نتایج جستجو برای: apatite

تعداد نتایج: 3601  

2012
Makoto Otsuka Hidenori Nakagawa Kuniko Otsuka Atsuo Ito William I. Higuchi

Artificial bone (PC, containing 3% indomethacin) with biocompatibility, inter-connective pore structure, and drug delivery ability was obtained from self-setting apatite/collagen composite cement. X-ray powder diffraction and FT-IR spectroscopy suggested that PC consisted of carbonated apatite and had a structure similar to that of natural rat bone. The IMC release rates from a PC block contain...

2012
Carmen Llena Ana María Leyda Leopoldo Forner

Dental caries is a highly prevalent disease, although, in most developed countries, its prevalence has declined, but the disease remains a major public health problem (Selwitz et al., 2007). Signs of the caries process cover a continuum from the first molecular changes in the apatite crystals of the tooth to a visible white-spot lesion, continuing with dentin involvement and eventual cavitation...

Journal: :Crystals 2021

The preparation of graphene/apatite and graphene oxide/apatite hybrid nanocomposites has recently attracted great attention in the biomaterial community. sitting drop vapor diffusion technique been assessed as a preparative method for such this work. employed to induce heterogeneous nucleation growth calcium phosphate presence exfoliated commercial oxide flakes, both labeled with L-Alanine. Exf...

Journal: :American Mineralogist 2016

Journal: :iranian journal of earth science 0
w. mammo ghebre geological survey of ethiopia, p.o.box 2302, addis ababa, ethiopia,

the bikilal layered gabbro-complex is composed of zones/layers of olivine/ pyroxene gabbro and hornblende gabbro. within the hornblende gabbro, repeated lens-like thin and elongated bodies of hornblendite are found intimately associated with massive and disseminated ilmenite-magnetite bodies, in places with apatite. petrological examination of the hornblende gabbro shows 50-55% hornblende, 40-4...

2012
M. Anand

Lunar meteorites provide a wider sampling of the lunar surface compared to the samples collected during the Apollo and Luna Missions. Apatite is the main hydroxyl-bearing (proxy for water) mineral in lunar samples, especially in basaltic rocks. Apatite is also amenable to in-situ U-Pb age dating studies. The ages of lunar basaltic meteorites also span over a larger range compared to basaltic sa...

کوهساری, امیرحسین, دهقانزاده بافقی, علی اکبر , محمد تراب, فرهاد ,

Gazestan deposit is located about 185 km of Yazd, in the Bafgh – Posht e Badam Metallogenic belt, consists of Infracambrian carbonate, shale, tuff, sandstone and volcanic rocks. Acid to basic green rocks (rhyolite, dacite and basalt) are host for iron and phosphate mineralization. The alteration process is more intence in the volcanic rocks including, actinolite, chloritization, silicification ...

Journal: :RESOURCES PROCESSING 1990

A. Eslamizadeh

Early Cambrian volcanic rocks of the Posht-e Badam tectonic block in Central Iran which is hydrothermally altered to green color rocks, hosts the Kiruna-type Iron Oxide-Apatite (IOA) mineralization in Anomaly 10 of Sechahun deposit. Geochemically, these volcanic rocks are classified as high-potassium calc-alkaline and mainly consist of rhyolite and trachyandesite. These rocks are important for ...

2014
N. J. Potts R. Tartèse M. Anand I. A. Franchi W. van Westrenen J. J. Barnes A. A. Griffiths

COMPOSITIONS FROM WHICH APATITE CRYSTALLIZES. N. J. Potts 1,2* , R. Tartèse 1 , M. Anand 1,3 , I. A. Franchi 1 , W. van Westrenen 2 , J. J. Barnes 1,3 , A. A. Griffiths 1,4 1 Department of Physical Sciences, The Open University, Milton Keynes, UK, (*[email protected]) 2 Faculty of Earth and Life Sciences, VU University Amsterdam, NL 3 Department of Earth Sciences, The Natural History Muse...

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