Articles with "high calcium" as a keyword



Synthesis of polypropylene fiber/high-calcium fly ash geopolymer with outdoor heat exposure

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Published in 2017 at "Clean Technologies and Environmental Policy"

DOI: 10.1007/s10098-017-1380-7

Abstract: Solar energy is an important source of renewable and sustainable energy. Thailand is near the equator and thus experiences hot weather throughout the year. The average maximum temperature is 35 °C and can reach 40 °C in… read more here.

Keywords: high calcium; outdoor heat; calcium fly; fly ash ... See more keywords

Properties of metakaolin-high calcium fly ash geopolymer concrete containing recycled aggregate from crushed concrete specimens

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Published in 2018 at "Construction and Building Materials"

DOI: 10.1016/j.conbuildmat.2017.11.152

Abstract: Abstract This study aims to investigate the effects of metakaolin (MK) on the properties of a fly ash-based geopolymer concrete containing 100% recycled coarse aggregate from crushed specimens of laboratory. The MK was used as… read more here.

Keywords: concrete; geopolymer concrete; concrete containing; fly ash ... See more keywords

Utilization of high-calcium fly ashes through mineral carbonation: The cases for Greece, Poland and Spain

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Published in 2019 at "Journal of CO2 Utilization"

DOI: 10.1016/j.jcou.2019.03.020

Abstract: Abstract Limited utilization possibilities of high–calcium fly ashes (HCFA) are a serious issue not only in Europe, but also worldwide. The properties of such waste from coal-fired power plants could be conveniently treated in order… read more here.

Keywords: greece poland; mineral carbonation; carbonation; calcium fly ... See more keywords

Potential of multi-pass ECAP on improving the mechanical properties of a high-calcium-content Mg-Al-Ca-Mn alloy

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Published in 2019 at "Journal of Magnesium and Alloys"

DOI: 10.1016/j.jma.2019.04.008

Abstract: Abstract In this study, the multi-pass equal channel angular pressing (ECAP) was employed on a high-calcium-content Mg-Al-Ca-Mn alloy to tailor its microstructure and mechanical properties. The obtained results showed that the network-shaped Mg2Ca and (Mg,… read more here.

Keywords: alloy; content alloy; mechanical properties; calcium content ... See more keywords
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Mechanical strength and permeation properties of high calcium fly ash-based geopolymer containing recycled brick powder

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Published in 2020 at "Journal of building engineering"

DOI: 10.1016/j.jobe.2020.101655

Abstract: Abstract Geopolymer is a ceramic-like material produced by the combination of alumino-silica source material and alkaline activator. High calcium fly ash is an emerging binding material for production of geopolymer while there is currently growing… read more here.

Keywords: high calcium; strength; brick powder; fly ash ... See more keywords

FT-IR and micro-Raman spectroscopic characterization of minerals in high-calcium coal ashes

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Published in 2017 at "Journal of The Energy Institute"

DOI: 10.1016/j.joei.2017.02.003

Abstract: Abstract Two high-calcium coal ashes were prepared in a muffle furnace at 815 °C. The mineral matter in both coal ashes was characterized by Fourier transform infrared (FT-IR) spectroscopy, micro-Raman spectroscopy, and X-ray diffraction (XRD). The… read more here.

Keywords: coal ashes; high calcium; spectroscopy; micro raman ... See more keywords

Effect of High Calcium and High Iron Coal on Ash Fusion Characteristics of Petroleum Coke during Cogasification

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Published in 2024 at "ACS Omega"

DOI: 10.1021/acsomega.4c04453

Abstract: Entrained flow gasification provides a more efficient utilization method for high-sulfur petroleum coke. The operation temperature of the entrained flow gasifier must be above the ash fusion temperature (AFT) of petroleum coke due to the… read more here.

Keywords: high iron; coal; high calcium; petroleum coke ... See more keywords
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Perspective: Characterization of Dietary Supplements Containing Calcium and Magnesium and Their Respective Ratio-Is a Rising Ratio a Cause for Concern?

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Published in 2020 at "Advances in nutrition"

DOI: 10.1093/advances/nmaa160

Abstract: Low magnesium intakes coupled with high calcium intakes and high calcium-to-magnesium (Ca:Mg) intake ratios have been associated with increased risk for multiple chronic conditions such as cardiovascular disease and metabolic syndrome, as well as some… read more here.

Keywords: dietary supplements; ratio; magnesium; calcium magnesium ... See more keywords

Ceratostigma willmottianum mineralizes atmospheric CO2 into CaCO3 in a high-calcium environment.

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Published in 2025 at "Plant physiology"

DOI: 10.1093/plphys/kiaf134

Abstract: Calcium carbonate (CaCO3) biomineralization is an ancient evolutionary feature of life that plays a key role in environmental adaptation. In plants, CaCO3 deposition is found in several taxa; however, current knowledge of its formation and… read more here.

Keywords: atmospheric co2; high calcium; calcium; caco3 ... See more keywords

Heterologous overexpression of heat shock protein 20 genes of different species of yellow Camellia in Arabidopsis thaliana reveals their roles in high calcium resistance

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Published in 2024 at "BMC Plant Biology"

DOI: 10.1186/s12870-023-04686-x

Abstract: Yellow Camellia ( Camellia sect. chrysantha ) is a rare ornamental plant and an important germplasm resource globally. Camellia nitidissima thrives in normal acidic soils, while Camellia limonia can adapt to the calcareous soils found… read more here.

Keywords: yellow camellia; high calcium; calcium; camellia limonia ... See more keywords

Evolution and diversification of Ca2+/H+ exchangers: insights into karst-plant adaption to high-calcium environment

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Published in 2025 at "BMC Plant Biology"

DOI: 10.1186/s12870-025-07330-y

Abstract: Calcium (Ca2+) is a critical mineral essential for plant growth, development, and signal transduction. The CAX (Ca²⁺/H⁺ exchanger) family represents a group of key transmembrane transporters that mediate Ca2+ transport and homeostasis, thereby playing a… read more here.

Keywords: seed; plant; high calcium; ca2 ... See more keywords