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Efficient water reduction with gallium phosphide nanowires

Standing, A. (author), Assali, S. (author), Gao, L. (author), Verheijen, M.A. (author), Van Dam, D. (author), Cui, Y. (author), Notten, P.H.L. (author), Haverkort, J.E.M. (author), Bakkers, E.P.A.M. (author)

Photoelectrochemical hydrogen production from solar energy and water offers a clean and sustainable fuel option for the future. Planar III/V material systems have shown the highest efficiencies, but are expensive. By moving to the nanowire regime the demand on material quantity is reduced, and new materials can be uncovered, such as wurtzite...

journal article 2015

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Simulation based decision support for strategic communication and marketing management concerning the consumer introduction of smart energy meters

Van der Sanden, M.C.A. (author), Van Dam, K.H. (author), Stragier, J. (author), Kobus, C.B.A. (author)

Communication and marketing professionals make strategic decisions in highly complex and dynamic contexts. These decisions are highly uncertain on the outcome and process level when, for example, consumer behaviour is at stake. Decision support systems can provide insights in these levels of uncertainty and the professional process of decision...

journal article 2013

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Quantitative metabolomics analysis of amino acid metabolism in recombinant Pichia pastoris under different oxygen availability conditions

Carnicer, M. (author), Ten Pierick, A. (author), Van Dam, J. (author), Heijnen, J.J. (author), Albiol, J. (author), Van Gulik, W. (author), Ferrer, P. (author)

Background: Environmental and intrinsic stress factors can result in the global alteration of yeast physiology, as evidenced by several transcriptional studies. Hypoxia has been shown to have a beneficial effect on the expression of recombinant proteins in Pichia pastoris growing on glucose. Furthermore, transcriptional profiling analyses...

journal article 2012

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Galacturonic Acid Inhibits the Growth of Saccharomyces cerevisiae on Galactose, Xylose, and Arabinose

Huisjes, E.H. (author), De Hulster, E. (author), Van Dam, J.C. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)

The efficient fermentation of mixed substrates is essential for the microbial conversion of second-generation feedstocks, including pectin-rich waste streams such as citrus peel and sugar beet pulp. Galacturonic acid is a major constituent of hydrolysates of these pectin-rich materials. The yeast Saccharomyces cerevisiae, the main producer of...

journal article 2012

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Design of an Airborne Three-Dimensional Separation Assistance Display

Ellerbroek, J. (author), Visser, M. (author), Van Dam, S.B.J. (author), Van Paassen, M.M. (author), Mulder, M. (author)

In the context of the Next Generation Air Transportation System and Single European Sky ATM Research future airspace programs, this paper describes a concept for an airborne separation assurance display that is designed to aid pilots in their task of self-separation, by visualizing the possibilities for conflict resolution that the airspace...

journal article 2011

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Efficient scheme for the shallow water equations on unstructured grids with application to the Continental Shelf

Kernkamp, H.W.J. (author), Van Dam, A. (author), Stelling, G.S. (author), De Goede, E.D. (author)

In this paper, a shallow-water flow solver is presented, based on the finite-volume method on unstructured grids The method is suitable for flows that occur in rivers, channels, sewer systems (1D), shallow seas, rivers, overland flow (2D), and estuaries, lakes and shelf breaks (3D). We present an outline of the numerical approach and show three...

journal article 2011

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Seasonal evaluation of the land surface scheme HTESSEL against remote sensing derived energy fluxes of the Transdanubian region in Hungary

Wipfler, E.L. (author), Metselaar, K. (author), Van Dam, J.C. (author), Feddes, R.A. (author), Van Meijgaard, E. (author), Van Ulft, L.H. (author), Van den Hurk, B. (author), Zwart, S.J. (author), Bastiaanssen, G.M. (author)

journal article 2011

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Development of quantitative metabolomics for Pichia pastoris

Carnicer,, M. (author), Canelas, A.B. (author), Ten Pierick, A. (author), Zeng, Z. (author), Van Dam, J. (author), Albiol, J. (author), Ferrer, P. (author), Heijnen, J.J. (author), Van Gulik, W. (author)

Accurate, reliable and reproducible measurement of intracellular metabolite levels has become important for metabolic studies of microbial cell factories. A first critical step for metabolomic studies is the establishment of an adequate quenching and washing protocol, which ensures effective arrest of all metabolic activity and removal of...

journal article 2011

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J2: An evaluation of new estimates from GPS, GRACE, and load models compared to SLR

Lavallée, D.A. (author), Moore, P. (author), Clarke, P.J. (author), Petrie, E.J. (author), Van Dam, T. (author), King, M.A. (author)

Changes in J2, resulting from past and present changes in Earth's climate, are traditionally observed by Satellite Laser ranging (SLR). Assuming an elastic Earth, it is possible to infer changes in J2 from changes in Earth's shape observed by GPS. We compare estimates of non-secular J2 changes from GPS, SLR, GRACE, and a load model. The GPS and...

journal article 2010

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Home energy monitors: Impact over the medium-term

Van Dam, S.S. (author), Bakker, C.A. (author), Van Hal, J.D.M. (author)

Home Energy Management Systems (HEMS), e.g. energy monitors, are intermediary products that can visualize, manage, and/or monitor the energy use of other products or whole households. HEMS increasingly receive attention for their role in energy conservation in households. A literature review and a case study examine the mid-term effectiveness ...

journal article 2010

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A Comprehensive Model of the Response of Silicon Photomultipliers

Van Dam, H.T. (author), Seifert, S. (author), Vinke, R. (author), Dendooven, P. (author), Löhner, H. (author), Beekman, F.J. (author), Schaart, D.R. (author)

The response of a silicon photomultiplier (SiPM) to optical signals is inherently nonproportional due to saturation, afterpulsing, and crosstalk. Existing models of the SiPM response do not account for all of these effects, and therefore, these models are not sufficiently accurate for many applications. In this work, a comprehensive model of the...

journal article 2010

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LaBr3:Ce and SiPMs for time-of-flight PET: Achieving 100 ps coincidence resolving time

Schaart, D.R. (author), Seifert, S. (author), Vinke, R. (author), Van Dam, H.T. (author), Dendooven, P. (author), Löhner, H. (author), Beekman, F.J. (author)

The use of time-of-flight (TOF) information in positron emission tomography (PET) enables significant improvement in image noise properties and, therefore, lesion detection. Silicon photomultipliers (SiPMs) are solid-state photosensors that have several advantages over photomultiplier tubes (PMTs). SiPMs are small, essentially transparent to 511...

journal article 2010

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Simulation of silicon photomultiplier signals

Seifert, S. (author), Van Dam, H.T. (author), Huizenga, J. (author), Vinke, R. (author), Dendooven, P. (author), Löhner, H. (author), Schaart, D.R. (author)

In a silicon photomultiplier (SiPM), also referred to as multi-pixel photon counter (MPPC), many Geiger-mode avalanche photodiodes (GM-APDs) are connected in parallel so as to combine the photon counting capabilities of each of these so-called microcells into a proportional light sensor. The discharge of a single microcell is relatively well...

journal article 2009

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Critical evaluation of paradigms for modelling integrated supply chains

Van Dam, K.H. (author), Adhitya, A. (author), Srinivasan, R. (author), Lukszo, Z. (author)

Contemporary problems in process systems engineering often require model-based decision support tool. Among the various modelling paradigms, equation-based models and agent-based models are widely used to develop dynamic models of systems. Which is the most appropriate modelling paradigm for a supply chain? In this paper, we seek to address this...

journal article 2009

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A novel, SiPM-array-based, monolithic scintillator detector for PET

Schaart, D.R. (author), Van Dam, H.T. (author), Seifert, S. (author), Vinke, R. (author), Dendooven, P. (author), Löhner, H. (author), Beekman, F.J. (author)

Silicon photomultipliers (SiPMs) are of great interest to positron emission tomography (PET), as they enable new detector geometries, for e.g., depth-of-interaction (DOI) determination, are MR compatible, and offer faster response and higher gain than other solid-state photosensors such as avalanche photodiodes. Here we present a novel detector...

journal article 2009

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Ecological Interface Design of a Tactical Airborne Separation Assistance Tool

Van Dam, S. (author), Mulder, M. (author), Van Paassen, M.M. (author)

In a free-flight airspace environment, pilots have more freedom to choose user-preferred trajectories. An onboard pilot support system is needed that exploits travel freedom while maintaining spatial separation with other traffic. Ecological interface design is used to design an interface tool that assists pilots with the tactical planning of...

journal article 2008

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Leakage-free rapid quenching technique for yeast metabolomics

Canelas, A.B. (author), Ras, C. (author), Ten Pierick, A. (author), Van Dam, J.C. (author), Heijnen, J.J. (author), Van Gulik, W.M. (author)

Accurate determination of intracellular metabolite levels requires reliable, reproducible techniques for sampling and sample treatment. Quenching in 60% (v/v) methanol at ?40°C is currently the standard method for sub-second arrest of metabolic activity in microbial metabolomics but there have been contradictory reports in the literature on...

journal article 2008

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Signal to Noise Ratio of APD-Based Monolithic Scintillator Detectors for High Resolution PET

Maas, M. (author), Schaart, D.R. (author), Van der Laan, D.J. (author), Van Dam, T. (author), Huizenga, J. (author), Brouwer, J.C. (author), Bruyndonckx, P. (author), Lemaitre, C. (author), Van Eijk, C.W.E. (author)

journal article 2008

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Agent-Based Control of Distributed Electricity Generation with Micro Combined Heat and Power: Cross-Sectoral Learning for Process and Infrastructure Engineers

Van Dam, K.H. (author), Houwing, M. (author), Lukszo, Z. (author), Bouwmans, I. (author)

For the distributed control of an electricity infrastructure incorporating clusters of residential combined heat and power units (micro-CHP or ?CHP) a Multi-Agent System approach is considered. The network formed by households generating electricity with ?CHP units and the facilitating energy supplier can be regarded as an electricity production...

journal article 2007

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Application of adjoint Monte Carlo to accelerate simulations of mono-directional beams in treatment planning for Boron Neutron Capture Therapy

Nievaart, V.A. (author), Legrady, D. (author), Moss, R.L. (author), Kloosterman, J.L. (author), Van der Hagen, T.H. (author), Van Dam, H. (author)

This paper deals with the application of the adjoint transport theory in order to optimize Monte Carlo based radiotherapy treatment planning. The technique is applied to Boron Neutron Capture Therapy where most often mixed beams of neutrons and gammas are involved. In normal forward Monte Carlo simulations the particles start at a source and...

journal article 2007