Searched for: subject:"Survey"
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Goldberg, T. (author), Hennekam, R. (author), Wasch, L.J. (author), Reichart, G.J. (author), Rach, O. (author), Stammeier, J.A. (author), Griffioen, J. (author)
Multi-element analysis of discrete samples via X-Ray fluorescence or inductively coupled plasma spectrometry is commonly used to characterise the composition of solid geo-materials for environmental geochemical characterisation. Conventional geochemical analysis of individual samples is time consuming and costly, which often results in low...
article 2021
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Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A. (author)
A reduced order modeling algorithm for the estimation of space varying parameter patterns in numerical models is proposed. In this approach domain decomposition is applied to construct separate approximations to the numerical model in every subdomain. We introduce a new local parameterization that decouples the computational cost of the...
article 2021
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Fokker, P.A. (author), Borello, E.S. (author), Viberti, D. (author), Verga, F. (author), van Wees, J.D. (author)
Seasonal storage of heat in shallow aquifers for increasing the efficiency of geothermal energy systems requires a proper monitoring strategy. We expanded our earlier work on harmonic pulse testing (HPT) to incorporate the effect of a temperature front moving into the reservoir due to injection of hot (or cold) water. Our analytical solutions...
article 2021
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)
This study evaluates the potential of biomass ash as raw clinker material and the infuence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the best...
article 2021
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Duval, A. (author), Layrac, G. (author), van Zomeren, A. (author), Smit, A.T. (author), Pollet, E. (author), Averous, L. (author)
Two organosolv lignins extracted during pilot runs of the Fabiola process were analyzed, fractionated and chemically modified with ethylene carbonate (EC) to produce building blocks suitable for polymer synthesis. Isolation of low dispersity fractions relied on the partial solubility of the lignins in organic solvents. Lignins solubility was...
article 2021
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Cioc, R.C. (author), Lutz, M. (author), Pidko, E.A. (author), Crockatt, M. (author), van der Waal, J.C. (author), Bruijninckx, P.C.A. (author)
The Diels–Alder (DA) reaction of furans is a versatile tool in synthetic organic chemistry and in the production of sustainable building blocks and smart materials. Numerous experimental and theoretical investigations suggest that the diene scope is effectively limited to electron-rich furans, which excludes the most abundant and readily...
article 2021
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)
Purpose: This study evaluates the potential of biomass ash as raw clinker material and the influence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the...
article 2021
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Houben, A.J.P. (author), Goldberg, T. (author), Slomp, C.P. (author)
The Toarcian Oceanic Anoxic Event (T-OAE, ~183 Ma) represents a well-known episode of organic-rich deposition, which is accompanied by a substantial negative carbon-isotope excursion (CIE). Underpinning the relationships between the carbon-cycle perturbation, ocean anoxia, primary productivity feedbacks and the enrichment of sedimentary organic...
article 2021
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Sinke, W.C. (author), Folkerts, W. (author), Weeber, A.W. (author)
Zonne-energie (hier bedoeld: zonnestroom) is een onmisbare bouwsteen voor een duurzaam en klimaatneutraal energiesysteem; wereldwijd, in Europa en in Nederland. De kosten zijn spectaculair gedaald door een zeer succesvolle combinatie van onderzoek & innovatie en opschaling door marktontwikkeling. Dat is goed nieuws voor de noodzakelijke...
other 2021
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Meima, M.Y. (author), Blom, W.M. (author), Westerhout, J. (author), Kruizinga, A.G. (author), Remington, B.C. (author), Wheeler, M.W. (author), Houben, G.F. (author)
article 2021
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Romero, N. (author), van der Linden, K. (author), Morales España, G.A. (author), de Weerdt, M.M. (author)
The power system is undergoing a significant change as it adapts to the intermittency and uncertainty from renewable generation. Flexibility from loads such as electric vehicles (EVs) can serve as reserves to sustain the supply-demand balance in the grid. Some reserve markets have rules for participation that are computationally challenging for...
article 2021
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Carpentier, S.F.A. (author), Peuchen, J. (author), Paap, B. (author), Boullenger, B. (author), Meijninger, B. (author), Vandeweijer, V.P. (author), van Kesteren, W. (author), van Erp, F. (author)
For the development of an offshore wind farm, understanding the geological and geotechnical conditions in the upper 100 m below seafloor is crucial when reducing ground risk and designing (cost-effective) wind turbine foundations. We developed and tested a neural network approach to derive predictive (i.e. synthetic) values for CPT parameters–...
conference paper 2021
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Singh, A. (author), Fokker, P.A. (author)
This work is an extension of the time-resolved poro-elasto-plastic MohrCoulomb model by Fokker et al to include a more realistic constitutive model. Experiments on Slochteren sandstone revealed that the inelastic deformation contributes significantly in compressive deformation almost in all stages of loading and instigated the development of a...
article 2021
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Cordeiro, C.M. (author), van Hal, J.W. (author)
Using the example of how elite Nordic chefs use a relatively novel food such as seaweed in Nordic cuisine, we describe and develop a model of creative innovation in gastronomy services from a systems perspective. Seaweed has long had a connotation of poverty and austerity in the Nordic regions and had thus been a forgotten or marginalized food...
conference paper 2021
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Cordeiro, C.M. (author), van Hal, J.W. (author)
public lecture 2021
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Orlic, B. (author), Moghadam, A. (author), Brunner, L. (author), van Unen, M. (author), Wójcicki, A. (author), Bobek, K. (author), van der Valk, K. (author), Wollenweber, J. (author)
Well leakage risk is a key concern for the safety and economics of geological CO2 storage. Maintaining the integrity of annulus cement in the wellbore during the lifetime of well is of paramount importance. Cement properties and the stress state in cement at the downhole conditions are however uncertain and difficult, if at all possible, to...
conference paper 2021
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Thran, D. (author), Schering, K. (author), Schmieder, U. (author), Andersson, K. (author), Deane, P. (author), Dotzauer, M. (author), Hannula, I. (author), Henning, C. (author), Hoftberger, E. (author), Kiel, J. (author), Kranzl, L. (author), Kroon, P. (author), Lange, N. (author), Nielsen, M.P. (author), Norbeck, K. (author), Philbrook, A. (author), Rowe, I. (author), Schildhauer, T. (author), Schipfer, F. (author), Siikavirta, H. (author), Simila, L. (author), Talluri, G. (author)
This report compares eleven OECD members in their status and expectation on flexible bioenergy. This includes Australia, Austria, Denmark, Finland, Germany, Ireland, Italy, Netherlands, Sweden, Switzerland and the United States of America. The actual role of bioenergy in the different countries strongly varies between sectors and countries, from...
report 2021
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Deb, C. (author), Gelder, L.V. (author), Spiekman, M.E. (author), Pandraud, G. (author), Jack, R. (author), Fitton, R. (author)
article 2021
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Woolderink, H.A.G. (author), Cohen, K.M. (author), Kasse, C. (author), Kleinhans, M.G. (author), van Balen, R.T. (author)
The tectonic and fluvial setting of the Rhine-Meuse river system in the Lower Rhine Embayment rift system is exceptionally well known. The 19th century, pre-regulation river courses of three rivers are used to study a postulated sinuosity response to faulting. The fault-perpendicular Meuse River shows patterns of sinuosity changes at different...
article 2021
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Peng, F. (author), van Balen, R. (author), Beets, C. (author), Kasse, C. (author), Prins, M. (author), van der Putten, N. (author), Troelstra, S. (author), Woolderink, H. (author), van der Woude, J. (author)
Lateglacial climatic oscillations exerted profound impacts on the Meuse fluvial system. In the Lower Meuse (southern Netherlands), geomorphological studies in the last decades mainly centred on Lateglacial vegetation evolution, channel pattern changes and river terrace formation. Little information has been reported about the paleohydrology and...
article 2021
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