Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Nadja Ray"'
Publikováno v:
Artificial Intelligence in Geosciences, Vol 4, Iss , Pp 199-208 (2023)
In recent years, convolutional neural networks (CNNs) have demonstrated their effectiveness in predicting bulk parameters, such as effective diffusion, directly from pore-space geometries. CNNs offer significant computational advantages over traditio
Externí odkaz:
https://doaj.org/article/0b1876a9a73e407786ec3f4ff4310046
Publikováno v:
Frontiers in Soil Science, Vol 3 (2023)
Investigating plant/root-soil interactions at different scales is crucial to advance the understanding of soil structure formation in the rhizosphere. To better comprehend the underlying interwoven processes an explicit, fully dynamic spatial and ima
Externí odkaz:
https://doaj.org/article/5a730de026df4aa9b79952d271f716bd
Autor:
Andreas Rupp, Tom Guhra, Andreas Meier, Alexander Prechtel, Thomas Ritschel, Nadja Ray, Kai Uwe Totsche
Publikováno v:
Frontiers in Environmental Science, Vol 7 (2019)
Soil functions are closely related to the structure of soil microaggregates. Yet, the mechanisms controlling the establishment of soil structure are diverse and partly unknown. Hence, the understanding of soil processes and functions requires the con
Externí odkaz:
https://doaj.org/article/dda7026cd488432394c8b542e703bdc3
Discrete-Continuum Multiphase Model for Structure Formation in Soils Including Electrostatic Effects
Publikováno v:
Frontiers in Environmental Science, Vol 6 (2018)
Structure formation and self organization in soils determine soil functions and regulate soil processes. Mathematically based modeling can facilitate the understanding of organizing mechanisms at different scales, provided that the major driving forc
Externí odkaz:
https://doaj.org/article/fabd8c66659f416ca6917531c7a2ab2c
Autor:
Matthias Weber, Benedikt Prifling, Nadja Ray, Alexander Prechtel, Maxime Phalempin, Steffen Schlüter, Doris Vetterlein, Volker Schmidt
Effective diffusion is an important macroscopic property for assessing mass transport in porous media. Numerical computations on segmented 3D CT images yield precise estimates for diffusive properties. On the other hand, geometrical characteristics o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff4d9ba82934e704ebb88089b43245bc
https://doi.org/10.5194/egusphere-egu23-12421
https://doi.org/10.5194/egusphere-egu23-12421
We present a mechanistic, spatially and temporally explicit microscale model to investigate the interactions between a growing root, its exudates and the soil structure. Our model allows us to simultaneously simulate and study the dynamic rearrangeme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bddfc27e50753d60e1d18891f1f0aa92
https://doi.org/10.5194/egusphere-egu23-13567
https://doi.org/10.5194/egusphere-egu23-13567
Advanced imaging techniques now allow to take snapshots of soils even down to the nanoscale. Nevertheless, assessing the temporal evolution of elemental distributions, distinguishing different liquid phases and identifying dynamic microbial processes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::175f67425129193472c5e5c9abcd94d5
https://doi.org/10.5194/egusphere-egu23-13591
https://doi.org/10.5194/egusphere-egu23-13591
We present a spatially and temporally explicit mechanistic model for soil aggregation at the microscale. This consists of a cellular automaton model for the dynamic rearrangement of solid building units whose size and shape are derived from dynamic i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e456f6af3c5c06d06933c336172a9c1
https://doi.org/10.5194/egusphere-egu23-13407
https://doi.org/10.5194/egusphere-egu23-13407
Publikováno v:
Computational Geosciences. 26:545-570
We investigate reactive flow and transport in evolving porous media. Solute species that are transported within the fluid phase are taking part in mineral precipitation and dissolution reactions for two competing mineral phases. The evolution of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e41f11891c887f23d52f9304ee6e4d1e
https://doi.org/10.1007/s10596-022-10142-w
https://doi.org/10.1007/s10596-022-10142-w
Publikováno v:
Multiscale Modeling & Simulation. 20:433-461
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17a61c19072ca5e872dbdcd7d9c69509
https://doi.org/10.1137/20m1380648
https://doi.org/10.1137/20m1380648