Results 11 to 20 of about 64,811 (353)

How to build a bone? - Hydroxyapatite or Posner’s clusters as bone minerals

open access: yesOpen Ceramics, 2021
For decades, hydroxyapatite has been considered the main mineral phase of mammalian tooth enamel and bone that crystallizes from a precursor phase, amorphous calcium phosphate.
Iman Roohani, Soshan Cheong, Anna Wang
doaj   +1 more source

Pure hydroxyapatite synthesis originating from amorphous calcium carbonate

open access: yesScientific Reports, 2021
We report a synthesis strategy for pure hydroxyapatite (HAp) using an amorphous calcium carbonate (ACC) colloid as the starting source. Room-temperature phosphorylation and subsequent calcination produce pure HAp via intermediate amorphous calcium ...
Michika Sawada   +3 more
doaj   +1 more source

Variable neuroprotective role of Filipendula ulmaria extract in rat hippocampus

open access: yesJournal of Integrative Neuroscience, 2021
We evaluated the influence of an antioxidant-rich extract of Filipendula ulmaria L. on anxiety levels induced by nano-sized particles of different calcium phosphates.
Natalija Arsenijevic   +14 more
doaj   +1 more source

Triggered metabolism of adenosine triphosphate as an explanation for the chemical heterogeneity of heterotopic ossification

open access: yesCommunications Chemistry, 2023
Heterotopic ossification (HO), the pathological formation of bone in soft tissues, is a debilitating condition, as well as one of the few instances of de novo bone formation in adults.
Cong Sui   +4 more
doaj   +1 more source

Transient amorphous calcium phosphate in forming enamel [PDF]

open access: yesJournal of Structural Biology, 2009
Enamel, the hardest tissue in the body, begins as a three-dimensional network of nanometer size mineral particles, suspended in a protein gel. This mineral network serves as a template for mature enamel formation. To further understand the mechanisms of enamel formation we characterized the forming enamel mineral at an early secretory stage using X-ray
Elia, Beniash   +3 more
openaire   +2 more sources

Formation of Hydroxyapatite-Based Hybrid Materials in the Presence of Platelet-Poor Plasma Additive

open access: yesBiomimetics, 2023
Biomaterials based on hydroxyapatite with controllable composition and properties are promising in the field of regenerative bone replacement. One approach to regulate the phase composition of the materials is the introduction of biopolymer-based ...
Ilya E. Glazov   +7 more
doaj   +1 more source

Parameters influencing calcium phosphate precipitation in granular sludge sequencing batch reactor [PDF]

open access: yes, 2012
Parameters influencing calcium phosphate precipitation in Calcium phosphate precipitation inside microbial granules cultivated in a granular sequenced batch reactor (GSBR) has been demonstrated to contribute to phosphorus removal during wastewater ...
Biscans, Béatrice   +3 more
core   +4 more sources

A thermochemical approach for calcium phosphate precipitation modeling in a pellet reactor [PDF]

open access: yes, 2003
A common pathway for P-recovery from wastewater is phosphate precipitation as calcium phosphates. In this paper, a thermodynamic model for phosphate precipitation is proposed based on various models of activity coefficients taking into account various ...
Azzaro-Pantel, Catherine   +4 more
core   +2 more sources

Characterization of the adsorption of conjugated and unconjugated bile acids to insoluble, amorphous calcium phosphate.

open access: yesJournal of Lipid Research, 1994
Recently we showed that supplemental dietary calcium stimulates the intestinal formation of insoluble calcium phosphate and decreases the ratio of dihydroxy to trihydroxy bile acids in human duodenal bile. Because previous in vitro studies indicated that
M J Govers   +3 more
doaj   +1 more source

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