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2,218 results for “loading”
Nitrogen cycling and metabolic rates of aquacultured and wild Acropora coral from Guam in response to ammonium loading rates during 2020-2022
Rates from aquacultured corals and coral fragments collected in Guam in response to ammonium loading. These data are from two separate experiments, one using aquacultured corals and artificial seawater and light. The second was done with wild collected Acropora pistillata from two reef sites in Guam. The first site was West Hagåtña Bay (N13.479650, E144.741750; N13.479833, E144.741733) which had more nearby urban influences and was near the sewage outfall for the city (Redding et al. 2013). The second site was Luminao Reef (N13.4652417, E144.6477483; N13.465467, E144.648050) which was a more isolated reef on the seaward side of the breakwater for Guam’s major port. We measured respiration, gross primary production, 15N ammonium uptake to corals, related nitrogen cycling fluxes in the tanks (reminerization, net uptake, nitrification).
Measurement of Fuel load (organic biomass) Quantities of Organic Soils, Understory Plants and Trees at Sites within the Bonanza Creek LTER Regional Site Network in Interior Alaska, 2019
This dataset contains fuel load measurements for a subset of the BNZ LTER's RSN sites (n = 28). The data for each site separted by 16 fuel types (or plant functional types) including organic soil layers (fibric, mesic), vascular understory (evergreen shrub, short deciduous shrub, graminoid, forb, tall deciduous shrub, tree seedling/sapling, dead-downed wood), nonvascular understory (feather moss, Sphagnum moss, colonizer moss, lichen) and trees (evergreen tree, deciduous tree).
Does water-bath cleaning affect the health of visiting birds? A study of parasite loads in house finches (Haemorhous mexicanus) in the Phoenix, Arizona, USA metropolitan area (2018)
There is evidence that urban animals have higher parasite and pathogen burdens than those from natural areas, but the mechanism behind this pattern is unclear. One possibility for yard-visiting birds is that they drink from bird baths that have not been regularly cleaned and thus they have elevate infection risks and rates by consuming unusually soiled water. We experimentally tested this idea in house finches (Haemorhous mexicanus) – a common backyard visitor in North America – by implementing a rotating bath-cleaning regime, where we either left baths uncleaned for 5 weeks or cleaned them daily with dilute bleach for 5 weeks, and did so at both an urban and rural study site. We found that coccidian endoparasitism decreased in urban birds when they drank from clean baths, but the same was not true for rural birds. These results reveal a habitat-specific effect of feeder cleaning on disease status in an abundant yard-visiting songbird.
Trophic Interactions, Habitat Use, and Pollution Loads of Bottlenose Dolphins (Tursiops Truncatus) in the Florida Coastal Everglades, Florida, USA, 2013-2019
Cetaceans can feed at upper trophic levels and occur from freshwater to open-ocean ecosystems. Due to their abundance, mobility, and high metabolic rates, they have the potential to affect the structure and function of ecosystems through both top-down and bottom-up pathways. To better understand what ecological roles they may play in a system, it is important to understand patterns and drivers of their abundance, habitat use, and trophic interactions. I investigated the trophic interactions and pollutant exposure of common bottlenose dolphins (Tursiops truncatus) of the Florida Coastal Everglades. Based on bulk stable isotope analysis of tissue samples collected using biopsy sampling, it appears that despite their high mobility, bottlenose dolphins restrict their foraging within the habitats where they were sampled. Trophic position and foraging locations affected exposure to pollutants, with high levels of mercury found in dolphins estimated to forage at higher trophic levels and feeding within an inland bay. Mercury levels also varied with age and sex. Dolphins and their prey both contained substantial mercury levels and dolphins’ health could be impacted by this exposure, but the selenium levels we measured might counteract these negative effects.
Annual estimates of nitrogen loading to the Ipswich River Watershed, 1931 - 2014.
The nitrogen budget of the Ipswich River watershed was reconstructed to explore trends over time, 1931 to 2014, in gross N inputs, net N inputs, riverine exports.Various sources were used to reconstruct major N budget terms for atmospheric deposition, fertilizer, food imports, sewage N exports, riverine N exports.
Performance results of LeanMD on the Joliot-Curie supercomputer using different load balancing algorithms
<p>This dataset contains the raw output files generated from the execution of LeanMD on the Joliot-Curie supercomputer (20 SKL Irene nodes), the scripts used to generate them, and the scripts used to parse these results for statistical analysis and plotting.</p> <p><strong>Software information</strong>:</p> <ul> <li>OS: Red Hat Enterprise Linux 7.6</li> <li>OpenMPI: version 2.0.4</li> <li>Compilers: C/C++ Intel 17.0.6.256</li> <li>Charm++ version: v6.9.0-rc3, build mpi-linux-x86_64 --with-production</li> <li>LeanMD source: <a href="https://charm.cs.illinois.edu/gerrit/gitweb?p=benchmarks/leanmd.git">https://charm.cs.illinois.edu/gerrit/gitweb?p=benchmarks/leanmd.git</a></li> <li>Additional load balancers source: <a href="https://github.com/viniciusmctf/packing-schemes/tree/packs_2019-v1">https://github.com/viniciusmctf/packing-schemes/tree/packs_2019-v1</a></li> <li>Charm++, LeanMD, and the load balancers were compiled with -O3</li> </ul> <p><strong>File information</strong>:</p> <p>The raw result files are organized in four directories (oct18, oct23, oct24, and oct24_2).<br> Each directory contains the results of one batched execution in the supercomputer.<br> Each batch is composed of 10 repetitions of a set of experiments.<br> Each set of experiments includes different load balancing algorithms and different problem sizes.<br> Each set is randomly ordered to avoid interference coming from a specific order of execution.<br> Each raw file contains the appended output of the application and its load balancer for all 10 repetitions.<br> The name of the files indicate the load balancer and size of the problem.<br> For instance, `PackStealLB.240` means that the application was run with PackStealLB and the problem size parameter is 240.</p> <p><strong>Problem sizes</strong>:</p> <ul> <li>80: 80×11×5 cells of dimensions 15×15×30</li> <li>120: 120×11×5 cells of dimensions 15×15×30</li> <li>160: 160×11×5 cells of dimensions 15×15×30</li> <li>240: 240×11×5 cells of dimensions 15×15×30</li> <li>320: 320×11×5 cells of dimensions 15×15×30</li> </ul> <p>Each execution of LeanMD ran for 301 iterations with load balancing calls at iterations 40, 140, and 240.</p> <p><strong>Raw output files</strong>:</p> <p>Each raw output file starts with a Charm++ header providing information on the execution.</p> <p>For each step of the application, its execution time in ms is provided.</p> <p>Load balancing calls usually provide information about their start time, end time, and duration. Depending on the load balancer, more information is provided.</p> <p>Each raw file contains ten executions of the application with a given load balancer and input size.</p> <p><strong>Generating plots</strong>:</p> <p>The analysis of the results can be done by running the Jupyter notebook named "Analysis of load balancing results.ipynb"</p>
Cyclic friction tests of ballast stones interfaces under varying vertical load
<p>This data set contains results from cyclic ballast-ballast friction tests under varying load.<br> Two types of railway ballast were tested: “Calcite” (stems from Croatia) and “Kieselkalk”, also known as Helvetic Siliceous Limestone, (stems from Switzerland).<br> In each friction test, a stone with a distictive tip was sheared over a flat (stone) surface under a given normal load.<br> The applied normal load was increased from 10 N to 100 N in several load steps in each test.<br> For each applied load, a given number of cycles were conducted.<br> In total, 7 tests were conducted for Calcite and 8 for Kieselkalk.<br> The test results are provided in .csv files and contain (among other values) the measured coefficient of friction (CoF) values.<br> The test were organised in three test series. In all conducted test, the angular tip stones were 3D scanned before and after the tests.<br> Test series 1 and 2, involved a 3D scanning before each load increase.<br> The data of these tip scans are also provided (in .ply file format). From the 3D scans the contact areas were calculated (using an alogorithm described in the paper below).<br> A detailed description of the tests and discussion of measurements can be found in:</p> <p>B. Suhr, T.A. Butcher, R. Lewis, K. Six<br> "Friction and wear in railway ballast stone interfaces"<br> Tribology International 2020<br> <a href="https://doi.org/10.1016/j.triboint.2020.106498">https://doi.org/10.1016/j.triboint.2020.106498</a></p> <p><br> This data set is organised as follows:</p> <p>Folder FrictionTests: contains measured data from friction tests in .csv file format.<br> Folder TipScans: contains data from scans of ballast tip stones before/in between/after cyclic friction tests. Meshes are provided in .ply file format.<br> Folder TipScans: contains two files with detail information on the contact area calculation (for the two types of ballast tested)</p> <p>Each folder contains three subfolder: Series1, Series2, Series3, which contains the data of the corresponding test series,<br> see paper above for a more detailed description.</p> <p>Check the README.txt file for more information on the technical aspects</p> <p> </p> <p>The investigated ballast types are the same, as previously investigated</p> <p>1) in uniaxial compression tests and direct shear tests:<br> Suhr, Bettina, & Six, Klaus. (2018).<br> "Compression tests and direct shear test of two types of railway ballast [Data set]"<br> Zenodo. http://doi.org/10.5281/zenodo.1423742</p> <p>2) in shape analysis including 3D scans:<br> Suhr, Bettina, Six, Klaus, Skipper, William A., & Lewis, Roger. (2020).<br> "3D scans of two types of railway ballast including shape analysis information [Data set]".<br> Zenodo. http://doi.org/10.5281/zenodo.3689592</p> <p> </p>
Dataset: RC U-shaped walls subjected to in-plane, diagonal, and torsional loading: new experimental findings
<p>This dataset contains the processed experimental digital image correlation (DIC) technique data for two large-scale reinforced concrete U-shaped wall specimens tested at the Earthquake Engineering and Structural Dynamics Laboratory (EESD Lab), École Polytechnique Féderale de Lausanne (EPFL) in Switzerland. The abstract for the corresponding journal paper, submitted to <em>Engineering Structures</em>, is given below.</p> <p>Although reinforced concrete U-shaped walls are popular in construction practice internationally, there is a paucity of experimental research investigating the seismic performance of such salient elements. The present paper summarizes an experimental campaign on two slender U-shaped reinforced concrete walls detailed with a single-layer of reinforcement. State-of-the-art instrumentation was used to capture the three-dimensional displacement field of the wall surfaces using digital image correlation techniques. Experimental findings are presented, including strain profiles, equivalent plastic hinge lengths, longitudinal strains at the base, cracking distributions and widths, and out-of-plane deformations. The longitudinal strain profiles showed a yielding region up the boundary ends of the flanges of approximately 800 mm to 1200 mm in length, depending on the direction of loading and at large drift levels. Approximately half of the yielding zone length was found to be equal to the equivalent plastic hinge lengths, which were found to decrease as a function of drift. The longitudinal strains at the base of these walls showed some shear lag effects when subjected to in-plane or diagonal loading. For most directions of loading, the largest crack widths were found to be associated with flexural-shear or shear cracks. When subjected to a pure torque, the vertical strain distribution at the base of the wall correlated with the theoretical distribution for an open section governed by warping torsion. The out-of-plane deformations were primarily concentrated within a small region towards the ends of the flanges prior to the local buckling failures that were observed experimentally.Although reinforced concrete U-shaped walls are popular in construction practice internationally, there is a paucity of experimental research investigating the seismic performance of such salient elements. The present paper summarizes an experimental campaign on two slender U-shaped reinforced concrete walls detailed with a single-layer of reinforcement. State-of-the-art instrumentation was used to capture the three-dimensional displacement field of the wall surfaces using digital image correlation techniques. Experimental findings are presented, including strain profiles, equivalent plastic hinge lengths, longitudinal strains at the base, cracking distributions and widths, and out-of-plane deformations. The longitudinal strain profiles showed a yielding region up the boundary ends of the flanges of approximately 800 mm to 1200 mm in length, depending on the direction of loading and at large drift levels. Approximately half of the yielding zone length was found to be equal to the equivalent plastic hinge lengths, which were found to decrease as a function of drift. The longitudinal strains at the base of these walls showed some shear lag effects when subjected to in-plane or diagonal loading. For most directions of loading, the largest crack widths were found to be associated with flexural-shear or shear cracks. When subjected to a pure torque, the vertical strain distribution at the base of the wall correlated with the theoretical distribution for an open section governed by warping torsion. The out-of-plane deformations were primarily concentrated within a small region towards the ends of the flanges prior to the local buckling failures that were observed experimentally.</p>
Gait Initiation with additional load
<p>Dataset containing raw data from gait initiation with additional load protocol using two force platforms.</p> <p>Each file has force, moments and center of pressure data.</p> <p>Additional load was additioned to waist and shoulder, uniformly and laterally on the stance foot side and swing foot side.</p> <p>The control condition was no load.</p> <p>Each participant performed each condition three times.</p>
Morphology and load transport behaviour of the seed-harvesting ant Messor barbarus Linnaeus 1767
<p>This Excel file contains two datasets. The first dataset (sheet “Morphometric data”) gives the measure of thorax length, body mass as well as the mass of main body segments of 57 individual workers of the ant species <em>Messor barbarus</em> Linnaeus 1767. The workers originated from a colony collected in Saint-Hippolyte, France (42°80 N, 2°98 E) in October 2013. The second dataset (sheet “Transportation data”) relates to observations aiming at investigating the efficiency of <em>M. barbarus</em> workers when transporting pieces of dry pasta on their foraging trails. The data gives the body mass, the characteristics of the item transported, the transportation method (carry or drag), as well as the time required to travel a distance of 1m for 239 individual workers from five colonies located on the campus of the Universitat Autònoma de Barcelona, Spain (41°30′00N, 2°06′49E). For each ant followed the air temperature at ground level is also indicated.</p>
MPI load balancing simulation data sets (companion to IPDPS 2017)
<p>This package contains data sets and scripts (in an Org-mode file) related to our submission to IPDPS 2017, under the title "Using Simulation to Evaluate and Tune the Performance of Dynamic Load Balancing of an Over-decomposed Geophysics Application".</p> <p>The following contents are included:</p> <ul> <li><em>IPDPS2017.org :</em> Org mode (Emacs) file containing the shell (Bash) and R scripts used to: <ul> <li>run the load balancing simulation;</li> <li>process the traces of both real executions (Tau traces) and simulation (Pajé traces);</li> <li>generate the graphics.</li> </ul> </li> <li><em>lb_traces/:</em> this directory contains the raw traces from real executions and SMPI emulations of the Ondes3D application.</li> <li><em>processed_data/</em>: this directory contains the results of the processing of the traces in the form of CSV format data files which are be used to generate the graphics.</li> <li>i<em>mg</em>/: this directory contains the generate graphics, in PNG format.</li> </ul> <p> </p>
Ex-situ X-ray computed tomography data for a non-crimp fabric based fibre composite under fatigue loading
<p>Ex-situ X-ray CT fatigue testing data sets published as a data in brief:</p> <p>"<em>Ex-situ X-ray computed tomography data for a non-crimp fabric based fibre composite under fatigue loading</em>", Data in brief, 2017, doi.org/10.1016/j.dib.2017.10.074.</p> <p>Together with the following article:</p> <p>K. M. Jespersen and L. P. Mikkelsen, “Three dimensional fatigue damage evolution in non-crimp glass fibre fabric based composites used for wind turbine blades,” <em>Compos. Sci. Technol. </em> (In press), 2017, 10.1016/j.compscitech.2017.10.004.</p>
Data set from ambient vibration monitoring and static loading of a steel stringer bridge subject to imposed damage
<p>This data set contains structural response measurements acquired from the Route 345 Bridge over Big Sucker Brook in Waddington, NY prior to demolition and replacement. This steel stringer bridge was instrumented with dual-axis accelerometers and strain transducers and response measurements were obtained prior to and following mechanically imposed damages. Accelerometer measurements were obtained under vehicle passes and strain measurements were acquired during static loading of the span with a truck positioned at three prescribed locations. All measurement data is contained in a single h5-file (hierarchical data format version 5). The data is shared with the intent of promoting the advancement of structural health monitoring and vibration-based damage detection. </p> <p><strong>Version 2 Note: </strong>This version corrects the strain measurement data. Due to an index counter error in the script that compiled the strain measurement data into the h5-file, the strain measurement data in the Version 1 data were incorrectly sourced from a single scenario. The strain measurements are corrected in this new version. No other changes were made in the h5-file.</p>
Paired microtubules growing with a shared load
<p>During mitosis, kinetochore-attached microtubules form bundles (k-fibers) in which many filaments grow and shorten in near-perfect unison to align and segregate each chromosome. However, individual microtubules grow at intrinsically variable rates, which must be tightly regulated for a k-fiber to behave as a single unit. This exquisite coordination might be achieved biochemically, via selective binding of polymerases and depolymerases, or mechanically, because k-fiber microtubules are coupled through a shared load that influences their growth. Here, we use a novel dual laser trap assay to show that microtubule pairs growing <em>in vitro</em> are coordinated by mechanical coupling. Kinetic analyses show that microtubule growth is interrupted by stochastic, force-dependent pauses and indicate persistent heterogeneity in growth speed during non-pauses. A simple model incorporating both force-dependent pausing and persistent growth speed heterogeneity explains the measured coordination of microtubule pairs without any free fit parameters. Our findings illustrate how microtubule growth may be synchronized during mitosis and provide a basis for modeling k-fiber bundles with three or more microtubules, as found in many eukaryotes.</p>
Dataset used in the publication entitled "Multi-Point Method using Effective Demodulation and Decomposition Techniques allowing Identification of Disturbing Loads in Power Grids"
<p>Dataset obtained from experimental research carried out in the prepared laboratory setup and information on the performed numerical simulation studies. Based on the dataset, the proposed new method of identification of sources of voltage fluctuation has been validated in the publication: Kuwałek P., Wiczyński G., Multi-Point Method using Effective Demodulation and Decomposition Techniques allowing Identification of Disturbing Loads in Power Grids. The description of the prepared laboratory setup is presented in this publication. The research results are part of the work under the project entitled "Voltage fluctuation diagnostic focused on identification and localization disturbing loads in power grids" funded by the National Science Centre, Poland - 2021/41/N/ST7/00397.</p>
SWAT river water, TN & TP loads to Limfjorden under climate change scenarios (Delta change) + baseline SWAT loads 2009-2018. Paper ". Impacts of climate change on water quality, benthic mussels and suspended mussel culture in a shallow, eutrophic estuary by Maar et al. Heliyon,
<p>SWAT river water, TN & TP loads to Limfjorden under climate change scenarios (Delta change) + baseline SWAT loads 2009-2018 </p>
A Novel Laboratory Technique for Measuring Grain Size Specific Transport Characteristics of Bed Load Pulses
<p>We present a novel, time-efficient and non-destructive laboratory technique to investigate grain size specific transport characteristics of bed load pulses. The method consists of a through-water, high-resolution image acquisition followed by the application of a supervised color classification algorithm (Gaussian Maximum Likelihood Classification). Quality assessment based on a confusion matrix approach and basic random sampling showed a high classification performance. By statistically analyzing the temporal and spatial color distribution of the experimental reach, characteristic parameters to describe the propagation behavior were determined. The analyzed bed load pulse consisted of five different grain size classes of dyed quartz sand and gravel, each having a unique color. The initial experimental bed was uni-colored and contained the same size fractions as the augmented pulse.</p>
Net load profile for a 10 MWh hydrogen storage system
<p><i>Subject: <strong>Energy</strong></i></p><p><i>Specific subject area: <strong>Hydrogen Storage Modelling</strong></i></p><p><i>Data format: <strong>Raw</strong></i></p><p><i>Data source: <strong>Simulation </strong></i></p><p><i>Data format: <strong>Table</strong></i></p><p><i>Type of data: <strong>Timeseries </strong></i></p><p><i>Date format:<strong> YYYY-MM-GG hh:mm:ss</strong></i></p><p><i>Resolution: <strong>1 hour</strong></i></p><p><i>Units: <strong>Watt [W]</strong></i></p><p> </p><p><strong>Description</strong></p><p>This dataset encompasses 102 net-load, each serving as a guide for either charging or discharging a hydrogen energy storage system with a 0.4 roundtrip efficiency. These profiles correspond to a variety of power energy services.</p><p>Two primary characteristics distinguish each power energy service in the dataset:</p><ul><li>The length of the discharge period refers to the duration over which the stored energy is released.</li><li>The number of charge/discharge cycles within a year indicates how often the service is delivered.</li></ul><p>Although these characteristics vary among the different services, the energy fed to the storage remains constant at 10 MWh per cycle. The unique aspect is the rate at which this stored energy is delivered to fulfill varying power demands, which differs according to each service's specific profile.</p><p>In terms of interpreting the net-load profiles:</p><ul><li>A positive value in a profile signifies a phase of charging, indicating that excess generation is being stored.</li><li>A negative value, on the other hand, denotes a discharge phase, where the storage system delivers a power energy service.</li></ul>
Effect of older age and/or ACL injury on the dose–response relationship between ambulatory load magnitude and immediate load-induced change in serum cartilage oligomeric matrix protein
<p>The data presented here was used in the models in the pulication doi <a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.jshs.2024.100993" target="_blank" rel="noreferrer noopener"><span><span>https://doi.org/10.1016/j.jshs.2024.100993</span></span></a>.</p> <p>The purpose of this study was to assess the influence of age, anterior cruciate ligament (ACL) injury, and sex on resting sCOMP concentration, on the immediate load-induced sCOMP kinetics after a 30-minute treadmill walking stress, and on the dose-response relationship between ambulatory load magnitude and the load-induced sCOMP change.</p> <p>Overall, data of 85 participants in four groups (20–30 years healthy, HEA<sub>20–30</sub>, n=24; 20–30 years ACL-injured, ACL<sub>20–30</sub>, n=23; 40–60 years healthy, HEA<sub>40–60</sub>, n=23; 40–60 years ACL-injured, ACL<sub>40–60</sub>, n=15) were included in this dataset. ACL injured participants suffered from an ACL injury 2-10 years prior to inclusion. The dateaset includes, patient data and serum cartilage oligomeric matrix protein (sCOMP) concentration measured on three testdays (m1, m2, m3) immediately before (t0) and immediately after 30 minutes of treadmill walking (t1) where the ambulatory loads were 80% bodyweight (BW), 100% BW or 120% BW (block randomized order). This dateset represents a subset of data collected in the parent study.</p> <p>The detailed experimental protocol of the parent study has been described in Herger, S., Vach, W., Nüesch, C., Liphardt, A. M., Egloff, C., & Mündermann, A. (2022). Dose-response relationship of in vivo ambulatory load and mechanosensitive cartilage biomarkers—The role of age, tissue health and inflammation: A study protocol. <em>PLoS One, 17</em>(8), e0272694. <a href="https://doi.org/10.1371/journal.pone.0272694">https://doi.org/10.1371/journal.pone.0272694</a></p>
Operating diagram of larvae hatching module, this installation was used to determine the optimum larvae load during the rearing process and provided additional space for rearing several thousand larvae. It consists of nine 20-litre tanks with a glass panel along the front. They are fitted with an inlet supplying filtrated water at a rate of 100 l/h and an individual air inlet. 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 larvae hatching module, this installation was used to determine the optimum larvae load during the rearing process and provided additional space for rearing several thousand larvae. It consists of nine 20-litre tanks with a glass panel along the front. They are fitted with an inlet supplying filtrated water at a rate of 100 l/h and an individual air inlet.
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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.