Bibliografías temáticas / Magnesian

Literatura académica sobre el tema "Magnesian"

Autor: Grafiati
Publicado: 13 de abril de 2024

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Artículos de revistas sobre el tema "Magnesian"

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Smirnov, Andrei N., Igor A. Grishin y Aleksei V. Masalimov. "Characterizing magnesite heavy-media separation screenings as promising technogenic raw materials". Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (30 de marzo de 2021): 88–93. http://dx.doi.org/10.21440/0536-1028-2021-2-88-93.

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Introduction. This article discusses the possibility of using technogenic raw materials for the production of magnesia and magnesium oxide. The analysis of domestic industry supply with magnesite and magnesian raw materials is presented. Man-made minerals, such as magnesite screenings, produced in the course of heavy-media separation of ore, are noted to be a promising source of this type of raw material. It has been established that this type of raw material is poorly studied. Research methodology. The applied research methods were substantiated to establish the amount and form of magnesium oxide in the magnesite screenings of the Satka deposit. Results and discussion. A significant amount of both current and accumulated screenings at the site in Satka and their chemical composition allow us to consider them as a promising technogenic raw material for magnesium oxide production. The work has determined the distribution of magnesium oxide by size classes. On the basis of elemental analysis, it was decided to recognize the object under study as a suitable mineral for processing. The thermogravimetric analysis of magnesite screenings made it possible to establish the forms of magnesium oxide in the material. Conclusions. Analysis of the results obtained allows us to assert the possibility of processing the studied technogenic raw materials, but the presence of magnesium oxide in the composition of solid solutions with calcium carbonate predetermines the use of chemical enrichment methods.
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Shapovalov, A. N., E. V. Ovchinnikova y V. B. Gorbunov. "Use of magnesian fluxes of the Khalilovo deposit in sinter production". Izvestiya. Ferrous Metallurgy 62, n.º 7 (22 de agosto de 2019): 548–56. http://dx.doi.org/10.17073/0368-0797-2019-7-548-556.

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The article describes the magnesian fluxes properties of the Khalilovo deposit with different proportions of magnesite and serpentine. The results of laboratory experiments on the effect of these fluxes with various magnesite contents on the parameters of sintering process of the Kursk magnetic anomaly ores at JSC “Ural Steel” are presented. The use of experimental magnesian fluxes of the Khalilovo deposit increases the sinter strength, yield and sinter productivity. With the use of experimental fluxes instead of Bakal siderite, an increase in the sinter yield of 3 – 5 % (rel.) can be reached. In addition, the sinter productivity increases from 1.04 to 1.08 – 1.15 t/(m2·h), that is, by 4 – 10 % (rel.). The use of experimental magnesian fluxes increases the sinter strength: the tumbler index (+5 mm) increases by an average of 4 – 6 % (abs.), and the abrasion index (–0.5 mm) decreases by 0.6 – 0.8 % (abs.). Improving the strength characteristics of the sinter using magnesian fluxes of the Khalilovo deposit is due to the formation of “reinforcing” ferritic binder, as well as due to homogenization of the solidifying melt and its crystallization in the form of glass phase of the rankinite composition, which together limit the formation of β-Ca2SiO4 . The results of experimental sintering have confirmed the possibility of using experimental fluxes in the sintering production at sinter plant of JSC “Ural Steel” without changing the production technology. The rational variant for JSC “Ural Steel” is 50 % of magnesite of Khalilovo deposit in sinter rawmix. Replacement of the Bakal siderite in the production of sinter with 2 % of MgO on the magnesian flux of the Khalilovo deposit with 50 % of magnesite provides an increase in yield by 4 – 5 %, an increase in sinter strength by 5 – 6 % and an increase in sinter productivity by 8 – 10 % while keeping the iron content at the level of the “base” period.
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Buckley, H. A. y A. R. Woolley. "Carbonates of the magnesite–siderite series from four carbonatite complexes". Mineralogical Magazine 54, n.º 376 (septiembre de 1990): 413–18. http://dx.doi.org/10.1180/minmag.1990.054.376.06.

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AbstractCarbonates of the magnesite-siderite series have been found and analysed in carbonatites from the Lueshe, Newania, Kangankunde, and Chipman Lake complexes. This series has been represented until now only by a few X-ray identifications of magnesite and three published analyses of siderite and breunnerite (magnesian siderite). Most of the siderite identified in carbonatites in the past has proved to be ankerite, but the new data define the complete solid-solution series from magnesite to siderite. They occur together with dolomite and ankerite and in one rock with calcite. The magnesites, ferroan magnesites and some magnesian siderites may be metasomatic/hydrothermal in origin but magnesian siderite from Chipman Lake appears to have crystallized in the two-phase calcite + siderite field in the subsolidus CaCO3-MgCO3-FeCO3 system. Textural evidence in Newania carbonatites indicates that ferroan magnesite, which co-exists with ankerite, is a primary liquidus phase and it is proposed that the Newania carbonatite evolved directly from a Ca-poor, Mg-rich carbonatitic liquid generated by partial melting of phlogopite-carbonate peridotite in the mantle at pressures >32 kbar.
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4

Gržeta, B., D. Medaković y S. Popović. "New Method for Estimation of the Magnesium Fraction in Magnesian Calcite". Materials Science Forum 443-444 (enero de 2004): 55–58. http://dx.doi.org/10.4028/www.scientific.net/msf.443-444.55.

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A new method for estimation of the magnesium fraction in magnesian calcite is described. It involves measuring the XRD pattern of magnesian calcite in a narrow 20 range and individual profile fitting of diffraction lines 113 and 202. The intensity ratio I113/I202 is linearly correlated with the Mg fraction. The method resulted from an XRD study of adult sea urchins Sterechinus neumayeri.
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Long, Quanming, Qinglin Zhao, Wei Gong, Yuqiang Liu y Wangui Gan. "Effect of Magnesian-Expansive Components in Steel Slag on the Volume Stability of Cement-Based Materials". Materials 16, n.º 13 (28 de junio de 2023): 4675. http://dx.doi.org/10.3390/ma16134675.

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Millimeter-scale magnesian refractory granules were found to be a unique magnesian-expansive component in steel slag. To systematically study the effects of these granular magnesian-expansive components on the volume stability of cement-based materials containing steel slag, an investigation of their existing forms and influence on the volume stability was conducted in this paper. The various-sizing waste–magnesium–chromate-based refractory brick (Mg-Cr brick) granules and different (FeO + MnO)/MgO ratios’ synthetic MgO·xFeO·yMnO ternary solid solutions granules were adopted to simulate magnesian-expansive granules by partially replacing manufactured sand in mortar. The 100 °C–3 h boiling and 213 °C–2 MPa–3 h autoclaving treatments were adopted as volume stability testing methods. The results indicated that whether Mg-Cr brick or MgO·xFeO·yMnO solid solution, the concentration of expansive stress and the anisotropy expansion came with the granular size rising weakening the volume stability of cement-based materials which contained magnesian-expansive granules, significantly. Meanwhile, this phenomenon resulted in the ineffectiveness of the single linear expansion rate when assessing the qualification of volume stability. Furthermore, it also changed the mortars’ failure mode from “muddy damage” to “break into blocks”. Especially, there is no volume stability issue when the MgO·xFeO·yMnO satisfied (FeO + MnO)/MgO ≥ 1.00. Considering the significant effect of the granular magnesian-expansive components on the volume stability of cement-based materials containing steel slag, it is imperative to enhance the detection of both MgO content and mineral existing forms in steel slag in practical applications. For recommendation, the threshold value of conducting autoclaved volume stability testing on steel slag should be set at MgO ≥ 3%. Furthermore, the qualification cannot be judged by the single linear expansion rate; the specimens’ appearance integrity and strength loss should also be noted.
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Joshua D. Sosin. "Magnesian Inviolability". Transactions of the American Philological Association 139, n.º 2 (2009): 369–410. http://dx.doi.org/10.1353/apa.0.0035.

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Mitina, Natalia A., Vasiliy A. Lotov, Margarita A. Kovaleva y Natali O. Kopanitsa. "PEAT-CONTAINING COMPOSITION CONTAINING MAGNESIA BINDER". IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, n.º 8 (21 de agosto de 2018): 81. http://dx.doi.org/10.6060/ivkkt201861008.5729.

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Based on the new hydraulic magnesia binder, the compositions of the peat-containing composite material have been proposed and investigated. Hydraulic magnesia binder is an astringent composition of hydration-reaction hardening, which consists of an active caustic magnesia powder and a mixing fluid. As the fluid mixing an aqueous solution of magnesium bicarbonate Mg(HCO3)2 with a concentration of 13 g/l was used. Hardening forms water-insoluble products - magnesium hydroxide Mg(OH)2 and magnesium bicarbonates of general formula MgCO3·zMg(OH)2·nH2O, which makes it possible to harden and used products based on such a binder as in the air, and in water. The use of peat as a filler of the developed compositions will make it possible to obtain lightweight waterproof materials and products of heat-insulating purpose. It has been shown that the peat-and-magnesian compositions of all compositions have a hydration hardening coefficient of more than 1.0, which indicates intensification of the hydration and hardening processes in water conditions in comparison with air and large strength parameters. Using XRD the phase composition of peat products and peat- magnesium hardening compositions was established. Thermal analysis showed the presence of magnesium hydrogencarbonates in samples of compositions that are in the form of slightly crystallized neoplasms. Investigations by electron microscopy confirmed the presence of hydrocarbons such as magnesium particles dipingite Mg5(CO3)4(OH)2·5H2O and hydromagnesite Mg5(CO3)4(OH)2·4H2O in the form of thin plates with the vertical direction of crystallization. Increased water resistance of compositions based on hydraulic magnesia binder with non-water-resistant filler peat is due to mineralization of peat particles due to their impregnation with a solution of magnesium bicarbonate and the formation of water-soluble magnesium hydrogen carbonates in the loose porous structure of peat.
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Shiraishi, Kazuyuki, Takanobu Oba, Morihisa Suzuki y Ken’ichi Ishikawa. "Subsilicic magnesian potassium-hastingsite from the Prince Olav Coast, East Antarctica". Mineralogical Magazine 58, n.º 393 (diciembre de 1994): 621–27. http://dx.doi.org/10.1180/minmag.1994.058.393.11.

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AbstractTwo subsilicic magnesian potassium-hastingsites (4.55 and 4.34 wt.% K2O) and one magnesian potassium-hastingsite occur in calc-silicate pods in well-layered gneisses from the transitional amphibolite- and granulite-facies terrain of a Cambrian metamorphic complex, East Antarctica. Subsilicic magnesian potassium-hastingsite is the most K-rich Ca-amphibole yet reported:
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Benkhamallah, Z., M. Benyahia y A. Ayache. "Hydrochemical study of groundwater in province of Ain Temouchent (western Algeria)". Journal of Fundamental and Applied Sciences 12, n.º 3 (1 de septiembre de 2020): 1298–312. http://dx.doi.org/10.4314/jfas.v12i3.19.

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Groundwater resources are very scarce in the Ain Temouchent region due to the geological nature. Their operations are essential to increase the volume of water to meet the needs of the population, socio-economic development; agriculture and urbanization have accentuated the problem of their shortages. The results of the physico-chemical analyses of the various samples taken from the fifteen underground sources; show us that these waters are chlorinated, sulphated, calcic and magnesian in nature; Bicarbonate, calcic and magnesian and sodic and potassic, with high electrical conductivity and significant mineralization, evolve slightly from south to north. A predominance of chlorides, magnesium, a high content of calcium, are influenced in some places by the lithology and mineralogy of the aquifer, but also by precipitation and high evaporation in these areas, in some cases by the overexploitation of aquifers.
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Zyryanova, V. N., E. V. Lytkina y A. P. Ochur-Ool. "Serpentinite Magnesium Binders, Based on Technogenic Raw Materials". Solid State Phenomena 316 (abril de 2021): 1050–54. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.1050.

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Increasing water resistance and mechanical strength of hardening magnesian binders’ products can be achieved by introducing microfillings into a hardening dispersed system. It is shown that serpentine provides an increase strength and water resistance in hydration and hardening process, being as a structure-forming component, it intensifies this process. It allows expanding the raw material base for the production of magnesia binders for construction purposes.
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Tesis sobre el tema "Magnesian"

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Ellis, Sam. "Ecological studies of the butterflies of magnesian limestone grassland". Thesis, University of Sunderland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295744.

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Riley, James D. "Restoration of magnesian limestone grassland on former quarry sites". Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246688.

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Deknatel, William Brockway. "A theoretical model of component activities in magnesian calcites". Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185369.

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Calcium carbonate, calcite, and magnesium carbonate, magnesite, form a series of solid solutions with compositions ranging 0 to 50% magnesite which is dolomite the end member of the series. The calcite magnesite solid solutions are called magnesian calcites (Mg-calcites). Mg-calcites exist in nature, in soils, in marine skeletal materials, in some marine cements, etc., and their existence has been associated with the supersaturation of calcite in sea water and the soil solution of some calcareous soils. They are clearly more soluble than calcite, but their chemical properties has not been defined. This paper examines the basic chemistry of the Mg-calcites and develops a theoretical model derived from the regular solution model and based on classical equilibrium thermodynamics. This model can be used to predict solubility and explain the behavior of the Mg-calcites.
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Mitchell, David Norman. "The plant ecology and conservation of magnesian limestone sea cliffs, County Durham". Thesis, University of Sunderland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295771.

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Laycock, Elizabeth Anne. "Frost degradation and weathering of the Magnesian Limestone building stone of the Yorkshire province". Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267105.

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Deknatel, William Brockway. "USE OF THE SOLUTION MODELS TO CALCULATE THE ACTIVITY COMPOSITION RELATIONS OF MAGNESIAN CALCITES (SOLID, CARBONATES)". Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291512.

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Coles, Geraint. "Aspects of the application of palynology to cave deposits in the magnesian limestone region of North Nottinghamshire". Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285562.

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Buggakupta, Wantanee. "Microstructure and thermal expansion behaviour of magnesia-magnesium aluminate composites". Thesis, University of Surrey, 2008. http://epubs.surrey.ac.uk/713/.

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Knowledge of the coefficient of thermal expansion (CTE) of a ceramic material is important in many application areas. Whilst the CTE can be measured, it would be useful to be able to predict the expansion behaviour of multiphase materials. There are several models for the CTE, however, most require a knowledge of the elastic properties of the constituent phases and do not take account of the microstructural features ·of the material. If the CTE could be predicted on the basis ofmicrostructural information, this would then lead to the ability to engineer the microstructure of multiphase ceramic materials to produce acceptable thermal expansion behaviour. To investigate this possibility, magnesia-magnesium aluminate spinel (MMAS) composites, consisting of a magnesia matrix and magnesium aluminate spinel (MAS) particles, were studied. Having determined a procedure to produce MAS from alumina and magnesia, via solid state sintering, magnesia-rich compositions with various magnesia contents were prepared to make the MMAS composites. Further, the MMAS composites prepared from different powders (i.e. from an alumina-magnesia mixture and from a magnesia-spinel powder) were compared. Com starch was added into the powder mixtures before sintering to make porous microstructures. Microstructural development and thermal expansion behaviour of the MMAS composites were investigated. Microstructures of the MAS and the MMAS composites as well as their porous bodies were quantified from backscattered electron micrographs in terms of the connectivity of solids i.e. solid contiguity by means of linear intercept counting. Solid contiguity decreased with increasing pore content and varied with pore size, pore shape and pore distribution whereas the phase contiguity depended strongly on the chemical composition and was less influenced by porosity. The thermal expansion behaviour of the MAS and the MMAS composites between 100 and 1000 °C was determined experimentally. Variation in the CTE of the MAS relates to the degree of spinel formation while the thermal expansion of the MMAS composites depends strongly on phase content. However, the MMAS composites with similar phase compositions but made from different manufacturing processes showed differences in microstructural features and thermal expansion behaviour. Predictions of the CTE values for composites based on a simple rule-of-mixtures (ROM) using volume fraction were compared with the measured data. A conventional ROM accurately predicted the effective CTE of a range of dense alumina-silicon carbide particulate composites but was not very accurate for porous multiphase structures. It provided an upper bound prediction as all experimental values were lower. Hence, the conventional ROM was modified to take account of quantitative microstructural parameters obtained from solid contiguity. The modified ROM predicted lower values and gave a good agreement with the experimental data. Thus, it has been shown that quantitative microstructural information can be used to predict the CTE of multiphase ceramic materials with complex microstructures.
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Unluer, Cise. "Enhancing the carbonation of reactive magnesia cement-based porous blocks". Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610879.

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Arruda, Cezar Carvalho de. "Processos de hidroxilação do óxido de magnésio (MgO): sínter e magnésia cáustica". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-14072014-112443/.

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A principal limitação do uso de MgO em refratários é a facilidade com que reage com água formando hidróxido de magnésio (Mg(OH)2) que, devido à sua menor densidade, causa tensões destrutivas nesses materiais. Para outras aplicações, no entanto, a reação de hidroxilação do MgO é necessária, como em produção de agentes antichamas, em compósitos poliméricos e na correção de pH de solos. Observações empíricas na literatura demonstraram que diferentes fontes de MgO possuem reatividades e sensibilidades à hidroxilação distintas. Este estudo analisou o impacto de variáveis externas (por exemplo, a liberação de calor que ocorre durante a reação ou o volume das amostras) que ainda não foi completamente compreendido. O impacto auto-catalítico da temperatura reacional e da exotermia da reação foi avaliado. Por meio de medidas de temperatura in situ e de grau de hidroxilação termogravimétrico, também foram estudados os impactos do volume das amostras testadas e da concentração de sólidos nas suspensões, por meio de medidas de temperatura in situ e termogravimetria. Analisou-se também as principais diferenças estruturais entre duas principais fontes de MgO (sínter de MgO e magnésia cáustica): morfologia de partículas, densidade e área superficial específica. Em seguida, os mecanismos de hidroxilação em suspensões aquosas e seus efeitos foram avaliados por meio de testes de hidroxilação seguidos de termogravimetria, difração de raios-X, medidas de condutividade iônica, densidade, área superficial específica e microscopia eletrônica, e relacionado com as características físico-químicas e morfológicas das respectivas fontes de MgO. Pôde-se constatar que diferenças significativas entre a temperatura nominal do meio reacional e no interior da amostra podem afetar a cinética de hidroxilação do material. O volume e a concentração de sólidos variáveis também podem acentuar consideravelmente os efeitos da exotermia e gerar gradientes de hidroxilação. Também se verificou que a morfologia e a quantidade do Mg(OH)2 formado mudam significativamente dependendo do precursor e em função das condições de tempo-temperatura.
The use of MgO in refractories is restrict due to the easy reaction with water forming magnesium hydroxide (Mg(OH)2). Its lower density causes compressive stresses that can crack their structure. On the other hand, for applications such as the production of flame retardant agents for polymer composites and pH correcting of contaminated soil, this reaction is necessary. Empirical observations in the literature have shown that different sources of MgO have district levels of chemical reactiveness. The present study analyzed the main structural differences between the two main sources of MgO (magnesia sinter and caustic magnesia): particle morphology, density and specific surface area. The mechanisms of hydroxylation of these raw materials in aqueous suspensions and their effects were followed by hydroxylation tests, X-ray diffraction, ionic conductivity, density, specific surface area and scanning electron microscopy. They were associated with the physical characteristics morphological, chemical of these MgO sources. The impact of external variables (e.g., heat release during the reaction or the sample volume), that was not yet completely understood, was also evaluated through temperature measurements carried out in situ and hydroxylation degree accessed by thermogravimetry. The effects of samples volume and solid concentration in aqueous suspension were also investigated. The results showed that differences between the ambient temperature and reaction inside sample temperature can affect the kinetics of hydroxylation of the material. The samples volume and solids concentration can also enhance significantly the effects of heat release and generate gradients of hydroxylation. It was also found out that the morphology and the amount of Mg(OH)2 formed can change depending on the precursor and on the time-temperature conditions.
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Libros sobre el tema "Magnesian"

1

Bingöl, Orhan. Menderes Magnesiası: Magnesia ad Maeandrum. Ankara [i.e. Aydın, Turkey]: Aydın Valiliği, 1998.

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Mitchell, W. I. The permian magnesian limestone at Grange, Co. Tyrone - a potential source of dolomite. Belfast: Institute of Geological Sciences, Geological Survey of Northern Ireland, 1987.

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Bingöl, Orhan. Menderes Magnesiası Theatron =: Theatron, Magnesia on the Meander. İstanbul: Homer Kitabevi, 2005.

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National Mineral Development Corporation Limited., ed. Environmental impact assessment of proposed DBM plant at Panthal (J & K). Secunderabad: Vimta Labs, 1991.

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Fleet, M. Monitoring for leachate migration from landfills in magnesian limestone quarries at Old Wingate and Joint Stocks, Durham (1984-1992): Final report to the Department of the Environment. London: Department of the Environment, 1993.

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M, Avedesian M., Baker Hugh y ASM International. Handbook Committee., eds. Magnesium and magnesium alloys. Materials Park, OH: ASM International, 1999.

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Kramer, Deborah A. Magnesium and magnesium compounds. Washington, D.C: U.S. Department of the Interior, Bureau of Mines, 1991.

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Magnesium, magnesium alloys, and magnesium composites: A guide. New York: Wiley, 2011.

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Uttley, Colin. Magnesium. New York: Benchmark Books, 2000.

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Luo, Alan, Mihriban Pekguleryuz, Sean Agnew, John Allison, Karl Kainer, Eric Nyberg, Warren Poole, Kumar Sadayappan, Bruce Williams y Steve Yue, eds. Magnesium 2021. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72432-0.

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Capítulos de libros sobre el tema "Magnesian"

1

Greensmith, J. T. "Magnesian limestones and dolomites". En Petrology of the Sedimentary Rocks, 141–52. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-011-9640-6_8.

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Komov, I. L. y E. Kulish. "Methods of exploration and investigation of the Magnesian raw material in Ukraine". En Mineral Deposits at the Beginning of the 21st Century, 993–96. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003077503-253.

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Lysak, Vladimir I., Vladimir A. Pronin y Sergei M. Borisenkov. "Manufacturing Technology and Properties of Steel-and Aluminium-Magnesian Composite Features and Units". En MICC 90, 901–2. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3676-1_169.

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Litvinenko, A. K., D. A. Litvinenko y A. F. Fedorov. "Periclase from Kuhilal Deposit, Southwestern Pamirs as a Result of Magnesian Solfats and Chlorites Metamorphism". En Springer Proceedings in Earth and Environmental Sciences, 194–201. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23390-6_25.

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Müller, Jens y Frank Fabricius. "Magnesian-Calcite Nodules in the Ionian Deep Sea: An Actualistic Model for the Formation of Some Nodular Limestones". En Pelagic Sediments: On Land and under the Sea, 235–47. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444304855.ch10.

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Gooch, Jan W. "Magnesia". En Encyclopedic Dictionary of Polymers, 439. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7109.

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Song, Guangling y Andrej Atrens. "Understanding the Corrosion Mechanism: A Framework for Improving the Performance of Magnesium Alloys". En Magnesium, 507–16. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch80.

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Öteyaka, Mustafa Özgür, Anne-Marie Lafront, Edward Ghali y Réal Tremblay. "Potentiodynamic Studies of Some AZ and ZA Magnesium Alloys in Different Corrosive Media". En Magnesium, 517–23. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch81.

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Gregg, Peter. "Plating of Magnesium - New Developments". En Magnesium, 524–28. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch82.

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Walter, Michael. "Surface Treatment of Magnesium Substrates". En Magnesium, 529–33. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch83.

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Actas de conferencias sobre el tema "Magnesian"

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Sanchez, Reed y Christopher S. Romanek. "MAGNESIAN CALCITE AS A PALEOENVIRONMENTAL INDICATOR". En 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-326938.

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Sleiman, Johnpaul y Chris Romanek. "MAGNESIAN CALCITE AS A PALEOENVIRONMENTAL INDICATOR". En Southeastern Section-70th Annual Meeting-2021. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021se-362310.

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Shchiptsov, Vladimir. "HIGH-MAGNESIAN RAW MATERIALS: MINERAL PRODUCTS OF THE KARELIA-KOLA REGION (RUSSIA)". En 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b11/s1.028.

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Phillips, Mitchell y Christy B. Till. "DECOMPRESSION RATES VIA GEOSPEEDOMETRY OF PRIMITIVE MAGNESIAN ANDESITE AT MT. SHASTA, CALIFORNIA". En GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-337564.

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Herlinger Jr, Ronaldo, Gabriel do Nascimento Freitas, Camila Dias Wense dos Anjos y Luiz Fernando De Ros. "PETROLOGICAL AND PETROPHYSICAL IMPLICATIONS OF MAGNESIAN CLAYS IN BRAZILIAN PRE-SALT DEPOSITS". En 2020 SPWLA 61st Annual Online Symposium. Society of Petrophysicists and Well Log Analysts, 2020. http://dx.doi.org/10.30632/spwla-5004.

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Marincea, Stefan, Adrian Iulian Pantia, Delia-Georgeta Dumitras, Cristina Sava Ghinet y Andra Filiuta. "Hydrothermal fluorapatite in magnesian skarns from Valea Rea (Budureasa, Bihor Mountains, Romania)". En Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.4107.

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Pantia, Adrian, Stefan Marincea, Andra Filiuta, Delia-Georgeta Dumitras y Cristina Sava Ghinet. "Preliminary mineralogical study of the magnesian skarn from Valea Rea (Budureasa, Bihor Mountain, Romania)". En Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.7376.

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Tolkachev, G. M., A. S. Kozlov, A. V. Anisimova y A. M. Pastukhov. "Experience With Magnesian Cements for Casing Oil Wells in a Salt-Bearing Reservoir, East Siberia". En GeoBaikal 2014. Netherlands: EAGE Publications BV, 2014. http://dx.doi.org/10.3997/2214-4609.20141729.

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Sava Ghinet, Cristina y Stefan Marincea. "Phlogopite in magnesian skarns from seven occurrences in the Banatitic Magmatic and Metallogenetic Belt, Romania". En Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.6954.

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Rakhimov, I. R. y E. L. Kunakkuzin. "PETROLOGICAL AND GEOCHEMICAL FEATURES OF THE TASHLY-TAU ORE-BEARING MASSIF (KHUDOLAZ COMPLEX, SOUTH URALS)". En Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. Пермский государственный национальный исследовательский университет, 2021. http://dx.doi.org/10.17072/chirvinsky.2021.197.

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Petrographic and petrological-geochemical studies of the Tashly-Tau ore-bearing massif rocks of the Khudolaz complex have been carried out. It was revealed that the rocks are rich in hornblende and can be called olivine plagiogornblendites. They are characterized by high concentrations of LILE (Cs, Rb, Sr, Ba) and low concentrations of HFSE (Nb, Ta, Zr, Hf, REE). It was established by geochemical thermometry that the parental magma was a water-saturated, moderate magnesian melt containing olivine phenocrysts in an amount of 16–18 wt.%. Sr-Nd isotopic data (εNd (Т) = + 5.2… + 10.3, εSrUR (Т) = 0… + 3.72) indicate a weak crustal contamination of the parental melt by upper crust. The source of the parental melt could be a PREMA-type mantle reservoir.
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Informes sobre el tema "Magnesian"

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Peterson, T. D., N. Wodicka, S J Pehrsson, P. Acosta-Gongora, V. Tschirhart, C. J. Jefferson, H. Steenkamp, E. Martel, J. Percival y D. Corrigan. The Rae Province at 2.6 Ga: a sanukitoid storm on the Canadian Shield, Nunavut. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332505.

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Between 2.62 and 2.58 Ga, Rae Province was intruded from Lake Athabasca to Melville Peninsula (more than 1700 km) by mafic to felsic plutons (Snow Island Suite), and overlain by volcanic rocks that are now mostly preserved beneath Paleoproterozoic basins. The Snow Island Suite was preceded by offshore arc volcanism and possible back-arc basin activity, with a U-Pb age peak at 2.635 Ga (Marjorie peak). About 50% of the Snow Island Suite is an infracrustal granitoid with K-enriched and tonalitic subtypes; the remainder lies on a sanukitoid spectrum. The sanukitoidal rocks are dominantly orthopyroxene-bearing magnesian diorite and monzodiorite with Mesoarchean Nd model ages. Some isotopically juvenile Snow Island Suite and Marjorie peak mafic rocks also have strong sanukitoid or adakite trace-element signatures. Four important features in the data are: 1) Marjorie peak mafic assemblages are prominent on the southeastern edge of Rae Province. Related nickel showings are present in south Rae Province Marjorie peak and early Snow Island Suite rocks; 2) U-Pb ages in the Snow Island Suite young toward the west edge of the province; 3) the Committee Bay Block (north-central Rae Province) is distinctively rich in infracrustal Snow Island Suite migmatite and poor in Snow Island Suite sanukitoid rocks and in tonalite of any age; and 4) there is a marked shift from tonalite-rich infracrustal sources in south Rae Province to more tonalite-poor sources in central Rae Province. The data are consistent with the Snow Island Suite, representing a continental magmatic arc segment, verging westward, with ponding of mafic magmas, inducing melting in the lower lithosphere to generate intermediate melts that ascended and induced additional melting in the middle to upper crust to generate granite.
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BHATTACHARYYA, SANJOY, SARKAR DIPNARAYAN, BASAK SUBHADEEP, BAGCHI RUMINA, MANDAL PRITHWIKAR y HALDER ALAPAN. Magnesium sulphate prophylaxis in severe preeclampsia-lessons learnt from recent trials conducted in low-middle-income-countries--a systematic review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, abril de 2023. http://dx.doi.org/10.37766/inplasy2023.4.0031.

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Review question / Objective: The main objective of this research is to find answers to whether an adjusted low dose or an abbreviated regimen or even a single loading dose of magnesium sulphate prophylaxis is capable of preventing eclampsia in severe preeclamptics instead of applying full traditional dosing and if so, which regimen among them can be suggested safely and finally, even if chosen, can any of this modified regimen be applicable for all severely preeclamptic women indiscriminately? With the above context, we have done a systematic review of available studies that compared the effectiveness of different magnesium sulphate regimens applied to severely preeclamptic women of LMIC aiming to prevent eclampsia. Magnesium sulphate prophylaxis in severe preeclampsia-lessons learnt from recent trials conducted in low-middle-income-countries--a systematic review
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Collings, R. K. y P. R. A. Andrews. Magnesite, brucite and dolomite. Natural Resources Canada/CMSS/Information Management, 1990. http://dx.doi.org/10.4095/328629.

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Yunovich y Thompson. L51886 Performance of Magnesium Anodes. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), mayo de 2003. http://dx.doi.org/10.55274/r0010391.

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Magnesium anodes are provided to the corrosion control industry by a number of domestic and international manufacturers and distributors. Due to the difficulty and time involved in performance testing, anode composition is commonly the only criterion used for quality control by the end users. However, experience has shown that compliance of the anode chemical composition with the ASTM B843 Standard Specification for Magnesium Alloy Anodes for Cathodic Protection can be misleading and does not always differentiate between the anodes of different quality. Thousands of magnesium anodes are produced annually and provided by a number of suppliers to the corrosion control industry. Though the composition of the anodes from the various sources is comparable, the performance of the magnesium anodes is often radically different. Many of these materials have been shown to meet the compositional and potential specifications, and yet have had measured efficiencies as low as 7%. The objectives of this project were: (1) to develop quality and performance standards determined by laboratory tests and field exposures. The project included testing a variety of anodes submitted by the manufacturers/distributors and the end users, representing all spectrum of the ASTM G97 Standard Test Method-based efficiency values; the anodes were characterized with respect to the Anode source, manufacturing process, macrostructure, chemical composition, anode type (standard/H-1 family /AZ63 family versus high-potential), and microstructure. Other investigations comprised assessment of the ASTM G97 Standard Test Method parameters that were most likely to make the most significant impact on the resulting anode efficiency values, e.g., testing environment (standard testing solution and saturated backfill), and current density (the low 1/10th of the standard'), the ASTM G97 standard, and the high (10X standard) values). Testing in saturated backfill was used for a comparison between the laboratory- and the field-based efficiencies.
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Ayala, Alicia, Erica L. Corral, Ronald E. Loehman, Denise Nora Bencoe, Markus Reiterer y Raja A. Shah. Tape casting of magnesium oxide. Office of Scientific and Technical Information (OSTI), febrero de 2008. http://dx.doi.org/10.2172/946584.

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Nenoff, Tina Maria, Justin S. Durkin, Luke L. Daemen, Nathan W. Ockwig, Randall Timothy Cygan y Jeffery A. Greathouse. Nanoconfined water in magnesium-rich phyllosilicates. Office of Scientific and Technical Information (OSTI), octubre de 2009. http://dx.doi.org/10.2172/976948.

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Tuttle, B. A., J. A. Voigt, D. L. Sipola, W. R. Olson y D. M. Goy. Chemically prepared lead magnesium niobate dielectrics. Office of Scientific and Technical Information (OSTI), noviembre de 1998. http://dx.doi.org/10.2172/666017.

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Rossiter, Walter J. y Robert G. Mathey. Magnesium oxychloride cement-based foam insulation :. Gaithersburg, MD: National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.ir.86-3326.

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Jones, Tyrone L., Richard D. DeLorme, Matthew S. Burkins y William A. Gooch. Ballistic Evaluation of Magnesium Alloy AZ31B. Fort Belvoir, VA: Defense Technical Information Center, abril de 2007. http://dx.doi.org/10.21236/ada466839.

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Makarova, Svetlana, Natalia Bulina y Olga Vinokurova. Mechanochemical synthesis of magnesium substituted hydroxyapatite. Peeref, julio de 2023. http://dx.doi.org/10.54985/peeref.2307p5325121.

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