Searched for: subject:"enrichment"
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Mesbah, S. (author)
Named Entity Recognition (NER) is an essential information retrieval task. It enables a wide range of natural language processing applications such as semantic search, machine translation, etc. The NER can be formulated as the task of identifying and typing words or phrases in a text that refers to certain classes of interest (e.g., disease,...
doctoral thesis 2020
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Valk, L.C. (author), Luttik, M.A.H. (author), de Ram, C. (author), Pabst, M. (author), van den Broek, M.A. (author), van Loosdrecht, Mark C.M. (author), Pronk, J.T. (author)
D-galacturonate, a key constituent of pectin, is a ubiquitous monomer in plant biomass. Anaerobic, fermentative conversion of D-galacturonate is therefore relevant in natural environments as well as in microbial processes for microbial conversion of pectin-containing agricultural residues. In currently known microorganisms that anaerobically...
journal article 2020
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Rombouts, J.L. (author), Kranendonk, Elsemiek Madeleine Maria (author), Regueira, Alberte (author), Weissbrodt, D.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Lactic acid-producing bacteria are important in many fermentations, such as the production of biobased plastics. Insight in the competitive advantage of lactic acid bacteria over other fermentative bacteria in a mixed culture enables ecology-based process design and can aid the development of sustainable and energy-efficient bioprocesses....
journal article 2020
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Kadeethum, T. (author), Nick, H.M. (author), Lee, S. (author), Ballarin, F. (author)
This paper presents the enriched Galerkin discretization for modeling fluid flow in fractured porous media using the mixed-dimensional approach. The proposed method has been tested against published benchmarks. Since fracture and porous media discontinuities can significantly influence single- and multi-phase fluid flow, the heterogeneous and...
journal article 2020
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Aragon, A.M. (author), Liang, Bowen (author), Ahmadian, Hossein (author), Soghrati, Soheil (author)
The Hierarchical Interface-enriched Finite Element Method (HIFEM) is a technique for solving problems containing discontinuities in the field gradient using finite element meshes that do not conform (match) the domain morphology. The method is suitable for analyzing problems with complex geometries or when such geometry is not known a priori....
journal article 2020
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Valk, L.C. (author), Diender, Martijn (author), Stouten, G.R. (author), Petersen, Jette F. (author), Nielsen, Per H. (author), Dueholm, Morten S. (author), Pronk, J.T. (author), van Loosdrecht, Mark C.M. (author)
Acetogens have the ability to fixate carbon during fermentation by employing the Wood-Ljungdahl pathway (WLP), which is highly conserved across Bacteria and Archaea. In a previous study, product stoichometries in galacturonate-limited, anaerobic enrichment cultures of “Candidatus Galacturonibacter soehngenii,” from a novel genus within the...
journal article 2020
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van den Boom, S.J. (author), Zhang, J. (author), van Keulen, A. (author), Aragon, A.M. (author)
Generating matching meshes for finite element analysis is not always a convenient choice, for instance, in cases where the location of the boundary is not known a priori or when the boundary has a complex shape. In such cases, enriched finite element methods can be used to describe the geometric features independently from the mesh. The...
journal article 2019
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De Paepe, Kim (author), Verspreet, Joran (author), Rezaei, Mohammad Naser (author), Martinez, Silvia Hidalgo (author), Meysman, F.J.R. (author), Van De Walle, Davy (author), Dewettinck, Koen (author), Raes, Jeroen (author), Courtin, Christophe (author), Van De Wiele, Tom (author)
Undigestible, insoluble food particles, such as wheat bran, are important dietary constituents that serve as a fermentation substrate for the human gut microbiota. The first step in wheat bran fermentation involves the poorly studied solubilization of fibers from the complex insoluble wheat bran structure. Attachment of bacteria has been...
journal article 2019
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Zhang, J. (author), van den Boom, S.J. (author), van Keulen, A. (author), Aragon, A.M. (author)
A new enriched finite element technique, named the Discontinuity-Enriched Finite Element Method (DE-FEM), was introduced recently for solving problems with both weak and strong discontinuities in 2-D. In this mesh-independent procedure, enriched degrees of freedom are added to new nodes collocated at the intersections between discontinuities...
journal article 2019
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Conthe Calvo, M. (author), Parchen, C.M. (author), Stouten, G.R. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Despite its ecological importance, essential aspects of microbial N<sub>2</sub>O reduction—such as the effect of O<sub>2</sub> availability on the N<sub>2</sub>O sink capacity of a community—remain unclear. We studied N<sub>2</sub>O vs. aerobic respiration in a chemostat culture to explore (i) the extent to which simultaneous respiration of N...
journal article 2018
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Liem, C.C.S. (author)
Over the past millennia, music has actively been performed and listened to by mankind, thus also playing an important role in establishing sociocultural identities that have evolved over time. In parallel, for many centuries, newspapers played an important role in informing society on a regular and frequent basis on topics noteworthy at that...
conference paper 2018
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Marang, L. (author)
Polyhydroxyalkanoates (PHAs) are microbial storage polymers accumulated by many different prokaryotes as an intracellular carbon and energy reserve. The polymer properties make PHA interesting as bioplastic. Moreover, the monomers could serve as chiral building blocks or be used as a biofuel.<br/>Currently, PHA is commercially produced using...
doctoral thesis 2017
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van den Berg, E.M. (author)
The anthropogenic nitrogen inputs in the environment exceed the input by natural processes and impact the global nitrogen cycle considerably . Human meddling in the N-cycle occurs mainly in agricultural ecosystems. Loss of nitrogen from the agricultural soils, other than crop harvest, can have polluting effects on other environments. The three...
doctoral thesis 2017
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Liu, Y. (author)
A better understanding of the wear mechanism of materials is essential to selecting suitable materials to prolong service time and reduce costs. Wear resistance is not an intrinsic material property but a response to a system including multiples parameters determined by the material, the counter body, the load condition, and the environment....
doctoral thesis 2017
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van den Berg, E.M. (author), Rombouts, J.L. (author), Kuenen, J.G. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
Denitrification and dissimilatory nitrate reduction to ammonium (DNRA) are two microbial processes that compete for oxidized nitrogen compounds in the environment. The objective of this work was to determine the role of nitrite versus nitrate as terminal electron acceptor on the competition between DNRA and denitrification. Initially, a mixed...
journal article 2017
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Yagob Mohamed, T.I. (author)
Iron is an essential trace element involved in many processes in the human body. Some disorders like iron deficiency anaemia and haemochromatosis directly result from changes in iron status, while on the other hand iron metabolism changes during illness. Since these adjustments in the iron handling of the body may have consequences for the...
doctoral thesis 2016
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Marang, L. (author), van Loosdrecht, Mark C.M. (author), Kleerebezem, R. (author)
The process for non-axenic polyhydroxyalkanoate (PHA) production from organic waste generally comprises three steps: acidogenic fermentation of the waste stream, enrichment of a PHA-producing culture, and production of the PHA. This study assesses the feasibility of combining the enrichment and production step. Harvesting PHA-rich biomass...
journal article 2016
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Tamis, J. (author), Sorokin, D.Y. (author), Jiang, Y. (author), Van Loosdrecht, M.C.M. (author), Kleerebezem, R. (author)
Background Many waste streams have a relatively high vegetable oil content, which is a potential resource that should be recovered. Microbial storage compound production for the recovery of lipids from lipid-water emulsions with open (unsterilized) microbial cultures was investigated in a sequencing batch reactor using a diluted vegetable oil...
journal article 2015
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Hanke, A. (author), Hamann, E. (author), Dharma, R. (author), Geelhoed, J.S. (author), Hargesheimer, T. (author), Kraft, B. (author), Meyer, V. (author), Lenk, S. (author), Osmers, H. (author), Wu, R. (author), Makinwa, K.A.A. (author), Hettich, R.L. (author), Banfield, J.F. (author), Tegetmeyer, H.E. (author), Strous, M. (author)
Sandy coastal sediments are global hotspots for microbial mineralization of organic matter and denitrification. These sediments are characterized by advective porewater flow, tidal cycling and an active and complex microbial community. Metagenomic sequencing of microbial communities sampled from such sediments showed that potential sulfur...
journal article 2014
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Moralejo Gárate, H. (author)
Polyhydroxyalkanotes (PHAs) are naturally occurring polymers synthesized by a wide range of microorganisms. Their physiological role is to act as carbon and energy reserves, and their mechanical and physical properties are similar to those of petrochemical plastics. PHAs can be synthesized from renewable materials and they are biodegradable....
doctoral thesis 2014
Searched for: subject:"enrichment"
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