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1,819 results for “Experimental data”
Supplementary data: Na2.4Al0.4Mn2.6O7 anionic redox cathode material for sodium ion batteries- a combined experimental and theoretical approach to elucidate its charge storage mechanism
<p>This data repository contains the output files of density-functional theory (DFT) calculations that were used for the paper "Na2.4Al0.4Mn2.6O7 anionic redox cathode material for sodium ion batteries- a combined experimental and theoretical approach to elucidate its charge storage mechanism". </p>
Experimental Data for the paper Training AI to Recognize Realizable Gauss diagrams: the Same Instances Confound AI and Human Mathematicians
<p>This upload contains supplementary materials for the paper <br> Training AI to Recognize Realizable Gauss diagrams: the Same Instances Confound AI and Human Mathematicians, by Abdullah Khan, Alexei Lisitsa and Alexei Vernitski, to appear in Proceedings of ICAART 2022 (14th International Conference on Agents and Artificial Intelligence, 3-5 February, 2022), SCITEPRESS. </p>
Even when you know it is a placebo, you experience less sadness: First evidence from an experimental open-label placebo investigation (Open Data and Open Materials)
<p><strong>Open Data and Open Materials of: Even when you know it is a placebo, you experience less sadness: First evidence from an experimental open-label placebo investigation. <em>Journal of Affective Disorders</em>. </strong></p> <p><em>Background:</em> Recent studies demonstrate substantial effects of deceptive placebo on experimentally induced sadness,<br> even on autonomic activity. Whether deception is necessary, remains to be elucidated. We investigated the<br> effect of an open-label placebo (OLP) treatment, i.e. an openly administered placebo delivered with a convincing<br> rationale for its sadness-protecting effect.<br> <em>Methods:</em> Eighty-four healthy females were randomized to an OLP group or a no-treatment control group. All<br> participants received the same detailed information about the OLP effect, only the OLP group received an OLP<br> nasal spray. Before and after the OLP intervention, participants underwent a sad mood induction procedure<br> combining self-deprecating statements (Velten's method) and sad music. Sadness was assessed by the Positive<br> and Negative Affect Schedule (PANAS-X). Autonomic activity was measured continuously.<br> <em>Results:</em> Participants in the OLP group reported a significantly attenuated increase in sadness upon mood induction<br> and less sadness after induction compared to the control group (d = 0.79). Regardless of intervention,<br> heart rate decreased during mood inductions with a more pronounced deceleration in the second mood induction.<br> <em>Limitations:</em> Generalizability is limited due to the selective sample and the reliance on an experimentally controlled<br> mood induction.<br> <em>Conclusion:</em> OLP treatment had a beneficial effect on perceived sadness, at least at the subjective level. Hence,<br> deception may not necessarily be required for placebos to modulate experienced sad mood. Investigating the<br> beneficial effects of OLP in (sub-)clinical samples would seem a promising and required next step towards a<br> clinical use of placebo-associated positive treatment expectations.</p>
Experimental data from Dietler et al. (2022) "Signal Transduction in Light-Oxygen-Voltage Receptors Lacking the Active-Site Glutamine"
<p>This .xlsx file contains the experimental data underpinning the research reported in Dietler et al. (2022) "Signal Transduction in Light-Oxygen-Voltage Receptors Lacking the Active-Site Glutamine"</p>
Raw experimental data and matlab codes for the paper "State-dependent driving : A route to non-equilibrium stationary states"
<p>Raw experimental data and matlab codes used for numerical simulation in the paper - "State-dependent driving : A route to non-equilibrium stationary states". The data and codes to generate figures 2, 3 and 5 are available in the folders named "Fig 2", "Fig 3" and "Fig 5" respectively.</p>
Long-wave infrared super-resolution wide-field microscopy by sum-frequency generation - experimental data
<p>Experimental Data for "Long-wave infrared super-resolution wide-field microscopy by sum-frequency generation", under consideration at APL, preprint: <a href="https://doi.org/10.48550/arXiv.2112.08112">https://doi.org/10.48550/arXiv.2112.08112</a></p> <p>Files:</p> <p>readme.txt: explanation of the content<br> SFGmicroscope.h5: microscope data<br> APL_test_script.m: matlab test script generating the relevant figures from the data</p> <p>For more information, please contact Richarda Niemann (niemann@fhi-berlin.mpg.de) or Alex Paarmann (alexander.paarmann@fhi-berlin.mpg.de).</p>
Experimental and numerical calculation data of contact stiffness/Surface roughness/HPT
<p>Understanding the dynamic condition of the interface between a railway wheel and rail is important to reduce the risks and consider the effectiveness of countermeasures for tribological problems. Traditionally the difficulty in obtaining accurate non-destructive interfacial measurements has hindered systematic experimental investigations. Recently an ultrasound reflectometry technique has been developed as a direct observation method of a rolling-sliding interface, however the topography dependence under the high contact pressures in a wheel-rail contact has not been clarified. For this reason, a novel in-situ measurement of the contact stiffness using ultrasound reflectometry was carried out for three different levels of roughness. A contact pressure equivalent to that in a wheel-rail interface was achieved by using a high-pressure torsion test approach. The dynamic change of contact stiffness with slip was measured using ultrasound and the influence of roughness was investigated. The measured changes were validated using a newly developed numerical simulation, and mechanisms to explain the observed behaviour were proposed in terms of fracture and plastic deformation of the asperity bonds. These findings could help in understanding the traction characteristics for different roughness conditions and also assist in understanding damage mechanisms better, such as wear and rolling contact fatigue.</p>
Data from: Do experimental pH increases alter the structure and function of a lowland tropical stream?
<p>Disturbances can alter the structure and function of ecosystems. In stream ecosystems, changes in discharge and physicochemistry at short, intermediate, and long recurrence intervals can affect food webs and ecosystem processes. In this paper, we compare pH regimes in streams at La Selva Biological Station, Costa Rica, where episodic acidification frequency across the stream network varies widely due to buffering from inputs of bicarbonate-rich inter-basin groundwater. To examine the effects of acidification on ecosystem structure and function, we experimentally increased the buffering capacity of a headwater stream reach, and compared it to an unbuffered upstream reach. We compared these reaches to a naturally buffered and unbuffered reaches of a second headwater stream. We quantified ecosystem structural (macroinvertebrate assemblages on leaf litter and coarse woody debris), and functional responses (leaf litter and coarse woody debris decomposition rates, and growth rates of a focal insect taxon (Diptera: Chironomidae)). Non-metric multidimensional scaling and analysis of similarity revealed that macroinvertebrate assemblages were relatively homogenous across the four study reaches, although the naturally buffered reach was the most dissimilar. Ecosystem function, as measured by chironomid growth rates, was greater in the naturally buffered reach, while decomposition rates did not differ across the four reaches. Our results indicate that biological assemblages are adapted to pH regimes of frequently acidified stream reaches. Our experiment informs the effects on structure and function at short time scales in streams that experience moderate acidification, but larger magnitude acidification events in response to hydroclimatic change, as projected under climate change scenarios, may induce stronger responses in streams.</p>
Data from: Experimental analysis of organ decay and pH gradients within a carcass and the implications for phosphatization of soft tissues
<p>Replacement of soft-tissues by calcium phosphate yields spectacular fossils. Decay experiments have shown that pH is a major control on the precipitation of calcium phosphate and tissue replication: for this to occur pH must fall below the carbonic acid dissociation constant (pH 6.38). However, in the fossil record, phosphatisation is highly selective - some internal organs, such as muscles, stomachs, and intestines, appear to preferentially phosphatise while other organs seldomly phosphatise. The reasons for this are unclear but one hypothesis is that, during decay, organs create distinct chemical microenvironments and only some fall below the critical pH threshold for mineralization to occur. Here, we present a novel investigation using microelectrodes that records fluctuating dynamic spatial and temporal pH gradients inside of organs within a carcass in real time. Our experiments demonstrate that within a decaying carcass, organ-specific microenvironments are not generated. Rather, a pervasive pH environment forms within the body cavity (i.e. the coelom) which persists until integumentary failure. With no evidence to support the development of organ-specific microenvironments during decay other factors must control organ phosphatisation. We propose it is tissue histology that plays an important role in selective phosphatisation. Tissues with high phosphate content (and those rich in collagen) are most likely to phosphatise. Internal organs that have low tissue-bound phosphate, including the integuments of the stomach and intestine, only phosphatise when associated with ingested phosphate-rich organic matter. Identifying the driver behind selective phosphatisation may provide insights into other highly selective modes of soft-tissue preservation i.e. pyritization.</p>
Experimental J-NSE, SAXS and SANS data of MBP
<p>Experimental J-NSE, SAXS and SANS data of myelin basic protein (MBP in different concentrations of guanidinium chloride (GndCl). Two protein concentrations have been measured: 0.5 w/v (5 mg/mL) abbreviated as 0p5w/v and 5 w/v (50 mg/mL) abbreviated as 5w/v. </p>
Data from: Loss-of-heterozygosity facilitates a fitness valley crossing in experimentally evolved multicellular yeast
<p>These data sets are generated to investigate a simple evolutionary landscape that arises from underdominance at a single locus where the fitness valley consists of only one less-fit genotype. We make use of an experimental system previous evolved in the laboratory, the S<em>accharomyces cerevisiae</em> snowflake system. This system was experimentally selected resulting in a significant evolutionary shift, the transition from uni-to-multicellularity in asexual diploid populations. We carried out the phenotypic and fitness characterization of the strains. Additionally, we observed a rapid loss of heterozygosity (LOH) events in the heterozygote strains. Experimental evolution starting with the heterozygote strains suggests that LOH is common both under selection and without selection. LOH event drive adaptation that may enable rapid evolution in diploid yeast. </p>
Experimental comparison of fish mortality and injuries at innovative and conventional small hydropower plants - raw data
<p><span>Resolving the controversy about hydropower is only possible based on reliable data on its ecological effects, particularly fish welfare.</span></p> <p><span>Herein, we propose a comprehensive assessment of conventional and innovative hydropower using a data set of 52 250 fish.</span></p> <p><span>The </span><span>effects of hydropower on fish were most harmful at sites with Kaplan turbines, showing </span><span>£</span> <span>83% </span><span>mortality.</span> <span>Innovative hydropower, often termed 'fish-friendly', caused </span><span>£</span> <span>64% mortality.</span></p> <p><span>Our findings suggested that the runner peripheral speed, number of turbine blades, turbulence and gas oversaturation at turbine outlets were the most important factors.</span></p> <p><span>Synthesis and Applications:</span><span> To reduce the impact of hydropower on fish, site-specific characteristics such as head drop, bypass options and river-specific species composition need to be more intensively considered in optimal turbine technologies and operation modes.</span></p>
Dataset for the paper titled Discovering State Variables Hidden in Experimental Data
<p>Dataset for the paper titled Discovering State Variables Hidden in Experimental Data. More information is at: https://www.cs.columbia.edu/~bchen/neural-state-variables/</p> <p>For more questions, please contact: Boyuan Chen (boyuan.chen@duke.edu)</p>
Experimental Calendar Ageing Data for Lithium-Ion Battery Chemistries
<p>This data set has been generated by Technische Hochschule Ingolstadt (THI). If there are any questions,<br> please do not hesitate to get in touch with the authors.</p>
Raw Data to 'Experimental verification of the area law of mutual information in quantum field theory', arXiv:2206.10563
<p><strong>Absorption images representing the raw data for arXiv:2206.10563</strong></p> <p>'scan5722.zip' contains the raw data for figures 2 and 3.</p> <p>'scan5831.zip' and 'scan9617.zip' contain the raw data for figure 5, right and left, respectively.</p> <p>All three datasets, 9617, 5722, and 5831, are used to obtain the data points in figure 4, from low to high temperatures.</p> <p> </p> <p><strong>Scans 5722 & 5831</strong></p> <p>The absorption images are numbered consecutively.</p> <p>The first image for scans 5722 and 5831 is taken along the axial (longitudinal) direction with our 'longitudinal' imaging system after 10 ms time of flight (TOF) to measure the atom number balance between the two wells. The measurement is performed before ramping up the DW barrier. Two images are taken in each cycle: One shot with atoms ('1-atomcloud.tif') and a second image to record the intensity of the imaging beam without atoms ('1-withoutatoms.tif'). These two pictures are used to extract the atomic density (see the Matlab script).</p> <p>The second image for scans 5722 and 5831 is taken in the direction of the double-well (DW) separation with our 'transverse' imaging system. The measurement is performed before ramping up the DW barrier. The image is taken after 11.2 ms TOF.</p> <p>The subsequent images record the interference fringes for the different evolution times (again, always pairs '-atomcloud.tif' and '-withoutatoms.tif'). They are taken with our 'vertical' imaging system after 15.6 ms TOF. The imaging direction is perpendicular to the weakly confined direction of the clouds and the DW separation.</p> <p>The recorded evolution times for scan 5722 are -1.9 ms (right before ramping up the DW barrier), 0 ms (right after the DW barrier is ramped up), and then in steps of 2.5 ms until 65 ms. This means that '3-atomcloud.tif' corresponds to -1.9 ms, and '30-atomcloud.tif' corresponds to 65 ms. This completes the 'first repeat'. The next two shots, '31-atomcloud.tif' and '32-atomcloud.tif', belong to the 'second repeat' and are again taken with the 'longitudinal' & 'transverse' imaging systems, respectively. The picture '33-atomcloud.tif' is again taken with the 'vertical' imaging and corresponds to -1.9 ms. And so forth.</p> <p>In the same way, the pictures scan 5831 are ordered. The evolution times (in ms) for these two scans are:</p> <p>scan 5722: -1.9 from 0 to 65 (in steps of 2.5)</p> <p>scan 5831: -1.8, from 0 to 65 (in steps of 2.5)</p> <p>The first time always corresponds to the instant right before the DW barrier is ramped up. 0 is always right after the barrier was ramped up.</p> <p> </p> <p><strong>Scan 9617</strong></p> <p>This scan only contains images with the 'vertical' imaging system with 15.6 ms TOF. The evolution times (in ms) are as follows:</p> <p>scan 9617: -2.8, from 0 to 15 (in steps of 1.5), 22, 25, 28</p> <p>The first time always corresponds to the instant right before the DW barrier is ramped up. 0 is always right after the barrier was ramped up.</p> <p>This means, that '1-atomcloud.tif', '16-atomcloud.tif', '31-atomcloud.tif' and so on correspond to -2.8 ms, and '15-atomcloud.tif', '30-atomcloud.tif', '45-atomcloud.tif' and so on correspond to 28 ms.</p> <p> </p> <p><strong>Matlab script</strong></p> <p>In addition to the data, a Matlab script (calc_atomic_density.m) illustrates how to extract the two-dimensional atomic density from the absorption images. It contains all relevant parameters of the imaging systems.</p>
Supporting experimental data for "Z-average and Polydispersity Index of Dynamic Light Scattering" by Bazzoni et al.
<p>Data (auto-correlation functions used for preparing Figure 5-8) accompanying manuscript "Z-average and Polydispersity Index of Dynamic Light Scattering" by Bazzoni et al.</p> <p> </p> <p>1. “<strong>Figure 5_ACFs.zip</strong>” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate heteroscedastic and angle-dependent uncertainties. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 5 is based on the analyses of subsets of this data set.</p> <p>2. “<strong>Figure 6 & 7_ACFs.zip</strong>” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate the impact of uncertainty on precision, and the impact of duration and photon counting rate on the signal-to noise ratio. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 6 and 7 are based on the analyses of subsets of this data set.</p> <p>3. “<strong>Figure 8_ACFs.zip</strong>” Large sets of autocorrelation functions (ASCII format) recorded to demonstrate the positive impact of data averaging on precisions. Each file may list the basic parameters, instrument’s estimation of Z-average (not evaluated and not used by us), the auto-correlation function, and a low temporal-resolution trace of the scattering intensity. Figure 8 is based on the analyses of subsets of this data set.</p>
Original data for publications: Direct solution–based synthesis of the Na4(B12H12)(B10H10) solid electrolyte, Experimental investigation of Mg(B3H8)2 dimensionality, materials for energy storage applications, Thermal Conversion of Unsolvated Mg(B3H8)2 to BH4– in the Presence of MgH2
<p>Original data for the following papers (Only part of University of Geneva, synthesis part):</p> <p>Direct solution–based synthesis of the Na4(B12H12)(B10H10) solid electrolyte<br> Gigante, A.; Duchêne, L.; Moury, R.; Pupier, M.; Remhof, A.; Hagemann, H.<br> ChemSusChem 2019, 12, 4832-4837</p> <p>Experimental investigation of Mg(B3H8)2 dimensionality, materials for energy storage applications<br> Romain Moury, Angelina Gigante, Arndt Remhof, Elsa Roedern and Hans Hagemann<br> Dalton Trans., 2020,49, 12168-12173, https://doi.org/10.1039/D0DT02170A</p> <p>Thermal Conversion of Unsolvated Mg(B3H8)2 to BH4– in the Presence of MgH2<br> Angelina Gigante, Noemi Leick, Andrew S. Lipton, Ba Tran, Nicholas A. Strange, Mark Bowden, Madison B. Martinez, Romain Moury, Thomas Gennett, Hans Hagemann, and Tom S. Autrey<br> ACS Appl. Energy Mater. 2021, 4,3737-3747. https://doi.org/10.1021/acsaem.1c00159</p> <p> </p>
Experimental data linked to publication "Process optimization and study of the co-sintering behaviour of Cu-Ni multi-material 3D structures fabricated by spark plasma sintering (SPS)"
<p>Those are all the experimental data used to produce the plots in the article</p>
Experimental data: Low-velocity out-of-plane impact tests on double-wythe unreinforced brick masonry walls instrumented with optical measurements
<p>This dataset includes the results of laboratory impact tests conducted on natural-scale double-wythe unreinforced brick masonry walls. The walls were spanning vertically between two reinforced concrete slabs and were subjected to low-velocity drop-weight pendulum tests in which they were repeatedly hit until the opening of a breach in the center of the wall. The tests were instrumented with both hard-wired and optical measurements, the latter consisting of high-speed cameras and digital image correlation techniques. Investigated in these tests were the out-of-plane response of the walls and their capacity to resist the impacts. The axial load applied on the top of the walls was varied for two wall configurations and monitored throughout the tests to study the effect of arching on the failure mechanism produced and number of repeated hits needed to open the breach. Of interest was also the evidence of cracking, more specifically the way it initiated on the undamaged walls and next propagated upon consecutive hits. </p> <p>The data generated from the tests is made here available and documented to support further investigations on masonry structures subjected to extreme actions. The dataset includes four ZIP files, ordered from 01 to 05, along with an auxiliary PDF document describing the content and organization of the data. </p> <p>Test implementation and test results that are built upon this data are presented and discussed in the following research article:</p> <blockquote> <p><a href="https://www.sciencedirect.com/science/article/pii/S0734743X23001082?via%3Dihub">Godio M, Flansbjer M, Williams Portal N (2023) Low-velocity out-of-plane impact tests on double-wythe unreinforced brick masonry walls instrumented with optical measurements, International Journal of Impact Engineering</a></p> </blockquote> <p>To cite this data in your work please refer to the article.</p> <p>The Authors</p>
Data of "Ductile fracture of high entropy alloys: from the design of an experimental campaign to the development of a micromechanics-based modeling framework"
<p>Data related to the publication (we would be grateful if you could cite the paper in the case in which you are using the data):</p> <p>title = "Ductile fracture of high entropy alloys: from the design of an experimental campaign to the development of a micromechanics-based modeling framework",<br> journal = "Engineering Fracture Mechanics",<br> year = "2022",<br> volume = "275",<br> pages = "108844 ",<br> doi = "https://doi.org/10.1016/j.engfracmech.2022.108844",<br> author = "Antoine Hilhorst, Julien Leclerc, Thomas Pardoen, Pascal J. Jacques, Ludovic Noels, Van-Dung Nguyen"</p> <p>New version following review.</p> <p> </p> <p> </p>
ScienceDex guides
Understand access before you commit
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.