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30 results for “Solute Transport”
Data: "Solute transport in bounded porous media (...)" by Sole-Mari et al. (2020)
<p>Data corresponding to the results of the Monte Carlo set of simulations described in: "Solute transport in bounded porous media characterized by Generalized Sub-Gaussian log-conductivity distributions". Please send questions to guillem.sole.mari@outlook.com.</p>
A closer look: High-resolution pore-scale simulations of solute transport and mixing through porous media columns
<p>This dataset contains the results of fluid flow (Navier-Stokes) and solute transport (Advection-Diffusion) simulations within columns of granular media generated by virtual gravitational settling of spherical grains. The experiments comprise three media with different degrees of grain-size variability; a range of grain-Peclet numbers is explored. See the homonymous research paper by Sole-Mari et al. (2022, Water Resources Research) for more information.</p> <p>Grains.zip: Positions and radii of the spherical grains for each value of grain-size variability sigma (Matlab's .mat format).</p> <p>ResultsCoarse.zip: Coarse-scale data presented in the aforementioned WRR paper (Matlab's .mat format).</p> <p>Link to the full micro-scale dataset: (soon available)</p> <p>We thankfully acknowledge the computer resources at MareNostrum and the technical support provided by the Barcelona Supercomputing Center (AECT-2019-3-0014).</p> <p> </p>
A semi-analytical solution for heat transport in rock with parallel fractures and a heat source in both fracture and matrix
<p>In this study, we propose a two-dimensional semi-analytical solution framework based on a Green’s function approach for a flexible heat source definition, including source dimensions, energy delivery strength and duration, and the presence of a heat source in the matrix and/or fracture. The solution fully accounts for heat conduction, advection, dispersion and transient heat exchange between the mobile and immobile phases in a system of parallel fractures. The solution having a strip heat source extending from a fracture into the matrix indicates that one-dimensional heat conduction in the matrix underestimates and overestimates temperature responses at early and later times, respectively.</p> <p>The dataset is for the figures 2-7 in the journal paper. </p>
The impact of ice sheet geometry on meltwater ingress and reactive solute transport in sedimentary basins
<p> We investigate the effect of ice sheet geometry on groundwater flow patterns and meltwater ingress in a hypothetical sedimentary basin. The simulation results indicate that meltwater ingress is much greater in 3D domains with a relatively narrow ice sheet extent compared to a wide ice sheet, or a simplified 2D model. In high permeability units (HPUs), the simulated meltwater penetration depth can reach up to 750 m in 3D domains compared to 400 m in a comparable 2D domain. In low permeability units (LPUs), very limited meltwater penetration occurs, indicating that ice sheet geometry and model dimensionality do not substantially affect water flow in these units. A conservative tracer, with a source located at a depth of 500 meters in both HPUs and LPUs, illustrates that solutes can be transported to greater depths in HPUs for a narrow ice lobe scenario, in comparison to a wide ice sheet or the 2D approach. Tracer transport in LPUs is unaffected by ice sheet geometry. Similarly, simulation results indicate that the ingress of dissolved oxygen (O<sub>2</sub>) into HPUs is most substantial below a narrow ice lobe, while O<sub>2</sub> ingress into LPUs is not affected by ice sheet geometry. The numerical experiments indicate that 3D analysis will give more comprehensive results for flow patterns and reactive solute transport subjected to glaciation/deglaciation cycles in the case of a narrow ice lobe, but also suggest that a 2D approach might provide an adequate representation for the case of a relatively wide ice sheet.</p>
Surfactant Transport on Evolving Surfaces - Solutions of Space-Time Trace Finite Element Methods visualized.
<p>Videos of numerical experiments in the article "An accurate and robust Eulerian finite element method for partial differential equations on evolving surfaces" by H. Sass and A. Reusken. Surfactant transport on evolving surfaces with high curvatures and topological singularities is illustrated.</p>
Example meshes for 'Human brain solute transport quantified by glymphatic MRI-informed biophysics during sleep and sleep deprivation'
<p>Example meshes for 'Human brain solute transport quantified by glymphatic MRI-informed biophysics during sleep and sleep deprivation'</p> <p>The meshes contain DTI. To read the mesh to FEniCS, see e.g., <a href="https://github.com/bzapf/braintransport/blob/24ba4e37a3d6fadb37c249ca7f717a7355f48f30/optimal_velocity/postprocess_phi.py#L12">here </a>.</p> <p>Find the simulation codes for the manuscript here:</p> <p><a href="https://github.com/bzapf/braintransport">https://github.com/bzapf/braintransport</a></p>
The impact of ice sheet geometry on meltwater ingress and reactive solute transport in sedimentary basins
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Data from: Solute Production and Transport Processes in Chinese Monsoonal Rivers: Implications for Global Climate Change
<p>Concentration-discharge (C-Q) relationships provide new insights into solute production processes. Temporal sampling and analyses are needed to investigate the chemical weathering behaviors and reduce the estimation errors of fluxes. But few studies have been done in Asian monsoonal rivers, which play an important role in global carbon cycle. We analyzed the dissolved solutes of Three largest rivers in China. Datong and Qingxi in Changjiang River were selected to represent the midterm and outlet of the Changjiang River. Lijin was selected as the outlet of the Yellow River. We analyzed the major ions, which can represent the chemical weathering index. Our study may help deepen the understanding of chemical weathering and solutes fluxes.</p>
A semi-analytical solution for heat transport in rock with parallel fractures and a heat source in both fracture and matrix
<p>In this study, we propose a two-dimensional semi-analytical solution framework based on a Green’s function approach for a flexible heat source definition, including the heat source dimensions, energy delivery strength and duration, and the presence of a heat source in the matrix and/or fracture. The solution fully accounts for heat conduction, advection, dispersion, and transient heat exchange between the fracture fluid and rock matrix in a system of parallel fractures. </p> <p>The dataset is for the figures 2-9 in the journal paper. </p> <p>The computation code is available to generate the temperature in rock matrix or fracture using Matlab. </p>
Competitive control of multiscale aquifer heterogeneity on solute transport in an alluvial aquifer
<p>Here, we provide the dataset for the publication "<strong>Competitive control of multiscale aquifer heterogeneity on solute transport</strong> <strong>in an alluvial aquifer</strong>" submitted to Journal of Hydrology for peer-review.</p>
Dataset for the Figure 2 in manuscript "Numerical study of coupled water and vapour flow, heat transfer, and solute transport in variably-saturated deformable soil during freeze-thaw cycles"
<p>This dataset includes the gathered experimental measurements of a freezing test by Wu (2017) for the model's verification shown in Figure 2 of the manuscript entitled 'Numerical study of coupled water and vapour flow, heat transfer, and solute transport in variably-saturated deformable soil during freeze-thaw cycles'' by Huang, X., and Rudolph, D.L.</p>
Inverse design of pore wall chemistry to control solute transport and selectivity
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Data from: Solute production and transport processes in Chinese monsoonal rivers: Implications for global climate change
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Extracted dataset for: "Experiment and modeling of concentration-dependent diffusion in a solution with dual transport-phase flow for paper-based sensing"
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rOMT processed data: Cerebral amyloid angiopathy is associated with glymphatic transport reduction and time-delayed solute drainage along the neck arteries
<p>This dataset contains the speed map and Péclet map data processed by regularized optimal mass transport method (<a href="https://zenodo.org/record/5809635#.YczuJy2ZNBw">https://zenodo.org/record/5809635#.YczuJy2ZNBw</a>, <a href="https://github.com/xinan-nancy-chen/rOMT">https://github.com/xinan-nancy-chen/rOMT</a>).</p> <p>All files are in nifty format. This dataset contains in total 55 rat cases which are divided by age (3-month, 6-month and 12-month) and status of health ("WT" for wild-type and "CAA" for those who have developed Cerebral Amyloid Angiopathy).</p>
Investigating solute transport and reaction using a mechanistically coupled geochemical and geophysical modeling approach
<p>This repository encompasses the acquired data for the five experiments of reactive percolation in a column with geoelectrical monitoring. The input and output files of the reactive transport simulations are also given. In addition, five movies of the reaction rate evolving with time are also part of this dataset. The files are:</p> <ul> <li><strong>physicochemical_data.xlsx</strong>: the ionic concentrations, alkalinity, pH, and electrical conductivity from the collected water samples, the pH monitored at two locations in the column, and the inlet and outlet water conductivity and temperature. Porosity and formation factor calculated from the measured calcium concentration are also given.</li> <li><strong>sp-data-exp1-exp2-exp3.xlsx</strong>: the self-potential (SP) method has been used to monitor the reactive percolation for experiments 1, 2, and 3.</li> <li><strong>sip-data-exp4.xlsx </strong>and <strong>sip-data-exp5.xlsx</strong>: the spectral induced polarization (SIP) method has been used to monitor the reactive percolation for experiments 4 and 5.</li> <li><strong>output_exp</strong><em><strong>X</strong></em><strong>.zip</strong>: compressed folders of all output files for the reactive transport simulations using Crunchflow software.</li> <li><strong>1DcalciteFT_ex<em>X</em>.in</strong>: input files for the reactive transport simulation using CrnchFlow software.</li> <li><strong>OldRifleDatabaseLiLi_nicole.dbs</strong>: database for the reactive transport simulation using CrnchFlow software.</li> <li><strong>video-rate-exp</strong><em><strong>X</strong></em><strong>.avi</strong>: movies of the reaction rate along the column and evolving with time for the complete duration of each experiment.</li> </ul>
Modeling water flow and solute transport in unsaturated soils using physics-informed neural networks trained with geoelectrical data
<p>Numerical codes and results for the article: Modeling water flow and solute transport in unsaturated soils using physics-informed neural networks trained with geoelectrical data</p>
Data for Sleep cycle-dependent vascular dynamics and the predicted effects on perivascular cerebrospinal fluid flow and solute transport
<p>Datasets containing derived data and results used by code in: https://github.com/AlexandraVallet/PVSflow for "Sleep cycle-dependent vascular dynamics and the predicted effects on perivascular cerebrospinal fluid flow and solute transport", Bojarskaite et al. 2023. Please see github for instructions. </p>
A numerical exploration of hyporheic zone solute transport behavior estimated from electrical resistivity inversions
<p>1). We run the Comsol model (ER3D_cs300ws6ds20_Zxl1.m) with an electrical push-pull loop, and then the voltage at every electrode of each time is printed to model_name.out and resistivity to model_name.ro. </p> <p>2). superposition.m is used to create final voltage results for later use in R2 inversions.</p> <p>3). postproc_c_dual.m is used to create the pixel breakthrough curves of the simulated results.</p> <p>4). plot_c_comsol.m read the resistivity result from step (1), convert the resistivity to bulk EC, and plot the bulk EC contour map. </p> <p>5). protocal_pc.m is used to take the voltages, add some random noise, and make the input files and batch scripts for R2.</p> <p>6). runr2.bat and runr2_TL.bat are used to generate inverted bulk EC.</p> <p>7). plot_C_r2_dual.m is used to plot the inversed bulk EC.</p>
Effects of periodic fluctuation of water level on solute transport in seasonal lakes in Poyang floodplain system
<p>The purpose of this study is to investigate the solute transport in seasonal lakes within floodplain systems by means of laboratory experiments and numerical simulations.</p>
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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.
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DANDI Archive for NWB datasets
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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.