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363 results for “stack”
Efficient excitation transfer in an LH2-inspired nanoscale stacked ring geometry
<p>The data supporting the findings in the manuscript "Efficient excitation transfer in an LH2-inspired nanoscale stacked ring geometry" are available here.</p>
threads-stack-overflow
<h3>Overview</h3> <p>This is a temporal higher-order network dataset, which here means a sequence of timestamped hyperedges where each hyperedge is a set of nodes. In this dataset, nodes are users on <a href="https://stackoverflow.com/">stackoverflow.com</a>, and a hyperedge comes from users participating in a thread that lasts for at most 24 hours. The timestamps are the time of the post, but normalized so that the earliest post starts at 0. </p> <h3><strong>Source of original data</strong></h3> <p>Source: <a href="https://www.cs.cornell.edu/~arb/data/threads-stack-overflow/">threads-stack-overflow dataset</a></p> <h3><strong>References</strong></h3> <p>If you use this data, please cite the following paper:</p> <ul> <li><a href="https://doi.org/10.1073/pnas.1800683115">Simplicial closure and higher-order link prediction</a>. Austin R. Benson, Rediet Abebe, Michael T. Schaub, Ali Jadbabaie, and Jon Kleinberg. Proceedings of the National Academy of Sciences (PNAS), 2018.</li> </ul>
Operating diagram of the incubator, two tiered modules contain six independent incubators. Three shallow hatching are (220 × 60 × 17 cm) stacked on top of each other to create a compact assembly in which each tier functions independently. Eighteen trays covered with eggs can be placed in each tier, allowing the simultaneous incubation of seven to nine lays. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum
Operating diagram of the incubator, two tiered modules contain six independent incubators. Three shallow hatching are (220 × 60 × 17 cm) stacked on top of each other to create a compact assembly in which each tier functions independently. Eighteen trays covered with eggs can be placed in each tier, allowing the simultaneous incubation of seven to nine lays.
Searching for HI around MHONGOOSE Galaxies via Spectral Stacking
<p>Stacked spectra obtained from spectrally stack around 14 nearby galaxies observed at 1.4 GHz as part of the MHONGOOSE survey (<a href="https://ui.adsabs.harvard.edu/abs/2024A%26A...688A.109D/abstract" target="_blank" rel="noopener">de Blok et al., 2024</a>). The reference paper is available at <a href="https://ui.adsabs.harvard.edu/abs/2024arXiv241111584V/abstract" target="_blank" rel="noopener">NASA-ADS</a>.</p> <p><em>First page: </em>detections in the stacked spectra of the shallow cubes. Each panel shows a single-track stacked spectrum (in blue) and its 9-channel boxcar smoothed version (in red). The detected source is highlighted. The horizontal grey dashed lines are the ±σ level for the unsmoothed spectrum, while the black dashed line is the 0-flux level. The vertical black dashed-dotted line is, instead, the 0-km/s reference velocity. The galaxy name and the cell size are provided in the bottom-left corner, while at the bottom-right is reported if the detection was also visually identified in its corresponding cube.<br><em>Second page</em>: detections in the stacked spectra of the full-depth cubes. Each panel shows a single-track stacked spectrum (in blue) and its 9-channel boxcar smoothed version (in red). The detected source is highlighted. The horizontal grey dashed lines are the ±σ level for the unsmoothed spectrum, while the black dashed line is the 0-flux level. The vertical black dashed-dotted line is, instead, the 0-km/s reference velocity. The galaxy name and the cell size are provided in the bottom-left corner, while at the bottom-right is reported if the detection was also visually identified in its corresponding cube.</p>
The ZSW HyFaB Generic Stack
<h1>ZSW HyFaB Generic Stack:<strong> state-of-the-art</strong> and <strong>open</strong> PEM fuel cell stack platform</h1> <ul> <li>Initial design work performed within FVV (Forschungsvereinigung Verbrennungskraftmaschinen / Research Association for Internal Combustion Enginges) industry dialogue project "generic stack“ with consensus on high-level specifications</li> <li>Further development within the framework of the HyFaB project</li> <li>Active area relevant for mobile applications (280 cm²)</li> <li>Power density as for automotive application up to 150 kW</li> <li>Public set of drawings free of third party rights</li> <li>Flow simulations done and available on request</li> <li>EKPO as industrial partner for series production of the metallic bipolar plates - product can be ordered from ZSW</li> </ul> <p>The zip-files contain the respective CAD drawings and further contents in the widespread <em>STEP</em> (*<em>.stp), DXF (*.dxf) </em>and<em> PDF (*.pdf</em>) file formats.</p> <p>The HyFaB project leading to this stack design was funded by the state of Baden-Württemberg, Ministry for the Environment, Climate and Energy Industry under the funding reference L75 20112.</p>
Supplementary Material of "Fuel Starvation in Automotive PEMFC Stacks: Stack Current and Bipolar Plate Resistance"
<p>This video contains the discussed experimental data of the following journal publication, which explains experimental setup, test cycle and the shown data in detail.</p> <p><strong>Nissen, J., Boye, J. P., Schrievers, M., Schwämmlein, J. N., & Hölzle, M. (2025). Fuel Starvation in Automotive PEMFC Stacks: Stack Current and Bipolar Plate Resistance. <em>Journal of Physics: Energy</em>. </strong></p> <p><strong><a href="https://doi.org/10.1088/2515-7655/ada184">https://doi.org/10.1088/2515-7655/ada184</a></strong></p> <p>The time-dependent behavior of the respective fuel cell is furthermore discussed in a follow-up publication:</p> <p><strong>Nissen, J., Boye, J. P., Schwämmlein, J. N., Willich, C., & Hölzle, M. (2025). Fuel starvation in automotive PEMFC stacks: A self-enhancing overheating mechanism. <em>Journal of Physics: Energy</em>. <br><a href="https://doi.org/10.1088/2515-7655/ade288">https://doi.org/10.1088/2515-7655/ade288</a></strong></p>
Growth-related formation mechanism of I3-type basal stacking fault in epitaxially grown hexagonal Ge-2H
<p>The hexagonal-2H crystal phase of Ge recently emerged as a promising direct bandgap semiconductor in the mid-infrared range providing new prospects of additional opto-electronic functionalities of group-IV semiconductors (Ge and SiGe). The controlled synthesis of such hexagonal (2H) Ge phase is a challenge that can be overcome by using wurtzite GaAs nanowires as a template. However, depending on growth conditions, unusual basal stacking faults (BSFs) of I<sub>3</sub>-type are formed in the metastable 2H structure. The growth of such core/shell heterostructures is observed <em>in situ</em> and in real-time by means of environmental transmission electron microscopy using chemical vapour deposition. The observations provide direct evidence of a step-flow growth of Ge-2H epilayers and reveal the growth-related formation of I<sub>3</sub>-BSF during unstable growth. Their formation conditions are dynamically investigated. Through these <em>in situ</em> observations, we can propose a scenario for the nucleation of I<sub>3</sub>-type BSFs that is likely valid for any metastable hexagonal 2H or wurtzite structures grown on m-plane substrates. Conditions are identified to avoid their formation for perfect crystalline synthesis of SiGe-2H.</p> <p>This data set contains all the processed supporting videos of in-situ TEM observations .</p> <p> </p>
SANER 2022 - Industrial Track - Investigating the Point of View of Project Management Practitioners on Technical Debt - A Preliminary Study on Stack Exchange
<p>Dataset related to the paper Investigating the Point of View of Project Management Practitioners on Technical Debt - A Preliminary Study on Stack Exchange. </p> <p> </p> <p>Saner 2022 Industrial Track</p>
Research Artefact: An Empirical Study of React-Library Related Issues via Stack Overflow
<p>This research artifact accompanies the paper titled "An Empirical Study of React-Library Related Issues via Stack Overflow." It is a comprehensive repository that includes the collected dataset containing 447,542 React-related Stack Overflow question posts, as well as 384 representative samples obtained randomly. The primary objective of this artifact is to facilitate the replication of our dataset for researchers and allow them to utilize it for further investigations and research purposes.</p>
Collective interlayer pairing and pair superfluidity in vertically stacked layers of dipolar excitons - data
<p>Data files for the figures appearing in the PNAS paper "Collective interlayer pairing and pair superfluidity in vertically stacked layers of dipolar excitons".</p> <p> </p> <p> </p>
Raw RADseq data for: Population genomics analysis with RAD, reprised: Stacks 2
<p>Restriction enzymes have been one of the primary tools in the population genetics toolkit for 50 years, being coupled with each new generation of technology to provide a more detailed view into the genetics of natural populations. Restriction site-Associated DNA protocols, which joined enzymes with short-read sequencing technology, have democratized the field of population genomics, providing a means to assay the underlying alleles in scores of populations. More than 10 years on, the technique has been widely applied across the tree of life and served as the basis for many different analysis techniques. Here, we provide a detailed protocol to conduct a RAD analysis from experimental design to de novo analysis—including parameter optimization—as well as reference-based analysis, all in Stacks version 2, which is designed to work with paired-end reads to assemble RAD loci up to 1000 nucleotides in length. The protocol focuses on major points of friction in the molecular approaches and downstream analysis, with special attention given to validating experimental analyses. Finally, the protocol provides several points of departure for further analysis.</p>
Manual quantification of peroxisome counts in yeast from 2-channel fluorescence Z-stacks
<p>This dataset contains fluorescence microscopy imaging data from various strains of <em>Saccharomyces cerevisiae</em>. The images were used to test software called <em>perox-per-cell,</em> which automatically quantifies peroxisome features in yeast cells based on microscopy data. There are 44 imaging instances in the dataset, each consisting of two Z-stacks, one capturing signal from calcofluor white to identify cell boundaries (blue channel), and one capturing signal from GFP tagged with peroxisome targeting sequence 1 (PTS1) to locate peroxisomes (green channel). These raw microscopy imaging sets are provided as ZVI files in <strong>Zstacks.zip</strong>.</p> <p>We compared <em>perox-per-cell</em>'s automatically-generated peroxisome counts to those derived manually by two individuals. For manual counting, images were deconvolved with theoretically generated point spread functions using Axiovision software V4.9.1 SP2 followed by the generation of maximum intensity Z-projections (MIP) of both blue and green channels. All the deconvolved MIP images from WT and mutant strains were blinded and labelled as ‘1-44’, and their grey levels were set to ‘best fit’ in the Axiovision software prior to providing them to two individuals who manually counted peroxisomes in cells using the ‘measure events’ tool in Axiovision. The maximum intensity projection images used for manual counting are provided as ZVI files in <strong>MaxIntensityProjections.zip</strong>.</p> <p>Each individual's manual counts are included in this dataset within the CSV file <strong>ManualPeroxisomeCounts.csv</strong>. Please note that cell IDs in this file are only indicative of the order in which each individual counted peroxisomes, they do not indicate a specific cell within an image. For example, "Cell5" in Image 3 that was processed by manual counter 1 may not be the same cell as "Cell5" in Image3 processed by manual counter 2. These two entries have the same cell ID only because for both manual counters, they were the 5th cell counted.</p> <p>For our software test, we used wild-type (WT) yeast strains as well as several mutant strains with known peroxisomal defects. The strains used for each image are indicated in the<em> </em><strong>ImageAndStrainTable.csv</strong> file.</p> <p>Experimental details: <em>Saccharomyces cerevisiae</em> cells were grown in synthetic defined medium (SD: 6.7 g/L Yeast nitrogen base without amino acids + 0.79 g/L CSM) with 2% Dextrose in flask cultures shaken at 250 rpm at 30 °C until log phase after which they were pelleted and resuspended in 50 µg/ml calcofluor white stain (Sigma, Cat No. 18909) for 5-10 min followed by imaging at room temperature. 3D images consisting of 26 XY images with a Z-slice spacing of 0.204 µm (total Z-stack thickness 5.1 µm) were acquired at 100× magnification using a fluorescence microscope (Axioskop 2 MOT plus, Carl Zeiss, Inc.) equipped with a Plan Apochromat 100×/1.4 Oil DIC objective, an Axio Cam HRm camera and an HBO 100 Mercury lamp. Identical exposure times (50 ms) were used to acquire the green channel images whereas the exposure time for blue channel was adjusted for individual images based on the intensity of calcofluor staining. </p> <p> </p> <p> </p>
Figure 2 in Modeling the sustainability and economics of stacked herbicide-tolerant traits and early weed management strategy for waterhemp (Amoronthus tuberculotus) control
Figure 2. Sustainability of the programs with stacked HT traits or residual herbicides, as influenced by application time (PRE and POST) and number of herbicide SOAs on (A) weed density and (B) resistance evolution. Resistance evolution is presented as % individuals that are resistant to at least one of the herbicides excluding H, either in the form of single or multiple resistance.The populations consist of 80% individuals resistant to H initially. Herbicide scenarios are detailed in Table 2. The simulations were set to stop when weed density exceeded 1 plant m−2, hence the incomplete lines of scenario EWM(i).
Figure 1 in Modeling the sustainability and economics of stacked herbicide-tolerant traits and early weed management strategy for waterhemp (Amoronthus tuberculotus) control
Figure 1. Sustainability of the POST-only programs,as influenced by the number of herbicide SOAs and the initial level of quantitative resistance to herbicide H. Cross-resistance between herbicides H and X is included in D–F. Results are presented as the year of weed control failure; bars represent the mean, and error bars represent the range of 100 replicates. Herbicide scenarios are detailed in Table 2. r-HX, correlation coefficient between phenotypic values of H and X.
Partial angle-stacked seismic data for quantitative stress prediction
<p>The uploaded partial angle-stacked seismic data can be used as the input file to our inversion method to estimate the effective stress and other elastic parameters of subsurface reservoirs directly. </p>
Supplementary Material of "Fuel Starvation in Automotive PEMFC Stacks: Hydrogen Stoichiometry and Electric Cell-to-Cell Interaction"
<p>This video contains the discussed experimental data of the following journal publication, which explains experimental setup, test cycle and the shown data in detail.</p> <p><strong>Nissen, J., Boye, J. P., Schwämmlein, J. N., & Hölzle, M. (2024). Fuel starvation in automotive PEMFC stacks: hydrogen stoichiometry and electric cell-to-cell interaction. <em>Journal of Physics: Energy</em>. <br><a title="https://doi.org/10.1088/2515-7655/ad5f54" href="https://doi.org/10.1088/2515-7655/ad5f54">https://doi.org/10.1088/2515-7655/ad5f54</a></strong></p> <p>Version 01: Video as .MKV file. Quite large and not supported for in-browser visualization by zenodo.</p> <p>Version 02: Changed video format from .MKV to .MP4 to reduce file size and allow in-browser visualization by zenodo. Identical content as Version 01.</p>
◂Fig. 3 Gynoecium of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A, B stack shot images; C–K light microscopy; G polarised light; TS in horizontal orientation). A, B Anthetic female flower, calyx and corolla partly removed. B LS of gynoecium. C LS of functionally female flower %note strongly stained peripheral tissue of corolla, anther and gynoecium). D LS of gynoecium. E, F TS of functionally female flower %note strongly stained, peripheral tissue). G TS of functionally female flower %note crystal deposition). H LS of ovule %note stalked embryo sac). J TS of functionally male flower with non-functional ovules. K LS of functionally male flower %style lacking, original position indicated by an asterisk) %LS, longisection; TS, transverse section; a,anther; bs, basal septum; c, calyx; car, carpel; co, corolla; db, dorsal bundles; es, embryo sac; fs, false septum; lb, lateral bundles; o, ovule; stg, stigma; sty, style; t, trichomes; tt, transmission tissue; ut, peripheral, strongly stained tissue; vb, ventral bundles; vs, ventral slit) in Observations on flower and fruit anatomy in dioecious species of Cordia (Cordiaceae, Boraginales) with evolutionary interpretations
◂Fig. 3 Gynoecium of C. crenata %yellow frames), C. cf. grandicalyx %blue frames) and C. sinensis %pink frames; A, B stack shot images; C–K light microscopy; G polarised light; TS in horizontal orientation). A, B Anthetic female flower, calyx and corolla partly removed. B LS of gynoecium. C LS of functionally female flower %note strongly stained peripheral tissue of corolla, anther and gynoecium). D LS of gynoecium. E, F TS of functionally female flower %note strongly stained, peripheral tissue). G TS of functionally female flower %note crystal deposition). H LS of ovule %note stalked embryo sac). J TS of functionally male flower with non-functional ovules. K LS of functionally male flower %style lacking, original position indicated by an asterisk) %LS, longisection; TS, transverse section; a,anther; bs, basal septum; c, calyx; car, carpel; co, corolla; db, dorsal bundles; es, embryo sac; fs, false septum; lb, lateral bundles; o, ovule; stg, stigma; sty, style; t, trichomes; tt, transmission tissue; ut, peripheral, strongly stained tissue; vb, ventral bundles; vs, ventral slit)
Prototyping 3D Virtual Learning Environments with X3D-based Content and Visualization Tools-Figure 3. The graphic stack of X3DOM (Havele 2011)
<p>The current release of X3DOM supports native implementations (iOS8, Chrome, and Firefox for Android), with fallback to WebGL API, and partially to X3D/SAI plugins (INSTANTREALITY 2017). X3DOM is above WebGL, OpenGL and DirectX, and subsequently has less complexity (in Figure 3 is shown the graphical stack). Integrated into the HTML DOM, X3DOM allows web programmers to continue their experience, based on known web technologies such as CSS, Java Script, JQuery or Ajax. Standard technologies can streamline a VR or AR application development, by hiding the low-level complex tasks, and allow the access to device sensors and video camera via high-level API functions. X3DOM supports embedded X3D-XML files references using inline nodes, i.e. an X3D- XML file can reference other X3D-XML files and build a hierarchy of assets (X3DOM 2017) which can be loaded in the background with a higher throughput.</p>
Data for "Is Stack Overflow in Portuguese attractive for Brazilian Users?"
<p>Data for Botto-Tobar et al. Is Stack Overflow in Portuguese attractive for Brazilian Users?. ICGSE 2018.</p> <p>This data was built based on data dump from Stack Exchange (https://stackexchange.com) website. It contains two separate databases (Stack Overflow in English and Stack Overflow in Portuguese):</p> <ul> <li>Users</li> <li>Posts, decomposed by Answers and Questions</li> <li>Tags</li> <li>PostTags</li> <li>GenderUser</li> <li>UserLocation</li> </ul> <p>For more information, please visit http://www.win.tue.nl/~mbottoto/files/papers/conference_papers/sopt_icgse2018.pdf or write to <em>m.a.botto.tobar@tue.nl</em></p> <p> </p>
Mathematics Stack Exchange API Q&A Data
<p>This dataset was compiled as part of the ESPRC project "Example-driven machine-human collaboration in mathematics", for the purpose of doing text-based analysis of mathematical discourse and for the construction of a conversational mathematics bot.</p> <p>It consists of approximately 1 million mathematics questions and their respective answers, as well as markers of interaction quality (such as user-provided scoring of question and answer quality) and social dynamics (reputation scores, badges, etc).</p> <p>The data was obtained from the <a href="https://stackexchange.com/">StackExchange</a> website, by querying the <a href="https://api.stackexchange.com/">Stack Exchange API</a> according to its documentation.</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.