Results 311 to 320 of about 429,334 (349)
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Synthesis of kaolinite from micas and K-depleted micas

Clays and Clay Minerals, 2007
AbstractThe weathering stages of K-depleted biotite, K-depleted phlogopite, and natural biotite were investigated using hydrothermal treatment with A1C13 solution at 200°C for 12 to 72 h. Although there were some differences in the degree of weathering of the two K-depleted micas, both first transformed to hydroxy-Al interlayered vermiculite (HIV ...
Cho, Yunchul, Komarneni, Sridhar
openaire   +4 more sources

Description of two new MICA alleles: MICA*058 and MICA*002:03

Tissue Antigens, 2011
We describe two novel alleles, MICA*058 and MICA* 002:03.
Medhat Askar   +4 more
openaire   +3 more sources

MICA: A Learning Curve

The Journal of Foot and Ankle Surgery, 2020
Techniques of minimally invasive bunion surgery have become increasingly popular in recent years. However, the learning curve involved in mastering these innovative techniques has not been described. To address this issue, a trained foot and ankle surgeon in a university hospital operated on 50 patients using the minimally invasive Chevron and Akin ...
Ezequiel Palmanovich   +6 more
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On the Chemical Classification of the Mica Group. II. The Basic Micas

Mineralogical Magazine and Journal of the Mineralogical Society, 1925
In the first part of this paper it was shown that the acid section of the mica group could be divided into two main series, the potash micas and the lithia micas. The molecular ratio of potash to silica was 1 : 6 and the micas were therefore represented as salts of an acid characterized by this value.
openaire   +2 more sources

Structural Features of Micas

Reviews in Mineralogy and Geochemistry, 2002
The large number of mica species (end-members) and varieties is based on chemical variability and peculiar structural features like polytypism, local and global symmetry. In addition, mainly because of an inherent misfit between the constituent tetrahedral and octahedral sheets, in the specific mica structures several structural parameters undergo ...
FERRARIS, Giovanni, IVALDI G.
openaire   +3 more sources

Infrared Spectroscopy of Micas

Reviews in Mineralogy and Geochemistry, 2002
Infrared (IR) spectroscopy can provide information about details of the atomic structure, lattice dynamics and the chemistry of mineral phases that may not be readily obtained from other analytical techniques. IR spectra originate in transitions between vibrational energy levels of vibrating atomic groups and they are observed as absorption spectra ...
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Mica Weathering Rates as Related to Mica Type and Composition [PDF]

open access: possibleClays and Clay Minerals, 1970
AbstractPotassium release rates from micas varying widely in type and composition were measured. A sodium tetraphenylboron solution was used as the extracting agent. Muscovites were found to be two orders of magnitude more stable than a naturally occurring phlogopite and biotite. Synthetic fluorphlogopite was as stable as some muscovites.
R. A. Leonard, R. A. Leonard
openaire   +1 more source

MICA polymorphism in a northern Chinese Han population: The identification of a new MICA allele, MICA*059

Human Immunology, 2010
The major histocompatibility complex class I chain-related gene A (MICA) in humans, located 46 kb centromeric to human leukocyte antigen (HLA)-B, is highly polymorphic. In addition to its primary role in immune surveillance, recent data highlight the importance of MICA in organ transplantation and in susceptibility to some diseases.
Wei Tian, L. X. Li, Jin H. Cai, F. Wang
openaire   +3 more sources

Pillared Clays and Micas

MRS Proceedings, 1987
AbstractThe interest in the petroleum industry in converting heavier feeds to liquid fuels has led to a search for microporous materials with pore sizes larger than those found in the faujasitic zeolites which form the basis of many petroleum processing catalysts.
John F. Brody, Jack W. Johnson
openaire   +4 more sources

The MHC class I MICA gene is a histocompatibility antigen in kidney transplantation

Nature Medicine, 2022
Raphael Carapito   +2 more
exaly  

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