Results 11 to 20 of about 112,374 (353)

Production, by co-grinding in a media mill, of porous biodegradable polylactic acid-apatite composite materials for bone tissue engineering [PDF]

open access: green, 2009
This paper presents the results of a study of the production of porous biodegradable composite materials by co-grinding, followed by scaffolding. Dry powders of polylactic acid and nanocrystalline carbonated apatite, analogous to bone mineral were co ...
Combes, Christèle   +6 more
core   +4 more sources

Triclinic apatites

open access: yesActa 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
openaire   +5 more sources

U–Pb Dating, Gemology, and Chemical Composition of Apatite from Dara-e-Pech, Afghanistan

open access: yesCrystals, 2023
Minerals of the apatite group commonly occur in granite pegmatites, and their ability to incorporate a wide range of trace elements makes them a good indicator of magma composition and magmatic–hydrothermal processes.
Biying Lai, Bo Xu, Yi Zhao
doaj   +1 more source

Ultrasonic Implantation of Bioactive Glass Particles into Poly(methyl methacrylate) Substrates [PDF]

open access: yes, 1995
Poly(methyl methacrylate) substrates were immersed in suspensions containing bioactive 50CaO・50SiO(2) (mol%) glass particles (45 μm in diameter) and a 6:4 (volume fraction) mixture of ethanol and THF, and an ultrasonic energy was applied to the system. A
Nishiyama, Chikako   +3 more
core   +1 more source

Constraining the long-term evolution of the slip rate for a major extensional fault system in the central Aegean, Greece, using thermochronology [PDF]

open access: yes, 2006
The brittle/ductile transition is a major rheologic boundary in the crust yet little is known about how or if rates of tectonic processes are influenced by this boundary.
Altherr   +57 more
core   +1 more source

Beneficiation of phosphate sludge rejected from Djebel Onk plant (Algeria) [PDF]

open access: yes, 2019
Purpose Flotation tests have been used in order to achieve the purposes of this study which are: To obtain the highest recovery with a maximum grade of P2O5 from the tailing generated by the phosphate plant of Djebel Onk in the East of Algeria.
Benselhoub, A   +3 more
core   +2 more sources

α-tricalcium phosphate/fluorapatite-based cement - promising dental root canal filling material [PDF]

open access: yesProcessing and Application of Ceramics, 2022
α-Tricalcium phosphate/fluorapatite (α-TCP/FAp) mixed powders were prepared in order to obtain dental root canal filling cements. Different liquids for cement pastes have been investigated and the most suitable one for obtaining rheologically optimal ...
Kazuz Abdul   +8 more
doaj   +1 more source

Gemological and Mineralogical Studies of Greenish Blue Apatite in Madagascar

open access: yesCrystals, 2022
Madagascar is known as the ‘Island of Gemstones’ because it is full of gemstone resources. Apatite from Madagascar is widely popular because of its greenish blue Paraiba-like color. This study analyzes apatite from Madagascar through standard gemological
Zhi-Yi Zhang   +3 more
doaj   +1 more source

Detrital zircon and apatite (U‐Th)/He geochronology of intercalated baked sediments: a new approach to dating young basalt flows [PDF]

open access: yes, 2011
Simple numerical models suggest that many basaltic lava flows should sufficiently heat the sediments beneath them to reset (U‐Th)/He systematics in detrital zircon and apatite.
Aciego   +32 more
core   +2 more sources

Quantitative Analysis of Apatite Formation on Titanium and Zirconia in a Simulated Body Fluid Solution Using the Quartz Crystal Microbalance Method

open access: yesAdvances in Materials Science and Engineering, 2017
The bone-bonding ability of a material is evaluated by examining apatite formation on its surface in simulated body fluid (SBF). Partially stabilized zirconia (ZrO2) is currently attractive as an alternative to titanium (Ti) implants; however, no ...
Eiji Yoshida, Tohru Hayakawa
doaj   +1 more source

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