Searched for: subject%3A%22Growth%255C+rate%22
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document
Straathof, Adrie J.J. (author)
Microbial conversions are generally inhibited by their products. This product inhibition is particularly dependent on the product's hydrophobicity and on its acid dissociation behaviour, hence on pH. Dependence on the microbial strain is relatively modest according to many published data. Since product inhibition has various mechanistic...
review 2023
document
Leonetti, Davide (author), Mattos Ferreira, V. (author), Schotsman, B. (author)
R350HT is a standard premium heat-treated rail steel and the reference for new rail steel development. The present study discusses an experimental characterization of fatigue crack growth rate and fracture toughness for this refined pearlitic rail steel in mode-I-loading. The tests are carried out on compact tension specimens extracted from...
journal article 2023
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Perdigão Elisiário, M. (author), Van Hecke, Wouter (author), De Wever, Heleen (author), Noorman, H.J. (author), Straathof, Adrie J.J. (author)
Abstract: Syngas fermentation is a leading microbial process for the conversion of carbon monoxide, carbon dioxide, and hydrogen to valuable biochemicals. Clostridium autoethanogenum stands as a model organism for this process, showcasing its ability to convert syngas into ethanol industrially with simultaneous fixation of carbon and...
journal article 2023
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Mohammadi, R. (author), Akrami, R. (author), Assaad, Maher (author), Nasor, Mohamed (author), Imran, Ahmed (author), Fotouhi, M. (author)
In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were...
journal article 2023
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de Jong, Bart (author)
Switching max-plus linear (SMPL) systems written in max-plus algebra form a robust framework to model discrete-event systems governed by synchronisation whose behaviour may switch over time. Their evolution is described by a max-plus linear state-space representation that may change by switching modes. In their typical form, switching may depend...
master thesis 2022
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Korkontzelos, Harry (author)
The increasing demands for chemicals and fuels combined with the fuel versus food competition over first generation feedstocks requires the development of more sustainable alternatives. Syngas fermentation offers a sustainable production of fuels and recycling of gaseous and solid waste utilizing gas<br/>fermenting bacteria. Acetogens, such as...
master thesis 2022
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Büke, F. (author), Grilli, Jacopo (author), Cosentino Lagomarsino, Marco (author), Bokinsky, G.E. (author), Tans, S.J. (author)
Growth and division are central to cell size. Bacteria achieve size homeostasis by dividing when growth has added a constant size since birth, termed the adder principle, by unknown mechanisms.<sup>1</sup><sup>,</sup><sup>2</sup> Growth is well known to be regulated by guanosine tetraphosphate (ppGpp), which controls diverse processes from...
journal article 2022
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Imholz, N.C.E. (author)
This thesis is about a little molecule called guanosine tetraphosphate. ppGpp. Consider it the bacterial brain, at the core of the coordination and regulation of bacterial growth. For over half a century, it has haunted microbiologists as it appears involved in every aspect of microbial physiology, yet incredibly difficult to study due to its...
doctoral thesis 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Z. (author), Tang, Weiguo (author)
Surface cracked steel plates reinforced with single-side Fiber-Reinforced Polymer (FRP) subjected to cyclic tension are experimental studied. The main purpose is to analyze the effect of FRP reinforcement on the crack growth. The failure modes and their effects are analyzed as well. Given the single-side reinforcement, reinforcing the cracked...
journal article 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Zhiping (author)
In this paper, we experimentally studied the external surface crack growth in steel pipes reinforced with Composite System Repaired (CRS). CRS reinforced surface cracked API 5L X65 pipes were tested, containing three initial notch sizes and four reinforcement schemes. During the tests, the crack growth results, as well as the strain on the...
journal article 2020
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Xin, H. (author), Veljkovic, M. (author)
In this paper, the parameters of fatigue crack growth rate for Q355J2 steel exposed to air and seawater were presented using the “Paris' law” based on the stress intensity factor (SIF), J-integral, crack tip opening displacement (CTOD) and crack tip opening angle (CTOA). The residual stress of a compact tension specimen is analysed by...
journal article 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Zhiping (author)
In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the...
journal article 2020
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Imholz, N.C.E. (author), Noga, M.J. (author), van den Broek, N.J.F. (author), Bokinsky, Gregory (author)
The molecule guanosine tetraphophosphate (ppGpp) is most commonly considered an alarmone produced during acute stress. However, ppGpp is also present at low concentrations during steady-state growth. Whether ppGpp controls the same cellular targets at both low and high concentrations remains an open question and is vital for understanding...
journal article 2020
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Zhou, H. (author), Infante Ferreira, C.A. (author)
CO2 hydrate slurry is a favourable direct coolant of fresh products due to its large latent heat and phase change temperature around 7 °C. Continuous production of this slurry is, however, difficult to realise due to the high rate of hydrate formation. The use of additives is proposed with the purpose of decreasing the formation rate so that the...
journal article 2017
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Usman, M. (author)
In this research effect of temperature on the disbond growth rate due to fatigue load in adhesive bonds is investigated. Concept of release of strain energy has been used. In particular the effect of temperature on the relationship between disbond growth rate and strain energy released per load cycle has been investigated. The general trend...
master thesis 2016
document
Gupta, A.G. (author)
In offshore industry, subsea pipelines are used for transporting oil and gas from wells to remote platforms and from platforms to nearby shores. A microscopic flaw in pipeline during installation and operation will grow normal to the principal stress if the threshold value of fatigue stress range is exceeded. In case, these microscopic flaws...
master thesis 2014
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Boender, L.G.M. (author), Van Maris, A.J.A. (author), De Hulster, E.A.F. (author), Almering, M.J.H. (author), Van der Klei, I.J. (author), Veenhuis, M. (author), De Winde, J.H. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)
Extremely low specific growth rates (below 0.01 h?1) represent a largely unexplored area of microbial physiology. In this study, anaerobic, glucose-limited retentostats were used to analyse physiological and genome-wide transcriptional responses of Saccharomyces cerevisiae to cultivation at near-zero specific growth rates. While quiescence is...
journal article 2011
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Boender-van Dijk, L.G.M. (author)
doctoral thesis 2011
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Menon, A.R. (author)
A synthesis-based approach to the design of crystallizers and industrial crystallization processes is introduced in this thesis. An ontology for a task-based design procedure has been developed which breaks the crystallization process into a subset of basic functions (physical tasks) which transform the physical state of matter to a final...
doctoral thesis 2006
document
Bovy, P.H.L. (author), Gunn, H. (author)
conference paper 1989
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