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385 results for “Tension”
Dataset of gas permeability and flux simulation of poplar tension wood
<p>The datasets generated during the study <Relationship between pore structure and gas permeability in poplar (<em>Populus deltoides</em> CL.'55/65') tension wood>.</p> <p> </p>
Quantifying tensions in cosmological parameters: Interpreting the DES evidence ratio (supplementary inference products)
<p>These are the nested sampling inference products and input files that were used to compute results for <a href="https://arxiv.org/abs/1902.04029">arXiv:1902.04029</a> and <a href="https://arxiv.org/abs/1903.06682">arXiv:1903.06682</a></p> <p>An example plotting script and plots from the papers are included to demonstrate usage.</p> <p>Filename conventions:</p> <p>runs_default: default prior widths</p> <p>runs_narrow: narrowest prior widths</p> <p>runs_medium: intermediate prior widths</p> <p>planck: Planck 2018 baseline likelihoods</p> <p>SH0ES: Riess et al 2018 Hubble likelihood</p> <p>BAO: BOSS DR12 baryonic acoustic oscillations + redshift space distortion likelihood</p> <p>DES: Dark Energy Survey Y1 baseline</p> <p>Software used:</p> <p>CosmoChord <a href="https://github.com/williamjameshandley/CosmoChord/tree/e2f7020bd9d4254230097037fb6ebaee95a3d558">https://github.com/williamjameshandley/CosmoChord/tree/e2f7020bd9d4254230097037fb6ebaee95a3d558</a></p>
Data from: Interfacial tension hysteresis of eutectic gallium-indium
<p>When in a pristine state, gallium and its alloys have the largest interfacial tensions of any liquid at room temperature. Nonetheless, applying as little as 0.8 V of electric potential across eutectic gallium indium (EGaIn) placed within aqueous NaOH (or other electrolyte) solution will cause the metal to behave as if its interfacial tension is near zero. The mechanism behind this phenomenon has remained poorly understood because NaOH dissolves the oxide species, making it difficult to directly measure the concentration, thickness, or chemical composition of the film that forms at the interface. In addition, the oxide layers formed are atomically-thin. Here, we present a suite of techniques which allow us to simultaneously measure both electrical and interfacial properties as a function of applied electric potential, allowing for new insights into the mechanisms which cause the dramatic liquid metal, oxidation, and interfacial tension decrease in interfacial tension. A key discovery from this work is that the interfacial tension displays hysteresis while lowering the applied potential. We combine these observations with electrochemical impedance spectroscopy to evaluate how these changes in interfacial tension arise from chemical, electrical, and mechanical changes on the interface, and close with ideas for how to build a free energy model to predict these changes from first principles.</p>
Data for "Synapses without Tension Fail to Fire in an In Vitro Network of Hippocampal Neurons."
<p>Neurons in the brain communicate with each other at their synapses. It has long been understood that this communication occurs through biochemical processes. Here, we reveal a previously unrecognized paradigm wherein mechanical tension in neurons is essential for communication. Using <em>in vitro</em> rat hippocampal neurons, we find that (1) neurons become tout/tensed after forming synapses resulting in a contractile neural network, and (2) without this contractility, neurons fail to fire. To measure time evolution of network contractility in 3D (<em>not</em> 2D) extracellular matrix, we developed an ultra-sensitive force sensor with 1 nN resolution. We employed Multi-Electrode Array (MEA) and iGluSnFR, a glutamate sensor, to quantify neuronal firing at the network and at the single synapse scale, respectively. When neuron contractility is relaxed, both techniques show significantly reduced firing. Firing resumes when contractility is restored. This discovery highlights the essential contribution of neural contractility in fundamental brain functions and has implications for our understanding of neuronal physiology.</p>
On the Consequences of Intraoperative Release vs Over-tensioning of the Posterior Cruciate Ligament in Total Knee Arthroplasty
<p>This dataset contains data derived from musculoskeletal modeling to investigate the effects of posterior cruciate ligament (PCL) tensioning in total knee arthroplasty (TKA). The findings indicate minimal differences in knee kinematics and kinetics for PCL releases of up to 10%, regardless of implant conformity. However, over-tensioning the PCL significantly increases joint overload, potentially compromising implant longevity. These results suggest that, in cases where precise intraoperative PCL tensioning cannot be reliably achieved, a slightly looser PCL may be preferable to mitigate complications associated with excessive tension.</p> <p>The structure of the data is detailed in the accompanying <code>Data Description.txt</code> file, which is provided alongside the dataset (<code>JRSI_Data.mat</code>).</p>
Density, surface tension, kinematic viscosity, distillation curve, and initial boiling point data of diesel-n-butanol and diesel-ABE blends
<p>This dataset contains measurement data for density, surface tension, kinematic viscosity, distillation curve, and initial boiling point for n-butanol and ABE (acetone, n-butanol, and ethanol in a volume ratio of 3:6:1) blended with standard diesel fuel. Properties of blends were evaluated in terms of temperature and biofuel volume fraction. For a detailed description of the measurements and further information, please see the published paper in Fuel journal (<a href="https://doi.org/10.1016/j.fuel.2021.122909">https://doi.org/10.1016/j.fuel.2021.122909</a>).</p>
Effect of heterogeneous substrate adhesivity of follower cells on speed and tension profile of leader cells in primary keratocyte collective cell migration
<p><span>In single keratocyte motility, membrane tension is reported to be high at cell-fronts and believed to establish front coherence. To understand role of membrane mechanics in collective cell migration, we study membrane height fluctuations in cell sheets from fish scales using interference reflection microscopy (IRM). We report the monolayer to have cells lacking substrate adhesion and show that such "non-sticky" cells can form bridges between leader cells and far-away follower cells. Do such interactions alter motility and membrane mechanics in such leaders? We find non-significant, but reduced speed for leaders with "non-sticky" followers in comparison to other leaders. Cells show high phenotypic variability in their membrane fluctuation tension profiles. On average, this tension is found to be lower at cell fronts than the mid-section. However, leaders with non-sticky followers are more prone to display higher tension at their front and have a negative correlation between cell speed and front-mid tension difference. We, thus, conclude that intracellular tension gradients are heterogeneous in cell sheets and substrate adhesivity of followers can control the coupling of the gradient to cell speed.</span></p>
Images and data accompanying article: Remarkable response of hollow thermoplastic microspheres-elastomer matrix composites in uniaxial tension.
<p><strong>Images and data accompanying article:<br> Remarkable response of hollow thermoplastic microspheres-elastomer matrix composites in uniaxial tension.*</strong><br> <em>By Michel Coret, Erwan Verron & Pierre Rublon</em><br> <strong>(<a href="http://hal.archives-ouvertes.fr/hal-03480982">https://hal.archives-ouvertes.fr/hal-03480982</a>)</strong></p> <p><br> <strong>Abstract of the article</strong><br> In the last few years, the mechanical response of hollow thermoplastic micro-spheres-elastomer matrix composites has been investigated. The large majority of the studies focuses on their compressive properties and particularly on the stress-strain response. In the present paper, large strain uniaxial tension experiments are conducted on thermoplastic microspheres filled polyurethane elastomer. Six volume fractions of microspheres are considered. Thanks to a two-camera setup and digital image correlation measurements, the volumetric response of the materials is extensively analyzed. As a major result, the remarkable volumetric behaviour is highlighted: the hydrostatic pressure vs. volume change curves admit several extrema that may be read as the macroscopic signature of the complex microstructural phenomena involved during deformation. Moreover, it is shown that the size of the volumetric loading-unloading hysteresis loop is directly related to the volume fraction of microspheres in the materials.<br> Experimental test methodology is described within the article. The objective of the deposit is to share data.</p> <p><strong>Description of the deposit</strong><br> <strong>Objectives:</strong></p> <p>The objective of this deposit is to share all the data needed to retrieve the results presented in the article (<a href="http://hal.archives-ouvertes.fr/hal-03480982">https://hal.archives-ouvertes.fr/hal-03480982</a>). This deposit do not explain any experimental methodology, that can be found in the article.</p> <p><strong>Data overview:</strong></p> <ol> <li>The images taken during the tests (raw data)</li> <li>Force and displacement measured by the tensile machine (raw data).</li> <li>Surface strain field on face and lateral sides of the tensile specimen (obtain by Digital Image Correlation)</li> <li>Averaged and filtered</li> </ol> <p><strong>Data description:</strong><br> 1. Image directories:<strong> "YY/MM/DD_poro_xx_spec_nn"</strong></p> <ul> <li> YY/MM/DD: date of the test</li> <li> xx: specimen porosity (can be one of these values [0, 05, 10, 15, 20, 25] in %)</li> <li> nn: Specimen number</li> </ul> <p> In each directory you will find:</p> <ul> <li> YY/MM/DD_poro_xx_spec_nn-aaaaa_0.tif (face side *aaaaa* image)</li> <li> YY/MM/DD_poro_xx_spec_nn-bbbbb_1.tif (lateral side *bbbbb* image</li> <li> YY/MM/DD_poro_xx_spec_nn.csv (Synchronized analogic data with images) <ul> <li>Column A: Image n°</li> <li>Columns B & C: Image file name</li> <li>Columns D & E: Timestamp</li> <li>Columns F & G: Analog data (Volts)</li> <li>Column H: Position of the jack (millimeter)</li> <li>Column I: Measured force (N)</li> </ul> </li> </ul> <p>2. Scalar data directory: <strong>Data_csv/</strong></p> <ul> <li><strong>DIC</strong>: strain average results from digital image correlation on face side (axis xy) and lateral side (axis yz) <ul> <li>Column A: Image n°</li> <li>Column B, C, D (Hencky strains): exx, eyy & exy</li> <li>Column E, F (Hencky eigen strains): e1 & e2</li> </ul> </li> </ul> <p> </p> <ul> <li><strong>Machine</strong>: displacement and force from tensile machine for each image <ul> <li>Column A: Image n°</li> <li>Columns B & C: Image file name</li> <li>Columns D & E: Timestamp</li> <li>Columns F & G: Analog data (Volts)</li> <li>Column H: Position of the jack (millimeter)</li> <li>Column I: Measured force (N)</li> </ul> </li> </ul> <p> </p> <ul> <li><strong>Post</strong>: Average + smoothed data for each porosities <ul> <li>Column A: Longitudinal stretch <span class="math-tex">\(\lambda\)</span></li> <li>Column B: Nominal stress P</li> <li>Column C: Lateral stretch ratio <span class="math-tex">\(\lambda_w=\lambda_t\)</span><br> </li> </ul> </li> </ul>
Data for publication "A unified surface tension model for multi-component salt, organic and surfactant solutions"
<p>This repository contains the data of the publication:</p> <p>Title: "A unified surface tension model for multi-component<br>salt, organic and surfactant solutions"<br>Authors: Judith Kleinheins, Claudia Marcolli, Cari Dutcher, Nadia Shardt<br>Date: 2024</p>
Tension clamp X-ray CT data of non-crimp fabric based fibre composite under fatigue loading
<p>Tension clamp X-ray CT fatigue testing data published with data in brief: </p> <p>Jespersen, K. M., Glud, J. A., Zangenberg, J., Hosoi, A., Kawada, H., & Mikkelsen, L. P. (2018). <em>Ex-situ X-ray computed tomography, tension clamp and in-situ transilluminated white light imaging data of non-crimp fabric based fibre composite under fatigue loading. Data in Brief.</em></p> <p>as a part of the below journal paper.</p> <p>Jespersen, K. M., Glud, J. A., Zangenberg, J., Hosoi, A., Kawada, H., & Mikkelsen, L. P. (2018). Uncovering the fatigue damage initiation and progression in uni-directional non-crimp fabric reinforced polyester composite. Composites Part A.</p> <p>If using the data, please refer to one of the two.</p>
Automated Model Discovery for Tensional Homeostasis: Constitutive Machine Learning in Growth and Remodeling (Source code and data)
<p>This dataset contains</p> <ul> <li>the source code</li> <li>the data and examples</li> <li>the material subroutine with examples of uniaxial strain and stress</li> </ul> <p>of the inelastic Constitutive Artificial Neural Network (iCANN) enhanced by the concept of homeostatic surfaces to discover tensional homeostasis.</p> <p>The corresponding publication is:</p> <p>Holthusen, H., Brepols, T., Linka, K., & Kuhl, E..<em> </em></p> <p><em>Automated Model Discovery for Tensional Homeostasis: Constitutive Machine Learning in Growth and Remodeling.</em></p> <p> </p> <p><strong>Standalone_Materialroutine</strong></p> <ul> <li>00_Materialroutine: Contains the material subroutine implemented in FORTRAN</li> <li>01_uniaxial_strain: Example of the material subroutine in a uniaxial strain driven manner</li> <li>02_uniaxial_stress: Example of the material subroutine in a uniaxial stress driven manner</li> </ul> <p> </p> <p><strong>TensorFlow</strong></p> <ul> <li> <p>iCANN:</p> <ul> <li> <p>01_Biax/biax_l1: Keras/TensorFlow implementation of the iCANN. Example of the cross specimen with L1 (Lasso) regularization</p> </li> <li> <p>01_Biax/biax_l2: Keras/TensorFlow implementation of the iCANN. Example of the cross specimen with L2 (ridge) regularization</p> </li> <li> <p>02_Uniax/uniax_l1: Keras/TensorFlow implementation of the iCANN. Example of the stripe specimen with L1 (Lasso) regularization</p> </li> <li>02_Uniax/uniax_l1: Keras/TensorFlow implementation of the iCANN. Example of the stripe specimen with L2 (ridge) regularization</li> </ul> </li> <li> <p>iCANN_ABS_activation: Same four examples as above, however, with the absolute value activation function</p> </li> <li> <p>installed_packages: File containing a list of installed Python modules used to implement the iCANN</p> </li> </ul> <p>The TensorFlow implementations in all 01_Biax/ and 02_Uniax/ sub-directories are the same.</p> <p>The implementation in iCANN_ABS_activation is different with respect to the activation functions of the pseudo potential.</p> <p> </p> <p>The experimental data for the cross and stripe specimen are taken from the literature:</p> <p>Eichinger, J. F., Paukner, D., Szafron, J. M., Aydin, R. C., Humphrey, J. D., & Cyron, C. J. (2020).</p> <p>Computer-controlled biaxial bioreactor for investigating cell-mediated homeostasis in tissue equivalents. <em>Journal of biomechanical engineering</em>, <em>142</em>(7), 071011.</p> <p><a href="https://doi.org/10.1115/1.4046201">https://doi.org/10.1115/1.4046201</a></p>
Data for publication "The surface tension and CCN activation of sea spray aerosol particles"
<p>This repository contains the data of the publication:</p> <p>Title: "The surface tension and CCN activation of sea spray aerosol<br>particles"<br>Authors: Judith Kleinheins, Nadia Shardt, Ulrike Lohmann, and Claudia Marcolli<br>Date: 2024</p> <p>Version v2: updated data (Scrit_results.json) after first round of paper review.</p>
Tension zone trapped by exogenous cline: analysis of a narrow hybrid zone between two parapatric Oxytropis species (Fabaceae)
<p>Hybrid zones have been widely highlighted for their interest in understanding evolutionary processes. It is generally accepted that hybrid zones can be maintained in a balance between dispersal and selection. However, the selective forces can either be endogenous (i.e., genetic incompatibilities between parental taxa) or exogenous (i.e., parental taxa are adapted to different environments).</p> <p>In this study, we evaluated these alternatives and determined the maintenance of a narrow hybrid zone between parapatric distributed <em>Oxytropis diversifolia</em> and <em>O. leptophylla</em> in Nei Mongol, China. For 507 individuals sampled from two populations in the hybrid zone, 12 <em>O. diversifolia</em> populations and five <em>O. leptophylla</em> populations, we measured leaf-morphological characteristics, quantified genetic structure using 11 nuclear microsatellite loci and five chloroplast DNA intergenic regions, collected micro- and macrohabitat data, and conducted geographical cline analysis.</p> <p>We found that the two species differed in leaf morphology, and putative hybrids showed either intermediacy or a bias to <em>O. diversifolia</em>. Parental taxa formed two genetically distinct clusters, while populations in the hybrid zone consisted of both parental forms and various admixed individuals, exhibiting a bimodal pattern. The hybrid zone was coupled to ecological transitions of both microhabitat (i.e., the slope) and macroclimatic conditions. However, the genetic clines were significantly narrower than the environmental cline.</p> <p>Our results indicate that endogenous selection can be primarily responsible for maintaining the hybrid zone, while local adaptation accounts for the position of the zone. We further suggest the probable outcome of hybridization could be introgression.</p>
Data for publication "Surface tension models for binary aqueous solutions: A review and intercomparison"
<p>This repository contains the data of the publication:</p> <p>Title: "Surface tension models for binary aqueous solutions: A review and intercomparison"<br> Authors: Judith Kleinheins, Nadia Shardt, Manuella el Haber, Corinne Ferronato, Barbara Nozière, Thomas Peter, and Claudia Marcolli<br> Date: 2023</p> <p>Abstract: The liquid–air surface tension of aqueous solutions is a fundamental quantity in multi-phase thermodynamics and fluid dynamics and thus relevant in many scientific and engineering fields. Various models have been proposed for its quantitative description. This Perspective gives an overview of the most popular models and their ability to reproduce experimental data. In addition, we propose a new model based on the logistic function which reproduces sigmoidal curve shapes (Sigmoid model) to<br> empirically fit experimental surface tension data. All models were tested on ten binary aqueous solutions of electrolytes and organic molecules. The surface tension of weakly surface active substances is well reproduced by all models. In contrast, only a few models successfully modelled the surface tension of aqueous solutions with strongly surface-active substances. For substances with a solubility limit, usually no experimental data is available for the surface tension of supersaturated solutions and the pure liquid solute. We discuss ways in which these can be estimated and emphasize the need for further research. The newly developed Sigmoid model best reproduces the surface tension of all tested solutions and can be recommended as a model for a broad range of substances and over the entire concentration range.</p>
The heterogeneous rheological properties of rock mass caused the formation of deep tension fractures
<p>Date for the paper —The heterogeneous rheological properties of rock mass caused the formation of deep tension fractures.</p>
Capsular Tension Rings in Intraocular Lens Rotation
ClinicalTrials.gov study NCT04436198. IPD Sharing: NO. Countries: 1. Publications: 9.
Restoring the Anatomic Tension Relationship of the Long Head of the Biceps During Tenodesis
ClinicalTrials.gov study NCT06571695. IPD Sharing: NO. Countries: 1. Publications: 7.
Metoclopramide Versus Ketorolac for Tension-type Headache
ClinicalTrials.gov study NCT01011673. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Performance of Tension Free Vaginal Mesh (Prolift) Versus Conventional Vaginal Prolapse Surgery in Recurrent Prolapse.
ClinicalTrials.gov study NCT00372190. IPD Sharing: NO. Countries: 1. Publications: 3.
Initial Graft Tension and ACL Surgery
ClinicalTrials.gov study NCT00434837. IPD Sharing: YES. Countries: 1. Publications: 28.
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