Relevant bibliographies by topics / Magnesium phosphates

Academic literature on the topic 'Magnesium phosphates'

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Published: 10 March 2023

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Journal articles on the topic "Magnesium phosphates"

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Gu, Xiang, Yan Li, Chao Qi, and Kaiyong Cai. "Biodegradable magnesium phosphates in biomedical applications." Journal of Materials Chemistry B 10, no. 13 (2022): 2097–112. http://dx.doi.org/10.1039/d1tb02836g.

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This review comprehensively summarizes the state-of-the-art progress made in magnesium phosphate-based biomaterials, including nanostructured magnesium phosphates and magnesium phosphate-based cements, ceramics, scaffolds, coatings and so on, as well as their biomedical applications in nanomedicine and tissue engineering.
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Kazakova, Gilyana, Tatiana Safronova, Daniil Golubchikov, Olga Shevtsova, and Julietta V. Rau. "Resorbable Mg2+-Containing Phosphates for Bone Tissue Repair." Materials 14, no. 17 (August 26, 2021): 4857. http://dx.doi.org/10.3390/ma14174857.

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Materials based on Mg2+-containing phosphates are gaining great relevance in the field of bone tissue repair via regenerative medicine methods. Magnesium ions, together with condensed phosphate ions, play substantial roles in the process of bone remodeling, affecting the early stage of bone regeneration through active participation in the process of osteosynthesis. In this paper we provide a comprehensive overview of the usage of biomaterials based on magnesium phosphate and magnesium calcium phosphate in bone reconstruction. We consider the role of magnesium ions in angiogenesis, which is an important process associated with osteogenesis. Finally, we summarize the biological properties of calcium magnesium phosphates for regeneration of bone.
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Possenti, Elena, Claudia Conti, G. Diego Gatta, Marco Realini, and Chiara Colombo. "Diammonium Hydrogenphosphate Treatment on Dolostone: the Role of Mg in the Crystallization Process." Coatings 9, no. 3 (March 4, 2019): 169. http://dx.doi.org/10.3390/coatings9030169.

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The diammonium hydrogenphosphate (DAP, (NH4)2HPO4) reaction with calcite has been extensively investigated. The availability of free calcium ions in the reaction environment has been acknowledged as a crucial factor in the crystallization of calcium phosphates with a high (hydroxyapatite, Ca/P 1.67) or low Ca/P molar ratio (dicalcium phosphate dihydrate, Ca/P 1.00; octacalcium phosphate, Ca/P 1.33). On the contrary, no data are available on the DAP interaction at room temperature with dolomite in terms of reaction mechanism and composition of the reaction products. Here, a multi-analytical approach based on scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectrometry (EDS) and X-ray powder diffraction before and after heating treatments is proposed to explore how the formation of calcium phosphates occur on Mg-enriched substrates and if the presence of magnesium ions during the reaction influences the crystallization process of calcium phosphates. The DAP reaction with polycrystalline dolomite gives rise to the formation of struvite and of poorly crystalline hydroxyapatite. Calcium and magnesium ions mutually interfered in the crystallization of magnesium and calcium phosphates, respectively, whose effects influenced the properties (size, micro-morphology, composition and crystallinity) of the newly-formed phases.
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Isaicheva, Lyudmila Anatol'evna, Natal'ya Mikhailovna Trepak, Arlen Leonidovich L'vov, and Ivan Alekseevich Kazarinov. "Corrosion and Еlectrochemical Behaviour of Magnesium and Magnesium-Lithium Alloys in Phosphoric Acid Media." Electrochemical Energetics 12, no. 3 (2012): 124–28. http://dx.doi.org/10.18500/1608-4039-2012-12-3-124-128.

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The corrosion and electrochemical behavior of magnesium and the MA 21 magnesium-lithium alloys in solutions of moderately acidic phosphates with various additives was studied. The inhibiting effect of nitrate and fluoride ions on the anode dissolution of these objects was revealed. Features of the electrochemical dissolution of magnesium and the magnesium-lithium alloys in nitrate phosphate solutions with fluoride ions caused by their activation-passivation competition have been noted. Distinctive features of the electrochemical behavior of the magnesium-lithium alloys in comparison with pure magnesium in nitrate phosphate fluoride solutions due to their structural and phase specifics have been established.
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Yoshida, Katsumi, Hideki Hyuga, Naoki Kondo, and Hideki Kita. "Improvement of Oxidation Resistance of Graphite Powder Treated with Phosphate." Key Engineering Materials 352 (August 2007): 133–36. http://dx.doi.org/10.4028/www.scientific.net/kem.352.133.

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Graphite powder was treated with lanthanum, aluminum and magnesium phosphate solution, and oxidation resistance of the obtained graphite powder was evaluated. Oxidation starting temperature and oxidation completion temperature of graphite powder treated with various phosphates were 50-100oC higher than those of as-received graphite powder. Graphite powder treated with small amount of lanthanum phosphate exhibited the higher oxidation starting temperature than graphite powder treated with aluminum and magnesium phosphates. LaP5O14 would partially exited on graphite powder, and protect the edge carbon atoms of graphite and reduce the reactivity of carbon atoms toward oxygen, resulting in improving the oxidation resistance.
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Kazakova, G. K., T. V. Safronova, and T. B. Shatalova. "Ceramics based on powders synthesized from ammonium hydrophosphate and acetates of calcium and magnesium." Materials Science, no. 4 (April 20, 2021): 33–40. http://dx.doi.org/10.31044/1684-579x-2021-0-04-33-40.

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Ceramics the phase composition of which included tricalcium phosphate, calcium magnesium ortophosphate and magnesium pyrophosphate has been produced from nanosized powders synthesized by chemical deposition from 1M aqueous solutions of ammonium hydrogen phosphate and calcium and / or magnesium acetates. According to XRD analysis the phase composition of the powder synthesized from calcium acetate included calcium hydroxyapatite Ca5(PO4)3(OH), octacalcium phosphate Ca8H2(PO4)6·5H2O and brushite CaHPO4·2H2O. The phase composition of the powder synthesized from magnesium acetate included struvite MgNH4PO4·6H2O. And the phase composition of the powder synthesized from solution containing calcium and magnesium acetates at the cation ratio Са: Mg = 9: 1 included hydroxyapatite Ca5(PO4)3(OH), whitlockite Ca18Mg2H2(PO4)14, and struvite MgNH4PO4·6H2O. Ceramic materials containing the bioresorbable and biocompatible phases of calcium and / or magnesium phosphates can be used to make bone implants for treatment of bone tissue defects. Keywords: tricalcium phosphate, calcium magnesium orthophosphate, magnesium pyrophosphate, whitlockite, octacalcium phosphate, hydroxyapatite, brushite, struvite, ceramics.
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Ding, Zhu, Ming Zhang, Bi Qin Dong, Wei Liu, and Han Lu. "Phosphate Bonding: A New Method for Using Large Volume of Fly Ash." Key Engineering Materials 539 (January 2013): 225–29. http://dx.doi.org/10.4028/www.scientific.net/kem.539.225.

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Magnesium phosphate cements (MPC) with larger volume of fly ash were studied in the present work. Dead burned magnesia, phosphates and fly ash were the components of MPC. The volume of fly ash in MPC was 70%, 75% and 80%, respectively. Three phosphates, monosodium phosphate (MSP), monopotassium phosphate (MPP) and monoammonium phosphate (MAP) were used. Compressive strength of the three MPC mortars with different fly ash content was determined. Results show that the compressive strength reduced with the proportion increase of fly ash, increased with the curing time. After cured 28 days in the lab air, the compressive strength of cement mortar can reach 14MPa, when the fly ash dosage was 80% by weight of cement. The reaction product is struvite of potassium (KMgPO4•6H2O) in potassium phosphate based MPC, and hydrated sodium phosphate (Na2HPO4•17H2O) in sodium phosphate based MPC. The results indicate that MPC has capacity to bond large volume of fly ash. A new way to utilize fly ash in a large scale can be realized by phosphate bonding.
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Driessens, F. C. M., M. G. Boltong, R. Wenz, and J. Meyer. "Calcium Phosphates as Fillers in Struvite Cements." Key Engineering Materials 284-286 (April 2005): 161–64. http://dx.doi.org/10.4028/www.scientific.net/kem.284-286.161.

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Struvite or magnesium ammonium phosphate MgNH4PO4 has been proposed as active component in setting surgical cements. The usual formulation is one in which the magnesium component in the powder is either magnesium hydrogen phosphate trihydrate or trimagnesium phosphate or a mixture of these two compounds. As the cement liquid a concentrated solution of diammonium phosphate is taken. To make the cement attractive as a bone substitute material a calcium phosphate filler is generally incorporated. Thus such materials are a type of pseudo calcium phosphate cements. This study was intended to find out which calcium phosphate and which magnesium compound are the most suitable. In the first series of experiments a mixture of 12 g Mg3(PO4)2 and 4 g MgHPO4.3H2O was used as the magnesium component in the powder. To that powder 30 g of either precipitated hydroxyapatite PHA or CaHPO4 or CaHPO4.H2O or b-TCP or a-TCP was added. The cement liquid was a 3.5 M solution of (NH4)2HPO4. At specific liquid/powder ratios L/P suitable setting times were obtained for the different formulations. However, the compressive strengths after immersion of the cements in 0.9% saline solution at 37°C varied over a large range. The best formulation was that with a-TCP which reached a compressive strength of 57 MPa after 18 h of immersion. In the second series of experiments 20 g of Mg3(PO4)2 was used as the magnesium component in the powder. Again 30 g of either of the above mentioned calcium phosphates was used as filler and again a 3.5 M solution of (NH4)2HPO4 was used as the cement liquid. At the appropriate L/P ratios the respective setting times were longer than in the first series of experiments but all five formulations appeared to result in good compressive strengths varying from 41 MPa for the formulation with b-TCP to 67 MPa for the formulation with PHA. In the third series of experiments 30 g a-TCP was taken as the calcium phosphate in the powder. As magnesium components mixtures of Mg3(PO4)2.8H2O and MgHPO4.3H2O and Mg3(PO4)2 were used. Again the cement liquid consisted of a 3.5 M solution of (NH4)2HPO4. The formulations with Mg3(PO4)2.8H2O had the shortest setting times and the lowest compressive strengths, whereas those with Mg3(PO4)2 had the longest setting times and the highest compressive strengths. Therefore, it is advantageous to use Mg3(PO4)2 as the magnesium component.
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Nabiyouni, Maryam, Yufu Ren, and Sarit B. Bhaduri. "Magnesium substitution in the structure of orthopedic nanoparticles: A comparison between amorphous magnesium phosphates, calcium magnesium phosphates, and hydroxyapatites." Materials Science and Engineering: C 52 (July 2015): 11–17. http://dx.doi.org/10.1016/j.msec.2015.03.032.

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Seel, F., K. P. Klos, D. Recktenwald, and J. Schuh. "Zur Frage der nicht-enzymatischen Bildung von kondensierten Phosphaten unter präbiotischen Bedingungen/ Non-Enzymatic Formation of Condensed Phosphates under Prebiotic Conditions." Zeitschrift für Naturforschung B 41, no. 7 (July 1, 1986): 815–24. http://dx.doi.org/10.1515/znb-1986-0704.

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AbstractOne of the problems of chemical evolution on the primitive Earth is the question of the possibility of a non-enzymatic spontaneous condensation o f phosphoric acid and hydrogen phosphates to yield polyphosphoric acids and polyphosphates in aqueous system s, by means of which phosphorus might have entered into early metabolisms. The extra- or intra-cellular formation of magnesium diphosphate under geologically plausible hydrothermal conditions from either magnesium hydrogen phosphates or calcium phosphates in media has been demonstrated.
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Dissertations / Theses on the topic "Magnesium phosphates"

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Sun, Zehra Pinar. "Structural And Mechanical Investigations Of Magnesium And Fluoride Doped Nano Calcium Phosphates." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610764/index.pdf.

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The aim of this study was to investigate the microstructure and mechanical properties of pure and Mg2+ and F- doped nano-calcium phosphate (CaP) powders, which were synthesized by precipitation method. After the drying and calcination processes, the samples were sintered at 1100º
C for 1 hour. High densities were achieved except for the 7.5 % mole Mg doped samples. Microstructure of the CaPs were investigated by X- ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Due to the Mg substitution, &
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-TCP phase was detected besides HAp, resulting in the formation of HAp/ &
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-TCP biphasic composites with different compositions. The substitutions of the ions have been verified by the decrease in the hexagonal unit cell volumes of the doped CaPs. FTIR spectra revealed the characteristic absorption bands of HAp, &
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-TCP and the ones that were resulted from the F-OH bonds and substitution of the Mg2+ ions. The SEM results revealed the grain sizes in the range of ~197 nm-740 nm. In general, the micro hardness and diametral tensile strength tests revealed that Mg2+ ions in large amounts (7.5 % mole) had negative effects on the mechanical properties of the samples, while substitution of the F- ions had a positive effect on their mechanical properties.
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Felker, Daniel L. "Studies of oxide-free phosphates film surfaces on magnesium, zinc, and manganese by X-ray photoelectron spectroscopy /." Search for this dissertation online, 2005. http://wwwlib.umi.com/cr/ksu/main.

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Dos, Santos Tavares Débora. "Avaliação in vitro do comportamento de células osteoprogenitoras e macrófagos humanos em pastilhas de fosfato tricálcico com e sem magnésio." Phd thesis, Université de Haute Alsace - Mulhouse, 2012. http://tel.archives-ouvertes.fr/tel-00720079.

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En raison de l'augmentation de l'espérance de vie, le nombre de personnes âgées et par conséquent le taux de maladies chroniques augmente de plus en plus nécessitant le développement de nouveaux biomatériaux permettant la réparation osseuse. Le but de cette étude était d'évaluer le comportement in vitro de cellules ostéoprogénitrices cultivées sur des pastilles de phosphate tricalcique dopées (β-TCMP, Mg/Ca = 0,15) ou non (β-TCP) avec du magnésium dans un environnement statique et dynamique (débit de 0,3 mL/min), ainsi que la réponse de macrophages humains après contact avec des extraits des matériaux (ISO10993-12). Les pastilles de β-TCMP et β-TCP ont été obtenues par frittage respectivement d'une apatite calcium déficiente en calcium dopée au magnésium et de TCP (Merck). Les diffractogrammes et les spectres infrarouge ont confirmé la production de β-TCP et de β-TCMP, ratio Mg/Ca = 0,14. Des cellules osteoprogénitrices STRO+1A ont été cultivées sur des pastilles pendant 21 jours et leur comportement de prolifération et de différenciation cellulaire ont été vérifiés. Aucune différence entre les deux pastilles n'a été observée concernant le nombre de cellules après 21 jours de culture, ni sous condition statique ni dynamique. Cependant, il semble que l'environnement dynamique accélère la différenciation ostéoblastique. D'une façon générale, le β-TCMP n'a pas modifié la réponse des macrophages (le profil des cytokines) activés ou non par du lipopolysaccharide bactérien, cultivés pendant 72 heures avec des extraits de biomatériaux, par rapport au β-TCP. D'après ces résultats, les deux biomatériaux semblent être prometteurs pour le traitement des pertes osseuses.
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Nabiyouni, Maryam. "Biomedical Applications of Magnesium Phosphate Nanoparticles." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1418327070.

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Clavier, Batiste. "Synthèse, caractérisations et évaluation de l'activité bactéricide de composés inorganiques à base de cuivre." Thesis, Le Mans, 2019. http://cyberdoc-int.univ-lemans.fr/Theses/2019/2019LEMA1041.pdf.

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Les bactéries pathogènes responsables des infections associées aux soins posent des problèmes permanents et croissants dans les établissements de santé. En France, les bactéries Escherichia coli et Staphylococcus aureus sont responsables de plus de 40% de ces infections. Face à l'adaptation permanente de ces bactéries aux nouveaux antibiotiques mis sur le marché, des solutions complémentaires doivent être trouvées. Une des solutions proposée dans ce travail de thèse vise à exacerber les performances de composés bactéricides connus (effet de synergie) ou à procurer des propriétés bactéricides à des composés inactifs en substituant partiellement des ions magnésium par les ions cuivriques ou vice versa. De nouvelles solutions solides ont ainsi été découvertes. Des réactions dans l'état solide, la co-précipitation, la voie hydrothermale ou la mécanosynthèse ont été employées pour synthétiser des particules de taille micro- ou nanométrique des composés désirés. Une fois obtenues, la Diffraction des Rayons X, les Microscopies Electroniques, l'adsorption de diazote, les spectroscopies IR/UV-visible, l'Analyse ThermoGravimétrique couplée à la Spectrométrie de Masse et la Spectrométrie d'Emission Atomique ont été utilisées afin de déterminer la nature, la composition et la taille de ces particules ainsi que leur stabilité dans l'eau ou sous une atmosphère riche en CO2. L'évaluation des propriétés bactéricides dans l'eau et à 20°C révèle que la substitution partielle du magnésium par le cuivre accroît l'activité des composés à la fois en termes d'amplitude et de cinétique. Ces performances accrues ne sont pas nécessairement liées à la teneur en cuivre dans le composé actif
Bacterial pathogens causing healthcare-associated-infections pose ongoing and increasing challenges to care facilities. In France, Escherichia coli and Staphylococcus aureus are responsible for more than 40% of these infections. Due to the permanent adaptation of these bacteria to new antibiotics placed on the market, complementary solutions must be found. One of these solutions proposed in this thesis work aims to exacerbate performances of known bactericidal materials (synergistic effect) or to provide bactericidal properties to non-active compounds by partially substituting magnesium ions by cupric ones or vice versa. New solid solutions were thus highlighted. Solid state reaction, co-precipitation, hydrothermal routes or mechanosynthesis were employed to synthesize micrometer-sized or nanometer-sized particles of those desired compounds. When obtained, X-Ray Diffraction, electron microscopies, dinitrogen adsorption, IR/UV-visible spectroscopies, ThermoGravimetric Analysis-Mass Spectrometry and Atomic Emission Spectroscopy are used to determine the nature, composition and size of those particles as well as their stability in water or CO2 rich atmosphere. The evaluation of bactericidal properties in water and at 20°C showed that the partial substitution of magnesium by copper enhances the activity of compounds both in terms of magnitude and kinetics. These increased performances are not necessarily related to the copper content in the active compound
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Rostami, Niloufar. "Development of Novel Magnesium Phosphate Bone Cement." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1418326907.

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Ibasco, Suzette. "Magnesium phosphate precipitates and coatings for biomedical applications." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40691.

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Metals are extensively used materials in orthopaedics and oral implants and several research studies have reported that coating the surface improves the osteoconduction and bone bonding ability of the metal. Low temperature aqueous precipitation techniques are advantageous over other coating processes as they allow the incorporation of thermally unstable compounds. Although some magnesium phosphates have been shown to be well tolerated in bone tissue [Zimmermann 2006], they are relatively unstudied as bioceramics. The first part of this research project was to determine the precipitation conditions at which different magnesium phosphate phases form. Ultimately, the primarily goal of this study was to investigate a new low temperature route to produce magnesium phosphate coatings by reacting substrates sputter coated with magnesium metal in an aqueous phosphate solution. X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy dispersion spectroscopy (EDS) were used to characterize and identify the magnesium phosphate precipitates. SEM revealed that coatings formed by the reaction of magnesium metal with ammonium dihydrogen phosphate formed a continuous coating of struvite crystals. Importantly, this coating was durable enough to withstand the peel test (ASTM D 3359). Furthermore, this coating was also useful as a reactive surface to form hydroxyapatite coating. Biocompatibility assays, showed that magnesium phosphates precipitates and coatings were non-toxic and sustained cell viability. This study shows the possibility of forming a number of potentially biocompatible surface coatings on a metal model through a low temperature in situ process. This process shows good promise in producing enhanced coatings with many advantages over currently used techniques.
Les métaux sont largement utilisés comme matériaux dans la conception d’implants orthopédiques et dentaires et plusieurs études ont montré qu’un revêtement de leurs surfaces améliore leur propriété d’ostéoconduction et leur capacité de liaison au tissu osseux. Les techniques de précipitation aqueuse à basse température sont plus élaborées comparées aux autres techniques de revêtement car elles permettent l’incorporation de composés thermiquement instables. Bien que certains phosphates de magnésium soient bien tolérés au sein du tissu osseux [Zimmermann 2006], ils sont relativement peu étudiés comme biocéramiques. La première partie de ce projet de recherche était de déterminer les conditions de précipitations auxquelles les différentes phases des phosphates de magnésium se forment. L’objectif majeur de cette étude était d’explorer une nouvelle méthode, à basse température, pour produire des revêtements de phosphate de magnésium par la réaction de substrats revêtus par pulvérisation avec des métaux magnésiens, dans une solution aqueuse de phosphate.La diffraction des rayons X et la microscopie électronique à balayage, couplée à la spectrométrie par dispersion d’énergie, furent utilisées pour caractériser et identifier les précipités de phosphates de magnésium. La microscopie électronique à balayage a révélé que les revêtements produits par la réaction d’un métal magnésiun avec un phosphate diacide d’ammonium forment un revêtement continu de cristaux de struvite. Ce revêtement présentait également la caractéristique majeure de résister au test d’arrachage. Les tests de biocompatibilité ont montré que les précipités de phosphates de magnésium ainsi que les revêtements de surface étaient non toxiques et amélioraient la viabilité cellulaire. Cette étude démontre la possibilité de former un éventail de revêtements potentiellement biocompatibles à la surface d’un$
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Berg, Camilla. "Influence of Magnesium in theFormation of Phosphate Spheres : A simple method for the fabrication of sphericalparticles of calcium and magnesium phosphate." Thesis, Uppsala universitet, Oorganisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326255.

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Calcium phosphates and recently also magnesium phosphates, are used for medical applications, due to their biocompatibility and bioactivity. These properites makes spherical particles of calcium and magnesium phosphate suitable for carrier materials for drug delivery applications. By creating porous and/or hollow particles itis possible to load the particles with a drug and control therelease of the active substance. In this work, an ion-induced method for the synthesis of spherical calcium and magnesium phosphates was developed. A simple precipitation reaction was used, where substituting magnesium ions could replace the function of templates, such as surfactants or micelles, to induce the formation of spheres of a certain size and morphology. Experimental results showed that magnesium had an inhibitory effect on the nucleation and crystal growth of calcium phosphates. By using substituting ions as a structural regulator, it was possible to alter the size, morphology and phase composition of the spheres. At low magnesium concentrations, the spheres had a smooth surface andwere between 200 nanometer to 1 micrometer in diameter and composed of hydroxyapatite and/or magnesium-substituted beta-TCP. At higher magnesium concentrations, the spheres were about 10-50 micrometer with a rough, flaky surface. Results also proved that calcium ionshave the same effect on the crystallisation and self-assembly of magnesium phosphates. Apart from the magnesium concentration, reaction temperature proved to have a high influence on the sphereformation, whereas Ca/P ratio and reaction times above three hours did not affect the sphere formation to the same extent.
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Barj, Mohamed. "Etude de la structure statique et dynamique de quelques matériaux à mobilité ionique par spectroscopie de vibration et par diffusion de neutrons." Paris 13, 1987. http://www.theses.fr/1987PA132024.

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Etude des composés de la famille nasicon et de composés d'insertion type MPS(3), caracterisés par ir et raman. Les barrières de potentiel locales ont été calculées à partir des modes de phonons des ions conducteurs. Les amplitudes quadratiques spéctroscopiques ont été calculées dans les composés MPS(3) purs. Dans le cas des composés nasicon, on a relié la conductivité élèctrique et le désordre statique. Présentation de résultats de chaleur massique et de calculs d'énergie réticulaire à partir de potentiels atome-atomes. Mise en evidence d'une importante diffusion magnétique des ions Cr(3+) dans Na(3)Cr(2)P(2)O(12)
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Yun, Joanne W. 1970. "Modelling studies of magnesium-dependent phosphate ester processing enzymes." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38776.

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Books on the topic "Magnesium phosphates"

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International Workshop on Phosphate and Other Minerals (7th 1985 Marseille, France). Phosphate and mineral homeostasis. New York: Plenum Press, 1986.

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Dampney, P. M. R. Phosphate, potash and magnesium for grassland. London: Agricultural Development and Advisory Services, 1991.

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Hansen, J. P. Removal of magnesia from dolomitic southern Florida phosphate concentrates by aqueous SO₂ leaching. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Michael, Strong. Calcium phosphate deposition on a magnesium alloy substrate using a simple chemistry technique. Sudbury, Ont: Laurentian University, 2005.

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Ritz, Eberhard, Shaul G. Massry, and Michel Olmer. Phosphate and Mineral Homeostasis. Springer London, Limited, 2013.

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Phosphate and Mineral Homeostasis. Springer London, Limited, 2012.

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Massry, Shaul G. Phosphate and Mineral Metabolism. Springer, 2012.

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(Editor), Shaul G. Massry, Michel Olmer (Editor), and Eberhard Ritz (Editor), eds. Phosphate and Mineral Homeostasis (Advances in Experimental Medicine and Biology). Springer, 1987.

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Konrad, Martin, and Karl P. Schlingmann. Approach to the patient with hypomagnesaemia. Edited by Robert Unwin. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0040.

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The kidneys play a central role in the maintenance of a normal magnesium balance. The distal renal tubule, especially the thick ascending limb of the loop of Henle, and the distal convoluted tubule mediate the regulation of a normal magnesium balance. The clinical assessment of magnesium deficiency is described. Genetic causes are described in detail. Acquired causes are more common and often related to drug therapy or toxicity, or to metabolic acidosis or phosphate depletion.
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Shotliffe, Dr Kevin, Dr Annabel Fountain, Dr Mike Jones, Dr Jennifer Gray, Dr Richard Leach, Dr Richard Leach, Mr Neil Morton, Dr Anthony Toft, Professor John S. Bevan, and Dr Louella Vaughan. Endocrinology and metabolic disorders. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199565979.003.00010.

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Chapter 10 covers endocrinology and metabolic disorders, including diabetes and diabetic coma, abnormalities of sodium and potassium, calcium, magnesium, and phosphate, metabolism, acid-base balance, thyroid emergencies, pituitary emergencies, adrenal emergencies, and toxin-induced hyperthermic syndromes.
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Book chapters on the topic "Magnesium phosphates"

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Ostrowski, Nicole, Vidisha Sharma, Abhijit Roy, and Prashant N. Kumta. "Exploration of Amorphous and Crystalline Tri-Magnesium Phosphates for Bone Cements." In Ceramic Transactions Series, 33–46. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119190134.ch4.

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Bährle-Rapp, Marina. "Magnesium Ascorbyl Phosphate." In Springer Lexikon Kosmetik und Körperpflege, 335. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_6190.

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Gooch, Jan W. "Magnesium Phosphate, Dibase." In Encyclopedic Dictionary of Polymers, 440. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7120.

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Gooch, Jan W. "Magnesium Phosphate, Monobasic." In Encyclopedic Dictionary of Polymers, 440. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7121.

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Gooch, Jan W. "Magnesium Phosphate, Tribasic." In Encyclopedic Dictionary of Polymers, 441. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7122.

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Dirks, John H., and Norman L. M. Wong. "Renal Magnesium Wasting Disorders." In Phosphate and Mineral Homeostasis, 193–97. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-5206-8_23.

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Kuz’mina, Mariya A., Anton M. Nikolaev, and Olga V. Frank-Kamenetskaya. "The Formation of Calcium and Magnesium Phosphates of the Renal Stones Depending on the Composition of the Crystallization Medium." In Lecture Notes in Earth System Sciences, 107–18. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21614-6_6.

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Gooch, Jan W. "Magnesium Hydrogen Phosphate Trihydrate." In Encyclopedic Dictionary of Polymers, 440. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7116.

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Bährle-Rapp, Marina. "Silver Magnesium Aluminum Phosphate." In Springer Lexikon Kosmetik und Körperpflege, 504. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_9377.

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Sankara Narayanan, T. S. N. "Phosphate Conversion." In Conversion Coatings for Magnesium and its Alloys, 73–112. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89976-9_4.

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Conference papers on the topic "Magnesium phosphates"

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Taheri, B., A. Munoz F., R. C. Powell, D. H. Blackburn, and D. C. Cranmer. "Effect of structure and composition of the thermal lensing and permanent laser-induced refractive-index changes in glasses." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mc3.

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We have previously reported the ability to produce permanent refractive-index gratings in rare earth-doped glasses through the creation of laser-induced local structural changes and have shown how thermal lensing affects the grating properties. We present here the extension of this research to the investigation of the effects of glass structure and composition on thermal lensing and on the ability to produce permanent gratings. New types of lithium borate, lead and magnesium silicates and germanates, and a lead phosphate glass were investigated. The results of four-wave mixing experiments show that the grating scattering efficiency is strongly dependent on the strength of the chemical bonds and the charge to radius ratio of the glass components. The thermal lensing properties of these materials under 7-ns pulsed excitation at 457nm can be attributed to the molecular polarizibility of their components. They are also dependent on lead concentration and are stronger in the silicates and germanates, having continuous random network structures, compared to the phosphates and borates with more constrained chain- and ring-type structures, respectively. A model is presented to interpret the results of thermal lensing experiments.
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Sappok, Alexander, Sean Munnis, and Victor W. Wong. "Individual and Synergistic Effects of Lubricant Additive Components on Diesel Particulate Filter Ash Accumulation and Performance." In ASME 2012 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ices2012-81237.

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The current CJ-4 oil specification places a limit on the oil’s sulfated ash content of 1.0% to reduce the build-up of lubricant-derived ash in the diesel particulate filter (DPF). Lubricant additives, specifically detergents and anti-wear additives, contribute to most of the sulfated ash content in the oil and ash accumulation in the DPF, and hence are studied with increasing interest in the optimization of the combined engine-oil-aftertreatment system. However, characteristics of ash deposits found in the particulate filter, which are affected by a number of parameters, differ markedly from those of the ASTM-method defined sulfated ash. In addition, ash characteristics and effects on DPF performance vary substantially among the different metallic base in the additives, specifically calcium, magnesium, and zinc. Through a series of carefully-controlled tests with specially-formulated lubricant additives, this work quantified the individual and combined effects of the most common detergent and anti-wear additives on the ash properties which directly influence DPF pressure drop. The results show that different lubricant additive formulations (Ca, Zn, Mg) produce profound differences in DPF pressure drop. It was found that DPF ash is a complex mixture of metals (Ca, Zn, Mg) in the form of sulfates, phosphates, and oxides. These ash compounds each have unique physical properties, which affect DPF pressure drop differently. In particular, ash containing calcium sulfate compounds resulted in an increase in filter pressure drop by over a factor of two, relative to the same amount of ash composed only of zinc phosphate or magnesium oxide compounds, at the same ash loading in the DPF. In addition, synergistic effects due to specific additive combinations were also explored and showed significant differences in ash composition and degree of exhaust flow restriction imposed by the ash resulting from specific additive combinations, as opposed to the individual additives themselves. Results are useful not only for lubricant formulators to design oils for improved aftertreatment system compatibility, but also to understand the practical effects of ash in the DPF in relation to the standardized sulfated ash definition in the lubricant specification.
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Smith, M., J. A. Ware, E. T. Fossel, and E. W. Salzman. "MEASUREMENT OF CYTOPLASMIC [MG++] IN PLATELETS BY NMR AND NULL-POINT TITRATION WITH ATOMIC ABSORPTION SPECTROSCOPY." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642818.

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Magnesium is a cofactor for phosphatases, kinases, and synthetases in all cells, and thus the cytoplasmic [Mg++] influences most intracellular processes. The concentration of cytoplasmic free Mg++ varies considerably among different cell types and has been measured in platelets, as most techniques for [Mg++] measurement are suitable only for cells large enough to microinject. Incorrect estimates of this value could markedly affect many Intracellular investigations, including calibration of platelet [Ca++] with aequorin and other Ca++ -sensitive probes. We measured cytoplasmic free [Mg++] by two methods in washed, gel-filtered human platelets suspended in modified Tyrode's buffer: NMR spectroscopy of intracellular inorganic phosphates in intact platelets, and a modified null-point titration method in platelets selectively permeabilized with digitonin, using atomic absorption spectroscopy. The phosphorus-31 NMR spectra were obtained at 145.7-5Mhz and the cytoplasmic [Mg++] was calculated from the chemical shift values of ATP resonances; platelet free Mg++ was found to vary between 0.05 and 0.15mM, depending on the Kd used for Mg-ATP in the calculation. The null-point titration method gave a range of 0.1 to 0.35 mM for platelet cytoplasmic Mg++. Although these values are considerably lower than those reported in lymphocytes (ImM) they are consistent with those reported in erythrocytes (0.1-0.3mM) and hepatocytes (0.35mM) by similar methods. As an example of the importance of these determinations, the new [Mg++] values were used to construct a [Ca++] calibration curve for aequorin that proved to indicate lower resting and stimulated [Ca++] values than those obtained from previous curves based on assumed values for [Mg++] of 1.25 mM (by analogy with lymphocytes). This finding largely resolves the discrepancy between resting [Ca++] as determined by aequorin or by fura-2 and indo-1.
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"New Applications of Magnesium Phosphate Cements Magnesium Phosphate Cements." In SP-179: Fourth CANMET/ACI/JCI Conference: Advances in Concrete Technology. American Concrete Institute, 1998. http://dx.doi.org/10.14359/6030.

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Anhua Zou, Jianjun Tang, Tichang Sun, Baozhu Wu, Ting Jia, and Jingyu Wang. "Study on crystallization behavior of magnesium ammonium phosphate." In 2011 Second International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2011. http://dx.doi.org/10.1109/mace.2011.5987743.

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Alfocea-Roig, Anna, Sergio Huete-Hernandez, Alex Maldonado-Alameda, Jessica Giro-Paloma, Josep Maria Chimenos-Ribera, and Joan Formosa-Mitjans. "Development of Animal Fibres Composites for Construction Applications." In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.750.

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Climate change has become one of the world’s leading threats. Currently, the construction industry has a high environmental footprint. For this reason, the scientific and technological sector is looking for new materials to reduce the environmental consequences of this division. It is well known that the valorisation of different by-products can contribute to the reduction of the energy global consumption and CO2 emissions. Magnesium Phosphate Cement (MPC) can be obtained by using Low Grade Magnesium Oxide (LG-MgO) as a by-product from the industrial process of magnesite calcination. In this research, a Sustainable MPC (Sust-MPC) for different construction purposes is developed by using LG-MgO along with monopotassium phosphate KH2PO4 (MKP) as raw materials. The increasing use of synthetic fibres in clothing, as well as China’s competitive prices on Animal Fibres (AF) market, have led to a commercial interest fibre decrease for wool-like AF in Spain. This study aims to formulate a Sust-MPC cement with Animal Fibre (AF) to reduce the cost of the new material (Sust-MPC-AF) and to increase the thermal insulation, allowing the use of Sust-MPC-AF in several potential applications. Besides, it should be emphasized that the final pH of Sust-MPC is neutral, which allows containing natural fibres. To develop Sust-MPC-AF, some properties such as thermal conductivity, density, Modulus of Elasticity (MoE), flexural strength, and economic cost were evaluated using the Design of Experiments (DoE). The DoE studies allowed obtaining a model for further optimization considering minimum thermal conductivity and cost dosages. The formulation 30L-25EW presents the minimum conductivity (λ=0.140 W·m-1·K-1). Therefore, two optimal dosages (36L-25EW and 24L-22EW) are obtained by considering mixing variables such as AF/Cement ratio (AF/C) and AF/Extra Water ratio (AF/EW).
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Adhikari, Udhab, Nava P. Rijal, Shalil Khanal, Devdas Pai, Jagannathan Sankar, and Narayan Bhattarai. "Magnesium and Calcium-Containing Scaffolds for Bone Tissue Regeneration." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66835.

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Bone is a living tissue that constantly remodels and adapts to the stresses imposed upon it. Bone disorders are of growing concern as the median age of our population rises. Healing and recovery from fractures requires bone cells to have a 3-dimensional (3D) structural base, or scaffold, to grow out from. In addition to providing mechanical support, the scaffold, an extracellular matrix (ECM) assembly, enables the transport of nutrients and oxygen in and removal of waste materials from cells that are growing into new tissue. In this research, a 3D scaffold was synthesized with chitosan (CS), carboxymethyl chitosan (CMC), calcium phosphate monobasic and magnesium oxide (MgO). CS is a positiviely-charged natural bioactive polymer. It is combined with its negatively-charged derivative, CMC, to form a complex scaffold. Magnesium phosphate biocement (MgP), formed by reacting calcium phosphate monobasic and MgO, was incorporated into CMC solution before adding CS solution. Scaffolds were prepared by casting, freezing and lyophilization. The scaffolds were characterized in terms of pore microstructures, surface topography, water uptake and retention abilities, and crystal structure. The results show that the developed scaffolds exhibit highly interconnected pores and present the ideal pore size range (100–300 μm) to be morphometrically suitable for the proposed bone tissue engineering applications. These scaffolds not only mimic the nanostructured architecture and the chemical composition of natural bone tissue matrices but also serve as a source for soluble ions of magnesium (Mg++) and calcium (Ca++) that are favorable to osteoblast cells. The scaffolds thus provide a desirable microenvironment to facilitate biomineralization. These observations provide a new effective approach for preparing scaffold materials suitable for bone tissue engineering.
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Anhua Zou and Jianjun Tang. "Progress in the study of magnesium ammonium phosphate crystallization reactor." In 2011 International Conference on Business Management and Electronic Information (BMEI). IEEE, 2011. http://dx.doi.org/10.1109/icbmei.2011.5921080.

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Akbar, Imam, and Sukyoung Kim. "Characteristic of magnesium substituted octacalcium phosphate prepared by precipitation method." In SECOND INTERNATIONAL CONFERENCE OF MATHEMATICS (SICME2019). Author(s), 2019. http://dx.doi.org/10.1063/1.5096677.

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Iskandar, Maria E., Jaclyn Y. Lock, Arash Aslani, and Huinan Liu. "Controlling the Biodegradation of Magnesium Implants Through Nanostructured Coatings." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65901.

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Magnesium (Mg) alloys, a novel class of degradable, metallic biomaterials, have attracted growing interest as a promising alternative for medical implant and device applications due to their advantageous mechanical and biological properties. Moreover, magnesium is biodegradable in the physiological environments. The major obstacle for Mg to be used as medical implants is its rapid degradation in physiological fluids. Therefore, the present key challenge lies in controlling Mg degradation rate in the physiological environment. The objective of this study is to develop a nanostructured-hydroxyapatite (nHA) coating on Mg implants to control the degradation and bone tissue integration of the implants. Nanostructured-HA coatings are deposited on magnesium using the Spire’s patented TPA process to moderate the aggressive degradation of magnesium and to improve fast osteointegration between magnesium and natural bone. Morphology and element compositions were characterized using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) analysis. The degradation of nHA coated Mg and uncoated Mg was investigated by incubating samples in phosphate buffered saline (PBS) under standard cell culture conditions. The degradation results suggest the nanocoatings positively mediated magnesium degradation. Therefore, nHA coatings are promising for controlling the biodegradation of magnesium-based orthopedic implants and devices.
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Reports on the topic "Magnesium phosphates"

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Langton, C., and D. Stefanko. MAGNESIUM MONO POTASSIUM PHOSPHATE GROUT FOR P-REACTOR VESSEL IN-SITU DECOMISSIONING. Office of Scientific and Technical Information (OSTI), January 2011. http://dx.doi.org/10.2172/1011325.

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Wagh, A. S., D. Singh, and S. Y. Jeong. Stabilization of hazardous ash waste with newberyite-rich chemically bonded magnesium phosphate ceramic. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/510298.

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Ramsey, Monica, Dylan Scott, Charles Weiss, and Jeb Tingle. Effects of boric acid and water content on fundamental properties of proprietary magnesium phosphate cement (MPC) products. Engineer Research and Development Center (U.S.), April 2020. http://dx.doi.org/10.21079/11681/36393.

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Ramsey, Monica, Dylan Scott, Charles Weiss, and Jeb Tingle. Development of magnesium phosphate cement (MPC) concrete mixture proportioning for airfield pavements : laboratory and field validation MPC test report. Engineer Research and Development Center (U.S.), February 2020. http://dx.doi.org/10.21079/11681/35475.

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Pokrzywinski, Kaytee, Cliff Morgan, Scott Bourne, Molly Reif, Kenneth Matheson, and Shea Hammond. A novel laboratory method for the detection and identification of cyanobacteria using hyperspectral imaging : hyperspectral imaging for cyanobacteria detection. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40966.

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To assist US Army Corps of Engineers resource managers in monitoring for cyanobacteria bloom events, a laboratory method using hyperspectral imaging has been developed. This method enables the rapid detection of cyanobacteria in large volumes and has the potential to be transitioned to aerial platforms for field deployment. Prior to field data collection, validation of the technology in the laboratory using monocultures was needed. This report describes the development of the detection method using hyperspectral imaging and the stability/reliability of these signatures for identification purposes. Hyperspectral signatures of different cyanobacteria were compared to evaluate spectral deviations between genera to assess the feasibility of using this imaging method in the field. Algorithms were then developed to spectrally deconvolute mixtures of cyanobacteria to determine relative abundances of each species. Last, laboratory cultures of Microcystis aeruginosa and Anabaena sp. were subjected to varying macro (nitrate and phosphate) and micro-nutrient (iron and magnesium) stressors to establish the stability of signatures within each species. Based on the findings, hyperspectral imaging can be a valuable tool for the detection and monitoring of cyanobacteria. However, it should be used with caution and only during stages of active growth for accurate identification and limited interference owing to stress.
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