Research Data Repository of Saxon Universities
OPARA is the Open Access Repository and Archive for Research Data of Saxon Universities.
Researchers of Saxon Universities can either publish their research data on OPARA, or archive it here to comply with requirements of funding acencies and good scientic practice, without public access.
You can find the documentation of this service at the ZIH Data Compendium websites. If you need suppourt using OPARA please contact the Servicedesk of TU Dresden.
Please note: The OPARA service was recently upgraded to a new technical platform (this site). Previously stored data will not be available here immediately. It can be found at the still active old version of OPARA. These stock data will be migrated in near future and then the old version of OPARA will finally be shut down. Existing DOIs for data publications remain valid.
Communities in OPARA
Select a community to browse its collections.
Recent Submissions
Item
Open Access
Dataset for "CFD Analysis of Mucus Bridge Instability and Breakup in the Vocal Folds"
(Technische Universität Bergakademie Freiberg, 2025-08-22) Heinrich, Martin
This data archive accompanies the research paper "CFD Analysis of Mucus Bridge Instability and Breakup in the Vocal Folds" by Heinrich et al. The archive contains OpenFOAM case setups, simulation scripts, and extracted visualization data for the multiphase Volume-of-Fluid CFD simulation of mucus bridge breakup during vocal fold phonation.
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Open Access
Revised: Unity Logs and Survey Data (collected) for "virtual Rod and Frame Test and gamified spatial orientation task"
(Technische Universität Dresden, 2025-08-14) Josupeit, Judith; Andrees, Fabienne; Greim, Leonore; Sanchez Rivas, Sarah
This is a revised version of the previous version: http://dx.doi.org/10.25532/OPARA-283
The current version increases accessibility to the research data as additional translations are used and delimiters for preprocessed data are unified.
"VR_RFT_Input" contains Unity-logs and survey data collected between 2022-2023 by J. Josupeit, L. Greim and S. Sanchez Rivas under the experiment title "Replication of Field-Dependency and Cybersickness". The data are structured in 3 folders for each the Unity logs of the virtual RFT "VR_RFT_RFT" and the gamified spatial orientation task "VR_RFT_City", as well as the demographic data of the LimeSurvey questionnaire "VR_RFT_Limesurvey". Aside the folders the experimental protocol and an overview text (Readme) file are included.
Associated research article: Josupeit, J. (2024). In rod we trust–The evaluation of a virtual rod and frame test as a cybersickness screening instrument. PLoS ONE, 19(11), Article e0313313. https://doi.org/10.1371/journal.pone.0313313
Item
Open Access
Dataset Supporting the Characterization of Slag from SOEL Interconnect Remelting
(Technische Universität Bergakademie Freiberg, 2025-08-13) Mongoljiibuu, Shine-Od
This dataset supports the manuscript titled “Chromium in Slag from SOEL Interconnects Remelting: Characterization and Recycling Potential”. The study focuses on characterizing the bulk composition, mineralogy, its distribution, and elemental distributions in slag generated during the remelting of Solid Oxide Electrolyzer (SOEL) interconnects. The data include X-ray Fluoroscence (XRF) data, X-ray Diffraction (XRD) pattern data, X-ray Computed Tomography (XCT) dataset, and Scanning Electron Microscopy (SEM)-based Mineral Liberation Analysis dataset.
Item
Open Access
Multiple superconducting transitions in Yb$_{3+x}$Co$_4$Sn$_{13-x}$
(Technische Universität Bergakademie Freiberg, 2025-07-31) Meret, Orlob; Levytskyi, Volodymyr; Tsirlin, Alexander; Kundys, Bohdan; Sturm, Elena; Leithe-Jasper, Andreas; Gumeniuk, Roman
Abstract of the accompanying article: In the Yb-Co-Sn system a Remeika phase Yb$_{3+x}$Co$_{4}$Sn$_{13-x}$ is found with solid solution extending within $0\le\,x\,\le0.5$. All these compounds crystallize with primitive cubic [space group $Pm\bar{3}n$, $a\approx9.54$ \AA] strongly disordered Sc$_{3}$Ir$_4$Si$_{13+x}$ type. Stoichiometric Yb$_3$Co$_4$Sn$_{13}$ is a superconductor with critical temperature $T_c\,=\,3.1(2)$\,K, lower- [$B_\mathrm{c1}=1.90(2)$\,mT] and upper [$B_\mathrm{c2}=2.16(5)$\,T] critical fields. The specific heat jump $\Delta c_p/\gamma T_c\,=\,1.72(9)$ together with the fact that $B_\mathrm{c2}(T_c)$ dependence is described by the Werthamer-Helfand-Hohenberg (WHH) model hint towards a conventional mechanism with a weak electron-phonon coupling. Although a more precise analysis is hampered by the presence of multiple superconducting transitions observed in the specific heat of this Remeika phase, the non-stoichiometric Yb$_{3.2}$Co$_4$Sn$_{12.8}$ reveals $T_c\,=\,2.4(2)$\,K and $B_\mathrm{c2}=4.79(9)$\,T exceeding the classical Pauli limit. Strong electron-phonon coupling in this superconductor is confirmed by the high value of the $\lambda_\mathrm{AD}=0.92(2)$ parameter determined from the Allen-Dynes formula. However, the electronic specific heat of Yb$_{3.2}$Co$_4$Sn$_{12.8}$ follows the exponential law [$c_\mathrm{el}(T)\propto e^{-\Delta(0)/k_\mathrm{B}T}$] and can be described by the $\alpha$-model [$\alpha\equiv\Delta(0)/k_\mathrm{B}T_c=2$] indicating this stannide to be a conventional BCS-superconductor. Both Yb$_{3+x}$Co$_{4}$Sn$_{13-x}$ ($x=0, 0.2$) compounds reveal complex phonon spectra with possible `rattling' behavior. They are also found to be metallic systems, some aspects of which can be described by a free electron gas model.
Item
Open Access
Photogrammetric data of spherical target test fields
(Technische Universität Dresden, 2025-07-22) Liebold, Frank
This data publication contains photogrammetric data of test fields of spheres.
Please download the zip files and extract them. There are three experiments:
1) Experiment 1 (in "experiment1.zip"): A test field with 5 x 5 white spheres on a black background. The spheres have diameters of 38 mm and 40 mm. The grid size is approximately 6 cm, see "sphere_ids_exp1.png". A bundle of nine images (see "image_orientations.png" in "test_images_and_camera_information_experiment1.zip") was recorded.
- "image_bundle_tif_experiment1.zip" contains the images with tif format. The images are also available in jpg format ("image_bundle_jpg99_experiment1.zip").
- "image_ellipse_measurement_LoG7_starOperator_exp1.txt" contains the image measurements with the ellipse operator (star operator): id_image, id_sphere, ellipse center, semimajor and semiminor axes, inclination and error measures
- "image_ellipse_contourpoints_LoG7_starOperator_exp1.txt" contains the image measurements with the ellipse operator (star operator) with all ellipse contour points (id_image, id_sphere, x, y)
- The folder "3D_structured_light_scan" contains the results of a structured light scan using GOM ATOS scanner ( "sphere_measurement_GOM_ATOS_exp1.ply" with mesh, "spheres_3D_structured_light_scanner_cloudcompare_tab_exp1.txt" with extracted sphere center coordinates and radii as well as RMS of the residuals of the fit).
2) Experiment 2 (in "experiment2.zip"): See decription of experiment 1. In this case, there are 16 further spheres of 4 mm diameter on the test field, see "sphere_ids_exp2.png".
3) Experiment 3 (in "experiment3.zip"): Compared to experiment 1, there two scale bars are part of the measurements, see "image_orientations_exp3.png". There is also an image bundle ("image_bundle_tif_experiment3.zip" or "image_bundle_jpg99_experiment3.zip" and the image ellipse measurements ("image_ellipse_measurement_LoG7_starOperator_exp3.txt" and "image_ellipse_contourpoints_LoG7_starOperator_exp3.txt").
The 3D structured light scans are only done for the scale bars to measure radii and distances.