نتایج جستجو برای: hydroxy apatite

تعداد نتایج: 34746  

Journal: :international journal of marine science and engineering 2013
n. moayyeri k. saeb e. biazar

heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures which have high investment and exploitation costs. hence, it is significantly necessary ...

2016

Liu et al. [1] explained the possible cariostatic mechanisms of the combined fluoride-laser treatment. They suggested that a laser-induced purification of the human enamel hydroxy apatite structure takes place and plays the major role in this cariostatic process. They also mentioned that the low-energy laser treatment has a photo thermal effect that may cause a reduction in enamel permeability....

Journal: :Journal of materials science. Materials in medicine 2008
D Mkhonto Nora H de Leeuw

Computer modelling techniques were employed to investigate the effect of surface silanol groups on the strength of adhesion of apatite thin films to silica surfaces. To this end, we have studied a series of silica surfaces with different silanol densities and calculated their interaction with apatite thin films. Our findings indicate that apatite does not attach strongly to surface hydroxy grou...

Journal: :Bulletin of Materials Science 1996

Journal: :Journal of Medical Case Reports 2007
Theodoros B Grivas Olga D Savvidou Spyridon A Psarakis Pierre-Francois Bernard George Triantafyllopoulos Ioannis Kovanis Panagiotis Alexandropoulos

INTRODUCTION Fractures of the neck of the femoral component have been reported in uncemented total hip replacements, however, to our knowledge, no fractures of the neck of a cementless forged titanium alloy femoral stem coated in the proximal third with hydroxy-apatite have been reported in the medical literature. CASE PRESENTATION This case report describes a fracture of the neck of a cement...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this work needle like hydroxy apatite were synthesized in a reverse microemulsion droplets of water in cyclohexane, separated by a cationic surfactant and co-surfactant, in the presence of na-polyacrylate (paa) as an anionic polyelectrolyte. characterization of the as formed hap nanoparticles at the room temperature were carried out by x-ray diffraction (xrd) and fourier transform infrared s...

Journal: :Journal of Materials Science 1989

2017
Moustafa N. Aboushelib Rehab Shawky

BACKGROUND The aim of this study was to evaluate osteogenesis ability of CAD/CAM porous zirconia scaffolds enriched with hydroxy apatite used to augment large boney defects in a dog model. METHODS Surgical defects were made bilaterally on the lower jaw of 12 Beagle dogs. Cone beam CT images were used to create three dimensional images of the healed defects. Porous zirconia scaffolds were fabr...

E. Biazar K. Saeb N. Moayyeri,

Heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. Current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures which have high investment and exploitation costs. Hence, it is significantly necessary ...

Journal: :Journal of Advanced Science 2000

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