2026-04-17T14:03:28Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/82622024-01-10T01:05:32Zcom_10259_6229com_10259_4534com_10259.4_106com_10259_2604col_10259_6230

Carpio, Ana b539a1aa-926d-49cc-8122-e1d0588259dd 600 Cebrián de Barrio, Elena 755 600 0000-0001-8389-0907 Vidal, Perfecto 9c44270a-635b-4159-afa8-3293c9f4947c 600 2024-01-09T11:31:40Z 2024-01-09T11:31:40Z 2019 0020-7462 http://hdl.handle.net/10259/8262 10.1016/j.ijnonlinmec.2018.10.012 Biofilms are bacterial aggregates encased in a self-produced polymeric matrix which attach to moist surfaces and are extremely resistant to chemicals and antibiotics. Recent experiments show that their structure is defined by the interplay of elastic deformations and liquid transport within the biofilm, in response to the cellular activity and the interaction with the surrounding environment. We propose a poroelastic model for elastic deformation and liquid transport in three dimensional biofilms spreading on agar surfaces. The motion of the boundaries can be described by the combined use of Von Kármán type approximations for the agar/biofilm interface and thin film approximations for the biofilm/air interface. Bacterial activity informs the macroscopic continuous model through source terms and residual stresses, either phenomenological or derived from microscopic models. We present a procedure to estimate the structure of such residual stresses, based on a simple cellular automata description of bacterial activity. Inspired by image processing, we show that a filtering strategy effectively smooths out the rough tensors provided by the stochastic cellular automata rules, allowing us to insert them in the macroscopic model without numerical instability. This research has been supported by MINECO grants No. MTM2014-56948-C2-1-P, No. MTM2017-84446-C2-1-R and No. PRX18-00112. application/pdf eng Elsevier International Journal of Non-Linear Mechanics. 2019, V. 109, p. 1-8 https://doi.org/10.1016/j.ijnonlinmec.2018.10.012 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Biofilm Poroelastic Von Kármán Thin film Cellular automata Total variation based filter Microbiología Matemáticas Microbiology Mathematics Biofilms as poroelastic materials info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion International Journal of Non-Linear Mechanics 109 1 8 THUMBNAIL Carpio-ijnm_2019.pdf.jpg Carpio-ijnm_2019.pdf.jpg IM Thumbnail image/jpeg 3577 https://riubu.ubu.es/bitstream/10259/8262/4/Carpio-ijnm_2019.pdf.jpg 466000ebcfb5b2ab360bfa3f9d4d7bb6 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/8262/3/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/8262/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Carpio-ijnm_2019.pdf Carpio-ijnm_2019.pdf application/pdf 501402 https://riubu.ubu.es/bitstream/10259/8262/1/Carpio-ijnm_2019.pdf d4187c86fa5f7c8e0410b7b7320f9e49 MD5 1 10259/8262 oai:riubu.ubu.es:10259/8262 2024-01-10 02:05:32.574 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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