Find research datasets worth reusing

opencc-by-4.0Nov 2021View details →

Self-synchronized cost-effective time-resolved measurements at x-ray free-electron lasers with femtosecond resolution

In compliance with guidelines from SNSF (Swiss National Science Foundation), we upload the raw data that belongs to a publication we submitted to Physical Review Research. The dataset also contains the analysis scripts used to produce the plots we show in the publication. Our software is attached to the dataset. An installation of the well known ELEGANT code is required to run it. Shortly after upload of the first version of this dataset, a bug was found in the analysis software. The second version contains the corrected software.

opencc-by-4.0Dec 2020View details →

EduRa database: room models based on room acoustic measurements in primary and preschools

This database provides five representative rooms in primary schools and preschools for acoustic simulations. A set of (binaural) room impulse responses (RIRs) simulated using an adult and a child artificial head are included for each room. Room acoustic measurements were carried out in Aachen’s primary schools and preschools, where 8 classrooms, 10 playrooms, 3 gyms, 3 multi-purpose rooms and 3 sports rooms were assessed. The dimensions and room acoustic parameters were then clustered to achieve five representative sceneries. Shoebox models with little furniture were created using the average dimension of each cluster, and room acoustic simulations yielding for the average reverberation time of each cluster were done to obtain the (binaural) RIRs.

opencc-by-4.0Dec 2020View details →

Local to regional methane emissions from the Upper Silesia Coal Basin (USCB) quantified using UAV-based atmospheric measurements

Raw data for Andersen et al., 2021 (Local to regional methane emissions from the Upper Silesia Coal Basin (USCB) quantified using UAV-based atmospheric measurements)

opencc-by-4.0Sep 2021View details →

Estimation of sulfuric acid concentrations using ambient ion composition and concentration data obtained by ion mass spectrometry measurements (APi-TOF)

The dataset has been used to estimate the sulfuric acid concentration from APi-TOF data. Using the bisulfate ion, the sulfuric acid molecule clustered with the bisulfate ion (dimer) and the trimer, we were able to determine the daytime concentration of sulfuric acid with the concentration of ambient ions, including the condensation sink, ion-ion recombination and collision rate of HSO4- with H2SO4.

opencc-by-4.0May 2021View details →

Permittivity of AuAg alloys along with calculations and measurements of the alloyed Fano-resonant structures

Here I present the data corresponding to the manuscript "Low temperature annealing method for fabricating alloy nanostructures and metasurfaces: Unlocking a novel degree of freedom" (arXiv:2105.02461). In this work, I have provided a technique of alloying AuAg at low temperature. Here I present the measured ellipsometric data of the AuAg alloys alloyed at low temperatures and measurements of the single structure AuAg alloyed 4-rod Fano-resonance nanostructures. I have also provided the calculations of the Fano-resonant structures using the permittivity of the Rioux model as well as well as the permittivity obtained from the Rioux model. Each .zip file is associated with a Readme file explaining everything in greater details.

dryad36/100

Genetic and fitness measurements of Brighamia accessions for APPS

Premise of the study: Living collections maintained for generations are at risk of diversity loss, inbreeding, and adaptation to cultivation. To address these concerns the zoo community uses pedigrees to track individuals and implement crosses that maximize founder contributions and minimize inbreeding. Using a pedigree management approach in an exceptional plant, we demonstrate how conducting such strategic crosses can minimize genetic issues that have arisen under current practices. Methods: We performed crosses between these collections and compared the fitness of progeny, including plant performance and reproductive health. We genotyped the progeny and paternal accessions to measure changes in diversity and relatedness within and between accessions. Results: The mean relatedness among individuals of an accession, suggests they are full siblings. As a result there was high inbreeding and low diversity within an accession, although less so among accessions. Progeny from the wider crosses had increased genetic diversity, while selfed accessions were smaller and less fertile. Discussion: Institutions which hold exceptional species should consider how diversity is maintained within their collections. Implementing a pedigree-based approach to managing reproduction of ex situ plants will slow the inevitable loss of genetic diversity and in turn, result in healthier collections.

opencc-zeroDec 2021View details →

Adult male baseball pitchers anthropometric measurements and pitching velocity in tryout settings

In this study, we adopted field tests executed using affordable equipment in a tryout event for a professional baseball team in Taiwan, 2019. We have only half day to test 64 players, and the result of measurement are used to develop a model for predicting pitching velocity of  amateur adult pitchers (age: 23.9 ± 2.8 years; height: 180.3 ± 5.9 cm; weight: 81.4 ± 10.9 kg) . The measurements and tests in tryout settings should be easy to implement, take short time, do not need high skill levels, and correlate to the pitching velocity. The outcome measures included maximum external shoulder rotation, maximum internal shoulder rotation, countermovement jump (CMJ) height, 20-kg loaded CMJ height, 30-m sprint time, height, age, and weight tests.

Tutorial "Fundamentals of the laser flash thermal diffusivity measurements"

E-learning module about the fundamentals of the laser flash thermal diffusivity measurements which is part of a tutorial series prepared in the framework of the Hi-TRACE project.

Tutorial "LFA front side measurement"

E-learning module about front side measurements using the laser flash method which is part of a tutorial series prepared in the framework of the Hi-TRACE project.

Tutorial "Uncertainty assessment for thermal diffusivity measurement by laser flash method"

E-learning module about the assessment of uncertainty associated with thermal diffusivity measurement performed at high temperature by the laser flash method. Part of a tutorial series prepared in the framework of the Hi-TRACE project.

opencc-by-4.0Nov 2021View details →

Fitness measures of seed progeny from seven natural populations of Campanula glomerata.

Fitness (rosette diameter in cm) and HL for seed progeny of seven wild populations of Campanula glomerata from southern Belgium and north-eastern France. For details see Van Rossum et al. (2022) in Frontiers in Conservation Science.

dryad36/100

Morphometric trait measurements of Arctic char in foothill lakes of arctic Alaska

Polymorphism facilitates coexistence of divergent morphs (e.g., phenotypes) of the same species by minimizing intraspecific competition, especially when resources are limiting. Arctic char (Salvelinus sp.) are a Holarctic fish often forming morphologically, and sometimes genetically, divergent morphs. In this study, we assessed the morphological and genetic diversity and divergence of 263 individuals from seven populations of arctic char with varying length-frequency distributions across two distinct groups of lakes in northern Alaska. Despite close geographic proximity, each lake group occurs on landscapes with different glacial ages and surface water connectivity, and thus were likely colonized by fishes at different times. Across lakes, a continuum of physical (e.g., lake area, maximum depth) and biological characteristics (e.g., primary productivity, fish density) exists, likely contributing to characteristics of present-day char populations. Although some lakes exhibit bimodal size distributions, using model-based clustering of morphometric traits corrected for allometry, we did not detect morphological differences within and across char populations. Genomic analyses using 15,934 SNPs obtained from genotyping-by-sequencing demonstrated differences among lake groups related to historical biogeography, but within lake groups and within individual lakes, genetic differentiation was not related to total body length. We used PERMANOVA to identify environmental and biological factors related to observed char size structure. Significant predictors included water transparency (i.e., a primary productivity proxy), char density (fish·ha-1), and lake group. Larger char occurred in lakes with greater primary production and lower char densities, suggesting less intraspecific competition and resource limitation. Thus, char populations in more productive and connected lakes may prove more stable to environmental changes, relative to food-limited and closed lakes, if lake productivity increases concomitantly. Our findings provide some of the first descriptions of genomic characteristics of char populations in arctic Alaska, and offer important consideration for the persistence of these populations for subsistence and conservation.

opencc-zeroJan 2022View details →

Results of statistical analyses of the comparison of phosphorous measurement laboratory methods

The study in the related article compares the phosphorus (P) analysis methods of ammonium lactate (AL), Mehlich 3 (M3); water extraction (P-WA(P)&P-WA(PO4)), cobalt hexamine (CoHex) and X-ray fluorescence (XRF, as an estimate of total soil P). The ratio of the P-content/XRF was calculated and compared with the whole dataset first. Based on the comparison of all the data there were significant differences between the results of P-WA(P) and P-WA(PO4) vs M3 and AL, CoHex vs M3 and CoHex vs AL methods (p<0.001). The influencing factors were also analysed for a more in-depth understanding of their role (CaCO3-content, pH, soil texture and clay content). The file contains the results of the statistical analyses.

WWV and CHU Eclipse Frequency Measurement

Recordings of WWV (2.5 MHz, 5.0 MHz) and CHU (3.33 MHz) for the December 2021 Eclipse Festival of Frequency Measurement Name, Callsign: William Breidenthal, KE6XO Latitude and Longitude: 40°03'33"N 105°12'32"W   Elevation: 1564 meters Start time of the analysis: November 31, 2021 07:04:56 UTC Stop time of the analysis: January 12, 2022 08:00:00 UTC GPSDO: Yes Hardware Description: <ul> <li>Antenna: MLA-30+ Magnetic Loop</li> <li>Antenna pointing direction: North/South</li> <li>Receiver Type: Ettus Research USRP2 with BasicRX Daughterboard</li> <li>Frequency reference type: GPSDO 10 MHz (Masterclock MCR1000)</li> <li>Frequency Measurement Technique:<a href="https://github.com/ccera-astro/wwv_doppler"> ccera-astro/wwv_doppler</a> with GNU Radio</li> </ul> Notes: Measurements recorded 70 km away from WWV in Boulder, CO. Some data is missing due to power outages. wwv_doppler was modified to add a 3rd channel to simultaneously record CHU.

A dataset of proton kinetic-scale current sheets selected at 1 AU using Wind spacecraft measurements

This is a dataset of proton kinetic-scale current sheets selected at 1 AU using 11 Samples/s magnetic field measurements aboard Wind spacecraft. The current sheets were selected using Partial Variance Increments method.  The detailed analysis of this dataset can be found at https://arxiv.org/abs/2112.15256v1 The first column gives a CS index number, the second panel gives a date in the year/month/day format, the last two columns give  temporal positions of the left and right boundaries of a CS. These moments of times are in seconds from the beginning of the day indicated in the second column.

opencc-by-4.0Oct 2021View details →

Radiocarbon and 13C measurements from Joshua Tree National Park, USA

These data include radiocarbon and 13C measurements made on surface soil and incubations from samples taken from the Pinto Basin N amendment experiments started by Edith B. Allen and collaborators in Joshua Tree National Park. The site and experiment description can be found in: Allen, E. B., L. E. Rao, R. J. Steers, A. Bytnerowitcz, and M. E. Fenn. 2009. Impacts of atmospheric nitrogen deposition on vegetation and soils in Joshua Tree National Park. Pages 78–100 in R. H. Webb, L. F. Fenstermaker, J. S. Heaton, D. L. Hughson, E. V. McDonald, and D. M. Miller, editors. The Mojave Desert: Ecosystem processes and sustainability. University of Nevada Press, Las Vegas, Nevada, USA. Samples were taken and  processed by Nicole M. Nowinski at the WM Keck Carbon Cycle AMS facility at UC Irvine. An image of the site can be found at this web site: https://www.nps.gov/articles/parkscience32_2_64-66_bell_allen_3838.htm The associated ISRaD Template Information File provides the names and descriptions of all fields.

opencc-by-4.0Nov 2021View details →

Dataset for publication: Test Bench and Frequency Response of a Magnetic Antenna used in GIS PD Measurements

Data set belonging to the <a href="https://ieeexplore.ieee.org/xpl/conhome/9611374/proceeding">2021 IEEE Electrical Insulation Conference (EIC)</a> paper with DOI: <a href="https://doi.org/10.1109/EIC49891.2021.9612372">10.1109/EIC49891.2021.9612372</a> The authors preprint is available from Zendodo with DOI: <a href="https://doi.org/10.5281/zenodo.5815710">10.5281/zenodo.5815710</a>.  Mier Escurra, Christian; Mor, Armando Rodrigo Test Bench and Frequency Response of a Magnetic Antenna used in GIS PD Measurements

Comparing black-carbon- and aerosol-absorption-measuring instruments – a new system using lab-generated soot coated with controlled amounts of secondary organic matter

A preprint of the publication can be found here: <a href="https://amt.copernicus.org/preprints/amt-2021-214/">AMTD - Response of black carbon and aerosol absorption measuring instruments to laboratory-generated soot coated with controlled amounts of secondary organic matter (copernicus.org)</a> (doi.org/10.5194/amt-2021-214). The files correspond to the raw data sets used for Figures 3 and 4 of the aforementioned publication. The date and start/stop time of the measurements are listed in the file "overview_measurements".