Results 21 to 30 of about 20,659 (250)
The Depositional Record, 2022 Lacustrine non‐skeletal carbonates exhibit a diversity of petrographies due to interactions between physico‐chemical and biologically influenced mechanisms. Despite the suggestion that evaporative concentration was involved in the formation of spherulite
Ramon Mercedes‐Martín +3 more
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Neptunium(V) Coprecipitation with Calcite [PDF]
Environmental Science & Technology, 2007 Coprecipitation experiments of Np(V) and U(VI) with calcite were performed in mixed-flow reactors under steady state conditions at room temperature for up to 400 h at precipitation rates of 1.0 x 10(-8) to 6.8 x 10(-8) mol/(m2 s). The saturation index with respect to calcite varied between 0.04 and 0.95.
Heberling, F. +2 more
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Improvement of post-nickel mining soil fertility with biochar and calcite
Journal of Degraded and Mining Lands Management, 2022 Reclamation of post-nickel mining soil requires a long process and renewable innovations to improve soil properties. One of the alternative technologies for post-mining soil reclamation is utilizing oil palm empty fruit bunches (OEFB) as biochar and ...
Muhammad Jayadi +3 more
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Correlation of the entrainment factor with frother types and their mixtures in the column flotation
Cumhuriyet Science Journal, 2019 In flotation, entrainment is a mechanical mass transfer process and itis based on the changes depending on the establishment of linear relationshipbetween water and solid recovery. The present paper presents results obtainedin investigating the effect of
Hülya Kurşun
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Buildings, 2021 Determining the age of ancient architectural and cultural monuments is a significant scientific problem. An approach based on the transformation of portlandite into calcite and subsequent recrystallization of calcite is considered, which allows for ...
Vladimir Kotlyar +5 more
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Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 Calcium phosphate coatings containing brushite, calcite, and apatite were obtained by electrochemical deposition on titanium plates at room temperature, pH 5, constant current density 30 mA/cm2, from CaCO3/Ca(H2PO4)2 suspension electrolyte.
A.E. Doroshenko +6 more
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Evaluating the Effect of 18O Incorporation on the Vibrational Spectra of Vaterite and Calcite
Crystals, 2022 Calcium carbonates are critical in biomineralization processes and as functional materials. For many applications, isotope enrichment in these materials allows researchers to monitor reaction pathways and retrace environmental signatures.
Helen E. King +2 more
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High P-T Calcite-Aragonite Phase Transitions Under Hydrous and Anhydrous Conditions
Frontiers in Earth Science, 2022 The subduction of calcite into deep Earth and subsequent phase change are important for global carbon cycle. However, the study of the phase boundary between calcite and aragonite under high P-T conditions is insufficient due to sparse existing phase ...
Xia Zhao +10 more
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Dyna, 2018 Five tryptone concentrations (0.2%, 0.4%, 0.6%, 0.8% and 1.0%) were evaluated on calcium carbonate biomineralization processes, using 0.5% of calcium acetate.
Gerardo Andrés Caicedo-Pineda +3 more
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Calcite-dissolving bacteria: promising approach as bio-fertilizer
Frontiers in MicrobiologyCalcium (Ca) is an essential macronutrient and a secondary messenger for the proper growth and functioning of plants. It is essential for membrane stability, cell integrity, cell division, and elongation.
Christina Lemson Hambo +4 more
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