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1,491 results for “Ione”
Dependence of MeV TOF SIMS secondary molecular ion yield from phthalocyanine blue on primary ion stopping power
<p>Time-of-flight Secondary Ion Mass Spectrometry (TOF SIMS) is a well-established mass spectrometry technique used for the chemical analysis of both organic and inorganic materials. In the last ten years, many advances have been made to improve the yield of secondary molecular ions, especially those desorbed from the surfaces of organic samples. For that, cluster ion beams with keV energies for the excitation were mostly used. Alternatively, single-ion beams with MeV energies can be applied, as done in the present work. It is well known that secondary molecular/ion yield depends strongly on the primary ion stopping power, but the nature of this dependence is not completely clear. Therefore, in the present work secondary ion yield from the phthalocyanine blue (C<sub>32</sub>H<sub>16</sub>CuN<sub>8</sub>, organic pigment) was measured for the various combinations of ion masses, energies and charge states. Measured values were compared with the existing models for ion sputtering. An increase of the secondary yield with the primary ion energy, electronic stopping, velocity and charge state was found for different types of primary ions. Although this general behavior is valid for all primary ions, there is no single parameter that can describe the measured results for all primary ions at once. </p> <p>- measured (calibrated) spectra are uploaded </p> <p> </p> <p> </p>
Imaging of Organic Samples with Megaelectron Volt Time-of-Flight Secondary Ion Mass Spectrometry Capillary Microprobe
<p>Time-of-flight Secondary Ion Mass Spectrometry (TOF SIMS) with MeV primary ions offers a fine balance between secondary ion yield for molecules in the mass range from 100 to 1000 Da and beam spot size, both of which are critical for imaging applications of organic samples. Using conically shaped glass capillaries with an exit diameter of a few micrometers, a high energy heavy primary beam can be collimated to less than 10 μm. In this work, imaging capabilities of such a setup are presented for some organic samples (leucine-evaporated mesh, fly wing section, ink deposited on paper). Lateral resolution measurement and molecular distributions of selected mass peaks are shown. The negative influence of the beam halo, an unavoidable characteristic of primary beam collimation with a conical capillary, is also discussed. A new start trigger for TOF measurements based on the detection of secondary electrons released by the primary ion is presented. This method is applicable for a continuous primary ion beam, and for thick targets that are not transparent to the primary ion beam. The solution preserves the good mass resolution of the thin target setup, where the detection of primary ions with a PIN diode is used for a start trigger, reduces the background, and enables a wide range of samples to be analyzed.</p>
BeMAGIC_Correlation between structural modifications induced by ion irradiation and the magneto-ionic rates
<p>BeMAGIC ITN (GA861145)_Correlation between structural modifications induced by ion irradiation and the magneto-ionic rates. Results from SPIN-ION, UAB, KIT.</p>
Data of paper Controlling the interfacial reactions and environment of rare-earth ions in thin oxide films towards wafer-scalable quantum technologies
<p>Data of the figures in the paper :</p> <p>N. Harada, A. Tallaire, D. Serrano, A. Seyeux, P. Marcus, X. Portier, C. Labbé, P. Goldner, and A. Ferrier, <em>Controlling the Interfacial Reactions and Environment of Rare-Earth Ions in Thin Oxide Films towards Wafer-Scalable Quantum Technologies</em>, Mater. Adv. <strong>3</strong>, 300 (2022). doi: 10.1039/D1MA00753J</p>
IODP Expedition 374 Ion chromatography
<p>Cation and anion concentration in interstitial water samples was measured by ion chromatography using a conductivity detector. Cation analytes include calcium, magnesium, potassium, and sodium. Anion analytes include chloride, sulfate, and bromide.</p>
WACCM-X Fe ions
<p>This is the hourly WACCM-X Fe+ profile in Feb/July at 65-505km sampled over 80S/80N used for Christon et al. paper entitled "Measurement of ~180 keV Fe+ in the Ring Current/Plasmasphere Boundary".</p> <p> </p> <p>For the WACCM-X (version 2_1_3) with three metals (Fe, Na, Mg), please cite:<br> Wu, J., Feng, W., Liu, H.-L., Xue, X., Marsh, D. R., and Plane, J. M. C.:<br> Self-consistent global transport of metallic ions with WACCM-X, Atmos. Chem. Phys., 21,<br> 15619-15630, https://doi.org/10.5194/acp-21-15619-2021, 2021.</p>
Molecular sidebands for radioactive ion beam extraction
<p>Summary of potential radioactive molecular ion beams seen and predicted from ISOL targets and ion sources including data compiled from [1] and [2]. Some of the molecules (e.g. the transition metal carbonyl or oxide compounds or COTe) are conceptual and would require ion source developments. The actinides other than U are predicted to form compounds with a variety of valence states and require beam developments. Plasma or electron bombardment ion sources may cause molecular fragmentation and change availability of molecular sidebands.</p> <p>[1] U. Köster et al., <em>NIMB </em><strong>266</strong>, 10.1016/J.NIMB.2008.05.152 (2008)</p> <p>[2] J. Ballof, <em>Radioactive Molecular Beams at CERN-ISOLDE,</em> PhD thesis, JGU Mainz (2021)</p>
Mining minerals and critical raw materials from bittern: Understanding metal ions fate in saltwork ponds
<p>Seawater represents a potential resource for raw materials extraction. Although NaCl is the most representative mineral<br> extracted other valuable compounds such as Mg, Li, Sr, Rb and B and elements at trace level (Cs, Co, In, Sc, Ga and<br> Ge) are also contained in this “liquid mine”. Most of them are considered as Critical Raw Materials by the European<br> Union. Solar saltworks, providing concentration factors of up-to 20 to 40, offer a perfect platform for the development<br> of minerals and metal recovery schemes taking benefit of the concentration and purification achieved along the evaporation<br> saltwork ponds.<br> However, the geochemistry of these elements in this environment has not been yet thoroughly evaluated. Their knowledge<br> could enable the deployment of technologies capable to achieve the recovery of valuable minerals. The high ionic<br> strengths expected (0.5–7 mol/kg) and the chemical complexity of the solutions imply that only numerical geochemical<br> codes, as PHREEQC, and the use of Pitzer model to estimate the activity coefficients of the different species in solution<br> can be adopted to provide valuable description of the systems.<br> In the present work, for the first time, PHREEQC Pitzer code database was extended to include the target minor and<br> trace elements using Trapani saltworks (Sicily, Italy) as a case study system. The model was able to predict: i) the purity<br> in halite and the major impurities contained, mainly Ca,Mgand sulphate species; ii) the fate of minor components as B,<br> Sr, Cs, Co, Ge and Ga along the evaporation ponds. The results obtained pose a fundamental step in critical raw materials<br> mining from seawater brine, for process intensification and combination with desalination.</p>
Dataset for "A comprehensive model for pickup ion formation at the Moon"
<p>Dataset for "A comprehensive model for pickup ion formation at the Moon", submitted to J. Geophys. Res.: Planets for publication. The dataset consists of in-situ measurements of ion fluxes and densities around the Moon as observed by NASA's ARTEMIS mission, as described in the manuscript.</p>
Influence of ion mobility on the redox and catalytic properties of Cu ions in zeolites
<ul> <li><strong>Data type</strong>: Experimental spectroscopic measurements and related elaboration from Figure 7</li> <li>Files are with filename extensions: <strong>txt</strong></li> <li>Information on <strong>origin of the data</strong>:</li> <li>Normalized Cu K-edge XANES of a Cu-CHA sample (Si/Al = 5, Cu/Al = 0.3), collected during heating from RT to 350 °C under a He flow. In situ data were collected at the BM23 beamline of the European Synchrotron Radiation Facility (ESRF, Grenoble, France) in a Microtomo reactor cell</li> <li>Cu L<sub>3</sub>-edge TEY NEXAFS spectra of of a Cu-CHA sample (Si/Al = 5, Cu/Al = 0.3), collected during heating from RT to 350 °C under a He flow. In situ data were collected at the APE-HE beamline of Elettra Sincrotrone Trieste (Basovizza, Italy) in a dedicated ambient pressure cell.</li> <li><strong>Information on</strong>:</li> <li>specialized abbreviations: <strong>XANES</strong> – X-ray absorption near edge structure, <strong>TEY</strong> - Total Electron Yield, <strong>NEXAFS</strong> – near edge X-ray absorption fine structure, <strong>CHA</strong> - chabazite</li> </ul>
Data set for "The ion-ion recombination coefficient α: comparison of temperature- and pressure-dependent parameterisations for the troposphere and stratosphere"
<p>The uploaded data are related to the publication "The ion–ion recombination coefficient <span class="math-tex">\(\alpha\)</span>: comparison of temperature- and pressure-dependent parameterisations for the troposphere and stratosphere" in Atmospheric Chemistry and Physics (ACP). The data are the same as shown in the figures of the publication. The naming of the uploaded files indicates the figure (e.g., "Fig_2" indicates Figure 2 of the publication). </p>
IODP Expedition 352 Ion chromatography
<p>Cation and anion concentration in interstitial water samples was measured by ion chromatography using a conductivity detector. Cation analytes include calcium, magnesium, potassium, and sodium. Anion analytes include chloride, sulfate, and bromide.</p>
IODP Expedition 351 Ion chromatography
<p>Cation and anion concentration in interstitial water samples was measured by ion chromatography using a conductivity detector. Cation analytes include calcium, magnesium, potassium, and sodium. Anion analytes include chloride, sulfate, and bromide.</p>
Data associated to the manuscript "Co-Ion Desorption as the Main Charging Mechanism in Metallic 1T-MoS2 Supercapacitors"
<p>Supporting data for the article:</p> <p>Co-Ion Desorption as the Main Charging Mechanism in Metallic 1T-MoS<sub>2</sub> Supercapacitors</p> <p>Sheng Bi, Salanne Mathieu, <em>ACS Nano</em>, 2022</p> <p>https://pubs.acs.org/doi/10.1021/acsnano.2c07272</p> <p>The folders <em>slab </em>and <em>slit</em> contain typical MetalWalls input files used to perform the simulations for two electrode geometries.</p>
Datasets used for developing sulfuric acid-water neutral and ion-induced particle formation parameterizations
<p>Supporting data for "New parameterizations for neutral and ion-induced sulfuric acid-water particle formation in nucleation and kinetic regimes" by Määttänen et al. (2017). A README file describing the datasets is included.</p> <p>Five datasets used for developing sulfuric acid-water neutral and ion-induced particle formation parameterizations, published in Määttänen et al. 2017, JGR Atmospheres (submitted) and at https://doi.org/10.5281/zenodo.1044366.</p> <p>Two datasets that have been used to produce Fig 8. of the manuscript: these datasets contain global model output of nucleation rates and total aerosol number concentrations.</p>
Research Data - Deformation Localisation in Ion-Irradiated Fe and Fe10Cr
<p>Research data and associated processing and plotting scripts for the article:</p> <p>Song <em>et al.,</em> 'Deformation localisation in ion-irradiated Fe and Fe10Cr', <em>Journal of Nuclear Materials</em>, 155104, 2024</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.jnucmat.2024.155104" target="_blank" rel="noreferrer noopener"><span>https://doi.org/10.1016/j.jnucmat.2024.155104</span></a></p>
Source data files for manuscript "Closed Magnetic Topology in the Venusian Magnetotail and Ion Escape at Venus"
<p>The zip file contains source data files for all figures in the manuscript "Closed Magnetic Topology in the Venusian Magnetotail and Ion Escape at Venus" published in Nature Communications. DOI: 10.1038/s41467-024-50480-0.</p>
Molecular Dynamics Simulations of Hydrophilic (QTY) Potassium Ion Channels in Water
<p>You can find here the molecular dynamics (MD) trajectories of QTY proteins in water performed for the "Computational engineering of water-soluble potassium ion channels through QTY transformation" manuscript. Please cite our paper and the previous Zenodo dataset when referring to or using this data. If you have any questions, please contact me (Eva Smorodina) at ribes.ev@gmail.com. Thank you!<br><br>Smorodina, E. (2024). Molecular Dynamics Simulations of Hydrophobic (cryo-EM and Native) and Hydrophilic (QTY) Potassium Ion Channels [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10592842</p>
Piezo1 ion channels are capable of conformational signaling
<p>Piezo1 is a mechanically activated ion channel that senses forces with short latency and high sensitivity. Piezos undergo large conformational changes, induce far-reaching deformation onto the membrane, and modulate the function of two-pore potassium (K<sub>2P</sub>) channels. Taken together, this led us to hypothesize that Piezos may be able to signal their conformational state to other nearby proteins. Here, we use chemical control to acutely restrict Piezo1 conformational flexibility and show that Piezo1 conformational changes, but not ion permeation through it, are required for modulating the K<sub>2P</sub> channel TREK1. Super-resolution imaging and stochastic simulations further reveal that both channels do not co-localize, which implies that modulation is not mediated through direct binding interactions; however, at high Piezo1 densities, most TREK1 channels are within the predicted Piezo1 membrane footprint, suggesting the footprint may underlie conformational signaling. We speculate that physiological roles originally attributed to Piezo1 ionotropic function could, alternatively, involve conformational signaling.</p>
Dataset: Ionis Pharmaceuticals, Inc. (IONS) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
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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.