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271 results for “porous”
Figure 1: EDL structure for p-Si-TOWARD THE PHYSICAL BASIS OF COMPLEX SYSTEMS: DIELECTRIC ANALYSIS OF POROUS SILICON NANOCHANNELS IN THE ELECTRICAL DOUBLE LAYER LENGTH RANGE
<p>Figure 1: EDL structure for p-Si (SCL negative charged,²F < ²FR )/aqueous<br> solvent interface. The electrostatic potential and charged atoms in solvent<br> distributions vs the distance z from the wall.</p>
Figure 3: The dependencies ² 00 (log !¿¾). The values are normalized at ² 00 max-TOWARD THE PHYSICAL BASIS OF COMPLEX SYSTEMS: DIELECTRIC ANALYSIS OF POROUS SILICON NANOCHANNELS IN THE ELECTRICAL DOUBLE LAYER LENGTH RANGE
<p>Fig.3. The conductivity relaxation occurs at<br> lowing frequencies. The form of the ²<br> 00<br> (!) = f(²<br> 0<br> (!)) diagrams changes from<br> a vertical line (a), to any deformate semicircles (b, c, d) having the angle to<br> real axe below ¼<br> 2 , Fig.4. This behaviour denotes that the EDL is not an ideally<br> capacitor, but also is not a disipative region, depending both on the EDL<br> thickness and the frequency range of the applied ¯eld [7]. The composition<br> (by thickness) of the EDL determines essentially the dielectric response of the<br> interface system. Compared with experimental results, the dielectric pro¯le<br> of this higher length scales model, can provides a more complet description of<br> the solvent properties for a given electrode.</p>
Figure 2: The dependencies ² 0 (log !¿¾). The values are normalized at ² 0 max-TOWARD THE PHYSICAL BASIS OF COMPLEX SYSTEMS: DIELECTRIC ANALYSIS OF POROUS SILICON NANOCHANNELS IN THE ELECTRICAL DOUBLE LAYER LENGTH RANGE
<p>The results of the model are shown that the frequency-dependences ²<br> 0<br> (log(!¿¾))<br> in Fig.2, ²<br> 00(log(!¿¾)) in Fig.3 and ²<br> 00<br> (²<br> 0<br> )T in Fig.4, where ²<br> 0<br> , ²<br> 00<br> are the real and<br> imaginary part, respectively, from (7), having the ¸D<br> ¸ ratio as parameter.</p>
Raw data for the article entitled ''Evaluation of in-plane architecture in a thermo-electrochemical cell with nanostructured and porous Sb:SnO2 electrodes''
<p>Raw data for the plots in the article entitled ''Evaluation of in-plane architecture in a thermo-electrochemical cell with nanostructured and porous Sb:SnO2 electrodes''.</p>
Evaluating porous protein microcrystals as a capture scaffold for nucleic acids
<p>Curated data for manuscript titled "Evaluating porous protein microcrystals as a capture scaffold for nucleic acids," by A.A. Jones, M. Masri, K. Horak, and C. D. Snow.</p>
Enhancement of bubble transport in porous electrodes and catalysts
<p>data for the publication "Enhancement of bubble transport in porous electrodes and catalysts" in <em>J. Chem. Phys.</em> 160, 194706 (2024)</p>
Suppressing viscous fingering in structured porous media
<p>Finger-like protrusions that form along fluid−fluid displacement fronts in porous media are often excited by hydrodynamic instability<br> when low-viscosity fluids displace high-viscosity resident fluids. Such interfacial instabilities are undesirable in many natural and engineered displacement processes.We report a phenomenon whereby gradual and monotonic variation of pore sizes along the<br> front path suppresses viscous fingering during immiscible displacement, that seemingly contradicts conventional expectation of enhanced instability with pore size variability. Experiments and pore-scale numerical simulations were combined with an analytical<br> model for the characteristics of displacement front morphology as a function of the pore size gradient. Our results suggest that the<br> gradual reduction of pore sizes act to restrain viscous fingering for a predictable range of flow conditions (as anticipated by gradient<br> percolation theory). The study provide insights into ways for suppressing unwanted interfacial instabilities in porous media, and provides design principles for new engineered porous media such as exchange columns, fabric, paper, and membranes with respect to their desired immiscible displacement behavior.</p>
Investigation of Azo-COP-2 as a photo-responsive low-energy CO2 adsorbent and porous filler in mixed matrix membranes for CO2/N2 separation
<p>Dataset supporting publication. All raw data for figures is included in the Excel file, and the full high-resolution SEM images are included in this repository.</p> <p>A preprint of the manuscript is available from <a href="https://doi.org/10.26434/chemrxiv.7593902">https://doi.org/10.26434/chemrxiv.7593902</a> </p> <p>The published paper is: Siyao Li, Nicholaus Prasetya, and Bradley P Ladewig, <em>Ind. Eng. Chem. Res.</em>, Just Accepted Manuscript<br> DOI: <a href="https://doi.org/10.1021/acs.iecr.9b00762">https://doi.org/10.1021/acs.iecr.9b00762</a></p>
Research Data for the Journal Article: Hypercrosslinked porous polymer as catalyst for efficient biodiesel production
Open the record for dataset details and reuse information.
Dataset for the publicaion "Cleaning strategies for 3D-printed porous scaffolds used for bone regeneration fabricated via ceramic vat photopolymerization"
<p>Dataset of publicaion "Cleaning strategies for 3D-printed porous scaffolds used for bone regeneration fabricated via ceramic vat photopolymerization".</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.ceramint.2024.10.160" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.ceramint.2024.10.160</a></p> <p>Dataset includes results of TGA analysis, viscosity measurements and mechnaical properties. </p>
Figure 14. Histology underlying porous surface patterns. A in Growth and textural ageing in long bones of the American alligator Alligator mississippiensis (Crocodylia: Alligatoridae)
Figure 14. Histology underlying porous surface patterns. A, zone of fibrolamellar bone underlying etched porous surface (FWC 40723, tibia section c). B, fibrolamellar zone with large radial channels (arrow) underlying surface with overprinted dotted and etched porosity (FWC 40723, femur section c). C, longitudinal channels underlying radiating fibrous region, with arrows indicating channels intersecting and recently incorporated into the bone surface (FWC LGS4, femur section d). D, channels in varying orientations underlying dotted porous surface (FWC LGS1, femur section c). E, zone of lamellar bone underlying dotted porous surface (FWC 40583, humerus section c). Scale bars = 230 µm.
Porous single crystal unit-cell simulation database for ductile fracture by void growth and coalescence
<p>Ductile fracture through void growth to coalescence occurs at the grain scale in numerous metallic alloys encountered in engineering applications. In order to perform mechanical homogenization of porous single crystals, a database of porous single crystal unit-cell simulation results has been gathered through Finite Element Modeling and Fast-Fourrier Transform simulations, respectively performed on Z-set and Amitex_FFTP. In these simulations, a cubic unit-cell with a unique central spherical void undergo axisymmetric mechanical loading. Mechanical simulations are performed within finite strain theory. Input parameters of interest are stress triaxiality, crystallographic orientation, initial porosity and strain hardening law type; results include macroscopic stress, macroscopic deformation gradient, porosity, void aspect ratio, ligament size and cell aspect ratio.</p>
Aerodynamic characterisation of porous fairings : pressure drop and Laser Doppler Velocimetry measurements
<p>Aviation has become a mass transportation industry, and all prospective studies foresee growth in this sector. Among the challenges, noise in the vicinity of airports has gone from a marginal annoyance to a real public health concern. To address this problem, as well as others such as fuel consumption, aircraft manufacturers are considering radically new aircraft architectures that could enter service quickly. In the meantime, however, the noise of traditional aircraft must be reduced significantly. Aircraft noise, during takeoff and landing, results primarily from a combination of (i) engine noise, which is generated by the fan and jet, and (ii) airframe noise, primarily due to the landing gear (LG) and high lift devices (HLD), the latter including slats and trailing edge flaps, which are deployed at low speeds to increase lift. During takeoff, engine noise remains dominant, while on approach and landing, engines operate at low speeds (typically 50% of N1), and airframe noise becomes a significant contributor, especially for newer aircraft equipped with latest generation turbofans. Its mitigation is therefore of primary interest.<br> However, due to the strong integration constraints imposed by other disciplines than acoustics on components such as LGs and HLDs, the development of noise reduction technologies (NRT) on these airframe components has been limited. This lack of breakthroughs is also due to the complexity of flow physics, and thus our still limited knowledge of airframe noise generation mechanisms. The noise of the landing gear, slats and flaps has been studied on a real and reduced scale, mainly on the basis of experimental means. The maturity of numerical simulations now allows to study the mechanisms of the noise sources on various complex configurations. Moreover, numerical simulation methods can be sufficiently accurate to predict the noise generated by such configurations. In order to take the next step in the maturity of numerical prediction, these NIRs must be accurately evaluated and modeled. Experimental data based on academic configurations are therefore needed to validate the new tools and numerical models. One promising NRT is the use of a fairing in front of the landing gear to reduce the noise of this system. The present study aims at collecting an experimental database (pressure drop and turbulence characteristics) of several fairing solutions in order to have validation test cases for CFD simulation and thus develop new models for such complex geometries. The fairing samples are thus tested on the "Acoustic and Aerothermal Bench" (B2A), by measuring the pressure drop of each sample and the flow field by Laser Doppler Velocimetry (LDV). The experimental methodology will be presented first. The database will then be described. Some technical validations will also be proposed on the basis of a comparison with the literature.</p>
On the reversible sodium plating/stripping reaction in porous SiCN(O) ceramic: a feasibility study. Supporting Information
<p>Supporting Information of the article: On the reversible sodium plating/stripping reaction in porous SiCN(O) ceramic: a feasibility study</p>
Porous Invariants for Linear Systems: POROUS Tool and experimental data
<p>POROUS Tool and experimental data for Porous Invariants for Linear Systems.</p> <p>The code is maintained at https://github.com/davidjpurser/porous-tool</p> <p>Contains:</p> <ul> <li>the code in porous-tool-May2023.zip</li> <li>the results of experiements run on a Dell PowerEdge M620 with 2x Intel Xeon E5-2667 v2 CPUs and 256GB RAM in <ul> <li>document-journal.csv as a summary file, listing each generated instance type, file name, success status, and timing information. Used as input to analysis.py.</li> <li>journal-data.zip containing individual randomly generated instances and their output</li> </ul> </li> </ul> <p>Preliminary results were presented in the paper Porous Invariants. CAV 2021 by Engel Lefaucheux, Joël Ouaknine, David Purser and James Worrell.</p>
Dataset for Additive Manufacturing of Porous Biominerals
<p>This dataset contains results of rheology, SEM, polarized microscopic and X-ray tomography pictures,XRD results and mechanical testing. There are also results of EDX mapping and 2D scanning synchrotron XRD maps.</p>
Porous tension-cup lysimeter depths and soil water chemistry from 9 Hillslope Project sites in Macon County, North Carolina, within the Upper Little Tennessee River Basin
Porous tension-cup lysimeters were installed at 9 sites throughout Macon County beginning in 2011. Sites represented a gradient of land use, including relatively undisturbed forests, valley bottomlands in agriculture, and mountain developments. Eighteen lysimeters were placed at each site - 9 were shallow lysimeters located in the A horizon and 9 were deep lysimeters located in the B horizon. Collections were made every other week and samples were composited monthly for chemistry. The depths of the lysimeters were noted.
Data set related to the manuscript "Ionic liquids under confinement: From systematic variations of the ion and pore sizes towards an understanding of structure and dynamics in complex porous carbons"
<p>Graphical files in the agr format for all the figures in the main text of the manuscript entitled "Ionic liquids under confinement: From systematic variations of the ion and pore sizes towards an understanding of structure and dynamics in complex porous carbons" (10.1021/acsami.9b16740). Example of input file for one of the systems simulated.</p>
Three‐dimensional reconstruction of porous polymer films from FIB‐SEM nanotomography data using random forests
<p>Dataset and code used in M. Röding, et al, "Three-dimensional reconstruction of porous polymer films from FIB-SEM nanotomography data using random forests", published in Journal of Microscopy, 2020. In this work, we develop a segmentation method for focused ion beam scanning electron microscopy (FIB-SEM) data acquired by volumetric imaging of porous polymer films made from ethyl cellulose and hydroxypropyl cellulose (EC/HPC) polymer blends. This type of polymer films are used for controlled release applications. Based on manual segmentation of a fraction of the data, a random forest classifier is trained and applied to the full data set. Here, raw data, manual segmentations, and the Matlab code used for all steps in the analysis are supplied.</p>
Hybrid nanoplasmonic porous biomaterial scaffold for liquid biopsy diagnostics using extracellular vesicles: data and media
<p>Raw datasets and media accompanying the manuscript: <strong>Hybrid nanoplasmonic porous biomaterial scaffold for liquid biopsy diagnostics using extracellular vesicles</strong>, published in ACS Sensors</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.
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.