منابع مشابه
apatite, and titanite
[1] Recent calibration studies have expanded the range of target minerals suitable for cosmogenic He dating to include U and Th‐rich phases such as zircon, apatite, and titanite. These minerals often contain large amounts of radiogenic He that present several analytical challenges for precise and accurate He determinations. In this paper we document the abundance sensitivity and changes in the ...
متن کاملApatite Glass-Ceramics: A Review
This article is a review of the published literature on apatite glass-ceramics (GCs). Topics covered include crystallization mechanisms of the various families of apatite GCs and an update on research and development on apatite GCs for applications in orthopedics, dentistry, optoelectronics, and nuclear waste management. Most apatite GCs crystallize through a homogenous nucleation and crystalli...
متن کاملApatite-type SrPr4(SiO4)3O
Single crystals of the title compound, strontium tetra-praseo-dymium tris-(silicate) oxide, SrPr(4)(SiO(4))(3)O, have been grown by the self-flux method using SrCl(2). The structure is isotypic with the apatite supergroup family having the generic formula (IX)M1(2) (VII)M2(3)((IV)TO(4))(3)X, where M = alkaline earth and rare earth metals, T = Si and X = O. The M1 site (3.. symmetry) is occupied...
متن کاملThe expanded amelogenin polyproline region preferentially binds to apatite versus carbonate and promotes apatite crystal elongation
The transition from invertebrate calcium carbonate-based calcite and aragonite exo- and endoskeletons to the calcium phosphate-based vertebrate backbones and jaws composed of microscopic hydroxyapatite crystals is one of the great revolutions in the evolution of terrestrial organisms. To identify potential factors that might have played a role in such a transition, three key domains of the vert...
متن کاملGelatin-Modified Biomimetic Apatite Coatings
Biomimetic coatings constituted of gelatin and nanocrystalline apatite were deposited on titanium substrates from a slightly supersaturated calcium phosphate (CaP) solution enriched with different amounts of gelatin. Although the biopolymer inhibits the crystallization of the inorganic phase, as shown by the reduction of the mean dimensions of the spherical aggregates and of the degree of cryst...
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ژورنال
عنوان ژورنال: Journal of Ion Exchange
سال: 1994
ISSN: 1884-3360,0915-860X
DOI: 10.5182/jaie.5.18