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2,118 results for “Metal”
Figure 9 in Metal-Age Maritime Culture at Jareng Bori Rockshelter, Pantar Island, Eastern Indonesia
Figure 9. Vertical distribution of ceramics from Jareng Bori for sherds over 1 g.
Rapid Design of Top-Performing Metal-Organic Frameworks with Qualitative Representations of Building Blocks
<p>Dataset used in the publication of Rapid Design of Top-Performing Metal-Organic Frameworks with Qualitative Representations of Building Blocks. The paper is published at <a href="https://www.nature.com/articles/s41524-023-01125-1">npj Computational Materials</a> (https://www.nature.com/articles/s41524-023-01125-1)</p> <p> </p> <p><strong>May 19, 2023:</strong></p> <p>- Updated the format in CSV files to be comma-separated.</p> <p>- Updated the building block labels.</p> <p>- Updated README.txt to include additional information.</p>
Revisiting the HO●-initiated oxidation of L-proline amino acid in the aqueous phase – Influence of transition metal ions
<p>The oxidation of L-proline (Pro) by HO<sup>●</sup> radical in water and the influence of transition metal ions on this process has been revisited by using the density functional theory (DFT) method at the M05-2X/6-311++G(3df,3pd)//M05-2X/6-311++G(d,p) level of theory at the temperature of 298.15 K. HO<sup>●</sup>-initiated oxidation of Pro via hydrogen atom transfer (HAT) reactions is more favourable at the b- and g-carbon than at the a- and d-carbon. The total branching ratios are 44.6% and 39.5% for the β- and γ-carbon and 11.5% and 4.2% for the a- and d-carbon, respectively. The overall rate constant at 298.15 K is 6.04 × 10<sup>8</sup> M<sup>-1</sup> s<sup>-1</sup>. In addition, Pro tends to form the stable mono- and bi-dentate complexes with both Fe and Cu ions via the –COO functional group of dipole-salt form. The most stable Cu(II)-Pro complexes have high potential oxidant risks by enhancing the HO<sup>●</sup> radical formation in the presence of reducing agents such as superoxide anion or ascorbate anion. Besides, the complexes of the metal at a high oxidation state, i.e., Fe(III)-Pro and Cu(II)-Pro, show their ability to be oxidized by HO<sup>●</sup> radical via HAT reactions but with a lower rate constant than that of free Pro. Unsurprisingly, the oxidation enhancement is insignificant for SET reactions with almost negligible rate constants. In contrast, the rate constants of SET reactions of low oxidation state complexes (i.e., Fe(II)-Pro and Cu(I)-Pro) are faster than the oxidation rate of free ligands, and thus, these complexes promote the oxidation of Pro.</p>
Dataset - Removal of diclofenac by adsorption process studied in free-base porphyrins Zr-metal organic frameworks (Zr-MOFs)
<p>Dataset for the paper entitled "Removal of diclofenac by adsorption process studied in free-base porphyrins Zr-metal organic frameworks (Zr-MOFs) "</p>
Original data for "Unsupervised Analysis of Optical Imaging Data for the Discovery of Reactivity Patterns in Metal Alloy" article
<p>This upload includes both original and supplementary data for the publication "Unsupervised Analysis of Optical Imaging Data for the Discovery of Reactivity Patterns in Metal Alloy" by R. Li, A. Makogon, T. Galochkina, J-F. Lemineur, F. Kanoufi, and V. Shkirskiy, published in the Small Methods journal. The preprint version of the paper is available on ChemRxiv (<a href="https://doi.org/10.26434/chemrxiv-2023-sgvt0">https://doi.org/10.26434/chemrxiv-2023-sgvt0</a>).</p> <p>The file "Data_processing.zip" contains the original optical image of the interface, maps of film evolution rates in acidic and salt environments, COMSOL data output in acidic and salt environments, as well as a Jupyter Lab file that demonstrates how to process this data.</p> <p>The file "Comparison_of_SEM_images.zip" includes the original SEM images used in the current study and in our previous work (<a href="https://doi.org/10.26434/chemrxiv-2022-rn77b-v3">https://doi.org/10.26434/chemrxiv-2022-rn77b-v3</a>), along with a Jupyter Lab file that illustrates the data processing procedure.</p> <p>The file "Original_data_in_npy_format.zip" contains all original data from SEM/EDX and RM experiments.</p> <p>We recommend opening the Jupyter Lab files in a Python 3 environment. PDF files in the root directory provide outputs of all uploaded Jupyter Lab files.</p>
Distribution of heavy metals in coastal sediments under the influence of multiple factors: A case study from the south coast of an industrialized harbor city (Tangshan, China)
<p><span>This research investigated the spatial distribution of heavy metals, including mercury (Hg), cadmium (Cd), copper (Cu), arsenic (As), nickel (Ni), lead (Pb), chromium (Cr), and zinc (Zn), in surface sediments from the coastal area near to an industrial harbor (the Tangshan Harbor, China) with 161 sediment samples. The results showed that the distribution patterns of Cr, Cu, Zn, Ni, and Pb were similar to each other, high in the northwest, southeast, and southwest regions of the study area and low in the northeast region, which corresponded well with components of sedimental sizes. The uncontaminated specimen proportions for Hg, Cd, Cu, As, Ni, Pb, Cr, and Zn were 6.8%, 4.3%, 31.1%, 28.6%, 42.9%, 64.6%, 44.7%, and 50.3%, respectively. Based on principal component analysis (PCA) and positive matrix factorization (PMF), four distinct sources of pollution were quantitatively attributed, including agricultural activities (22.08%), fossil fuel consumption (24.14%), steel production (29.78%), and natural sources (24.00%). Hg (80.29%), Cd (82.31%) and As (65.33%) in the region's coastal sediments were predominantly contributed by fossil fuel, steel production and agricultural</span> <span>sources, respectively. Cr (40.00%), Cu (43.63%), Ni (47.54%), and Zn (38.98%) were primarily of natural lithogenic origin, while Pb mainly came from the mixed sources of agricultural activities (36.63%), fossil fuel (36.86%), and steel production (34.35%). Multiple factors played important roles in the selective transportation of sedimentary heavy metals, especially sediment properties, and hydrodynamic sorting processes in the study area.</span></p>
Water and Planetary Health Analytics (WAPHA) global metal mines database
<p class="Teaser"><span>An estimated 23 M people live on floodplains affected by potentially dangerous concentrations of toxic waste derived from past and present metal mining activity. We analyze the global dimensions of this hazard, particularly Pb, Zn, Cu and As, using a geo-referenced global database detailing all known metal mining sites, and intact/failed tailings storage facilities. We then use process-based and empirically tested modelling, to produce a global assessment of metal mining contamination in river systems, and the number of human populations, and livestock exposed. Worldwide, metal mines impact 479,200 km of river channels and 164,000 km<sup>2 </sup>of floodplains. The number of people exposed to contamination sourced from long-term discharge of mining waste into rivers is almost fifty times greater than the number directly impacted by tailings dam failures.</span></p>
Raw data of the publication titled "First-row d6 metal complex enables photon upconversion and initiates blue light-dependent polymerization with red light"
<p>Raw data of the publication in Angew. Chem. Int. Ed. titled "First-row d<sup>6</sup> metal complex enables photon upconversion and initiates blue light-dependent polymerization with red light "</p>
Heavy metals in human milk
<p>In this study, the concentrations of six heavy metals in human milk samples collected four weeks after delivery in one of the two largest e-waste recycling areas in China, that is, Taizhou, Zhejiang Province, were measured.</p>
Inductively coupled plasma mass spectrometry of ions released from Ti40Zr10Cu36Pd14 bulk metallic glass
<p>Inductively coupled plasma mass spectrometry (ICP-MS) of ions released from Ti40Zr10Cu36Pd14 bulk metallic glass after incubation in artificial saliva for 1 day, 3 days and 7 day to see how much it releases its ion into the medium. </p>
static water contact angle measurements of Ti40Zr10Cu36Pd14 bulk metallic glass and Ti6Al4V surfaces
<p>static water contact angle measurements of Ti40Zr10Cu36Pd14 bulk metallic glass and Ti6Al4V surfaces: the measurments were first taken place on their etched surface and was repeated after they were incubated in orbital shaker in distilled water at 37˚C and 120 rpm for 48 hours. </p> <p> </p>
cytocompatibility analysis of Ti6Al4V and Ti40Zr10Cu36Pd14 bulk metallic glass
<p>using Alamar blue to quantitatively measure the metabolic activity of fibroblast after 24 h and 48 h of cell culture on Ti6Al4V and Ti40Zr10Cu36Pd14 bulk metallic glass. </p>
High though-put proteomics analysis of dental plaque cultured on Ti40Zr10Cu36Pd14 bulk metallic glass and Ti6Al4V surface
<p>High though-put proteomics analysis of dental plaque cultured on Ti40Zr10Cu36Pd14 bulk metallic glass and Ti6Al4V surface</p>
Metabolic activity of aggregatibacter on Ti-based bulk metallic glass compared with Ti6Al4V
<p>Metabolic activity of aggregatibacter on Ti40Zr10Cu36Pd14 bulk metallic glass compared with T6Al4V (used as a control and therefore all values are considered as 100). </p>
Data from: GTC FOLLOW-UP OBSERVATIONS OF VERY METAL-POOR STAR CANDIDATES FROM DESI
<p>Data for plots in the paper. The dat folders include the spectra shown in Figures 1-2-3, and the file osiris/allende2023_desi_osiris_carbon.mrt gives the data points in Figure 4. The observed stellar spectra come from the Dark Energy Spectroscopic Instrument and the OSIRIS instrument on the 10.4-m Gran Telescopio Canarias. All data are in text files, in Machine Readable Table (MRT) format. See the included Readme.txt file for details.</p>
Geographical Analysis of metal-archives Database
<p>Script and data used to create figures and realize statistical analysis presented in the online paper</p> <p>BEAUGUITTE, Laurent et PECOUT, Hugues. Diffusion globale et fonctionnements locaux: géographies des scènes metal. Mappemonde, 2019, 127. [<a href="https://journals.openedition.org/mappemonde/2017">https://journals.openedition.org/mappemonde/2017</a>]<br> <br> The zip folder contains:<br> - R script<br> - shapefiles (FDC folder)<br> - metal-archives database (DATA folder)<br> - relational data regarding two NSBM circles (graph folder).</p>
Ages and metallicities of stellar clusters using S-PLUS narrow-band integrated photometry: the Small Magellanic Cloud
<p>These are the final photometric quantities measured in the work "Ages and metallicities of stellar clusters using S-PLUS narrow-band integrated photometry: the Small Magellanic Cloud". The raw S-PLUS images are available upon request to the corresponding author. Nevertheless, the complete S-PLUS data will become publicly available alongside the next data release, scheduled for 2023.</p>
Implications of Ga Promotion and Metal-Oxide Interface from Tailored PtGa Propane Dehydrogenation Catalysts Supported on Carbon
<p>From comparison of carbon-supported Pt and PtGa propane dehydrogenation catalysts, the role of Ga promotion is elucidated via electron microscopy showing amorphous PtGa nanoparticles, hence, being responsible for Pt-site isolation, which drives catalytic stability and selectivity.</p>
Data supporting publication: Metallic and All-Dielectric Metasurfaces Sustaining Displacement-Mediated Bound States in the Continuum
<p>This repository includes the data corresponding to the figures shown in the journal article entitled "Metallic and All-Dielectric Metasurfaces Sustaining Displacement-Mediated Bound States in the Continuum", published in Advanced Optical Materials. </p>
Statistical analysis of the Metal Archives Database
<p>Data, shapefile and R script used to create figures and realize statistical analysis presented in the online paper</p> <p>Laurent Beauguitte et Hugues Pecout, « Les mondes du metal d’après l’Encylopedia Metallum », <em>Volume!</em>, 15(2), 2019, URL : <a href="http://journals.openedition.org/volume/6519">http://journals.openedition.org/volume/6519</a> ; DOI : 10.4000/volume.6519.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.