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Journal articles on the topic 'Magnesium/Calcium ion'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Soldatov, V. S., N. V. Vonsovich, and T. A. Korshunova. "Equilibrium of ion exchange of calcium, magnesium and potassium for proton on fibrous carboxylic ion exchanger." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 57, no. 2 (2021): 135–43. http://dx.doi.org/10.29235/1561-8331-2021-57-2-135-143.

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By the method of potentiometric titration of a fibrous aminocarboxylic polyampholyte with a predominant content of carboxyl groups, the equilibrium of the cation exchange of calcium, magnesium, and potassium ions for a hydrogen ion was studied. Due to the low solubility of calcium and magnesium hydroxides in these cases, titration was carried out by Ca(OH)2 and Mg(OH)2, which are formed in solution upon contact with the H-form of the ion exchanger оf increasing portions of solid CaO and MgO. This made it possible to obtain titration curves in a wide range of pH and calcium and magnesium chlori

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2

Meekangwal, Suthida, and Falan Srisuriyachai. "Effects of Formation Brine Compositions on Effectiveness of Low Salinity Brine Injection in Carbonate Reservoir." MATEC Web of Conferences 171 (2018): 04002. http://dx.doi.org/10.1051/matecconf/201817104002.

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Nowadays, Low Salinity Waterflooding (LSWF) is considered as one of the most effective techniques to enhance oil recovery. Essential mechanism is a Multi-Ion Exchange (MIE). In carbonate formation, collaboration of Potential Determining Ions (PDI) with rock surface and crude oil results in adjustment of surface equilibrium. These ions in injected brine are thoroughly investigated but effects from formation brine are not well documented. In this study, ratio of divalent ions including calcium and magnesium ions in formation brine is studied. Results from imbibition test shows that formation bri

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3

Wojtal-Frankiewicz, Adrianna, and Piotr Frankiewicz. "The Influence of the Zebra Mussel (Dreisena Polymorhpa) on Magnesium and Calcium Concentration in Water." Folia Biologica et Oecologica 6 (December 4, 2010): 81–101. http://dx.doi.org/10.2478/v10107-009-0009-y.

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In this study we examined changes in magnesium and calcium ion concentrations depending on Zebra Mussel biomass, pH values and temperature. We performed field experiments in years with different weather conditions using twelve 200 litre polycarbonate containers filled with 150 litres of non-filtered water from lowland, eutrophic reservoirs. Three treatments of the experiment were represented by: Phyto control with non-filtered water, Phyto+Dreis A with Zebra Mussel biomass of 500 g/m2, and Phyto+Dreis B with Zebra Mussel biomass of 1.000 g/m2. Magnesium and calcium ions concentrations were ana

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Peregudov, Yuriy S., Sabukhi I. Niftaliev, Anna V. Timkova, Larisa P. Bondareva, and Aleksey V. Astapov. "CHANGE IN THERMODYNAMIC CHARACTERISTICS OF HYDRATION OF CARBOXYL FIBER SORBENT IN EXCHANGE OF MAGNESIUM AND CALCIUM CATION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 4 (2020): 42–48. http://dx.doi.org/10.6060/ivkkt.20206304.6122.

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The relationship between the characteristics of hydration and the selectivity of the fibrous carboxyl sorbent is established. Using the isopiestic method and thermal analysis, the hydration of the carboxyl fiber ion exchanger VION KN-1 in sodium, calcium and magnesium forms was studied. The quantity of absorbed water was determined, including the ratio of kinetically unequal water in the sorbent phase. The amount of water absorbed form of magnesium ion exchanger is greater than calcium, the molar proportion of water distribution varying in the degree of hydration of the magnesium and calcium f

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5

Zhang, Zhihao, Yun Jia, and Judong Zhao. "Effect of Magnesium Ion Concentration on the Scale Inhibition of Heat Exchanger in Circulating Cooling Water under Alternating Electric Field." Applied Sciences 10, no. 16 (2020): 5491. http://dx.doi.org/10.3390/app10165491.

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This work investigated the effect of magnesium ion concentration on the formation of mineral scale in circulating cooling water under alternating electric field treatment (AEFT) by using a self-made power plant circulating cooling water simulator. In this experiment, the circulating cooling water used was artificial hard water. Three experimental groups with different magnesium ion concentrations and three corresponding control groups were studied. Scale inhibition rate, fouling resistance, calcium ion concentration, crystal phase, and crystal morphology were discussed. Results showed that 4 m

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6

Wilson, H. D., H. P. Schedl, and K. Christensen. "Calcium uptake by brush-border membrane vesicles from the rat intestine." American Journal of Physiology-Renal Physiology 257, no. 3 (1989): F446—F453. http://dx.doi.org/10.1152/ajprenal.1989.257.3.f446.

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Uptake of calcium by brush-border membrane vesicles from rat small intestine is composed of saturable and nonsaturable components. We studied regulation of calcium uptake using the divalent cations strontium, a foreign ion that mimics calcium biologically and magnesium, a physiologically important ion that resembles calcium physically, although not biologically. Strontium present outside the vesicle inhibited saturable calcium uptake competitively, consistent with binding to the transporter at the same site as calcium. Strontium inside the vesicle accelerated saturable calcium uptake from the

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7

Hadiko, Gunawan, Yong Sheng Han, Masayoshi Fuji, and Minoru Takahashi. "Effect of Magnesium Ion on the Precipitation of Hollow Calcium Carbonate by Bubble Templating Method." Key Engineering Materials 317-318 (August 2006): 65–68. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.65.

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Hollow calcium carbonate (CaCO3) particles were synthesized by bubbling CO2 in the solution of calcium chloride (CaCl2) with the presence of ammonia at room temperature. In this method, CO2 bubble, besides as reactant, has an important role as a template for forming hollow particles. The precipitation was carried out by controlling the precipitation condition, such as pH, flow rate and additives. Hollow calcium carbonate particles were precipitated with the major crystal phase of vaterite. An interesting finding is that magnesium ion (Mg2+) can suppress the transformation of vaterite to calcit

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8

Shevchuk, V. V., T. N. Potkina, A. I. Vaitenka, and O. V. Smetanina. "Obtaining artificial carnallites from magnesium chloride brines." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 56, no. 2 (2020): 229–34. http://dx.doi.org/10.29235/1561-8331-2020-56-2-229-234.

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The excess of magnesium chloride brines is formed during the polymineral ores processing in order to obtain potassium sulfate. One way to regenerate such brines is to produce artificial carnallite. It is necessary to purify these brines from sulfates for their further use as raw materials for the artificial carnallite production. In this work, the process of desulfurization of magnesium chloride brines with a solution of calcium chloride is studied. The temperature and the processing time, the magnesium chloride solutions concentration and the consumption of desulfurizing agent (calcium chlori

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9

Simkiss, K., and M. G. Taylor. "Calcium magnesium phosphate granules: atomistic simulations explaining cell death." Journal of Experimental Biology 190, no. 1 (1994): 131–39. http://dx.doi.org/10.1242/jeb.190.1.131.

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1. A large number of invertebrates have cells that produce intracellular granules of amorphous calcium magnesium phosphates that are thought to act as ion stores or sites of metal detoxification. 2. The interatomic potentials and force constants have been calculated for these ions, and computer simulations of the crystal lattices have been used to determine the effects of ion substitutions on these lattice energies. 3. The results provide insights into the mechanisms of granule formation and the effects of ion substitutions on cell physiology.

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10

Wang, Yubin, Xinyu Mao, Wei Xiao, and Wangbo Wang. "The Influence Mechanism of Magnesium Ions on the Morphology and Crystal Structure of Magnetized Anti-Scaling Products." Minerals 10, no. 11 (2020): 997. http://dx.doi.org/10.3390/min10110997.

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Magnetization technology has been widely used in various transportation pipeline anti-scaling and descaling processes due to its simple equipment, low operating cost and low secondary pollution. To resolve structural pipeline issues in concentrations, the effects of magnesium salt concentration on conductivity, pH value and calcium ion concentration of a magnetized calcium chloride sodium bicarbonate mixed solution were studied. The results indicated that 4.0% MgSO4 had the greatest anti-scaling effect under dynamic water conditions, which increased the calcium concentration of the mixed solut

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11

Koseki, Masamichi, Iwao Takahashi, Tetsuko Yasuno, Shuzo Ogino, Yuko Tsuda, and Masayoshi Kazama. "Determination of Organic Acids in the Presence of Metal Ion." Journal of AOAC INTERNATIONAL 72, no. 5 (1989): 775–76. http://dx.doi.org/10.1093/jaoac/72.5.775.

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Abstract The recovery of organic acids: citric, tartaric, fumaric, succinic, and malic, was examined by liquid chromatography in the presence of calcium, magnesium, or aluminum ions. Calcium and magnesium ions, i.e., ions of valence +2, did not interfere in determinations of the organic acids examined here. These organic acids could be determined without interference from aluminum ion by pH adjustment of the solutions to pH 2.

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12

Yu, Lan Lan, Bao Hui Wang, and Xiao Yan Guan. "Scaling Factors of ASP Flooding in Oilfield." Advanced Materials Research 396-398 (November 2011): 1959–62. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1959.

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According to the experimental conditions of ASP scene, the indoor simulation experiments were designed to measure the equilibrium concentrations of soluble silicon ion, calcium and magnesium ions under different conditions, then to determine the main scaling influence factors of ASP flooding. The results showed that silicon ion scale was seriously affected by pH value and temperature in a single silicon ion system. Under the polyacrylamide and surfactant single role, the influence to scale was not obvious, and with the higher concentrations of polyacrylamide, surfactant, calcium and magnesium

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13

Burger, K., M. Véber, P. Sipos, et al. "Calcium, magnesium and zinc ion coordination equilibria of vincristine." Inorganica Chimica Acta 124, no. 4 (1986): 175–79. http://dx.doi.org/10.1016/s0020-1693(00)83288-0.

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14

Riley, Julie M., Hyunjin Kim, Timothy D. Averch, and Hyung J. Kim. "Effect of Magnesium on Calcium and Oxalate Ion Binding." Journal of Endourology 27, no. 12 (2013): 1487–92. http://dx.doi.org/10.1089/end.2013.0173.

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15

Poz, I. L., and A. G. Strokov. "Acid ion modification in a dialysis fluid." Russian Journal of Transplantology and Artificial Organs 21, no. 4 (2020): 129–33. http://dx.doi.org/10.15825/1995-1191-2019-4-129-133.

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Apart from its main electrolytes – sodium, potassium, calcium and magnesium – a dialysis fluid (DF) contains a buffer for correction of acidosis. A small amount of acid is added to the DF to prevent calcium and magnesium precipitation. Acetic acid has traditionally been used for this purpose. Several studies have shown that acetate ion, even in small concentrations, can cause a number of adverse events, such as low blood pressure, production of proinflammatory cytokines, etc. This literature review aims at considering alternative acidic components of DF, such as citric, hydrochloric, and succi

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16

Yasukawa, Akemi, Takashi Yokoyama, Kazuhiko Kandori, and Tatsuo Ishikawa. "Ion-exchange of magnesium–calcium hydroxyapatite solid solution particles with Cd2+ ion." Colloids and Surfaces A: Physicochemical and Engineering Aspects 317, no. 1-3 (2008): 123–28. http://dx.doi.org/10.1016/j.colsurfa.2007.10.020.

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17

Sousa, Alexandre de Andrade, José Maria Porcaro Salles, João Marcos Arantes Soares, Gustavo Meyer de Moraes, Jomar Rezende Carvalho, and Paulo Roberto Savassi-Rocha. "Evolution of blood magnesium and phosphorus ion levels following thyroidectomy and correlation with total calcium values." Sao Paulo Medical Journal 128, no. 5 (2010): 268–71. http://dx.doi.org/10.1590/s1516-31802010000500005.

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CONTEXT AND OBJECTIVE: Magnesium ion concentration is directly related and phosphorus ion concentration is inversely related to calcemia. The aim of this study was to evaluate the evolution of magnesium and phosphorus ion levels in patients undergoing thyroidectomy and correlate these with changes to calcium concentration. DESIGN AND SETTING: Prospective study at the Alpha Institute of Gastroenterology, Hospital das Clínicas, Universidade Federal de Minas Gerais. METHODS: The study included 333 patients, of both genders and mean age 45 ± 15 years, who underwent thyroidectomy between 2000 and 2

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18

Ellison, David H. "Divalent cation transport by the distal nephron: insights from Bartter's and Gitelman's syndromes." American Journal of Physiology-Renal Physiology 279, no. 4 (2000): F616—F625. http://dx.doi.org/10.1152/ajprenal.2000.279.4.f616.

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Elucidation of the gene defects responsible for many disorders of renal fluid and electrolyte homeostasis has provided new insights into normal and abnormal physiology. Identifying the causes of Gitelman's and Bartter's syndromes has greatly enhanced our understanding of ion transport by thick ascending limb and distal convoluted tubule cells. Despite this information, several phenotypic features of these diseases remain confusing, even in the face of molecular insight. Paramount among these are disorders of divalent cation homeostasis. Bartter's syndrome is caused by dysfunction of thick asce

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19

Chandra, S., E. P. Kable, G. H. Morrison, and W. W. Webb. "Calcium sequestration in the Golgi apparatus of cultured mammalian cells revealed by laser scanning confocal microscopy and ion microscopy." Journal of Cell Science 100, no. 4 (1991): 747–52. http://dx.doi.org/10.1242/jcs.100.4.747.

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Co-localization of the elements calcium, potassium, sodium and magnesium with sequestering organelles has been achieved by application of two microscopy techniques on the same cell. Organelles were first localized by laser scanning confocal microscopy (LSCFM) using fluorescent organelle stains. The same cells were then analyzed for elemental distribution with ion microscopy. This approach has identified a perinuclear region of prominent total calcium concentration with the Golgi apparatus. Live cells were fluorescently stained with C6-NBD-ceramide for labeling the Golgi apparatus prior to cryo

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20

Cetin, Gulten. "Removal of Hardness of Earth Alkaline Metals from Aqueous Solutions by Ion Exchange Method." ISRN Analytical Chemistry 2014 (February 23, 2014): 1–7. http://dx.doi.org/10.1155/2014/621794.

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An ion exchange process was introduced as an approach for softening of artificial hard water solutions. A strong acid cation exchange resin, Amberlite IR 120 [Na+], was used to reduce the hardness of water with the matrix of styrene-divinylbenzene copolymer having functional group as sulfonate. The ion exchange behavior of the ions of calcium and magnesium in synthetic solutions of hard water was investigated with the variables depending on pH, stirrer speed of the solutions and amount of the resin as a function of contact time between resin phase and hard water solution. The maximum ion excha

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21

Wang, Jian, and Yi Fan Zhang. "The Study of Divalent Metal Ion Catalysts on Phenol-Formaldehyde Resol Resins." Applied Mechanics and Materials 71-78 (July 2011): 818–21. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.818.

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The curing characteristic of phenol-formaldehyde resol resins catalyzed with magnesium hydroxide, calcium hydroxide and barium hydroxide was studied in this study.The effects of catalysts on chemical structure of phenol formaldehyde resin was investigated by fourier transform infrared.The results indicated that divalent metal ions catalysts played an important role influence both the cure rate and cure time.Phenol formaldehyde resin catalysed by diffierent catalysts showed diffierent addition of formaldehyde onto ortho positions of phenolic rings.The order of the divalent metal ions effectiven

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22

Véber, M., P. Sipos, and K. Burger. "Zinc, calcium and magnesium ion coordination of vinblastine and vindoline." Inorganica Chimica Acta 156, no. 1 (1989): 145–48. http://dx.doi.org/10.1016/s0020-1693(00)90380-3.

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23

Hewavitharana, Amitha K., and Byron Kratochvil. "An ion-exchange/atomic absorption method for the measurement of ionized calcium and magnesium at micromolar concentrations." Canadian Journal of Chemistry 71, no. 1 (1993): 17–20. http://dx.doi.org/10.1139/v93-002.

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A quantitative ion-exchange/atomic absorption method is described for measuring the concentration of free (hydrated) calcium and magnesium in solution at micromolar levels. Sample solutions are pumped through a micro-column of strong acid-type cation-exchange resin until equilibrium has been achieved between resin and solution. After removal of interstitial solution by first air, then water, the sorbed metal ion is eluted from the resin with nitric acid directly into an atomic absorption spectrophotometer. In a 0.1 M 1:1 electrolyte, here KNO3, the amount of metal ion sorbed on the resin is di

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24

Zhang, Ding Yong, Guo Shun Qin, Tao Ma, Wei Li, Long Jiang Guo, and Zhao Min Li. "Experimental Study on Evaluation of Scale Inhibitor for Xian-He." Advanced Materials Research 955-959 (June 2014): 597–600. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.597.

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The performance of Xian-He scale inhibitor was evaluated by experiment study with the method of scaling ion balance. The results imply that both of the scale inhibitor show good antiscale performance. The amount of calcium and magnesium ions decreased obviously and the scaling reduces. When the scale inhibitor NO.1 was added into the sample by 9ml/L, calcium and magnesium ions content was high and basically remained unchanged. The best dosage of the scale inhibitor NO.2 is 12mL/L. As the temperature rise, the amount of calcium and magnesium ions is declining. With the same dosage, the amount o

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25

Kachapur, Chandrashekar, Seetaram N. Kallimani, Gayathri B.H, Ishwar S. Hasabi, and Zahura M. Devarhoru. "A Study of Serum Calcium and Magnesium Levels in Idiopathic Epilepsy Patients of Hubli, Karnataka, India." Journal of Evidence Based Medicine and Healthcare 8, no. 25 (2021): 2187–91. http://dx.doi.org/10.18410/jebmh/2021/409.

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BACKGROUND Magnesium is a potential modulator of seizure activity because of its ability to antagonize the excitatory calcium influx through N-methyl-D-aspartate (NMDA) receptor which is thought to play a role in many human forms of epilepsy. When the extracellular concentration of calcium ion falls below normal, the nervous system becomes more excitable, allowing easy initiation of action potentials. Consequently, hypocalcaemia causes seizures because of its action of increasing excitability in the brain. We wanted to estimate the serum concentration of calcium and magnesium in idiopathic epi

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26

Rehak, Nadja N., Stacey A. Cecco, Julie E. Niemela, and Ronald J. Elin. "Thiocyanate in smokers interferes with the Nova magnesium ion-selective electrode." Clinical Chemistry 43, no. 9 (1997): 1595–600. http://dx.doi.org/10.1093/clinchem/43.9.1595.

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Abstract Thiocyanate found in serum ordinarily is the metabolite of cyanide that is inhaled with tobacco smoke and ingested with cyanogenic foods. We investigated the effect of the thiocyanate ion (SCN−) on the ionized magnesium (iMg) and ionized calcium (iCa) results determined with the AVL and Nova magnesium and calcium ion-selective electrodes (ISEs). We analyzed saline and pooled serum with added SCN−, and serum from apparently healthy nonsmokers (n = 20) and smokers (n = 20). The mean (and range) of the measured serum SCN− concentration was 0.019 (0.008–0.046) mmol/L for nonsmokers and 0.

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27

Kondoh, A., and T. Oi. "Interaction of Alkaline Earth Metal Ions with Acetic and Lactic Acid in Aqueous Solutions Studied by 13C NMR Spectroscopy." Zeitschrift für Naturforschung A 52, no. 4 (1997): 351–57. http://dx.doi.org/10.1515/zna-1997-0410.

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Abstract Interaction of alkaline earth metal (magnesium, calcium, strontium and barium) ions with acetic and lactic acid in aqueous media was investigated by 13C NMR spectroscopy. In the acetate systems, signals whose chemical shifts were the averages of those of the free and bound acetate ions were observed. Downfield shifts of the carboxylate carbon signals with increasing metal ion concentration indicated that the acetate ion acted as a monodentate ligand coordinating to the metal ion using the carboxylate group. The metal ion concentration dependence of the peak positions of the methine an

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28

Li, Yan, Brett Paull, Marius N. Müller, and Pavel N. Nesterenko. "Determination of trace magnesium and strontium in calcium carbonate and calcareous skeletons of marine planktonic organisms using high performance chelation ion chromatography." Analytical Methods 7, no. 2 (2015): 416–22. http://dx.doi.org/10.1039/c4ay02126f.

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29

Cofie, O. O., and J. Pleysier. "Ion Exchange Involving Potassium–Calcium and Magnesium–Calcium in Soil and Organic Matter Fractions." Communications in Soil Science and Plant Analysis 35, no. 17-18 (2005): 2417–31. http://dx.doi.org/10.1081/lcss-200030322.

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30

Magnabosco, Giulia, Andrea M. M. Condorelli, Rose Rosenberg, et al. "Non-stoichiometric hydrated magnesium-doped calcium carbonate precipitation in ethanol." Chemical Communications 55, no. 86 (2019): 12944–47. http://dx.doi.org/10.1039/c9cc07087g.

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Alam, Md Khairul, Noorzahan Begum, and Shelina Begum. "Relationship of serum ionized calcium and magnesium concentration with parasympathetic nerve Function in type 2 diabetes mellitus." Journal of Bangladesh Society of Physiologist 11, no. 2 (2016): 70–73. http://dx.doi.org/10.3329/jbsp.v11i2.30654.

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Background: Changes in serum Ca2+ and Mg2+ level may have some relationship to the occurrence of autonomic neuropathy in diabetes.Objective: To observe relationship between parasympathetic nerve function and serum ionized calcium & magnesium in type 2 diabetes mellitus (T2DM).Methods: This cross sectional study was carried out in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka on 47 T2DM patients aged 40-68 years of both sexes. Twenty five patients were recently diagnosed diabetics (RDM) and 22 were long term diabetics (LDM) with 10-20 years duratio

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32

Schlegel, Hedda, Robert G. Amundson, and Aloys Hüttermann. "Element distribution in red spruce (Picearubens) fine roots; evidence for aluminium toxicity at Whiteface Mountain." Canadian Journal of Forest Research 22, no. 8 (1992): 1132–38. http://dx.doi.org/10.1139/x92-150.

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To determine the element distribution in fine roots of red spruce (Picearubens Sarg.) at a high-elevation decline site on Whiteface Mountain, New York, fine-root samples were collected and analysed by X-ray microanalysis. Aluminium was found in very high concentrations in the root cortex, but could not be detected in stelar tissues. In contrast, magnesium was found only in the central cylinder in low amounts. The calcium concentration in the cortex was low, but was higher in the stele. Aluminium has been shown to interfere with cation uptake by blocking exchange sites in the cortical apoplast.

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Chandra, Subhash. "Imaging transported and endogenous calcium independently at a subcellular resolution: ion microscopy imaging of calcium stable isotopes." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1604–5. http://dx.doi.org/10.1017/s0424820100132650.

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Ion microscopy, based on secondary ion mass spectrometry (SIMS), is a unique isotopic imaging technique. The use of stable isotopes as tracers and their SIMS localization at a subcellular resolution has introduced a significant new approach for molecular localization and ion transport studies. A molecule of interest may be tagged with stable 2H, 13C, 15N, etc. and imaged with SIMS for its intracellular location. Stable isotopes of physiologically important elements such as calcium and magnesium provide excellent tracers for ion transport imaging studies with SIMS. in a recent study with 44Ca,

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Wetzel, Roland, Leena Hupa, and Delia S. Brauer. "Glass ionomer bone cements based on magnesium-containing bioactive glasses." Biomedical Glasses 5, no. 1 (2019): 1–12. http://dx.doi.org/10.1515/bglass-2019-0001.

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Abstract Glass ionomer cements (GIC) are used in restorative dentistry and their properties (low heat during setting, adhesion to mineralised tissue and surgical metals) make them of great interest for bone applications.However, dental GIC are based on aluminium-containing glasses, and the resulting release of aluminium ions from the cements needs to be avoided for applications as bone cements. Replacing aluminium ions in glasses for use in glass ionomer cements is challenging, as aluminium ions play a critical role in the required glass degradation by acid attack as well as in GIC mechanical

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35

FAN, Bo, Long-sheng ZHAO, Zong-yu FENG, et al. "Leaching behaviors of calcium and magnesium in ion-adsorption rare earth tailings with magnesium sulfate." Transactions of Nonferrous Metals Society of China 31, no. 1 (2021): 288–96. http://dx.doi.org/10.1016/s1003-6326(21)65495-x.

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36

Doughty, Michael J. "Effects of ionophore A23187 on ciliary activity of Paramecium caudatum." Canadian Journal of Microbiology 34, no. 2 (1988): 169–79. http://dx.doi.org/10.1139/m88-032.

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The ciliated protozoan Paramecium caudatum (suspended in buffered solutions of pH 4.5–9.5) was treated with the ionophore A23187. With calcium and sodium as the only added extracellular cations, A23187 stopped ciliary motion and immobilized the cells. The rate of immobilization increased as a function of A23187 concentration (0.5–16 μg/mL) and extracellular calcium concentration (0.016–4 mM), but decreased as a function of increasing extracellular pH. The rate of immobilization was markedly sensitive to the extracellular calcium ion concentration at alkaline pH, but showed only slight calcium

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37

Arul, K. Thanigai, J. Ramana Ramya, S. C. Vanithakumari, et al. "Novel ultraviolet emitting low energy nitrogen ion implanted magnesium ion incorporated nanocrystalline calcium phosphate." Materials Letters 153 (August 2015): 182–85. http://dx.doi.org/10.1016/j.matlet.2015.04.017.

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38

Resnick, L. M. "Cellular ions in hypertension, insulin resistance, obesity, and diabetes: a unifying theme." Journal of the American Society of Nephrology 3, no. 4 (1992): S78. http://dx.doi.org/10.1681/asn.v34s78.

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The clinical linkage of hypertensive cardiovascular disease, left ventricular hypertrophy, and accelerated atherosclerosis with a spectrum of metabolic disturbances including peripheral insulin resistance, hyperinsulinemia, obesity, and frank non-insulin dependent diabetes mellitus, has been increasingly appreciated. However, the underlying biologic basis mediating this clinical association remains unclear. Nuclear magnetic resonance techniques have been used to measure various intracellular ion species in human erythrocytes and have found that common, shared intracellular abnormalities of cyt

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Vandeginste, Veerle. "Effect of pH Cycling and Zinc Ions on Calcium and Magnesium Carbonate Formation in Saline Fluids at Low Temperature." Minerals 11, no. 7 (2021): 723. http://dx.doi.org/10.3390/min11070723.

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The formation of dolomite is very challenging in the laboratory under ambient conditions due to kinetic inhibition. The goal of this study was to test the impact of pH cycling and zinc ions on the formation of magnesium-rich carbonates in saline fluids at a low temperature. Batch reactor experiments were conducted in two series of pH cycling experiments, one without and one with zinc ions, at 43 °C. The results after 36 diel pH cycles indicate a reaction product assemblage of hydromagnesite, aragonite and magnesite in the experiments without zinc ions, and of magnesite and minor aragonite in t

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Yin, Li-Hui, Xu-Ping Liu, Lu-Yao Yi, Jin Wang, Ya-Jun Zhang, and Yu-Fei Feng. "Structural characterization of calcium glycinate, magnesium glycinate and zinc glycinate." Journal of Innovative Optical Health Sciences 10, no. 03 (2017): 1650052. http://dx.doi.org/10.1142/s1793545816500528.

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Metal glycinate chelates are formed by glycine and metal compounds through chemical reactions. Calcium glycinate, magnesium glycinate and zinc glycinate are kinds of new-type and ideal nutrient supplements, which have satisfactory physico-chemical properties and bioactivities. They are important for prophylaxis and treat metal deficiency. The structural characterization shows that the metal ion is bonded to the amino and carboxyl group to form two five-membered rings. This paper mainly studies the structure characterization of the metal chelated glycinates by their solubility, infrared spectru

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Fieber, Lynne A., and Peter L. Lutz. "Magnesium and calcium metabolism during molting in the freshwater prawn Macrobrachium rosenbergii." Canadian Journal of Zoology 63, no. 5 (1985): 1120–24. http://dx.doi.org/10.1139/z85-169.

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Magnesium and calcium concentrations were recorded in the extracellular fluid, exoskeleton, and hepatopancreas of the Malaysian freshwater prawn Macrobrachium rosenbergii throughout the molting cycle. Sixty male prawns distributed among five molt states (intermolt (C), early premolt [Formula: see text], late premolt [Formula: see text], early postmolt (A), and late postmolt (B)) were dissected for analysis of body components. Magnesium concentration in the whole bodies of 14 prawns was established. Magnesium levels in the extracellular fluid, exoskeleton, and hepatopancreas increased over the

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Serudji, Joserizal, Helga Helga, and Hafni Bachtiar. "PERBEDAAN RERATA RASIO KALSIUM MAGNESIUM DAN RERATA RASIO NATRIUM KALIUM SERUM." JOURNAL OBGIN EMAS 1, no. 1 (2019): 22–29. http://dx.doi.org/10.25077/aoj.1.1.22-29.2017.

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The high incidence of preeclampsia and eclampsia causes the importance of early detection especially eclampsia which is the main cause of maternal morbidity and mortality and bad perinatal outcome. The etiology was unknown, but is related to changes in electrolyte status. Electrolytes such as calcium (Ca2+), Magnesium (Mg2+), sodium (Na+) and potassium (K+) play an important role in pre-eclampsia and eclampsia because they contribute significantly in vascular smooth muscle function. This study was done to analyze the differences in mean levels of calcium magnesium ratio and sodium potassium ra

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Hamedani, A. Ansari, F. Moztarzadeh, D. Bizari, M. Ashuri, and M. Tahriri. "Ion Release Behavior and Apatite-Forming Ability of Sol-Gel Derived 70S30C Bioactive Glass with Magnesium/Zinc Substitution." Key Engineering Materials 493-494 (October 2011): 55–60. http://dx.doi.org/10.4028/www.scientific.net/kem.493-494.55.

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Bioactive glasses not only can bond to hard tissues of the body, are also able to release ions that have stimulatory effects on cells and so are regarded as promising candidate materials for gene activating purposes in tissue engineering applications. In this research the effect of co-substitution of Magnesium and Zinc for Calcium on bioactivity of binary sol-gel derived glass 70S30C (70 mol. % SiO2, 30 mol. % CaO) was investigated. Calcium phosphates forming ability tests and investigation of glass degradation products in simulated body fluid (SBF) were performed as follows.After sol-gel synt

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LIANG, H., Y. HUANG, F. HE, H. F. DING, and Y. Z. WAN. "ENHANCED CALCIUM PHOSPHATE PRECIPITATION ON THE SURFACE OF Mg-ION-IMPLANTED ZrO2 BIOCERAMIC." Surface Review and Letters 14, no. 01 (2007): 71–77. http://dx.doi.org/10.1142/s0218625x07009086.

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Modification of bioceramics by ion implantation of magnesium ( Mg ) is of interest as Mg is the fourth abundant cation in the human body. In this work, magnesium was ion-implanted into a ZrO 2 based bioceramic stabilized with Y 2 O 3 and Al 2 O 3. Both Mg -implanted and unimplanted samples were soaked in a simulated body fluid (SBF) for a period of time. The deposits on the surface of various samples were characterized with scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). We find that the Mg -implanted ZrO 2 shows better bioactivi

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PARK, M.-Y., K.-H. LEE, Y.-H. UMN, et al. "CERAMIC ION-SELECTRODES OF TITANIUM DIOXIDE, MAGNESIUM, CALCIUM AND STRONTIUM TITANATE." Analytical Sciences 7, Supple (1991): 627–30. http://dx.doi.org/10.2116/analsci.7.supple_627.

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Maj-Zurawska, Magdalena, Marizel Rouilly, Werner E. Morf, and Wilhelm Simon. "Determination of magnesium and calcium in water with ion-selective electrodes." Analytica Chimica Acta 218 (1989): 47–59. http://dx.doi.org/10.1016/s0003-2670(00)80281-0.

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Zhu, Jingwei, Yu Qin, and Yunhong Zhang. "Magnesium-Selective Ion-Channel Mimetic Sensor with a Traditional Calcium Ionophore." Analytical Chemistry 82, no. 1 (2010): 436–40. http://dx.doi.org/10.1021/ac901570u.

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Yasukawa, Akemi, Takashi Yokoyama, Kazuhiko Kandori, and Tatsuo Ishikawa. "Ion-exchange property and mechanism of magnesium–calcium hydroxyapatite solid solutions." Colloids and Surfaces A: Physicochemical and Engineering Aspects 238, no. 1-3 (2004): 133–39. http://dx.doi.org/10.1016/j.colsurfa.2004.03.001.

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Yue, Guan Hua, Li Min Shang, Li Ping Wang, and Li Li Feng. "The Influences of Main Ingredients of the Reclaimed Water on Calcium Carbonate Scale in Recycling Cooling System." Advanced Materials Research 393-395 (November 2011): 1554–57. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1554.

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The main risk of reclaimed water reused in industry is to control fouling. The main ingredients in reclaimed water form the chemical scale which is one of the main components of the fouling in the recycling cooling system. The main chemical scale of reclaimed water is carbonate scale (calcite). In this paper, by using the actual reclaimed water which reused as make-up water in Beijing Thermal Power Plant to simulate the 4 times concentrate ratio recycling water to study the influence of main ingredients of reclaimed water such as pH，soluble silica, the most content of anions and cations on car

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Fedoruk, N. A., and I. V. Galitskaya. "ANALYSIS OF POLLUTING COMPONENTS IN THE LIQUID PHASE OF SNOW ON THE TERRITORY OF THE RIGHT BANK OF DUBNA IN 2020." Bulletin of Dubna International University for Nature, Society, and Man. Series: Natural and engineering sciences, no. 2 (47) (September 14, 2020): 44–50. http://dx.doi.org/10.37005/1818-0744-2020-2-44-50.

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This work is devoted to the analysis of the components of the liquid phase of freshly fallen snow in February 2020 in the city of Dubna. According to a laboratory analysis of melt snow water, pH, total hardness, suspended solids, calcium, magnesium, lead, zinc, copper, cadmium, nickel, phosphate ion, nitrite ion, ammonium ion were revealed at 9 points of the study.

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