Results 11 to 20 of about 6,013 (277)
Gold in biogenic apatites of the Baltic-Ladoga phosphorite basin [PDF]
Записки Горного института, 2022 The distribution of gold in biogenic apatites from the Ordovician deposits in the northwest of the East European Platform shows that the maximum concentration of gold in apatites is found within the Ladoga-Baltic suture zone.
Sergey B. Felitsyn, Nadezhda A. Alfimova
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Chemical Diversity of Apatites [PDF]
Advances in Science and Technology, 2006 Apatites can accommodate a large number of vacancies and afford multiple ionic substitutions determining their reactivity and biological properties. Unlike other biominerals they offer a unique adaptability to various biological functions. The diversity of apatites is essentially related to their structure and to their mode of formation. Special charge
Rey, Christian +3 more
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Acta Crystallographica Section B Structural Science, 2007 Apatites commonly adopt P63/m hexagonal symmetry. More rarely, monoclinic chemical analogues have been recognized, including the biologically significant hydroxyapatite, Ca10(PO4)6(OH)2, but the driving force towards lower symmetry has not been systematically examined.
Baikie, T +7 more
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Journal of Dental Research, 1974 Hydroxyapatite, fluorapatite, and chlorapatite materials were synthesized and their sintering characteristics were studied. The compressive strength of the apatites was determined and is given as a function of density. Scanning electron micrographs of the typical material structure are given.
W R, Rao, R F, Boehm
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The crystallographic structure of dental enamel and related apatites [PDF]
, 1964 PhDSynthetic, biological and mineralogical carbonate-containing apatites have been studied, principally by infra-red absorption spectroscopy (using polarised or unpolarised radiation), The substitution of a carbonate ion for two hydroxyl ions in the ...
Elliott, James Cornelis
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Acta Crystallographica Section B Structural Science, 2010 Certain complex structures are logically regarded as intergrowths of chemically or topologically discrete modules. When the proportions of these components vary systematically a polysomatic series is created, whose construction provides a basis for understanding defects, symmetry alternation and trends in physical properties.
Tom Baikie +7 more
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Structural properties of apatites from Finland studied by FTIR spectroscopy [PDF]
Bulletin of the Geological Society of Finland, 1998 Studies by XRD and FTIR analyses of the structure of Sokli and Siilinjärvi apatites and a comparison with the Kola and Kovdor apatites are presented.
M. Veiderma, R. Knubovets, K. Tõnsuaadu
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Molecules, 2022 Developments in the field of nanostructures open new ways for designing and manufacturing innovative materials. Here, we focused on new original ways of calculating energy changes during the substitution of foreign ions into the structure of apatites and
Andrzej Kuczumow +8 more
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Journal of Asian Ceramic Societies, 2021 This study aimed to investigate the synthesis, cytotoxicity, and antimicrobial activity of nanorod apatites obtained using different surfactants at their critical micelle concentrations via hydrothermal method.
Ssu-Meng Haung +5 more
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Journal of Economic Geology, 2022 Introduction The Bafq mining district (BMD) in the Kashmar-Kerman tectonic zone hosts ~34 magnetite-hematite-apatite ore deposits with about 1500 Mt of reserves in the central Iran (Torab, 2008).
kiamars hosseini +2 more
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