Search

Your search keyword '"Van dEN Bosch, Sander"' showing total 28 results
Start Over Author "Van dEN Bosch, Sander"
28 results on '"Van dEN Bosch, Sander"'

1. A Quantitative Assessment Method for Microservices Granularity to Improve Maintainability

Author

Driessen, Famke, Ferreira Pires, Luís, Moreira, João Luiz Rebelo, Verhoeven, Paul, van den Bosch, Sander, van der Aalst, Wil, Series Editor, Ram, Sudha, Series Editor, Rosemann, Michael, Series Editor, Szyperski, Clemens, Series Editor, Guizzardi, Giancarlo, Series Editor, Sales, Tiago Prince, editor, de Kinderen, Sybren, editor, Proper, Henderik A., editor, Pufahl, Luise, editor, Karastoyanova, Dimka, editor, and van Sinderen, Marten, editor

Published
2024
Full Text
View/download PDF

14. Experimental study of precessing instabilities in the cold flow field of a sudden expansion dump combustor

Author

Holemans, Thomas, Yang, zhu, Van den Bosch, sander, De Greef, johan, and Vanierschot, maarten

Subjects
Sudden Expansion Flows, Stereoscopic Particle Image Velocimetry, Spectral Proper Orthogonal Decomposition, Precessing Instabilities
Abstract

Stereoscopic Particle Image Velocimetry (SPIV) measurements are performed to analyse the cold flow field in a sudden expansion dump combustor geometry, with an expansion ratio of 4.9. The Reynolds number is varied from 5200 till 63300. The time-averaged flow field is found to be axisymmetric and has a jet-like velocity profile near the nozzle with a spreading rate comparable to free round jets. Despite the axisymmetric nature of the mean flow field, it contains unsteady coherent structures, which are analysed using the Spectral Proper Orthogonal Decomposition (SPOD) method. It is found that the instantaneous flow field is asymmetric and it precesses around the central axis of the geometry. The structure of this precession is similar for all Reynolds numbers investigated and the Strouhal number increases with increasing Reynolds number till a value of 26000, after which it reaches a constant value of around 3×10⁻³. These precessing structures were previously only reported for swirling sudden expansion flows, where they are extensively studied, but this study shows they also exist in the non-swirling flow case. ispartof: pages:2752-2765 ispartof: Proceedings of 20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics 2022 pages:2752-2765 ispartof: 20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics 2022 location:Lisbon date:11 Jul - 14 Jul 2022 status: published

Published
2022

16. Preparation of Renewable Thiol‐yne “Click” Networks Based on Fractionated Lignin for Anticorrosive Protective Films Applications

Author

Jedrzejczyk, Monika A., primary, Madelat, Negin, additional, Wouters, Benny, additional, Smeets, Hans, additional, Wolters, Maartje, additional, Stepanova, Svetlana A., additional, Vangeel, Thijs, additional, Van Aelst, Korneel, additional, Van den Bosch, Sander, additional, Van Aelst, Joost, additional, Polizzi, Viviana, additional, Servaes, Kelly, additional, Vanbroekhoven, Karolien, additional, Lagrain, Bert, additional, Sels, Bert F., additional, Terryn, Herman, additional, and Bernaerts, Katrien V., additional

Published
2022
Full Text
View/download PDF

18. Lignin-Based Additives for Improved Thermo-Oxidative Stability of Biolubricants

Author

Jedrzejczyk, Monika A., primary, Van den Bosch, Sander, additional, Van Aelst, Joost, additional, Van Aelst, Korneel, additional, Kouris, Panos D., additional, Moalin, Mohamed, additional, Haenen, Guido R. M. M., additional, Boot, Michael D., additional, Hensen, Emiel J. M., additional, Lagrain, Bert, additional, Sels, Bert F., additional, and Bernaerts, Katrien V., additional

Published
2021
Full Text
View/download PDF

19. Lignin-Based Additives for Improved Thermo-Oxidative Stability of Biolubricants

Author

Jedrzejczyk, Monika A., Van den Bosch, Sander, van Aelst, Joost, van Aelst, Korneel, Kouris, Panos D., Moalin, Mohamed, Haenen, Guido R.M.M., Boot, Michael D., Hensen, Emiel J.M., Lagrain, Bert, Sels, Bert F., Bernaerts, Katrien V., Jedrzejczyk, Monika A., Van den Bosch, Sander, van Aelst, Joost, van Aelst, Korneel, Kouris, Panos D., Moalin, Mohamed, Haenen, Guido R.M.M., Boot, Michael D., Hensen, Emiel J.M., Lagrain, Bert, Sels, Bert F., and Bernaerts, Katrien V.

Abstract

There is an environmental concern regarding the use of petroleum-based lubricants, which are generally toxic and nonbiodegradable. Biobased lubricants, such as vegetable oils, are the alternative: they show excellent lubricity, are readily biodegradable and nontoxic. However, a major disadvantage of using vegetable oils in lubricant applications is their lack of thermo-oxidative stability, which can be improved by antioxidant additives. Here, we propose the use of lignin-based additives in biolubricant formulations to improve this feature, based on lignin’s known antioxidant properties. To ensure a stable dispersion in vegetable oil, lignin was partially esterified. Antioxidant properties of lignin before and after palmitoylation were demonstrated in a 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. Four different lignin-based fractions, commercial Protobind P1000 soda lignin from straw, solvolytically fractionated Protobind P1000 lignin and two lignin fractions from reductively catalyzed fractionation (RCF) of native birch wood, were tested in biolubricant formulations with castor oil as base oil. Those lignin fractions exhibited excellent performance compared to butylated hydroxytoluene (BHT), a commonly used petroleum-based antioxidant. Formulations of modified lignin in castor oil possess improved thermo-oxidative stability, as illustrated by their increased oxidation induction time. Additionally, rheological and tribological tests demonstrate similar, or in some cases improved, lubricating properties compared to castor oil. This study showcases the successful incorporation of lignin-based antioxidants in biolubricant formulations, tackling the major disadvantage of vegetable oils as environment-friendly lubricants.

Published
2021

22. A sustainable wood biorefinery for low–carbon footprint chemicals production

Author

Liao, Yuhe, primary, Koelewijn, Steven-Friso, additional, Van den Bossche, Gil, additional, Van Aelst, Joost, additional, Van den Bosch, Sander, additional, Renders, Tom, additional, Navare, Kranti, additional, Nicolaï, Thomas, additional, Van Aelst, Korneel, additional, Maesen, Maarten, additional, Matsushima, Hironori, additional, Thevelein, Johan M., additional, Van Acker, Karel, additional, Lagrain, Bert, additional, Verboekend, Danny, additional, and Sels, Bert F., additional

Published
2020
Full Text
View/download PDF

28. Introducing curcumin biosynthesis in Arabidopsisenhances lignocellulosic biomass processing

Author

Oyarce, Paula, De Meester, Barbara, Fonseca, Fernando, de Vries, Lisanne, Goeminne, Geert, Pallidis, Andreas, De Rycke, Riet, Tsuji, Yukiko, Li, Yanding, Van den Bosch, Sander, Sels, Bert, Ralph, John, Vanholme, Ruben, and Boerjan, Wout

Abstract

Lignin is the main cause of lignocellulosic biomass recalcitrance to industrial enzymatic hydrolysis. By partially replacing the traditional lignin monomers by alternative ones, lignin extractability can be enhanced. To design a lignin that is easier to degrade under alkaline conditions, curcumin (diferuloylmethane) was produced in the model plant Arabidopsis thalianavia simultaneous expression of the turmeric (Curcuma longa) genes DIKETIDE-CoA SYNTHASE(DCS) and CURCUMIN SYNTHASE 2(CURS2). The transgenic plants produced a plethora of curcumin- and phenylpentanoid-derived compounds with no negative impact on growth. Catalytic hydrogenolysis gave evidence that both curcumin and phenylpentanoids were incorporated into the lignifying cell wall, thereby significantly increasing saccharification efficiency after alkaline pretreatment of the transgenic lines by 14–24% as compared with the wild type. These results demonstrate that non-native monomers can be synthesized and incorporated into the lignin polymer in plants to enhance their biomass processing efficiency.

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results