Formation of Strontium Hydroxyapatite by Homogeneous Precipitation Method.

Hydrothermal Preparation and Characterization of Ultralong Strontium-Substituted Hydroxyapatite Whiskers Using Acetamide as Homogeneous Precipitation Reagent

The ultralong strontium- (Sr-) substituted hydroxyapatite (SrHAp) whiskers were successfully prepared using acetamide as homogeneous precipitation reagent. The effect of the Sr substitution amount on the lattice constants and proliferation of human osteoblast cells (MG-63) was further investigated. The results showed that the SrHAp whiskers with diameter of 0.2-12 μm and ultralong length up to ...

Strontium-doped hydroxyapatite polysaccharide materials effect on ectopic bone formation

Previous studies performed using polysaccharide-based matrices supplemented with hydroxyapatite (HA) particles showed their ability to form in subcutaneous and intramuscular sites a mineralized and osteoid tissue. Our objectives are to optimize the HA content in the matrix and to test the combination of HA with strontium (Sr-HA) to increase the matrix bioactivity. First, non-doped Sr-HA powders...

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Strontium Hydroxyapatite and Strontium Carbonate as Templates for the Precipitation of Calcium-Phosphates in the Absence and Presence of Fluoride

Comparative fixation of calcium and strontium by synthetic hydroxyapatite.

Strontium can be deposited in bone apatite either by the replacement of surface adsorbed calcium, or by substitution for intracrystalline calcium (1-3). It has also been reported that both of these processes favor the deposition of calcium to that of strontium (3). This report is concerned with the comparative incorporation of calcium and strontium in synthetic apatites. We shall present eviden...