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 OPARA manual websites. If you need suppourt using OPARA please contact the Servicedesk of TU Dresden.
Communities in OPARA
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Recent Submissions
GRK 2802: IMPACT OF SUSTAINABLE BINDERS BASED ON LIGNIN AND COLLAGEN ON THE VOLUME STABILITY AND MECHANICAL PROPERTIES OF MgO-C RECYCLATES
(Technische Universität Bergakademie Freiberg, 2026-09-21) Stadtmüller, Till Manon Jannis; Kerber, Florian; Moritz, Kirsten; Dudczig, Steffen; Kraushaar, Konstantin; Schemmel, Thomas; Hubálková, Jana; Gehre, Patrick; Aneziris, Christos G.
This study investigates sustainable binders based on lignin and collagen hydrolysate as substitutes for conventional binders in MgO-C refractories, with a particular focus on volume stability after thermal treatments. Collagen hydrolysate undergoes thermally induced decomposition of peptide chains while simultaneously forming a cross-linked network, accompanied by the release of H2O, CO2, and NH3. During coking, this network forms a partially ordered carbon network that provides high oxidation resistance, bulk density, and strength of the MgO-C material both at room and elevated temperatures, comparable to reference samples bonded by a conventional mixed binder based on novolak and Carbores P. However, the combination of gas formation and cross-linking leads, in small laboratory samples, to a volume increase without structural damage. In large-format bricks the longer diffusion paths cause an increase of internal gas pressure, resulting in macroscopic cracking. The variation of the graphite grade, the partial replacement of virgin fused MgO and graphite with MgO-C recyclate, and lignin addition reveals that porous channels facilitate gas release and thereby significantly improve volume stability.
The Influence of Biomass Cokes on the Microstructure and Thermal Shock Resistance of MgO-C Refractories
(Technische Universität Bergakademie Freiberg, 2026-09-21) Gehre, Patrick; Kapessov, Magzhan; Guhl, Stefan; Gräbner, Martin; Aneziris, Christos G.
In this study, biomass cokes from sunflower seed hull (SFSH) and wood pellets (WP) were added to a MgO-C batch (3 mass % C) to replace 1.1 mass % of graphite. After hardening and carbonizing the samples, the influence of the biomass cokes on the microstructure and thermal shock resistance was investigated. The replacement of flaky graphite by carbonized WP and SFSH reduced the bulk density and increased the apparent porosity after pressing and carbonization, but the degree was only marginal. This was confirmed by SEM investigations, where the biomass-coke containing samples exhibited a microstructure with a higher amount of pores between the fine MgO grains. The thermal shock resistance of the porous wood pellet coke
containing MgO-C is at the same level as the reference sample but not superior to it.
Development and evaluation of a reinforcement learning-based decision support system for mechanical ventilation in acute respiratory failure
(Technische Universität Dresden, 2026-09-12) Huhle, Robert
This data publication contains development (Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Local Ethical Committee Approval: BO-EK-423082021) and external validation data set (extracted and preprocessed from MIMIC-IV) for the developed first version of the IntelliLung-AI algorithm based on Reinforcement Learning. Data holds the input/output of the training, testing (development), as well as external validation pipeline as published in the GitLab repository (https://github.com/NIMI-research/rl-acute-respiratory-failure-dss).
PSOCT data of cervical enamel
(Technische Universität Dresden, 2026-09-10) Schmidt, Christian; Walther, Julia
This dataset presents polarization-sensitive optical coherence tomography (PSOCT) data acquired from cervical enamel near the cementoenamel junction (CEJ) of a human tooth. Measurements were performed using the Thorlabs Telesto PSOCT system, operating at a central wavelength of λ̄ = 1300 nm, with an axial resolution of 4.2 µm in water and a lateral resolution of 12.2 µm. The A-scan pixel size is 3.473 µm, with a spatial sampling of dx = 5 µm in the fast scan direction and dy = 5 µm in the slow scan direction. The dataset includes two separate CSV files per volume scan: one for the co-polarized (co) channel and one for the cross-polarized (cross) channel. Each file contains 1024 rows corresponding to the 1024 A-scan components, with 1000 columns representing individual A-scans forming a single B-scan. A total of 800 B-scans are included in the dataset. The complex-valued data represent the product of amplitude and complex phase, enabling advanced analysis such as quantitative phase imaging, birefringence mapping, and tissue characterization. This dataset supports the validation and further development of the sPST (simplified Polarization-Sensitive OCT Technique) method and serves as a valuable resource for research in dental materials science, early caries detection, and optical imaging of hard tissues.
Data corresponding to publication: "Field-driven phases in a three-dimensional twisted Kitaev model for CoNb2O6: Interplay of frustration and spin-orbit coupling" by T. Drechsler et al (2026)
(Technische Universität Dresden, 2026-09-04) Vojta, Matthias
This dataset contains the data corresponding to the figures in the publication T Drechsler, M. Vojta, "Field-driven phases in a three-dimensional twisted Kitaev model for CoNb2O6: Interplay of frustration and spin-orbit coupling", Phys. Rev. B (2026).