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Journal articles on the topic 'Magnesium-Calcium Phosphate'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

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

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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 (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

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3

Conti, Claudia, Léa Cutard, Alessandra Botteon, et al. "Investigation of Calcium and Magnesium Phosphate Crystals in Stones Treated with Diammonium Hydrogen Phosphate Conservation Product: Potential of Micro-Raman Spectroscopy." Crystals 13, no. 8 (2023): 1212. http://dx.doi.org/10.3390/cryst13081212.

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This study is aimed at investigating crystals (calcium and magnesium phosphates) formed due the interaction of an inorganic conservation treatment (diammonium hydrogen phosphate—DAP) with carbonatic (calcitic and dolomitic) stones through micro-Raman Spectroscopy. The addressed questions concern (i) the identification of magnesium and calcium phosphate minerals crystallized within dolomitic stone samples with a different degree of conservation state and treated with two different DAP solution molarities and (ii) the distinction of complex calcium phosphate mixtures (hydroxyapatite—HAP and octa

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4

Bazydlo, Lindsay A. L., Marisa Needham, and Neil S. Harris. "Calcium, Magnesium, and Phosphate." Laboratory Medicine 45, no. 1 (2014): e44-e50. http://dx.doi.org/10.1309/lmglmz8ciymfnogx.

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5

Mortensen, Lene, Lars Hyldstrup, and Peder Charles. "Effect of vitamin D treatment in hypoparathyroid patients: a study on calcium, phosphate and magnesium homeostasis." European Journal of Endocrinology 136, no. 1 (1997): 52–60. http://dx.doi.org/10.1530/eje.0.1360052.

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Abstract Aim: This study was undertaken to examine the effects of long-term vitamin D treatment on calcium, phosphate and magnesium homeostasis at organ level in hypoparathyroid patients. Methods: Fifteen vitamin D-treated hypoparathyroid patients were studied, eight of the patients in a combined 47Ca kinetic and calcium, phosphate and magnesium balance study. Results were compared with a matched control group of 12 normal individuals. Results: All the patients had normal serum levels of calcium, phosphate and magnesium. Absolute intestinal calcium absorption was increased (P <00001). Urina

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6

K., Thanigai Arul*1 J. Ramana Ramya2. "MULTIFUNCTIONAL BEHAVIOUR OF MAGNESIUM/CALCIUM PHOSPHATE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 8 (2017): 15–18. https://doi.org/10.5281/zenodo.839105.

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Pure and magnesium/nano hydroxyapatite (HAp) prepared by microwave route. The sample was analyzed by X-Ray Diffraction (XRD), photoluminescence (PL) and bioactivity. The XRD analysis was revealed that pure phase of HAp. As the concentration of magnesium ion increases, the average crystallite was reduced. The PL and <em>in vitro</em> bioactivity of the doped sample were enhanced. Hence, magnesium based calcium phosphate could be a suitable candidate for multifunctional applications.

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7

Kostka, Kathrin, Shabnam Hosseini, and Matthias Epple. "In-Vitro Cell Response to Strontium/Magnesium-Doped Calcium Phosphate Nanoparticles." Micro 3, no. 1 (2023): 156–71. http://dx.doi.org/10.3390/micro3010012.

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Calcium phosphate nanoparticles are highly biocompatible and biodegradable in bone regeneration. On the other hand, strontium and magnesium enhance the formation of bone. The substitution of calcium by strontium and magnesium is an efficient way to improve the biological properties of calcium phosphate-based biomaterials. Strontium-doped calcium phosphate nanoparticles and magnesium-doped calcium phosphate nanoparticles with degrees of cation substitution of 5, 10, 15, and 20 mol% with respect to calcium were prepared by precipitation, followed by surface functionalization with polyethyleneimi

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8

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 (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 app

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9

Arora, Nayan, and Abbal Koirala. "Calcium, Magnesium and Phosphate Disorders." Advances in Kidney Disease and Health 32, no. 1 (2025): 50–60. https://doi.org/10.1053/j.akdh.2024.10.007.

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10

Thumchai, Rosama, Jody Lulich, Carl A. Osborne, et al. "Epizootiologic evaluation of urolithiasis in cats: 3,498 cases (1982–1992)." Journal of the American Veterinary Medical Association 208, no. 4 (1996): 547–51. http://dx.doi.org/10.2460/javma.1996.208.04.547.

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Objective To test the hypothesis that breed, sex, and age of cats, and anatomic location of uroliths are risk factors for calcium oxalate and magnesium ammonium phosphate urolithiasis. Design Retrospective case-control study. Sample Population Records of 3,498 feline urolith accessions submitted between September 1982 and September 1992. Procedure Mineral composition of feline uroliths was quantitatively analyzed. Odds ratios and 95% confidence intervals were calculated for breed, sex, age, and urolith location as risk factors for calcium oxalate and magnesium ammonium phosphate urolith format

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11

Cao, Liehu, Weizong Weng, Xiao Chen, et al. "Effects of mesoporous calcium magnesium silicate on setting time, compressive strength, apatite formation, degradability and cell behavior to magnesium phosphate based bone cements." RSC Advances 7, no. 2 (2017): 870–79. http://dx.doi.org/10.1039/c6ra25503e.

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12

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 o

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13

Wang, Qiang, Lili Tan, Qiang Zhang, Jianhong Qiu, and Ke Yang. "PRECIPITATION CONTROL AND MECHANICAL PROPERTY OF CALCIUM PHOSPHATE–COATED AZ31B ALLOY FOR BIOMEDICAL APPLICATION." Biomedical Engineering: Applications, Basis and Communications 23, no. 03 (2011): 193–203. http://dx.doi.org/10.4015/s1016237211002529.

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Surface modification is believed to be an effective way to control the biodegradation rate of magnesium alloys and improve their biological properties. In the present work, a calcium phosphate (Ca-P) coating was prepared on the AZ31B magnesium alloy by a chemical deposition method to integrate the mechanical advantages of the magnesium substrate and the good bioactivity of the ceramic coating. It was shown that the coating was mainly composed of magnesium and calcium phosphates. Scanning electron microscope coupled with the energy dispersive spectrum analyses showed that rough and crystallined

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14

Bos, W. J. W., D. S. Postma, and J. J. van Doormaal. "Magnesiuric and calciuric effects of terbutaline in man." Clinical Science 74, no. 6 (1988): 595–97. http://dx.doi.org/10.1042/cs0740595.

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1. The effect of terbutaline infusion over 4 h on serum levels of potassium, ionized calcium, phosphate and magnesium and urinary excretion of potassium, calcium, magnesium and adenosine 3′:5′-cyclic monophosphate was studied in six healthy volunteers. 2. Serum levels of potassium, calcium, phosphate and magnesium decreased. Urinary excretion of potassium decreased, whereas those of calcium, magnesium and adenosine 3′:5′-cyclic monophosphate increased. 3. These results indicate that the hypocalcaemic and hypomagnesaemic effects of terbutaline can, at least partly, be explained by enhanced urin

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15

Mohanlal, Dhirenda, John M. Pettifor, and Gopal P. Moodley. "Serum Calcium and Phosphate Disturbances During Rehydration in Acute Dehydrating Gastroenteritis." Journal of Pediatric Gastroenterology and Nutrition 6, no. 2 (1987): 252–56. http://dx.doi.org/10.1002/j.1536-4801.1987.tb09281.x.

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SummaryAlterations in serum ionized and total calcium, magnesium, and phosphate concentrations, during recovery from acute dehydrating gastroenteritis, were studied. Fifteen children with acute dehydrating gastroenteritis had serum concentrations of ionized and total calcium, magnesium, phosphate, sodium, potassium, chloride, urea, creatinine, and albumin, as well as acid‐base status, evaluated during rehydration and up to 72‐h postadmission. The total serum calcium corrected for albumin did not change significantly during rehydration and remained within the normal range. Although serum ionize

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16

Karfarma, Masoud, Mohammad Hossein Esnaashary, Hamid Reza Rezaie, Jafar Javadpour, and Mohammad Reza Naimi-Jamal. "Poly(propylene fumarate)/magnesium calcium phosphate injectable bone composite: Effect of filler size and its weight fraction on mechanical properties." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 233, no. 11 (2019): 1165–74. http://dx.doi.org/10.1177/0954411919877277.

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This study aimed to produce a composite of poly(propylene fumarate)/magnesium calcium phosphate as a substitutional implant in the treatment of trabecular bone defects. So, the effect of magnesium calcium phosphate particle size, magnesium calcium phosphate:poly(propylene fumarate) weight ratio on compressive strength, Young’s modulus, and toughness was assessed by considering effective fracture mechanisms. Micro-sized (∼30 µm) and nano-sized (∼50 nm) magnesium calcium phosphate particles were synthesized via emulsion precipitation and planetary milling methods, respectively, and added to poly

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17

Strutynska, Natalia, Mykola Slobodyanik, and Yeva Komashchenko. "PECULIARITIES OF CALCIUM PHOSPHATES DOPING WITH TRACE ELEMENTS." Ukrainian Chemistry Journal 90, no. 10 (2024): 59–68. https://doi.org/10.33609/2708-129x.90.10.2024.59-68.

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The calcium phosphate formation Сa2+-Mg2+-Na+-PO43--NO3- at the molar ratios Сa2+: Mg2+: Na+: PO43-= (10-х-y/2) : х : y : 6, (x = 0.1, 0.25, 0.5, 0.75; у = 0.25, 0.5, 0.75, 1.0) at temperature 25°С and further heating to 600 °С has been investigated. The conditions for formation of apatite-related calcium phosphate that contains trace elements magnesium and sodium (0.5 wt% of both) in the system with molar ratio Сa2+ : Mg2+ : Na+ : PO43- -= (10-х-y/2) : 0.1 : 0.25 : 6 as well as biphasic calcium phosphates (mixture of phases based on Са10(РО4)6(ОН)2 – hexagonal system, space group Р63/m and β-

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18

Shoji, Tetsuo, Katsuhito Mori, Yu Nagakura, et al. "Associations of Cognitive Function with Serum Magnesium and Phosphate in Hemodialysis Patients: A Cross-Sectional Analysis of the Osaka Dialysis Complication Study (ODCS)." Nutrients 16, no. 21 (2024): 3776. http://dx.doi.org/10.3390/nu16213776.

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Cognitive impairment and dementia are common in patients with chronic kidney disease, including those undergoing hemodialysis. Since magnesium and phosphate play important roles in brain function and aging, alterations in these and other factors related to bone mineral disorder (MBD) may contribute to low cognitive performance in patients on hemodialysis. This cross-sectional study examined the associations between cognitive function and MBD-related factors among 1207 patients on maintenance hemodialysis. Cognitive function was assessed by the Modified Mini-Mental State examination (3MS). The

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19

Ortola, F. V., B. J. Ballermann, and B. M. Brenner. "Endogenous ANP augments fractional excretion of Pi, Ca, and Na in rats with reduced renal mass." American Journal of Physiology-Renal Physiology 255, no. 6 (1988): F1091—F1097. http://dx.doi.org/10.1152/ajprenal.1988.255.6.f1091.

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Atrial natriuretic peptide (ANP) infusion increases fractional excretion of many solutes including sodium, chloride, bicarbonate, phosphate, calcium, and magnesium. Because fractional excretion of these solutes increases with advancing renal disease, and because plasma ANP levels are known to be elevated in chronic renal failure, we sought to determine whether ANP mediates increased solute excretion rates per nephron in rats following extensive renal ablation, a model of chronic renal failure. Because sodium restriction decreases plasma ANP levels in the setting of reduced renal mass, we also

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20

Öhman, Sten, Lasse Larsson, and Hans-Göran Tiselius. "Clinical Significance of Phosphate in Calcium Oxalate Renal Stones." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 29, no. 1 (1992): 59–63. http://dx.doi.org/10.1177/000456329202900108.

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We analysed calcium, magnesium, oxalate, citrate, urate and creatinine in urine and calculated risk factors in patients who had formed stones composed of calcium oxalate, and calcium phosphate, alone or as a mixture. Patients producing pure calcium oxalate stones (< 0·1% phosphate) had a higher oxalate, and lower calcium excretion than stone-free subjects and patients forming other stone types. In contrast, patients producing calcium oxalate stones containing phosphate, even in trace amounts (> 0·1%) had no increase in oxalate excretion, but a higher calcium excretion than stone-free sub

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21

Hasselbach, Wilhelm. "Pressure Effects on the Interactions of the Sarcoplasmic Reticulum Calcium Transport Enzyme with Calcium and Dinitrophenyl Phosphate." Zeitschrift für Naturforschung C 43, no. 11-12 (1988): 929–37. http://dx.doi.org/10.1515/znc-1988-11-1221.

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Abstract The effect of hydrostatic pressure on the calcium-dependent hydrolysis of dinitrophenyl phosphate by the sarcoplasmic calcium transport enzyme has been studied. The magnesium dinitrophenyl phosphate complex is the true substrate of the enzyme (K - 7000 M-1) by which it is hydrolyzed at 20 °C with a turnover rate of 4 s-1 . Activation by calcium ions occurs between 0.1 and 1 μM as observed for ATP hydrolysis. The activation volume of the enzyme saturated with both ligands exhibits pronounced pressure-dependence, rising from 25 ml/mol at atmospheric pressure to 80 ml/mol at 100 MPa. The

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22

Lubi, Maire, Kaia Tammiksaar, Svetlana Matjus, Eero Vasar, and Vallo Volke. "Magnesium Supplementation Does Not Affect Blood Calcium Level in Treated Hypoparathyroid Patients." Journal of Clinical Endocrinology & Metabolism 97, no. 11 (2012): E2090—E2092. http://dx.doi.org/10.1210/jc.2012-2301.

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Context: Magnesium is involved in the homeostasis of calcium metabolism, and magnesium deficiency may lead to clinically significant hypocalcemia. We have had two cases in our department in which treated hypoparathyroid patients with stable calcium levels developed hypercalcemia in conjunction with supplementary magnesium use. To our knowledge, there has been no prospective study looking at the effect of supplementary magnesium on calcium homeostasis in hypoparathyroid patients. Objective: The aim of this pilot study was to evaluate whether magnesium treatment affects plasma calcium levels in

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23

KENT, JACQUELINE C., PETER G. ARTHUR, and PETER E. HARTMANN. "Citrate, calcium, phosphate and magnesium in sows' milk at initiation of lactation." Journal of Dairy Research 65, no. 1 (1998): 55–68. http://dx.doi.org/10.1017/s0022029997002574.

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Colostrum and milk were collected from ten sows at frequent intervals from before farrowing until 9 d after farrowing. Ionized calcium, pH, and total concentrations of citrate, calcium, phosphate and magnesium were measured in whole milk. The diffusible fraction of the mammary secretion was separated by ultrafiltration and was used for the measurement of diffusible citrate, calcium, phosphate and magnesium. The pH before farrowing was 5·7, and increased to 6·5 on day 4 as total calcium and phosphate also increased. Before farrowing, total and diffusible citrate were 7·8 and 7·3 mM respectively

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Qi, Chao, Ying-Jie Zhu, Feng Chen, and Jin Wu. "Porous microspheres of magnesium whitlockite and amorphous calcium magnesium phosphate: microwave-assisted rapid synthesis using creatine phosphate, and application in drug delivery." Journal of Materials Chemistry B 3, no. 39 (2015): 7775–86. http://dx.doi.org/10.1039/c5tb01106j.

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Porous microspheres of magnesium whitlockite and amorphous calcium magnesium phosphate have been synthesized using creatine phosphate as a biocompatible phosphorus source by the rapid microwave-assisted hydrothermal method.

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Goldberg, M. A., V. V. Smirnov, D. R. Khairytdinova, et al. "Bone cements of calcium-magnesium phosphate and magnesium oxide." Journal of Physics: Conference Series 1347 (December 2019): 012075. http://dx.doi.org/10.1088/1742-6596/1347/1/012075.

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Radovenchyk, Yaroslav, Kateryna Hordiienko, Tamara Krysenko, and Vіacheslav Radovenchyk. "Efficiency of magnesium ions removal from water in processes of its mitigation." Proceedings of the NTUU “Igor Sikorsky KPI”. Series: Chemical engineering, ecology and resource saving, no. 4 (December 23, 2022): 88–94. http://dx.doi.org/10.20535/2617-9741.4.2022.269815.

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Significant concentrations of calcium and magnesium ions in natural waters force the majority of domestic drinking and energy waters to undergo preliminary softening. Therefore, mitigation technologies are becoming particularly acute today, and research in this field is increasing every year. Since water hardness is determined by the total content of calcium and magnesium ions, these elements are the focus of such research.  Traditionally, it is believed that calcium ions are the first to be removed, and magnesium ions are less likely to form a solid phase. However, the effectiveness of

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Zheng, Jing, Xiaotian Zhou, Yuxin Gao, et al. "Effects of Fertilizers and Conditioners on Chromium Uptake of Maize in Chromium-Polluted Farmland." Sustainability 15, no. 17 (2023): 13011. http://dx.doi.org/10.3390/su151713011.

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Using agronomic measures to remediate heavy metal chromium (Cr) on farmland is the main measure to achieve the safe utilization of crops. This study was conducted under field trial conditions using locally formulated fertilizers (urea–ammonium phosphate–potassium chloride) as the control. Different fertilizer-type treatments such as ammonium sulfite, calcium magnesium phosphate, and diammonium phosphate were set up. Biochar and soil conditioner PX5B were chosen to compare the impacts of each to study the effects of different fertilizer types on maize yield, Cr content in each part, the bioconc

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Cheng, P. T., and J. J. Grabher. "Formation and transformation of biological calcium phosphates: effects of calcium, magnesium and phosphate." Acta Crystallographica Section A Foundations of Crystallography 43, a1 (1987): C88. http://dx.doi.org/10.1107/s0108767387083119.

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S, POONGOTHAI. "AVAILABILITY AND UPTAKE OF CALCIUM AND MAGNESIUM BY RICE." Madras Agricultural Journal 82, January (1995): 29–30. http://dx.doi.org/10.29321/maj.10.a01115.

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Field experiments in a black clay loam soil with rice IR60 as test crop showed that addition of mussooriephos either with green leaf manure at 10t/ha or with diammonium phosphate en hanced the availability of calcium and magnesium, while diammonium phosphate at 50kg P₂Os/ha recorded the highest grain and straw yield and thereby enhanced the uptake of calcium and magnesium.

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Mudruk, N. V., M. V. Maslova, and A. I. Nikolaev. "Synthesis of novel composite sorbents based on titanium, calcium and magnesium phosphates." Доклады Российской академии наук. Химия, науки о материалах 514, no. 1 (2024): 32–40. http://dx.doi.org/10.31857/s2686953524010033.

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Heterogonous and mechanochemical synthesis of new materials based on titanium, calcium and magnesium phosphates have been developed for the first time. Final products demonstrate high sorption efficiency towards heavy metal cations and radionuclides. The combined action of the components ensures high sorption capacity towards different cations within a wide pH range. The optimal conditions of the processes providing the obtaining of composite products with given phase composition have been established. Using solid precursors and phosphorus-containing agents taken in a stoichiometric ratio, and

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Evsanaa, Baigalmaa, Irene Liu, Babak Aliazardeh, et al. "MgCaCO3Versus CaCO3in Peritoneal Dialysis Patients – a Cross-over Pilot Trial." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 35, no. 1 (2015): 31–34. http://dx.doi.org/10.3747/pdi.2013.00129.

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BackgroundDespite adverse effects such as constipation, vascular calcification, and hypercalcemia, calcium-based salts are relatively affordable and effective phosphate binders that remain in widespread use in the dialysis population. We conducted a pilot study examining whether the use of a combined magnesium/calcium-based binder was as effective as calcium carbonate at lowering serum phosphate levels in peritoneal dialysis (PD) patients.MethodsThis was a cross-over, investigator-masked pilot study in which prevalent PD patients received calcium carbonate alone (200 mg calcium per tablet) or

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Morimatsu, H., S. Uchino, R. Bellomo, and C. Ronco. "Continuous Veno-Venous Hemodiafiltration or Hemofiltration: Impact on Calcium, Phosphate and Magnesium Concentrations." International Journal of Artificial Organs 25, no. 6 (2002): 512–19. http://dx.doi.org/10.1177/039139880202500605.

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Background and Objectives Different techniques of continuous renal replacement therapy (CRRT) might have different effects on calcium, phosphate and magnesium concentrations. Accordingly, we tested whether continuous veno-venous hemodiafiltration (CVVHDF) or continuous venovenous hemofiltration (CVVH) would achieve better control of these electrolytes. Design Retrospective controlled study Setting Two tertiary Intensive Care Units Patients Critically ill patients with acute renal failure (ARF) treated with CVVHDF (n=49) or CVVH (n=50) Interventions Retrieval of daily morning ionized calcium, p

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Malinowska, Justyna, Milena Małecka-Giełdowska, and Olga Ciepiela. "Dysmagnesemia Is the Most Common Disturbance of the Calcium–Magnesium–Phosphorous Balance among Older Hospitalized People in Warsaw." Nutrients 13, no. 10 (2021): 3395. http://dx.doi.org/10.3390/nu13103395.

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The elderly are at great risk of developing life-threatening disturbances in calcium–magnesium–phosphate homeostasis because of comorbidities, long-term medication use, and dietary deficiencies, but it is still not known how often they occur in this group of patients. This study aimed to assess the prevalence of these disturbances in a group of hospitalized patients over 65 years of age according to age and sex. The study was conducted between January 2018 and September 2020 at the Central Clinical Hospital in Warsaw. A total of 66,450 calcium, magnesium, phosphate, and vitamin D concentration

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Najmiddinov, Rixsitilla Yunusali o'g'li Shamshidinov Israiljon Turgunovich Qodirova Gulnoza Qodirjonovna Sayfiddinov Osimkhan Obiddin o'g'li. "PURIFICATION OF PHOSPHORIC ACID FROM IMPURITIES IN THE EXTRACTION PROCESS AND RESEARCH OF OBTAINING HIGH-QUALITY NITROGEN-PHOSPHORIC FERTILIZERS." MODELS AND METHODS IN MODERN SCIENCE 1, no. 16 (2022): 86–99. https://doi.org/10.5281/zenodo.7340526.

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The aim of the research is the removal of phosphoric acid from Central Kyzylkum phosphates by fluoride and sulphate additives during the extraction of phosphoric acid, iron and aluminium, calcium, magnesium, sulphate, fluorine during the ammonium phosphate acid extraction phase. Study the process of producing environmentally friendly and fully water-soluble ammonium phosphates.

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Khopta, N. S., A. L. Romaniuk, L. Ja Netchitajlo, and A. M. Ersteniuk. "Metabolic processes in the body and bones of experimental animals under conditions of exposure by cadmium and nitrite ions." Animal Biology 27, no. 1 (2025): 15–20. https://doi.org/10.15407/animbiol27.01.015.

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Heavy metals, including cadmium, and also nitrates and nitrites, belong to the most common environmental pollutants. It is known that the condition of bone tissue is determined by the coherence of de- and remineralization processes, the balance of calcium-phosphate metabolism, the content of essential bioelements, and the activity of enzymes that ensure the degree of bone mineral density. The experiment studied markers of bone metabolism in blood plasma and femurs of white male rats under conditions of complex action of cadmium ions and nitrites. Intoxication of animals was carried out for 10

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Strutynska, N. Yu, Ye O. Komashchenko, O. V. Livitska, I. I. Grynyuk, and D. K. Prochorenko. "Sodium, magnesium and carbonate-containing calcium phosphates: synthesis and investigation." Functional Materials 32, no. 1 (2025): 35–41. https://doi.org/10.15407/fm32.01.35.

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The results of calcium phosphates formation in an aqueous solution of Сa2+-Mg2+-Na+-PO43--CO32--NO3– systems at different molar ratios of Сa2+:Mg2+:Na+:PO43-:CO32– = (10-х-y/2–z/2) : х : y : (6-z) : z, (x = 0.25, 0.5, 0.75; у = 0.25, 0.5, 0.75, 1.0; z = 0.5, 1.0) at a temperature of 25°С with subsequent heating at 600°С for 2 hours are presented. In the case of a system with molar ratios Сa2+:Mg2+:Na+:PO43-:CO32– = (10-х-y/2–z/2) : х : y : 5.5 : 0.5 for x = 0.25 regardless of the amount of sodium cations (y = 0.25–1.0), modified apatite-type calcium phosphates (hexagonal system, space group Р6

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Cave, M. R., David Farrar, and Adrian J. Wright. "Organic/Inorganic Hybrid Calcium Phosphate Biomaterials." Key Engineering Materials 361-363 (November 2007): 383–86. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.383.

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Calcium alkyl phosphates and their strontium and magnesium analogues were synthesised by the reaction of aqueous metal salts with a range of alkyl phosphates of varying chain length and were characterised by X-ray diffraction, thermogravimetric and FTIR analyses. These hybrid structures are based on alternating organic/metal phosphate regions and were found to exhibit a linear increase in interlayer separation upon increasing the length of the alkyl chain. Our analysis suggests a general formula for these phases of M(ROPO3).nH2O (where M = Ca, Sr, Mg and R = alkyl group), containing alkyl bila

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Sader, Marcia, Denisar Ismério, Mônica C. Andrade, Gloria D. Soares, Ivan N. Bastos, and Gustavo M. Platt. "Characterization and Dissolution Dynamics of Tricalcium Phosphates in Acidified Solution." Journal of Biomimetics, Biomaterials and Tissue Engineering 18 (December 2013): 61–71. http://dx.doi.org/10.4028/www.scientific.net/jbbte.18.61.

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Bioceramics used in biomedical applications must exhibit specific behaviors. In scaffolds, for instance, the degradability of bioceramics is important to allow the cell ingrowth. Therefore, the dissolution of calcium phosphates increases the ionic concentrations around the interface implant–bone, favoring a more rapid bone apposition to the graft surface. The dissolution takes place under static or dynamic conditions, but the latter is usually not performed under rigorous hydrodynamic control. In the present work, two bioceramics, β-tricalcium phosphate and β-tricalcium phosphate substituted b

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Liu, Zhichao, Honglei Yue, Jianhua Zhu, and Jianmin Han. "In Vivo Degradation Behavior of AZ91 Magnesium Alloy: Comprehensive Microstructural and Crystallographic Characterization by TEM and NBED." Materials 18, no. 7 (2025): 1500. https://doi.org/10.3390/ma18071500.

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Magnesium alloys have attracted significant attention in recent years as biodegradable metals. However, their degradation mechanisms in vivo remain insufficiently understood. The present work investigates the degradation mechanism of AZ91 magnesium alloy in a critical-size rat defect model over an 8-week period in vivo, employing advanced characterization techniques such as transmission electron microscopy (TEM) and nanobeam electron diffraction (NBED). The degradation layer is observed to consist of three distinct sub-layers: a dense and compact poor crystallinity layer (PCL) layer primarily

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Krokhicheva, P. A., M. A. Goldberg, D. R. Khairutdinova, et al. "Magnesium–Calcium Phosphate Cements with Sodium Hyaluronate." Inorganic Materials: Applied Research 14, no. 2 (2023): 384–91. http://dx.doi.org/10.1134/s2075113323020284.

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Jia, Junfeng, Huanjun Zhou, Jie Wei, et al. "Development of magnesium calcium phosphate biocement for bone regeneration." Journal of The Royal Society Interface 7, no. 49 (2010): 1171–80. http://dx.doi.org/10.1098/rsif.2009.0559.

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Magnesium calcium phosphate biocement (MCPB) with rapid-setting characteristics was fabricated by using the mixed powders of magnesium oxide (MgO) and calcium dihydrogen phosphate (Ca(H 2 PO 4 ) 2 ·H 2 O). The results revealed that the MCPB hardened after mixing the powders with water for about 7 min, and the compressive strength reached 43 MPa after setting for 1 h, indicating that the MCPB had a short setting time and high initial mechanical strength. After the acid–base reaction of MCPB containing MgO and Ca(H 2 PO 4 ) 2 ·H 2 O in a molar ratio of 2 : 1, the final hydrated products were Mg

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Apanasevich, Natalia S., Konstantin N. Lapko, Alexander N. Kudlash, Aliaksei A. Sokal, Yury D. Kliaulin, and Konstantin V. Vishnevskii. "Preparation and study of thermostable composites based on solid magnesium phosphate and calcium phosphate binders." Journal of the Belarusian State University. Chemistry, no. 2 (September 22, 2021): 50–61. http://dx.doi.org/10.33581/2520-257x-2021-2-50-61.

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Thermostable composite materials based on solid magnesium phosphate and calcium phosphate, as well as hybrid calcium magnesium phosphate binders have been developed and investigated. Thermal and phase transformations of the phosphate composites have been studied. Strength characteristics of composite materials have been determined in the temperature range of 20–1000 °C. It is shown that the obtained phosphate composites have high strength properties (compressive strength reaches 120–130 MPa) and are characterised by high thermal stability in the temperature range up to 1000 °С. The low weight

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GOZALIAN, AFSANEH, ALI ASGHAR BEHNAMGHADER, and ARASH MOSHKFOROUSH. "CRYSTAL ANALYSIS OF MULTI PHASE CALCIUM PHOSPHATE NANOPARTICLES CONTAINING DIFFERENT AMOUNT OF MAGNESIUM." International Journal of Modern Physics: Conference Series 05 (January 2012): 196–203. http://dx.doi.org/10.1142/s2010194512002024.

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In this study, Mg doped hydroxyapatite [( Ca , Mg )10( PO 4)6( OH )2] and β-tricalcium phosphate nanoparticles were synthesized via sol gel method. Triethyl phosphite, calcium nitrate tetrahydrate and magnesium nitrate hexahydrate were used as P , Ca and Mg precursors. The ratio of ( Ca + Mg )/ P and the amount of magnesium ( x ) were kept constant at 1.67 and ranging x = 0 up to 3 in molecular formula of Ca 10- x Mg x ( PO 4)6( OH )2, respectively. Phase composition and chemical structure were performed using X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR). Phase p

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Omasta, Miroslav, and Branislav Hadzima. "Study of Calcium Phosphate (OCP) Electrodeposition Process on Elektron 21 Magnesium Alloy Surface." Materials Science Forum 818 (May 2015): 115–20. http://dx.doi.org/10.4028/www.scientific.net/msf.818.115.

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Contribution deals with evaluation of the electrodeposition process of octacalcium phosphate layer on the surface of Elektron 21 magnesium alloy. The octacalcium phosphate coating (OCP) was electrochemically deposited in a solution containing 0.167 M CaCl2and 0.1 M NH4H2PO4. The formation of calcium phosphate was divided into several stages and described using light microscopy. The influence of octacalcium phosphate layer on the electrochemical characteristics of Elektron 21 magnesium alloy was evaluated by potentiodynamic measurements in 0.1 M NaCl solution at a temperature 22 ± 1°C. Evaluati

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Manolasya, V., Madhavi Gottam Bindhu, D. T. Katyarmal, Alok Sachan, and M. M. Suchitra. "Study of serum markers of bone mineral metabolism in patients with type 2 diabetes mellitus." Journal of Clinical and Scientific Research 14, no. 1 (2025): 39–44. https://doi.org/10.4103/jcsr.jcsr_40_23.

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Abstract Background: Limited published data are available regarding markers of bone mineral metabolism among patients with type 2 diabetes mellitus (T2DM). Methods: In this cross-sectional study conducted in 100 subjects during the period March 2021 to July 2022 we studied the markers of bone mineral metabolism, namely, serum magnesium, calcium, inorganic phosphate and alkaline phosphatase in patients with T2DM (n = 50) and healthy controls (n = 50). Results: Both cases and controls were comparable in terms of age (P = 0.136) and gender (P = 0.68). Serum magnesium (mg/dL) (1.8 ± 0.3 Vs 2.1 ± 0

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Lukina, Yulia, Sergey Kotov, Leonid Bionyshev-Abramov, et al. "Low-Temperature Magnesium Calcium Phosphate Ceramics with Adjustable Resorption Rate." Ceramics 6, no. 1 (2023): 168–94. http://dx.doi.org/10.3390/ceramics6010011.

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Low-temperature ceramics based on magnesium calcium phosphate cement are a promising resorbable material for bone tissue restoration with the possibility of functionalization. The replacement of the magnesium Mg2+ ion with a calcium Ca2+ ion at the stage of preparation of the precursor leads to the production of multiphase ceramics containing phases of brushite, monetite, and newberyite, with different dissolution rates. Multiphase ceramics leads to volumetric resorption with preservation of their geometric shape, which was confirmed by the results of an evaluation of the output of magnesium M

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Lee, Nan Hee, Kyu Hong Hwang, and Jong Kook Lee. "Fabrication of Biphasic Calcium Phosphate Bioceramics from the Recycling of Bone Ash." Advanced Materials Research 610-613 (December 2012): 2328–31. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2328.

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Biphasic calcium phosphate bioceramics were fabricated from the recycling of bone ash which is mostly used as raw materials of bone china. Precursor calcium phosphate powders were prepared by soaking the commercial bone ash in 0.1 M of NaOH solution at 80°C for 4 h. Calcium phosphate powders was obtained by calcination at 800°C for 1 h to completely remove residual organics. Biphasic calcium phosphate bioceramics which is composed of hydroxyapatite and tricalcium phosphate was fabricated by the sintering of pressed compacts at 1200°C for 1 h under moisture protection. The bone ash derived-biph

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Crutchik, D., and J. M. Garrido. "Struvite crystallization versus amorphous magnesium and calcium phosphate precipitation during the treatment of a saline industrial wastewater." Water Science and Technology 64, no. 12 (2011): 2460–67. http://dx.doi.org/10.2166/wst.2011.836.

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Struvite crystallization (MgNH4PO4·6H2O, MAP) could be an alternative for the sustainable and economical recovery of phosphorus from concentrated wastewater streams. Struvite precipitation is recommended for those wastewaters which have high orthophosphate concentration. However the presence of a cheap magnesium source is required in order to make the process feasible. For those wastewater treatment plants (WWTP) located near the seashore magnesium could be economically obtained using seawater. However seawater contains calcium ions that could interfere in the process, by promoting the precipi

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Sakaguchi, Yusuke, Takayuki Hamano, Isao Matsui, et al. "Low magnesium diet aggravates phosphate-induced kidney injury." Nephrology Dialysis Transplantation 34, no. 8 (2018): 1310–19. http://dx.doi.org/10.1093/ndt/gfy358.

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Abstract Background Magnesium is known to protect against phosphate-induced tubular cell injuries in vitro. We investigated in vivo effects of magnesium on kidney injuries and phosphate metabolism in mice exposed to a high phosphate diet. Methods Heminephrectomized mice were maintained on a high phosphate/normal magnesium diet or a high phosphate/low magnesium diet for 6 weeks. We compared renal histology, phosphaturic hormones and renal α-Klotho expression between the two diet groups. Results High phosphate diet–induced tubular injuries and interstitial fibrosis were remarkably aggravated by

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Sevón, Liisi, Merja A. Laine, Sára Karjalainen, et al. "Effect of Age on Flow-Rate, Protein and Electrolyte Composition of Stimulated Whole Saliva in Healthy, Non-Smoking Women." Open Dentistry Journal 2, no. 1 (2008): 89–92. http://dx.doi.org/10.2174/1874210600802010089.

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As relatively little is known about the effect of age on salivary electrolytes we studied the composition of saliva as function of age to provide reference values for healthy non-smoking women. All non-medicated and non-smoking 30-59-year-old subjects (n=255) selected from among 1030 women participating in a screening program formed the material of the present study. Salivary calcium, inorganic phosphate, magnesium, sodium, potassium, protein and flow-rate of stimulated whole saliva were measured. We found age-related changes in salivary calcium and phosphate concentrations (p=0.001 and p=0.00

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