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.

Artwork based on 1, 2, 3, 4  @pixabay
 

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Recent Submissions

ItemOpen Access
Data for Composite superconducting orders and magnetism in CeRh2As2
(Technische Universität Dresden, 2026-05-29) Jakubczyk, Fabian
This archive contains the data plotted in the paper F. Jakubczyk, J. M. Link, C. Timm, Composite superconducting orders and magnetism in CeRh2As2, Phys. Rev. Res. (2026). For this paper, the interplay of the ordered phases in CeRh2As2 was investigated within a theoretical framework based on symmetry analysis combined with Bogoliubov--de Gennes and Landau methods. This approach accurately reproduces current experimental results for varying temperature as well as out-of-plane and in-plane magnetic field, both if the transition to a magnetic phase occurs below the superconducting critical temperature and if it occurs above. Calculations and plots of phase diagrams, free energy, order-parameter amplitudes and thermodynamic observables were carried out using Mathematica.
ItemPublic Metadata
GRK 2802: Interactions between Molten High-Silicon Electrical Steels and Carbon-Bonded MgO Refractories Based on Recyclates
(Technische Universität Bergakademie Freiberg, 2026-05-29) Neubert, Lukas; Bellé, Matheus Roberto; Yehorov, Anton; Mospan, Anhelina; Stadtmüller, Till M. J.; Sridhar, Seetharaman; Aneziris, Christos G.; Volkova, Olena
In the present study a comprehensive investigation of the interactions between different molten high-silicon electrical steels (3 to 6 mass-% silicon) in aluminum killed condition with conventional and recycled MgO–C refractories is conducted. Immersion tests are carried out in accordance with the standards for testing and assessment of corrosion of refractories by liquids (DIN CEN/TS 15 418). Various mechanisms are defined and described which determine the corrosion of the refractory material in addition to infiltration. Scanning electron microscopy including energy dispersive X-ray spectroscopy (EDX analysis) is conducted to identify wear reactions, material transfers and reaction products at the contact zones and in the infiltration layers. The theoretically possible infiltration length is calculated and the limited applicability of the equations known from the literature is discussed. The formation of calcium sulfides and on other crucible reactions that take place are considered. These provide information and at the same time they influence the interactions between refractory materials and liquid steel.
ItemPublic Metadata
GRK 2802: Population of Nonmetallic Inclusions in Liquid High-Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders
(Technische Universität Bergakademie Freiberg, 2026-05-29) Neubert, Lukas; Bellé, Matheus Roberto; Kerber, Florian; Gunasekar, Dinesh Kumar; Weddige, Hans-Jörn; Aneziris, Christos G.; Volkova, Olena
Nonmetallic inclusions (NMIs) are integral constituents of ferrous materials, but almost always have a negative impact on their properties. Therefore, it is best to implement strategies during production to avoid NMIs as much as possible or at least control their formation. To gain a better understanding of these mechanisms, this study investigated the population of nonmetallic inclusions in liquid high-silicon electrical steel (Si 3 mass-%) depending on the contact with different MgO–C refractories. Both conventional refractory materials and those containing MgO–C recyclate and environmentally friendly binder systems, such as collagen, fructose, and lignin, were considered. Immersion tests were carried out for 30min at a temperature of 1600°C in accordance with DIN CEN/TS 15418. Surface phenomena, diffusions reactions, and corrosion mechanisms occurring in the refractory materials were characterized after the tests using SEM and EDX analyses. The change in the chemical composition of the steels was determined using spark spectroscopy, and the NMI population was evaluated after the tests using an automated feature analysis (AFA).
ItemOpen Access
Farnesischer Stier – Rechter Hinterlauf des Stiers, Universität Leipzig, Antikenmuseum, G 661 – TF 40, high-poly
(Universität Leipzig, 2026-05-28) Michalski, Paula; Apelt, Joana
Dieser Datensatz enthält das High-Poly-Modell des rechten Hinterlaufs des Stiers aus der Gipsabformung des Farnesischen Stiers (G 661, TF 40). Das 3D-Modell basiert auf den hochaufgelösten Rohdaten und wurde durch Polygonreduktion optimiert. Dabei blieb die geometrische und visuelle Qualität erhalten, während die Dateigröße deutlich reduziert wurde.
ItemOpen Access
Farnesischer Stier – Rechter Vorderlauf des Stiers, Universität Leipzig, Antikenmuseum, G 661 – TF 41, high-poly
(Universität Leipzig, 2026-05-28) Michalski, Paula; Apelt, Joana
Dieser Datensatz enthält das High-Poly-Modell des rechten Vorderlaufs des Stiers aus der Gipsabformung des Farnesischen Stiers (G 661, TF 41). Das 3D-Modell basiert auf den hochaufgelösten Rohdaten und wurde durch Polygonreduktion optimiert. Dabei blieb die geometrische und visuelle Qualität erhalten, während die Dateigröße deutlich reduziert wurde.