Results 1 to 10 of about 1,954 (252)

Morphology-Dependent Transformation of Dicalcium Phosphate Dihydrate (DCPD) to Octacalcium Phosphate (OCP) and Its Stability in Simulated Physiological Fluids [PDF]

open access: yesMolecules
Calcium phosphate (CaP) materials are biocompatible and non-toxic to the body. However, they lack biointegration, exhibit a low resorption rate and can cause fibrous encapsulation throughout the implant material.
Daniela Chávez-Herrera   +7 more
doaj   +2 more sources

Measurements of Energetic States Resulting from Ion Exchanges in the Isomorphic Crystals of Apatites and Bioapatites [PDF]

open access: yesMolecules, 2022
Developments in the field of nanostructures open new ways for designing and manufacturing innovative materials. Here, we focused on new original ways of calculating energy changes during the substitution of foreign ions into the structure of apatites and
Andrzej Kuczumow   +8 more
doaj   +2 more sources

Apatite textural and geochemical insights into the petrogenesis of intrusive rocks [PDF]

open access: yesScientific Reports
Apatite is widely used as an indicator mineral to reflect the characteristics and petrogenesis of host magma. In this study, we present apatite geochemical and in-situ Sr–Nd isotopic data of monzogranite, granodiorite and dioritic enclave in the eastern ...
Haina Li   +8 more
doaj   +2 more sources

The location of cationic substitutions in carbonated biomimetic apatites significantly affects crystal nanomechanics [PDF]

open access: yesScientific Reports
Bone and teeth are comprised of carbonate-substituted apatites with cationic substitutions, like sodium and potassium. Cations substitute for calcium in the apatite lattice but it is unclear whether they substitute for Ca(1) or Ca(2).
Stephanie Wong   +4 more
doaj   +2 more sources

Steering of Crystal Cell Volumes in Apatites and Bioapatites [PDF]

open access: yesMolecules
The biological variability of apatites in different hard tissues of organisms was the starting point for this investigation. Materials such as whale rostrums, ganoine, and some fish bones were analyzed.
Andrzej Kuczumow   +11 more
doaj   +2 more sources

Light δD apatites reveal deep origin water in North China Craton intracontinental granites and basalts [PDF]

open access: yesNature Communications
Water is essential to the formation of intracontinental granites, but its origin remains elusive. Here we address this scientific problem by analyzing D/H isotopes of apatites, hydrous minerals in Jurassic and Early Cretaceous granites and basalts from ...
Chuan-Mao Yang   +7 more
doaj   +2 more sources

Evaluation of potential biomaterials for application in guide bone regeneration from Bacterial Nanocellulose/Hydroxyapatite [PDF]

open access: yesPolímeros, 2023
Bacterial nanocellulose (BNC) membranes have interconnected porous nanostructures and excellent biocompatibility. Functionalizing these with calcium phosphate sources and metal ions confers optimized properties to the biomaterial.
Elouise Gaulke   +7 more
doaj   +1 more source

Estimated equivalent radiation dose at different altitudes in Earth’s atmosphere

open access: yesSolar-Terrestrial Physics, 2022
The paper reports the results of simulation of cosmic ray proton transport through Earth’s atmosphere. The main objective of this work is to obtain characteristics of secondary particle fluxes at different altitudes and to convert them to equivalent dose
Maurchev E. A.   +4 more
doaj   +1 more source

Studies of Peculiar Mg-Containing and Oscillating Bioapatites in Sheep and Horse Teeth

open access: yesBiomolecules, 2021
New types of biological apatites have been discovered in molar sheep and horse teeth and are divided in two types. In the first and more general type, the release of Mg ions is parallel to the changes in composition of apatite leading to a final ...
Andrzej Kuczumow   +5 more
doaj   +1 more source

Biomorphic Transformations: A Leap Forward in Getting Nanostructured 3-D Bioceramics

open access: yesFrontiers in Chemistry, 2021
Obtaining 3-D inorganic devices with designed chemical composition, complex geometry, hierarchic structure and effective mechanical performance is a major scientific goal, still prevented by insurmountable technological limitations.
Simone Sprio   +2 more
doaj   +1 more source

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