Zobrazeno 1 - 10
of 25
pro vyhledávání: '"David Franzen"'
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 6, Iss 4, Pp n/a-n/a (2023)
Abstract North Dakota is a transitional semiarid region with annual precipitation in the eastern part of the state of about 50–55 cm, mostly from rainfall. The moisture demand from interseeding cover crops into standing corn (Zea mays) early in the
Externí odkaz:
https://doaj.org/article/d1f61ca9620848d88353a986e7a973dd
Autor:
Melanie Cornelia Paulisch, Marcus Gebhard, David Franzen, André Hilger, Markus Osenberg, Nikolay Kardjilov, Barbara Ellendorff, Thomas Turek, Christina Roth, Ingo Manke
Publikováno v:
Materials, Vol 12, Iss 17, p 2686 (2019)
Operando laboratory X-ray radiographies were carried out for imaging of two different silver-based gas diffusion electrodes containing an electroconductive Ni mesh structure, one gas diffusion electrode composed of 95 wt.% Ag and 5 wt.% polytetrafluo
Externí odkaz:
https://doaj.org/article/3a4ea8c21ddc41308a90d9c2528fed1d
Publikováno v:
ISPRS International Journal of Geo-Information, Vol 8, Iss 4, p 196 (2019)
Topographic features impact biomass and other agriculturally relevant observables. However, conventional tools for processing digital elevation model (DEM) data in geographic information systems have severe limitations. Typically, 3-by-3 window sizes
Externí odkaz:
https://doaj.org/article/4ed5ef30f4184b1bb1d5ef8896acc139
Autor:
Marcus Gebhard, Melanie Paulisch, André Hilger, David Franzen, Barbara Ellendorff, Thomas Turek, Ingo Manke, Christina Roth
Publikováno v:
Materials, Vol 12, Iss 8, p 1275 (2019)
Oxygen-depolarized cathodes are a novel concept to be used in chlor-alkali electrolysis in order to generate significant energy savings. In these porous gas diffusion electrodes, hydrophilic and catalytically active microsized silver grains and a hyd
Externí odkaz:
https://doaj.org/article/4eae03d7d903465c98a776b25f42219b
Publikováno v:
Crops & Soils. 55:4-11
Autor:
Melanie Paulisch, Marcus Gebhard, Barbara Ellendorff, Shashidhara Marathe, David Franzen, André Hilger, Ingo Manke, Thomas Turek, Christina Roth, Markus Osenberg, Christoph Rau
Publikováno v:
ACS Applied Energy Materials. 4:7497-7503
Understanding how gas diffusion electrodes are working is crucial to improve their performance and cost efficiency. One key issue is the electrolyte distribution during operation. Here, operando synchrotron imaging of the electrolyte distribution in
Autor:
Ingo Manke, Corina Andronescu, Wolfgang Schuhmann, Melanie Paulisch, Stefan Dieckhöfer, Denis Öhl, Thomas Turek, David Franzen, Stefan Barwe
Publikováno v:
ChemSusChem. 12:2732-2739
Electrocatalytically active materials on the industrial as well as on the laboratory scale may suffer from chemical instability during operation, air exposure, or storage in the electrolyte. A strategy to recover the loss of electrocatalytic activity
Autor:
Ingo Manke, Markus Osenberg, André Hilger, Thomas Turek, Volker Schmidt, Matthias Neumann, David Franzen
Publikováno v:
Computational Materials Science. 156:325-331
A pluri Gaussian model for three phase microstructures is presented and relationships between model parameters and microstructure characteristics are discussed. In particular, analytical formulas for two point coverage probability functions in terms
The electrolyte distribution is a central point of discussion for understanding the processes inside gas-diffusion electrodes (GDE) for the oxygen reduction reaction in highly alkaline media. During first radiographic operando synchrotron experiments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49e7f033209b15d034145062fddffc21
Autor:
Thomas Turek, Ulrike Krewer, Maximilian Röhe, Barbara Ellendorff, David Franzen, Fabian Kubannek
Publikováno v:
Electrochimica Acta, 389, Art.-Nr.: 138693
Silver based oxygen depolarized cathodes (ODC) are a promising technology to reduce the specific electrical energy demand of chlor-alkali electrolysis by around 30 %. Here we present the first modeling approach of an ODC for evaluating the influence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::149205dfaa4be60be5e0b6de2bed265a
https://publikationen.bibliothek.kit.edu/1000135987/149928270
https://publikationen.bibliothek.kit.edu/1000135987/149928270