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Ramani, Balan (author), Van Der Stel, Jan (author), Jagers, Gerard (author), Buijs, W. (author)
Coal is playing a major role as a reductant and as an energy source in the present world steel production due to its low cost and widespread distribution around the world. At the same time, being the largest contributor to global CO2 emissions, coal faces significant environmental challenges in terms of air pollution and global warming....
journal article 2023
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Jánoska, A. (author), Buijs, Joran (author), van Gulik, W.M. (author)
In large scale fermentors the cultivated cells are exposed to dynamic changes in the nutrient concentrations due to imperfect mixing. Based on the characterization of these nutrient gradients in space and time, a rational scale down design can be obtained. This study focuses on the combined gradients of dissolved sugar and oxygen...
journal article 2023
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Buijs, Teun (author)
The tactile internet can be described as the next step of the internet. It can empower people, adding physical interactions to what normally is just an audiovisual experience.<br/>It however does need ultra-low latency. <br/>A solution to having delays can be found in environment simulation.<br/>This paper describes a way to find the correct...
bachelor thesis 2022
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Buijs, Tim (author)
The Earth magnetic field is used in many applications such as navigation. Magnetic field sensors are mainly used on satellites for attitude control and in limited missions as scientific instruments. These magnetic field instruments are: specifically designed for the mission, expensive and/or require knowledge of the magnetic noise sources...
master thesis 2021
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Buijs, Matthijs (author)
High-water levels in the Rhine-Meuse delta are going to rise in the upcoming decades due to climate change with the accompanied sea level rise and the increase of the frequency of extreme Rhine discharges. The flood prone areas not protected by flood defenses at the Island of Dordrecht are directly influenced by the increase of these high-water...
master thesis 2021
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Else-Hassing, J. (author), Buijs, Joran (author), Blankerts, Nikki (author), Luttik, M.A.H. (author), de Hulster, A.F. (author), Pronk, J.T. (author), Daran, J.G. (author)
Engineered strains of the yeast Saccharomyces cerevisiae are intensively studied as production platforms for aromatic compounds such as hydroxycinnamic acids, stilbenoids and flavonoids. Heterologous pathways for production of these compounds use L-phenylalanine and/or L-tyrosine, generated by the yeast shikimate pathway, as aromatic...
journal article 2021
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Buijs, W. (author)
A molecular modeling study was carried out on linear polyethyleneimine (LPEI) to determine the CO2 capturing process taking into account structural changes of the material at various amounts of H2O. Until now, CO2 capture by LPEI was described as a combination of carbamic and carbonic acid formation. It was found that humidification below the...
journal article 2021
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Buijs, Laurens (author)
This thesis is focused on Wireless Acoustic Sensor Networks (WASNs) used for beamforming in a speech enhancement task. Since each node in a WASN has its own clock, clock offsets and clock skews between the nodes are inevitable. Clock offsets and clock skew can be detrimental to the beamformer performance. In this thesis we focus on the effect of...
master thesis 2020
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Buijs, Cas (author)
Machine learning is used for security purposes, to differ between the benign and the malicious. Where decision trees can lead to understandable and explainable classifications, an adversary could manipulate the model input to evade detection, e.g. the malicious been classified as the benign. State-of-the-art techniques improve the robustness by...
master thesis 2020
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Buijs, Floris (author)
The city of New York is densifying wherever it can, more pencil-like skyscrapers are being constructed every year, adding more housing and office space that is in high demand. Recently, industrial areas such as Hudson Yards have been transformed to gain more area to build on. Hell’s Kitchen forms one of the few exceptions for this trend of...
master thesis 2020
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van den Berg, R.D.D. (author), Buijs, Matthijs (author), Krijger, Tjerk (author), Rijnink, Alexandra (author), Vrijmoeth, Wessel (author)
The central Thermo Electrico Antonio Guiteras (CTE Antonio Guiteras) is a thermoelectric power plant located in the bay of Matanzas. In 2017, hurricane Irma passed the north coast of Cuba and destroyed the primary sea defense in front of the CTE, causing major damage to the plant. The power plant is renovated, and a new and improved sea defense...
student report 2020
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Buijs, W. (author)
Since 2012, the polymeric resin Lewatit R VP OC 1065 has been investigated for removal of CO2 from various process streams and air. The present article focuses on the deactivation mechanism of the resin with SO2 and a work around. This is important for CO2 capture from flue gas of coal-fired power plants and fuel oil. The deactivation of the...
journal article 2020
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Buijs, W. (author)
Lewatit R VP OC 1065 is a promising material for direct air capture of CO<sub>2</sub>. However, it was found that serious oxidative degradation already started from 80 °C. In this DFT study, oxidative degradation is described as a series of well-known reactions in air-oxidation chemistry. Oxidation of the resin starts with the formation of an...
journal article 2019
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Buijs, W. (author)
Since 2012, Lewatit R VP OC 1065 was reported as a promising material for direct air capture of CO<sub>2</sub>. However, deactivation at a high pressure of CO<sub>2</sub> at 120 °C was reported with detrimental effects on its application. In this study, using density functional theory calculations, a quantitative description of the...
journal article 2019
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Buijs, W. (author), Hussein, Ibnelwaleed A. (author), Mahmoud, Mohamed (author), Onawole, Abdulmujeeb T. (author), Saad, Mohammed A. (author), Berdiyorov, Golibjon R. (author)
A common problem that faces the oil and gas industry is the formation of iron sulfide scale in various stages of production. Recently an effective chemical formulation was proposed to remove all types of iron sulfide scales (including pyrite), consisting of a chelating agent diethylenetriaminepentaacetic acid (DTPA) at high pH using potassium...
journal article 2018
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Mahmoud, Mohamed (author), Hussein, Ibnelwaleed A. (author), Sultan, Abdullah (author), Saad, Mohammed A. (author), Buijs, W. (author), Vlugt, T.J.H. (author)
Iron sulphide scale, which exists in different forms, is common in sour oil and gas production wells. Iron sulphide hard scales are difficult to remove with acids, requiring mechanical intervention or the replacement of the production tubing. An environmentally friendly formulation with a high pH is proposed for the removal of both soft and...
journal article 2018
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Buijs, Roderick (author)
When working offshore on a floating vessel, the vessel will be subjected to wave induced motions and with a moving crane tip, a suspended load can start to swing. When the motions of the load become too large, the operation is interrupted. Alternatives such as jack-ups, function as a fixed platform to which the crane is attached, therefore...
master thesis 2017
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Buijs, L. (author), Hoogelander, M. (author)
In this work, a switched-device power amplier using bias control is designed and realized. The PA operates at a frequency of 100MHz. Test results show that the PA achieves a PAE of 63% at −6dB power back-off and 60% at the peak output power of 40dBm. First, an overview of the state-of-the-art PA technology and performance in high PAPR...
bachelor thesis 2017
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Buijs, Cas (author), Guijt, Arthur (author), Stegman, Lars (author)
West IT Solutions is expanding into a new focus area, ”Smart Planning”. They want to develop new modules for the Enterprise Resource Planning software they resell, Odoo. Odoo allows companies to manage their projects, employees and other resources. The goal of this project was to create a software product that assists users in creating plannings...
bachelor thesis 2017
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Jamali, S.H. (author), Ramdin, M. (author), Becker, T. (author), Torres-Knoop, Ariana (author), Dubbeldam, D. (author), Buijs, W. (author), Vlugt, T.J.H. (author)
Natural gas, synthesis gas, and flue gas typically contain a large number of impurities (e.g., acidic gases), which should be removed to avoid environmental and technological problems, and to meet customer specifications. One approach is to use physical solvents to remove the acidic gases. If no experimental data are available, the solubility...
journal article 2017
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