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222 results for “silicate”
Data sharing of: Sulfur inventory of the young lunar mantle constrained by experimental sulfide saturation of Chang'e-5 mare basalts and a new sulfur solubility model for silicate melts in equilibrium with sulfides of variable metal–sulfur ratio
<p>Data sharing of: Sulfur inventory of the young lunar mantle constrained by experimental sulfide saturation of Chang’e-5 mare basalts and a new sulfur solubility model for silicate melts in equilibrium with sulfides of variable metal–sulfur ratio</p>
Biogenic silicate concentration in sea water samples, collected from the underway supply in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition.
<p><strong>Dataset abstract</strong></p> <p>Biogenic Silicate (Bsi) concentration (µmol/L) in seawater data. Water samples were collected from the underway seawater supply, filtered on board and then analysed by flow injection following appropriate digestion.</p> <p>This data supports chemical and biological oceanography studies conducted during the Antarctic Circumnavigation Expedition.</p> <p><strong>Dataset contents</strong></p> <ul> <li>ace_biogenic_silicate_concentration_in_seawater_underway.csv, data, comma-separated values</li> <li>ace_biogenic_silicate_concentration_in_seawater_underway_visual_summary.png, metadata, portable network graphics</li> <li>data_file_header.txt, metadata, text format</li> <li>README.txt, metadata, text format</li> </ul>
Supplementary Data - Hadean isotopic fractionation of xenon retained in deep silicates - by Rzeplinski et al. Nature 2022
<p>Supplementary data (mass spectrometry detailed results) of Hadean isotopic fractionation of xenon retained in deep silicates, Nature 2022.</p>
FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34).
Raw data from: Differentiating siliceous particulate matter in the diets of mammalian herbivores
<p class="MsoNormal"><span>1. Silica is crucial to terrestrial plant life and geochemical cycling on Earth. It is also implicated in the evolution of mammalian teeth, but there is debate over which type of siliceous particle has exerted the strongest selective pressure on tooth morphology.</span></p> <p class="MsoNormal"><span>2. </span><span>Debate revolves around the amorphous silica bodies (phytoliths) in plants and forms of siliceous grit––i.e., crystalline quartz (sand, soil, dust)––on plant surfaces. The problem is that conventional measures of silica often quantify both particle types simultaneously.</span></p> <p class="MsoNormal"><span>3. </span><span>Here we describe a protocol that relies on heavy-liquid flotation to separate and quantify siliceous particulate matter in the diets of herbivores. The method is reproducible and well-suited to detecting species- or population-level differences in silica ingestion. In addition, we detected meaningful variation within the digestive tracts of cows, an outcome that supports the premise of ruminal fluid 'washing' of siliceous grit.</span></p> <p class="MsoNormal"><span>4. </span><span>We used bootstrap resampling to estimate the sample sizes needed to compare species, populations, or individuals in space and time. We found that a minimum sample of 12 individuals is necessary if the species is a browser or as many as 55 if the species is a grazer, which are more variable. But a sample size of 20 is adequate for detecting statistical differences. We conclude by suggesting that our protocol for differentiating and quantifying silica holds promise for testing competing hypotheses on the evolution of dental traits.</span></p>
Supplementary Data for "The phosphorus budget of the silicate Earth based on an updated estimate of P/Nd ratio".
<p>Supplementary data tables for Ma et al. (2022) associated with the paper entitled "The phosphorus budget of the silicate Earth based on an updated estimate of P/Nd ratio".</p>
Experimental Data for understanding melting and phase relations at the Mercury silicate mantle compositions as a function of temperature at 7 GPa
<p><span>High pressure-temperature experiments were performed at 7 GPa and 1700-2100 C using a cubic press to understand melting relations at the core-mantle boundary on Mercury. Mer8 was in the stability field of orthopyroxene whereas Mer15 first crystallized olivine. With cooling, both compositions reached a cotectic surface with olivine + orthopyroxene, followed by garnet and clinopyroxene. A sulfide phase (FeS + MgCaFeS) was present in all experiments.</span></p>
Dataset for 'Aluminum and iron effects on the electrical conductivity of the dense hydrous magnesium silicate phase E'
<p>This dataset include the raw data of impedance spectra of the 5 samples reported in 'Aluminum and iron effects on the electrical conductivity of the dense hydrous magnesium silicate phase E'. Reading the raw data may need the software 'CView' (http://www.scribner.com).</p> <p>The mossbauer spectra of two samples are also included.</p>
Supporting data for "Neural Network-Based Interatomic Potential for the Study of Thermal and Mechanical Properties of Siliceous Zeolites"
Open the record for dataset details and reuse information.
Data Archives - LAFORET et al - Silicate-sulfide interaction within quenched melts of space weathered Ryugu grains
<p>Contains STEM-EDXS raw data used in the paper Laforet et al. submitted in Meteoritics and Planetary Science</p> <p> </p>
The Fate of Nitrogen during Early Silicate Differentiation of Rocky Bodies Constrained by Experimental Mineral-Melt Partitioning
Open the record for dataset details and reuse information.
Mg isotope and element data in silicate component for core NHX3 from upwelling area off the Vietnam coast
<p>Mg isotope and element data in silicate component for core NHX3 from upwelling area off the Vietnam coast</p>
The Fate of Nitrogen during Early Silicate Differentiation of Rocky Bodies Constrained by Experimental Mineral-Melt Partitioning
Open the record for dataset details and reuse information.
Adhesion of silicate impact melts on impact glasses of Chang'e-5 regolith
<p><span>Reference data of components in Chang'e-5 regolith, and geochemical data gathered for five studied Chang'e-5 impact glass particles and surface microscopic silicate melts.</span></p>
Figure 7 in Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges
Figure 7. Silicon isotope data of sponge spicules, free-swimming diatoms and seawater. A. Silicon isotope (δ30Si) composition for sponges, diatoms and seawater of Deception Island. B. Comparison of our data for δ30Si/ δ29Si in sponges, diatoms and seawater from Deception Island, with values reported in previous datasets of sponges, diatoms and seawater (Hendry et al., 2010; Wille et al., 2010).
Figure 5. Vesicles with silica-like granules within sponge cells. A in Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges
Figure 5. Vesicles with silica-like granules within sponge cells. A, an amoeboid sponge cell (spc) in P. areolatus showing a cytoplasm packed with vesicles and an ingested diatom (di) within a large digestive vesicle. Note that three different granule types were identified by microanalysis in the section of this species: silica granules (si), and lead granules (Pb). B–C, highly vesiculated, amoeboid sponge cell in He. pilosus. Note the silica-like granules (si) first present within vesicles and later incorporated within the cytoplasm. D, amoeboid sponge cell in P. areolatus showing an ingested diatom (di) and silica-like granules (si).
Figure 6 in Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges
Figure 6. Microanalysis of the content of silica-like vesicles, sponge spicules and diatoms within the sponge tissues. A, sponge cell, probably an amoebocyte (c), of P. areolatus showing accumulation of silica-like granules in the cytoplasm (SiV). B, sclerocyte-like cell (c) of M. tridens showing accumulation of silica-granules in vesicles (SiV). C, diatom (di) engulfed by a sponge cell in M. tridens. D, sclerocyte (sc) of P. areolatus making spicules (sp). E, elemental profile of Figure 6A. F, elemental profile of Figure 6B. G, elemental profile of Figure 6C. H, elemental profile of Figure 6D. Note that the EDX probe measurements were taken on the white circles marked in the images.
Figure 4 in Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges
Figure 4. Diatoms (di) ingested by amoeboid sponge cells (spc). A–D, sponge cells (spc) digesting diatoms (di) in P. areolatus. Note the large lipid (li) droplets present within diatoms (di) and later accumulated in the cytoplasm of sponge cells (spc). E–F, sponge cells (spc) digesting diatoms (di) in K. variolosa. Note the silica-like (si) granules being dissolved from the diatom frustule and the well-developed Golgi apparatus (g).
Silicon-29 NMR Experimental Datasets from Silicon-29 Echo Train Coherence Lifetimes and Geminal J-Couplings in Network Modified Silicate Glasses
<p>Silicon-29 Phase-Incremented Echo-Train Acquisition Nuclear Magnetic Resonance datasets that are analyzed to obtain the data in the figures of the paper "Silicon-29 Echo Train Coherence Lifetimes and Geminal <sup>2</sup>J-Couplings in Network Modified Silicate Glasses." </p> <p>Details of the csdf dataset format are given in <a href="https://doi.org/10.1371/journal.pone.0225953"><em>PLOS ONE,</em> 15(1): e0225953 (2020)</a>, "Core Scientific Dataset Model: A lightweight and portable model and file format for multi-dimensional scientific data," D. Srivastava, T. Vosegaard, D. Massiot, and P.J. Grandinetti. The data within csdf files can be accessed with the Python package <a href="https://csdmpy.readthedocs.io/en/stable">csdmpy</a>, or other CSDM-compliant software.</p>
FIGURE 34 in Late Eocene siliceous sponge fauna of southern Australia: reconstruction based on loose spicules record
FIGURE 34. Spicules of sponges of Hexactinellida; A–D—Different types of dermal pinnular hexactines, family Rossellidae (order Lyssacinosida); E—Dermal pinnular hexactine (fragment), probably of family Rossellidae (order Lyssacinosida); F–I—Dermal pentactines of unknown hexactinellid sponges; J—Anchorate basalium of unknown hexactinellid sponge; K, L—Dermal or atrial hexactines of Hexactinosa; M—Fragment of dictyonal skeleton of Hexactinosa; N—Fragment of umbrella-shaped spicule of Rossella, family Rossellidae (order Lyssacinosida).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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