apatite phosphate de calcium
Apatitic calcium phosphates: Synthesis ... - ScienceDirect
2012年8月1日 Thus, a significant dissolution of calcium carbonate occurred in the first hour of reaction, about 72% in both syntheses. Then the reaction slowed down considerably and despite a long reaction time of 72 h, the conversion of calcium carbonate into calcium
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Calcium Phosphate Apatites: Wet Formation, Thermal
2022年3月4日 Abstract. Apatite calcium phosphates have been synthesized at pH 9–11, Ca/P = 1.50–1.67 under variable isolation conditions. A complex procedure for
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Calcium phosphate apatites with variable Ca/P atomic ratio I.
2002年2月15日 1. Introduction Calcium phosphate based ceramics have proved to be attractive materials for biological applications [1]. Among these bioceramics, particular
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Physico-chemical characterization of calcium-apatite
2023年8月7日 Calcium phosphate materials synthesized from apatite with atomic Ca/P ratios ranging from 1.50 to 1.67 (Ca10-x(HPO4)x(PO4)6-x(OH)2-x (0 ≤ x ≤ 1)) have very
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Transformation of amorphous calcium phosphate to bone-like apatite ...
2018年10月9日 Herein, we demonstrate a detailed transformation mechanism of amorphous calcium phosphate spherical particles to apatite platelet-like crystals, within
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Pure hydroxyapatite synthesis originating from amorphous calcium ...
2021年6月2日 ACP is transformed to crystalline calcium phosphate compounds, where the main phase of calcium phosphate depends on the Ca/P ratio.
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Physico-chemical characterization of calcium-apatite
2023年8月10日 Calcium phosphate materials synthesized from apatite with atomic Ca/P ratios ranging from 1.50 to 1.67 (Ca 10-x (HPO 4) x (PO4) 6-x (OH) 2-x (0 ≤ x ≤ 1)) have
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Osteopontin regulates biomimetic calcium phosphate crystallization
2020年9月24日 Scientific Reports - Osteopontin regulates biomimetic calcium phosphate crystallization from disordered mineral layers covering apatite crystallites
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Minerals Free Full-Text Apatite Biominerals - MDPI
2016年4月5日 Calcium phosphate apatites offer outstanding biological adaptability that can be attributed to their specific physico-chemical and structural properties. The aim of this review is to summarize and discuss
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Apatite Formation from Amorphous Calcium Phosphate and
2016年7月27日 We investigate the transformation of mixed amorphous calcium phosphate/amorphous calcium carbonate phases into bone-like nanocrystalline apatite
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Calcium phosphates for biomedical applications
2017年5月1日 La historia de los fosfatos de calcio en el campo de la medicina comienza en 1769, cuando se descubre la primera evidencia de su existencia en el tejido óseo. ... Apatite was the first calcium phosphate recognized as mineral specie. It was in 1786 when Abraham Gottlob, well-known as the father of German geology, discovered this mineral.
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SYNTHESE DE L'HYDROXYAPATITE PURE A PARTIR DE
The synthesis of apatite silicated Ca10(PO4)6-x(SiO4)x(OH)2-x (SiHA) with 0≤x≤2 was investigated using a wet precipitation method followed by heat treatment using calcium carbonate CaCO3 and ...
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Biological apatite is an inorganic calcium phosphate and is considered as a main constituent of bone and tooth structure. The nanosized biological apatite has wide biomedical and dental applications. Over the period, researchers have been trying to develop synthetic apatites, which simulate to biological apatites. ...
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Minerals Free Full-Text Apatite Biominerals - MDPI
2016年4月5日 Calcium phosphate apatites offer outstanding biological adaptability that can be attributed to their specific physico-chemical and structural properties. The aim of this review is to summarize and discuss the specific characteristics of calcium phosphate apatite biominerals in vertebrate hard tissues (bone, dentine and enamel). Firstly, the structural,
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A Review of Phosphate Mineral Nucleation in Biology and
2013年9月28日 On the basis of high-resolution X-ray spectroscopic characterization, about half of the 147 phosphorus-rich regions examined in our samples were found to be polyphosphate, whereas the other half were classified as apatite, a common calcium phosphate mineral. From Diaz et al. . Reprinted with permission from American
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Apatite : Le Guide des Vertus et Propriétés Chakras Shop
2023年12月8日 Les caractéristiques de l’apatite. Étant un minéral phosphaté, l’apatite comprend essentiellement du phosphate de calcium fluoré. Elle se dote d’un système cristallin hexagonal. Notons que l’IMA (International Mineralogical Association) a découvert 3 variétés de la pierre, dont la Fluorapatite, le Chlorapatite et l ...
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History of Calcium Phosphates in Regenerative Medicine
2014年1月1日 Apatite; Calcium orthophosphate; Lime phosphate; Calcium phosphate; ... Gaubert P (1922) Sur les cristaux liquides de phosphate de calcium. Cr Hebd Acad Sci 174:1115–1117. Google Scholar Shipley PG, Kramer B, Howland J (1926) Studies upon calcification in vitro. Biochem J 20:379–387
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Calcium Phosphate - an overview ScienceDirect Topics
Apatite ( Fig. 1.12) is a group of natural calcium mineral±fluorine and chlorine (Ca 5 (PO 4) 3 (F, Cl, OH)). The mineral primarily occurs as phosphate rock. The large apatite deposits are located in China, Canada, the United States, Europe, Russia, and India. Apatite is used as a source of phosphorus, phosphoric acid, and fertilizers.
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Phosphate Mineral - an overview ScienceDirect Topics
Natural phosphate minerals are mostly found as apatites, mainly as apatites of calcium. Because apatites are also found in bones, they have been studied extensively [16]. A whole series of apatite structures can be derived from the formula M 5 (PO 4) 3 Z, where, M is a divalent metal and Z is an anion (OH −, Cl −, F −, and even CO 3 2 − ...
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Inorganic phosphate in growing calcium carbonate abalone
2022年3月21日 Phosphate involvement in calcium carbonate biominerals raises questions on biomineralisation pathways. Here, the authors explore the presence of phosphate in the growing shell of the European ...
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5 minéraux qui contiennent du phosphate
2019年2月13日 Réimphoto / Getty Images L'apatite (Ca 5 (PO 4) 3 F) est un élément clé du cycle du phosphore. Il est répandu mais peu commun dans les roches ignées et métamorphiques. L'apatite est une famille de
learn moreCalcium orthophosphates and human beings - PMC
2012年4月1日 As written above, apatite was recognized as a calcium phosphate by 1789. 15, 16 As early as 1794, ... de Wesselow OLV. The calcium and inorganic phosphorus content of the maternal blood during pregnancy and lactation. Lancet. 1922; 200:227–8. doi: 10.1016/S0140-6736(01)15147-0.
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Échographie des calcifications périarticulaires - ScienceDirect
2015年9月1日 1. Introduction1.1. Généralités. Les calcifications périarticulaires sont la conséquence de la précipitation dans les tissus mous de cristaux de phosphate de calcium basiques (PCB), principalement d’apatite carbonatée [1].. Dans la forme primitive, les dépôts périarticulaires de PCB intéressent surtout les tendons, mais aussi les bourses, les
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Apatite - an overview ScienceDirect Topics
Calcium Apatite Crystal Deposition Disease. Calcium apatite crystal deposition disease is a heterogeneous group of disorders in which calcium phosphate (Ca 10 (PO 4) 5.OH) crystals form in articular or peri-articular tissues (Schumacher et al., 1977; Fam et al., 1981; McCarty et al., 1981; Schumacher et al., 1981; Kandel et al., 1986.;
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Hydroxyapatite for Biomedical Applications: A Short Overview
2021年9月28日 Calcium phosphates (CaPs) are biocompatible and biodegradable materials showing a great promise in bone regeneration as good alternative to the use of auto- and allografts to guide and support tissue regeneration in critically-sized bone defects. This can be certainly attributed to their similarity to the mineral phase of natural bone.
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Hydroxyapatite (HAP) / Phosphate tricalcique (TCP) SICT
2023年12月9日 Les phosphates de calcium composent la partie minérale du tissu osseux chez les mammifères. Il existe différents types de phosphate de calcium : Apatite : Hydroxyapatite Chloroapatite Fluoroapatite Phosphate tricalcique (a et b) Les propriétés chimiques des phosphates de calcium, donc leur comportement en solution, sont
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Fréquence médicale
Les niveaux sériques de calcium, de phosphate et de vitamine D peuvent être mesurés. L'imagerie joue un rôle crucial dans le diagnostic et la prise en charge du rhumatisme à hydroxyapatite (RA). Différentes modalités d'imagerie sont utilisées pour détecter les dépôts d'hydroxyapatite (AP) et évaluer l'étendue des lésions ...
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Osteopontin regulates biomimetic calcium phosphate crystallization
2020年9月24日 Calcium phosphate mineralization processes are key to constructing well-organized mechanically viable structures in tissues like bone 1,2, tooth enamel, dentin and cementum.One of the more complex ...
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Introduction to Apatites IntechOpen
2014年11月11日 Apatite is the generic name, which was first introduced by German geologist A.G. Werner. These minerals and their synthetic analogs represent a major class of ionic compounds and the most common crystalline form of calcium phosphates, which are of interest of many industrial branches and scientific disciplines. Since, apatite
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