bone like hydroxyapatite (nhap) was synthesized via an in situ biomimetic process in presence of wheat starch. the effect of polymer concentration alteration on the final structure of nhap was investigated. formation of the nhap at room temperature was confirmed by x-ray diffraction (xrd) and fourier transform infrared spectroscopy (ft-ir). size and morphology of the nhap samples were character...

The objective of this study was to determine the density anaerobic granules on different heights a full-scale Upflow Anaerobic Sludge Bed reactor. defined through settling velocities granules, measured in In study, granular calculated with and developed mathematical model. model is based Stokes experiment, were taken from an reactor, 0.6 7.6 m. granules’ diameters varied between 1 5 mm. six vel...

Introduction: Hydroxyapatite nanoparticles inhibit the growth of various cancer cells. The inhibitory effect of these nanoparticles on breast cancer cells of mcf7 has also been reported. However, no studies have been done on the effect of the hydroxyapatite nanoparticles on the radiation sensitivities of the MCF7 cell Line. Our goal in this study is to investigate the effect of...

Hydroxyapatite orbital implants are widely used in the treatment of post-nucleation socket syndrome. The porous hydroxyapatite serves as a matrix for vascular tissue ingrowth. We investigate the degree of fibro-vascular tissue integration and the presence of osteogenesis within the porous hydroxyapatite part of the orbital implants. For comprehensive imaging, all implants were prepared using a ...

INTRODUCTION This study compares the outcome and complications of integrated hydroxyapatite implant and non-integrated orbital implants following enucleation in Asian patients. MATERIALS AND METHODS This is a retrospective study of enucleated patients with coralline hydroxyapatite implants versus non-integrated implants (acrylic, glass and silicone) at the Singapore National Eye Centre from J...

This study conducted plant growth tests using a rhizobox system to quantitatively determine the distance of immobilization lead migrating from contaminated soil into uncontaminated rhizosphere soil, and to assess the lead phases accumulated in rhizosphere soil by sequential extraction. Without the hydroxyapatite, exchangeable lead fractions increased as the rhizosphere soil got closer to the co...

The amount of fluoride adsorbed onto hydroxyapatite increased as the aqueous fluoride concentration increased. When the aqueous fluoride concentration exceeded 100 ppm, the total amount of fluoride adsorbed onto hydroxyapatite decreased after being washed off with water three times. It is postulated that when the aqueous fluoride concentration exceeds 100 ppm, a multilayer structure of calcium ...

This study introduces the application of calcium-derivatized hydroxyapatite for purification of Fab. Fab binds to native hydroxyapatite but fails to bind to the calcium derivatized form. IgG, Fc, and most other protein contaminants bind to the calcium form. This supports Fab purification by a simple flow-through method that achieves greater than 95% purity from papain digests and mammalian cell...