and biochemical evaluation of the ...
Sergei G. Grivenko, Vladimir V. Izosimov, Ervin E. Umerov   +2 more
doaj   +1 more source

The effectiveness of a probiotic containing Bifidobacterium longum BB-46 and Enterococcus faecium ENCfa-68 in the treatment of post-infectious irritable bowel syndrome. Prospective randomized comparative study

Терапевтический архив, 2022
Background. In the treatment of post-infectious irritable bowel syndrome (PI-IBS), the leading role belongs to the normalization of the composition of the intestinal microbiome, the disturbances of which are associated with previous intestinal infections.
Emiliya P. Yakovenko, Tatiana V. Strokova, Alexander N. Ivanov, Andrei V. Iakovenko, Irina Z. Gioeva, Malika A. Aldiyarova   +5 more
doaj   +1 more source

Polytype and polymorph identification of finely divided aluminous dioctahedral mica individual crystals with SAED. Kinematical and dynamical electron diffraction

, 2011
International audienceThis work investigates the potential of selected-area electron diffraction (SAED) for the polytype and polymorph identification of finely divided K-bearing aluminous dioctahedral mica.
Anne-Claire Gaillot, Drits, Victor A., Bruno Lanson, Lanson, Bruno, Gaillot, Anne-Claire, David R. Veblen, R. Veblen, David, Veblen, David R., Victor A. Drits, A. Drits, Victor   +9 more
core   +1 more source

The Role of Chlorate‐Driven Oxidative Weathering in Shaping Clay Deposits on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Oxidized clays and the widespread Al/Si‐over‐Fe/Mg stratigraphy on Mars imply prolonged water‐rock interactions and efficient oxidative weathering despite the largely anoxic conditions of Early Mars when most deposits formed during the climate optimum.
Jiawei Wang, Nicole M. Fernandez
wiley   +1 more source

New lead-free hybrid halometallates with dioctahedral anions synthesized using the template function of homopiperazine

, 2023
New organic-inorganic hybrid halometallates of the general formula (HpipeH2)-[M2X10] · 2H2O, where M = Sb, Bi; X = Br, I; Hpipe is homopiperazine (C5N2H12), were synthesized. The crystal structures of three new compounds, α-(HpipeH2)2[Sb2I10] · 2H2O (1),
Khrustalev V.N., Dorovatovskii P.V., Shestimerova T.A., Bykov M.A., Belova E.V., Shevelkov A.V., Bykov A.V., Goncharenko V.E., T. A. Shestimerova, E. V. Belova, V. N. Khrustalev, A. V. Bykov, M. A. Bykov, P. V. Dorovatovskii, A. V. Shevelkov, V. E. Goncharenko   +15 more
core   +1 more source

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli, T. M. Present, P. M. Vasconcelos, L. C. Kah, C. Swindle, S. Bhattacharjee, K. Farley   +6 more
wiley   +1 more source