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Coenen, T.M.M. (author), Schoenmakers, A.C.M. (author), Verhagen, H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Barlican, a β-glucanase enzyme obtained from Trichoderma reesei, was produced by a fermentation process and subjected to a series of toxicological tests to document its safety for use as a feed additive. The enzyme product was examined for general oral toxicity, inhalation toxicity, irritation to eye and skin, skin sensitization and mutagenic...
article 1995
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TNO Preventie en Gezondheid (author), Reijneveld, S.A. (author), Mulder, Y.M. (author), Coenen, T. (author)
report 1998
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TNO Preventie en Gezondheid (author), Reijneveld, S.A. (author), Mulder, Y.M. (author), Coenen, T. (author)
report 1998
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TNO Milieu, Energie en Procesinnovatie (author), Hulskotte, J.H.J. (author), Coenen, P.W.H.G. (author), Draaijers, G.P.J. (author)
report 1999
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TNO Milieu, Energie en Procesinnovatie (author), Heslinga, D.C. (author), Coenen, P.W.H.G. (author), Jonker, W.J. (author)
report 1999
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Coenen, F. (author), TNO Arbeid (author)
Wie nog eens goed kijkt naar de in richting van de assemblagewerk plaats en het proces zelf kan vaak tot behoorlijke verbeteringen komen. De efficiency kan omhoog, de fysieke belasting van medewerkers omlaag. Om de assemblage echter helemaal gesmeerd te laten lopen, moet in het ontwerpproces al rekening worden gehouden met de toekomstige...
article 2000
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Energieonderzoek Centrum Nederland (author), Menkveld, M. (author), Burger, H. (author), Kaal, M.B.T. (author), Coenen, F.H.J.M. (author)
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report 2001
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van Tubergen, A. (author), Coenen, J. (author), Landewé, R. (author), Spoorenberg, A. (author), Chorus, A. (author), Boonen, A. (author), van der Linden, S. (author), van der Heijde, D. (author), TNO Preventie en Gezondheid (author)
Objectives. To investigate whether the single-item fatigue question of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and the Multidimensional Fatigue Inventory (MFI) are appropriate instruments to measure fatigue in ankylosing spondylitis (AS); to identify factors that influence fatigue in AS; and to assess how fatigue in all...
article 2002
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Winkel, R. (author), Smokers, R.T.M. (author), Kost, R. (author), Penney, T. (author), Morita, K. (author), Coenen, P. (author), Bauner, D. (author), Badin, F. (author), TNO Wegtransportmiddelen (author)
conference paper 2002
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Gies, T.J.A. (author), Bleeker, A. (author), Coenen, P.W.H.G. (author), Schoumans, O.F. (author), Noij, I.G.A.M. (author), TNO Milieu, Energie en Procesinnovatie (author)
report 2002
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TNO Milieu, Energie en Procesinnovatie (author), van Gijlswijk, R.N. (author), Coenen, P.W.H.G. (author), Pulles, M.P.J. (author), van der Sluijs, J. (author)
report 2004
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Coenen, T.J. (author), Mazzinghi, A. (author), Neto, A. (author), Tauritz, J.L. (author), Freni, A. (author), Gerini, G. (author), Bekers, D.J. (author), TNO Defensie en Veiligheid (author)
The design of RF feed networks to connect antenna elements to Transmit/Receive Modules is a critical aspect of integrated antenna design where the use of EBGs is very promising. There are two design issues of particular interest" firstly the losses at higher frequencies with state of the art planar guiding structures are very high; secondly...
conference paper 2006
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TNO Defensie en Veiligheid (author), Coenen, T.J. (author), Mazzinghi, A. (author), Bekers, D.J. (author), Tauritz, J.L. (author), Freni, A. (author), Gerini, G. (author)
Traditional planar transmission lines (e.g. microstrip lines) require thinner substrates at higher frequencies, resulting in narrow metal strips. Consequently the electric current is confined to a smaller volume and losses increase in these structures. Wave-guiding structures that are based on parallel plate waveguides with periodic side walls...
conference paper 2006
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TNO Defensie en Veiligheid (author), Coenen, T.J. (author), Bekers, D.J. (author), Mazzinghi, A. (author), Tauritz, J.L. (author)
conference paper 2006
document
TNO Defensie en Veiligheid (author), Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author)
Post-wall waveguides can fulfill the requirements for low-loss transmission lines and components in the interconnection between antenna and front-end electronics. In this paper we present a model based on an element-by-element method for simulating wave propagation in metallic and dielectric post-wall waveguides. We demonstrate that both types...
conference paper 2007
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TNO Defensie en Veiligheid (author), Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author)
In the last decade, post-wall waveguides have emerged as an interesting building block for (antenna) feed networks because of their potential low losses, low costs, ease of manufacturing and integrability with existing printed circuit board techniques. In this paper we present a general formulation to analyze the characteristics of post-wall...
conference paper 2008
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Coenen, T.J.M. (author), van den Berg, J.L. (author), Boucherie, R.J. (author)
This paper investigates a polling system with a random polling scheme, a 1-limited service discipline and deterministic service requirement modeling WLANs with QoS differentation capability. The system contains high and low priority queues that are distinguished via the probability of being served next. We propose a new iteration algorithm to...
conference paper 2008
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Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
Abstract—In this paper we discuss the design and measurement of a set of metallic post-wall waveguide components for antenna feed structures. The components are manufactured on a single layer printed circuit board and excited by a grounded coplanar waveguide. For a straight transmission line, a 90° H-plane bend, and a H-plane T-junction, we...
conference paper 2009
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Benneworth, P. (author), Coenen, L. (author), Moodysson, J. (author), Asheim, B. (author), TNO Bouw en Ondergrond (author)
Universities are increasingly seen as potential contributors to regional innovative capacity by serving as local knowledge conduits, bringing global state-of-the-art science and technology into the region. In practice, however, more active university engagement with their regional innovation systems is not as straightforward as it may seem. The...
article 2009
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Coenen, L. (author), Moodysson, J. (author), TNO Bouw en Ondergrond (author)
This paper presents a study of the pre-history and evolution of a regional innovation system initiative supporting activities at the intersection of traditional food production and modern biotechnology. Drawing on established ideas on the triple helix of industry, university and government and its impact on innovative capacity (as they are...
article 2009
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