https://opara.zih.tu-dresden.de/xmlui/handle/123456789/1871 PARROT stands for an oPen Access aRchive for paRticle discrete tOmographic daTasets (https://parrot.tu-freiberg.de). As certainly not the most obvious acronym, the PARROT is supposed to represent the different expressions of particle properties. Just as a bird grasps individual discrete parts of its food with its beak, we would like to provide a repository of a significantly large number of discrete particles from various practically important particle systems. The implementation is some kind of pilot study which makes no claim to completeness - that in this case will never be possible. Rather, it should be about the general way of implementation. Which use cases exist in practice, which data and metadata are required for this, how can this be mapped in a database structure that allows users convenient access and generates added value? All data collections are results of tomographic measurements and data basis of the PARROT database. 2026-04-09T04:19:33Z https://opara.zih.tu-dresden.de/xmlui/handle/123456789/1884 Tomographic dataset of a particulate Soda-lime glass sample Ditscherlein, Ralf Soda-lime glass particle samples embedded in epoxy resin mixed with graphite nanoparticles as spacer and scanned with tomograph Zeiss Xradia Versa 510 Particle sample is segmented via a standard workflow in Fiji (ImageJ) and provided as "segmented.zip" Resulting discrete particles are stored within the PARROT database (https://parrot.tu-freiberg.de) 2021-01-01T00:00:00Z https://opara.zih.tu-dresden.de/xmlui/handle/123456789/1883 Tomographic dataset of a particulate Limstone sample Ditscherlein, Ralf Limestone particle samples embedded in wax and scanned with tomograph Zeiss Xradia Versa 510. Particle sample is segmented via a standard workflow in Fiji (ImageJ) and provided as "segmented.zip" Resulting discrete particles are stored within the PARROT database (https://parrot.tu-freiberg.de) 2021-01-01T00:00:00Z https://opara.zih.tu-dresden.de/xmlui/handle/123456789/1882 Tomographic dataset of a particulate Mica sample Ditscherlein, Ralf Mica particle samples embedded in wax and scanned with tomograph Zeiss Xradia Versa 510 Particle sample is segmented via a standard workflow in Fiji (ImageJ) and provided as "segmented.zip" Resulting discrete particles are stored within the PARROT database (https://parrot.tu-freiberg.de) 2021-01-01T00:00:00Z https://opara.zih.tu-dresden.de/xmlui/handle/123456789/1881 Tomographic dataset of a particulate Quartz sample Ditscherlein, Ralf Quartz particle samples embedded in wax and scanned with tomograph Zeiss Xradia Versa 510 Particle sample is segmented via a standard workflow in Fiji (ImageJ) and provided as "segmented.zip" Resulting discrete particles are stored within the PARROT database (https://parrot.tu-freiberg.de) 2021-01-01T00:00:00Z