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
Select a community to browse its collections.
Recent Submissions
Dataset for publication ``A bin-resolved statistical framework for comparing particle size distributions''
(Technische Universität Bergakademie Freiberg, 2026-07-23) Mitra, Rahul
This dataset accompanies the study introducing the Difference Significance Profile (DSP), a statistically rigorous framework for bin-resolved comparison of particle size distributions (PSDs). It contains particle-level size measurements obtained by in-line SOPAT imaging of spray-dried alumina powders, together with all processed data required to reproduce the statistical analyses presented in the associated publication. The repository includes raw particle-size data, common binned PSDs, probability differences, bin-wise DSP statistics, bootstrap calibration results, covariance matrices, and comparison-level summary statistics for two experimental scenarios: (i) powders produced under different spray-drying temperatures (120 °C and 145 °C) and (ii) repeated experiments under identical conditions (120 °C) to assess repeatability. Additionally, mercury intrusion porosimetry measurements for the two temperature conditions are provided to support the physical interpretation of the observed PSD differences. The dataset enables complete reproduction of the DSP analysis, facilitates benchmarking against alternative PSD comparison methods, and provides a reusable resource for statistical analysis of particle size distributions in particle technology and related fields.
Structure and bonding of rare-earth pnictide chalcogenides REBiTe and RESbS with RE = La, Ce, Pr, Nd
(Universität Leipzig, 2026-07-16) Zahn, Franziska; Benndorf, Christopher
This data set contains the data shown in the figures of the Research article 'Structure and bonding of rare-earth pnictide chalcogenides REBiTe and RESbS with RE = La, Ce, Pr, Nd'
Atomic scale structure and bond stretching force constants in stoichiometric and off-stoichiometric kesterites
(Universität Leipzig, 2026-07-14) Ritter, Konrad; Gurieva, Galina
This contains the data from figures and tables in: https://doi.org/10.1063/5.0169755 .
Data and simulations for green hydrogen development in Cameroon
(Technische Universität Bergakademie Freiberg, 2026-07-14) Brumme, Anja; Golub, Alexander; Markandya, Anil; Rübbelke, Dirk
We examine the conditions and consequences of establishing green hydrogen facilities in Cameroon. Using publicly available data, we develop a normative numerical model to identify potential trajectories for macroeconomic and environmental indicators. This dataset contains raw and processed data as well as simulation results and sensitivity analyses of key parameters.
Corrosion and Process Analysis of a Preoxidized MgO Recyclate-based Cermet Anode in Laboratory-Scale Na-Cryolite Molten Salt Electrolysis of Aluminum at 1000 °C
(Technische Universität Bergakademie Freiberg, 2026-07-14) Adamczyk, Alexander; Hossain, Farhan; Garcia Paz, Felipe A.; Yaroshevskyi, Serhii; Vogt, Daniel; Aneziris, Christos G.; Charitos, Alexandros
The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite-based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon-free MgO–steel cermet anode derived from refractory recycling during laboratory-scale Na-cryolite electrolysis at 1000°C, focusing on the effect of a pre-oxidation treatment on its corrosion behavior. In the as-sintered state, MgO grains are mechanically bonded to a 316L steel matrix with interfacial porosity that limits corrosion resistance. Pre-oxidation at 900°C for 24 h forms a dense Mg–M–O (M=Fe, Cr) oxide-rich surface layer, sealing pores and improving resistance to cryolite infiltration, albeit at the cost of reduced electrical conductivity, which translated into an overall higher cell voltage compared to the as-sintered state. During electrolysis, this layer degrades under anodic polarization, O2 evolution, and fluorination. The surface transforms into a Fe–O-rich magnetite layer (Fe3O4), while a Cr-containing oxide and an in situ Mg–Fe–O transition zone form beneath, maintaining partial protection. Overall, pre-oxidation effectively delays electrolyte penetration by converting MgO into new oxide phases but introduces conductivity losses and surface instability. The results highlight both the potential and limitations of MgO-based cermet anodes for sustainable aluminum production.