Helmholtz Institute Freiberg for Resource Technology

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    1328 research outputs found

    Design guidelines for efficient thermoelastic harvesting of low-grade waste heat

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    Data publication for the FEM-simulation study entitled "Design guidelines for efficient thermoelastic harvesting of low-grade waste heat" by Bruno Neumann and Sebastian Fähler. The attached archive contains a readme file to explain the structure of the data and where it can be found

    Data publication on positrons as micro probes to study Water-Dependent Free Volume of Wood Cell Walls: A Preliminary Study

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    This dataset comprises positron annihilation lifetime spectra, data on the relative humidity used, as well as the results of the analysis (including the determined positron lifetimes and free volume)

    Data publication: Fabrication of palladium-enriched metallic structures by direct focused He+ and Ne+ beam nanowriting from organometallic thin films: a com- parison with Ga+ and e− beams

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    All Images produced by the Helium Ion Microscope (*.czi) including the pattering files created by NPVE from FIBICS (tif and xml

    Coupled dissolution and clogging processes alter the fluid flow field in sandstones beyond the pore scale - PET and µCT data

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    Data on a tomographic study of leaching processes on a Berea sandstone as supplemental information of the publication "Coupled dissolution and clogging processes alter the fluid flow field in sandstones beyond the pore scale" by Jonas Schabernack, Johannes Kulenkampff, and Cornelius Fischer, to be submitted to Earth and Planetary Science Letters (https://www.sciencedirect.com/journal/earth-and-planetary-science-letters). The data consists of BA6_312h_Concentration_65x65x66x40_double.raw: Time dependent activity concentrations (MBq/voxel) derived from 40 PET frames with frame length = 300 s, voxel size = 1.15 mm, measurement after a leaching period of 312h. Format: 4D-array of double, x=1:65, y=1:65, z=1:66, t:1:40. BA6_1320h_Concentration_65x65x61x40_double.raw: Time dependent activity concentrations (MBq/voxel) derived from 40 PET frames with frame length = 300 s, voxel size = 1.15 mm, measurement after a leaching period of 1320h. Format: 4D-array of double, x=1:65, y=1:65, z=1:61, t:1:40. BA6_312h_Flow Rate_65x65x66x1_double.raw: Magnitude of flow rate (mm3/s) from flowfield reconstruction of 1. Format: 3D-array of double, x=1:65, y=1:65, z=1:66. BA6_1320h_Flow Rate_65x65x61x1_double.raw: Magnitude of flow rate (mm3/s) from flowfield reconstruction of 2. Format: 3D-array of double, x=1:65, y=1:65, z=1:61. BA6_mag_1_01.raw.corrected.view.raw: µCT of the inlet section before leaching as normalized graylevel data, voxel size = 10.032 µm. Format: 3D-array of UInt16, x=1:2446, y=1:2450, z=1:1852. BA6_mag_1_after_10u_01_to_befor.diff.view.raw: difference image of matched graylevels after-before leaching, voxel size = 10.032 µm. Format: 3D-array of (signed) Int16, x=1:2446, y=1:2450, z=1:1852.The project received funding from the BMBF, grant number 03G0900A

    FVV1455: CFD Simulation of Droplet Separators

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    For industrial applications, the two-fluid model is preferred due to its efficient modelling of small-scale interfaces. Whereas, a thin film model, based on a long wave approximation, is used for the unresolved interfaces to obtain the film features by solving the 2D Navier-Stokes equations for wall films. Within the project, the target is to develop an experimentally validated 3D-CFD model to investigate the separation efficiency of droplet separators for fuel cell systems. A hybrid model is developed, which couples the two-fluid model with a thin film model via mass transfer terms for droplet deposition, droplet entrainment and film separation. A two-way coupling between droplets and the thin film is established using mass and momentum source terms, derived analytical and from available experiments. The droplet separator is an essential component of an automotive fuel cell system that segregates a significant amount of liquid fractions from the air-water mixture. The flow dynamics inside a droplet separator consist of a dispersed gas and liquid with a wall adhered thin liquid film. The modelling is divided into the following stages due to the complex fluidic phenomenon inside a generic droplet separator: Droplet deposition model, Film separation model, Film transition model, and Population balance model. The numerical simulations are validated and fine-tuned with experiments carried out at HZDR.The research project was self-financed (FVV funding no. 1455) by the FVV e.V

    Data publication: Reversing Lanmodulin's Metal-binding Sequence in Short Peptides Surprisingly Increases the Lanthanide Affinity

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    Data on which the figures and findings of the article are based Link to the publilcation: https://doi.org/10.1002/anie.20251045

    Data publication: The fate of fluvially-deposited organic carbon during transient floodplain storage

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    The data set contains all relevant luminescence measurement data used in the corresponding article: Scheingross et al. 2021. The fate of fluvially-deposited organic carbon during transient floodplain storage. EPSL 561, 116822, doi: 10.1016/j.epsl.2021.116822

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