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86 results for “Calcium carbonate”
Faint calcium-rich transient from a double-detonation of a 0.6 M⊙ carbon-oxygen white dwarf star: Complimentary material
<p>Complimentary material to the manuscript.<br> The videos show the hydrodynamical evolution of the merger leading to the double-detonation.</p> <p>The movie "overdensity_formation.mp4" shows slices through the orbital plane color coded with the density (left) and the temperature (right), displaying frame by frame the formation of a cold, overdense fluid parcel after the disruption of the HeWD. <br> <br> The remaining movies show the overall evolution of different quantities with slices through the orbital plane on the left and perpendicular to the orbital plane on the right.</p>
Large variations of Calcium isotopes in Lutao arc volcanic rocks: Influence of recycled marine carbonate and partial melting
<p>The dataset for the manuscript in preparation: Large variations of Calcium isotopes in Lutao arc volcanic rocks: Influence of recycled marine carbonate and partial melting</p>
Virus – calcium carbonate composites: Possible mechanisms of bacteriophage-induced vaterite formation - Dataset
<p>Raw data (optical microscopy, electron microscopy, X-ray diffraction) from carbonate precipitation experiments in the presence of bacterial viruses.</p>
bromate incorporation in calcium carbonates - density functional theory data
<p>Dataset relating to publication on bromate incorporation in calcium carbonate phases calcite and aragonite, by SDM, DF, and RGC. Configurations generated using Site Occupancy Disorder code and structural optimisation carried out within the density functional theory. </p>
Hybrid AgNPs/eggshell calcium carbonate particles and their antimicrobial efficiency
<p>In this study, hybrid particles of AgNPs<span>-</span>loaded eggshell calcium carbonate <span>(</span>AgNPs<span>/</span>eCaCO<sub>3</sub><span>)</span> were prepared<em> in situ</em> by precipitating the eggshell in the presence of freshly prepared AgNPs with a particle size of 10<span>-</span>30 nm<span>. </span>The hybrid particles were comparatively precipitated<em> in situ</em> at 25 °C and 35 °C using poly <span>(</span>sodium 4<span>-</span>styrenesulphonate<span>) </span>as a polyelectrolyte<span>. </span>The AgNPs<span>/</span>eCaCO<sub>3</sub> particles prepared at 25 °C had a spherical morphology with a mean diameter of 3<span>.</span>56 mm, and BET surface area of 85.08 m<sup>2</sup>/g. On the other hand, the particles prepared at 35 °C had a broader size distribution with a mean diameter of 3<span>.</span>19 mm, and a BET surface area of 79.25 m<sup>2</sup>/g<span>.</span> AgNPs<span>-</span>loaded commercial calcium carbonate particles<span> (</span>AgNPs<span>/</span>e=CaCO<sub>3</sub><span>) </span>comparatively prepared at 35 °C were perfectly spherical with a mean diameter of 5<span>.</span>61 mm<span>. </span>At preparing temperature of 25 °C, the hybrid particles contain AgNPs of 0<span>.</span>78 wt<span>% </span>for AgNPs<span>/</span>eCaCO<sub>3</sub> and 3<span>.</span>20 wt<span>% </span>for AgNPs<span>/</span>CaCO<sub>3</sub><span>. </span>The AgNPs<span>/</span>eCaCO<sub>3</sub> and AgNPs<span>/</span>CaCO<sub>3</sub> particles exhibited the same efficiency against bacteria extracted from beef with an average inhibition zone diameter of 7–10 mm according to the modified Kirby<span>–</span>Bauer disc diffusion assay depending on their concentration and beef source<span>. </span>Freshly prepared silver colloids showed comparatively poorer antimicrobial efficiency with an inhibition zone diameter around 7 mm<span>. </span></p>
Pharmacokinetics of Oral Calcium Carbonate in Parturients
ClinicalTrials.gov study NCT06650930. IPD Sharing: NO. Countries: 1. Publications: 4.
Equivalence of Calcium Acetate Oral Solution and Sevelamer Carbonate Tablets in Hemodialysis Patients
ClinicalTrials.gov study NCT01427907. IPD Sharing: Not stated. Countries: 1. Publications: 1.
A Study to Assess the Pharmacokinetics of Lanthanum Carbonate, Investigate and Compare the Efficacy, Safety and Tolerability of Lanthanum Carbonate With Calcium Carbonate in Hyperphosphataemic Childre
ClinicalTrials.gov study NCT01696279. IPD Sharing: Not stated. Countries: 9. Publications: 1.
Data from: Calcium carbonate and phosphorus interactions in inland waters
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Hybrid AgNPs/eggshell calcium carbonate particles and their antimicrobial efficiency
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Data from: Understanding the role of pig manure, rice straw and calcium carbonate on the cadmium pollution in soil-wheat system
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Uranium accumulation in Brassica juncea plant facilitated by calcium in carbonate water
The role of calcium (Ca) on the cellular distribution of U(VI) in Brassica juncea roots and root-to-shoot translocation was investigated using hydroponic experiments, microscopy, and spectroscopy. Uranium accumulated mainly in the roots (727−9376 mg kg−1) after 30 days of exposure to 80 μM dissolved U in water containing 1 mM HCO3 − at different Ca concentrations (0−6 mM) at pH 7.5. However, the concentration of U in the shoots increased 22 times in experiments with 6 mM Ca compared to 0 mM Ca. In the Ca control experiment, transmission electron microscopy−energy-dispersive spectroscopy analyses detected U−P-bearing precipitates in the cortical apoplast of parenchyma cells. In experiments with 0.3 mM Ca, U−P-bearing precipitates were detected in the cortical apoplast and the bordered pits of xylem cells. In experiments with 6 mM Ca, U−P-bearing precipitates aggregated in the xylem with no apoplastic precipitation. These results indicate that Ca in carbonate water inhibits the transport and precipitation of U in the root cortical apoplast and facilitates the symplastic transport and translocation toward shoots. These findings reveal the considerable role of Ca in the presence of carbonate in facilitating the transport of U in plants and present new insights for future assessment and phytoremediation strategies.
Calcium stable isotopes of Tonga and Mariana arc lavas and implications for slab fluid-mediated carbonate transfer in subduction zones
<p>The Table 1 shows Ca isotopes and selected major and trace element compositions of the Tonga rear arc and Mariana arc lavas.</p> <p>Supporting imformation includ Figure S1 and Table S1</p> <p>Figure S1 shows the δ<sup>44/42</sup>Ca‰ versus δ<sup>43/42</sup>Ca‰ in all samples and reference materials measured by Nu Plasma 1700 MC-ICP-MS in GPMR.</p> <p>Table S1 lists the major and trace element contents of NW Rota-1 and Esmeralda Bank samples from Mariana arc. Major elements are tested on board and trace elements are measured by ICP-MS in GPMR.</p>
Supplementary material 4 from: Miyazaki Y, Reimer JD (2015) A new genus and species of octocoral with aragonite calcium-carbonate skeleton (Octocorallia, Helioporacea) from Okinawa, Japan. ZooKeys 511: 1-23. https://doi.org/10.3897/zookeys.511.9432
Supplemental Table 4: Explanation note: Genetic distances (p-distances) for mtMutS between Nanipora kamurai and Heliopora coelurea, and for other species of octocorals included in COI phylogeny (See Suppl. material 2).
Supplementary material 3 from: Miyazaki Y, Reimer JD (2015) A new genus and species of octocoral with aragonite calcium-carbonate skeleton (Octocorallia, Helioporacea) from Okinawa, Japan. ZooKeys 511: 1-23. https://doi.org/10.3897/zookeys.511.9432
Supplemental Table 3: Explanation note: Genetic distances (p-distances) for mtMutS between Nanipora kamurai and Heliopora coelurea and for other species of octocorals included in mtMutS phylogeny (see Fig. 12 and Suppl. material 2).
Supplementary material 2 from: Miyazaki Y, Reimer JD (2015) A new genus and species of octocoral with aragonite calcium-carbonate skeleton (Octocorallia, Helioporacea) from Okinawa, Japan. ZooKeys 511: 1-23. https://doi.org/10.3897/zookeys.511.9432
Supplemental Table 2: Explanation note: Outgroup sequences from GenBank used in molecular phylogenetic analyses.
Supplementary material 1 from: Miyazaki Y, Reimer JD (2015) A new genus and species of octocoral with aragonite calcium-carbonate skeleton (Octocorallia, Helioporacea) from Okinawa, Japan. ZooKeys 511: 1-23. https://doi.org/10.3897/zookeys.511.9432
Supplemental Table 1: Explanation note: List of Nanipora kamurai sp. n. specimens examined in this study. Collection information and GenBank accession numbers for corresponding sequences are shown.
(Data on) Regenerated cellulose-mineral composite films formed from dissolution in ionic liquid: comparing calcium carbonate and kaolinite particulate fillers
<p>This dataset covers outcomes of research performed by the authors at Aalto University during years 2023-2024. More indepth analysis of the results will be provided in a separate scientific publication.</p>
Dataset for Marine Geology publication "Estimation of turbidite source area in late Pleistocene to Holocene around Kikai Island based on mineral and biogenic calcium carbonate composition"
<p>This dataset is associated with the academic paper published in "Estimation of turbidite source area in late Pleistocene to Holocene around Kikai Island based on mineral and biogenic calcium carbonate composition" For details of the paper, please refer to the link below.<br><a href="https://doi.org/10.1016/j.margeo.2025.107593">https://doi.org/10.1016/j.margeo.2025.107593</a></p> <p> </p>
molybdenum and sulfur incorporation as oxyanion substitutional impurities in calcium carbonate minerals: density functional theory data
<p>Provided here are density functional theory research datasets generated using the Vienna Ab Initio Simulation Package. Data relates to publication in Chemical Geology, entitled, Molybdenum and sulfur incorporation as oxyanion substitutional impurities in calcium carbonate minerals: A computational investigation. By Scott D Midgley, James O Taylor, Dominik Fleitmann, Ricardo Grau-Crespo. </p> <p>We include here final geometries in .cif format, as well as full OUTCAR files generated in VASP. Using this file, readers can access all details of the DFT simulations reported. </p>
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Allen Brain Atlas
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.