Zobrazeno 1 - 10 of 15 pro vyhledávání: '"John Maximilian Köhne"'
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Akademický článek
Dye tracer and morphophysical properties to observe water flow in a Gleyic Luvisol Fluxo de água em um Gleyic Luvisol usando traçador e sua relação com as propriedades físicas e morfológicas do solo
Autor: Monica Martins Silva Salvador, Sigrid Köhne, John Maximilian Köhne, Bernd Lennartz, Paulo Leonel Libardi
Publikováno v: Scientia Agricola, Vol 68, Iss 2, Pp 160-166 (2011)
The understanding of the preferential water flow and solute transport is important with regard to losses of nutrients and pesticides that affect the quality of the groundwater or surface water resources. Experiments using the brilliant blue dye trace
Externí odkaz: https://doaj.org/article/f5d5599c6b8e4e719a6b5731c28e61e5
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2
Brief communication: Unravelling the composition and microstructure of a permafrost core using X-ray computed tomography
Autor: Jan Nitzbon, Damir Gadylyaev, Steffen Schlüter, John Maximilian Köhne, Guido Grosse, Julia Boike
Publikováno v: EPIC3The Cryosphere, 16(9), pp. 3507-3515, ISSN: 1994-0424
The microstructure of permafrost ground contains clues to its formation and hence its preconditioning to future change. We applied X-ray computed microtomography (CT) to obtain high-resolution data (Δx=50 µm) of the composition of a 164 cm long per
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cf169e8cc500e94c3e482ce3943d9cb
https://hdl.handle.net/10013/epic.814f276e-65a5-456b-a784-6fee787b7732
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3
Soil pore characteristics and gas transport properties of a no-tillage system in a subtropical climate
Autor: Renato Levien, Lars J. Munkholm, Mansonia Pulido-Moncada, Sheela Katuwal, Steffen Schlüter, Tiago Stumpf da Silva, John Maximilian Köhne, Marcelo Raul Schmidt, Michael Mazurana
Publikováno v: da Silva, T S, Pulido-Moncada, M, Schmidt, M R, Katuwal, S, Schlüter, S, Köhne, J M, Mazurana, M, Juhl Munkholm, L & Levien, R 2021, ' Soil pore characteristics and gas transport properties of a no-tillage system in a subtropical climate ', Geoderma, vol. 401, 115222 . https://doi.org/10.1016/j.geoderma.2021.115222
No-tillage system (NT) has been widely adopted around the world to restore the quality of soil structure in previously tilled soils, especially in tropical and subtropical climates. Our objective was to assess the legacy of chiseling in a NT in a sub
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dd31bc586d289fbfa2f3f5177c015a0
https://pure.au.dk/portal/da/publications/soil-pore-characteristics-and-gas-transport-properties-of-a-notillage-system-in-a-subtropical-climate(2c8ae784-3cb9-4288-8715-d205cb4308cf).html
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4
Applying Computed Tomography (CT) scanning for segmentation of permafrost constituents in drill cores
Autor: Guido Grosse, John Maximilian Köhne, Julia Boike, Damir Gadylyaev, Steffen Schlüter, Jan Nitzbon
Computed X-ray Tomography is a non-destructive technique that allows three-dimensional imaging of soil samples' internal structures, determined by variations in their density and atomic composition. This study's objective was to develop an image proc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07c6f1f95c8c31045f6683f9630dbaa6
https://doi.org/10.5194/egusphere-egu21-11395
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5
Microbial Degradation Rates of Natural Bitumen
Autor: John Maximilian Köhne, Daniel Köster, Michelle Kulbatzki, Lisa Voskuhl, Sadjad Mohammadian, S. Haque, Arne Meier, Rainer U. Meckenstock, Mark Pannekens, Ali Akbari
Publikováno v: Environmental Science & Technology
Microorganisms are present in nearly every oil or bitumen sample originating from temperate reservoirs. Nevertheless, it is very difficult to obtain reliable estimates about microbial processes taking place in deep reservoirs, since metabolic rates a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88d28600d4b937f1d3d77329624e4515
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85110275966
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6
Mobility of silver nanoparticles in porous media: The impact of biological interface, water saturation, and nanoparticle aging
Autor: Frederic Leuther, Laura Degenkolb, John Maximilian Köhne, George Metreveli, Sondra Klitzke, Hans-Jörg Vogel
The sulfidation and aging of silver nanoparticles (Ag-NPs) with natural organic matter (NOM) are major transformation processes along their pathway in wastewater treatment plants and surface waters. Although porous media, such as soils or riverbank f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f97a38158fa00ef89ca74708617232f
https://doi.org/10.5194/egusphere-egu2020-6630
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7
Transport and Retention of Sulfidized Silver Nanoparticles in Porous Media: The Role of Air-Water Interfaces, Flow Velocity, and Natural Organic Matter
Autor: John Maximilian Köhne, Hans-Jörg Vogel, George Metreveli, Frederic Leuther
The sulfidation and aging of silver nanoparticles (Ag-NPs) with natural organic matter (NOM) are major transformation processes along their pathway in wastewater treatment plants and surface waters. Although soils appear to be a sink for disposed Ag-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2098e2352e6f45ac30fed9b9416b6b66
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8
Biological soil crusts from different soil substrates harbor distinct bacterial groups with the potential to produce exopolysaccharides and lipopolysaccharides
Autor: Michael Schloter, Stefanie Schulz, Susanne Kublik, John Maximilian Köhne, Barbara Cania, Gisle Vestergaard, Thomas Fischer, Barbro Winkler, Andreas Albert
Publikováno v: Microb. Ecol. 79, 326-341 (2020)
Cania, B, Vestergaard, G A, Kublik, S, Köhne, J M, Fischer, T, Albert, A, Winkler, B, Schloter, M & Schulz, S 2020, ' Biological Soil Crusts from Different Soil Substrates Harbor Distinct Bacterial Groups with the Potential to Produce Exopolysaccharides and Lipopolysaccharides ', Microbial Ecology, vol. 79, pp. 326–341 . https://doi.org/10.1007/s00248-019-01415-6
Biological soil crusts (biocrusts) play an important role in improving soil stability and resistance to erosion by promoting aggregation of soil particles. During initial development, biocrusts are dominated by bacteria. Some bacterial members of the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fef296f3451d27a9f7f2e44537ae613
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=56701
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10
Coupled simulation of surface runoff and soil water flow using multi-objective parameter estimation
Autor: Jirka Šimůnek, Sophie Leguédois, John Maximilian Köhne, Pierre Benoit, Yves Le Bissonnais, Valérie Pot, Thomas Wöhling
Publikováno v: Journal of Hydrology
Journal of Hydrology, Elsevier, 2011, 403 (1/2), pp.141-156. ⟨10.1016/j.jhydrol.2011.04.001⟩
summary A comprehensive description of water flow in environmental and agricultural systems requires an account of both surface and subsurface pathways. We present a new model which combines a 1D overland flow model and the 2D subsurface flow HYDRUS-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2355e44864a38ed0787ffdc25571a915
https://doi.org/10.1016/j.jhydrol.2011.04.001
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