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Steeneken, P.A.M. (author), Woortman, A.J.J. (author), TNO Kwaliteit van Leven (author)
The occurrence of surface effects in the acetylation of granular potato starch with acetic anhydride to degrees of substitution 0.04-0.2 was studied by two different approaches. The first approach involved the fractionation of granular starch acetates into five different size classes and analysis of their acetate content. Alternatively, two...
article 2008
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Steeneken, P. (author), Woortman, A. (author), Jurgens, A. (author), Vernooij, W. (author), Binnema, D. (author), Oudhuis, L. (author), TNO Kwaliteit van Leven (author)
article 2005
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van der Maarel, M.J.E.C. (author), Capron, I. (author), Euverink, G.-J.W. (author), Bos, H.Th. (author), Kaper, T. (author), Binnema, D.J. (author), Steeneken, P.A.M. (author), TNO Kwaliteit van Leven (author)
Amylomaltases or D-enzyme (4-α-glucanotransferases; E.C. 2.4.1.25) are carbohydrate-active enzymes that catalyze the transfer of glucan units from one α-glucan to another in a disproportionation reaction. These enzymes are involved in starch metabolism in plants or maltose/glycogen metabolism in many microorganisms. The amylomaltase of the...
article 2005
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Steeneken, H.J.M. (author)
Door het toepassen van antigeluid is het mogelijk gebleken de geluidverzwakking van een gehoorbeschermer te verbeteren. Een toename met ca. 20 dB is mogelijk voor frequenties lagen dan 500 Hz.
article 1990
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Steeneken, H.J.M. (author), Houtgast, T. (author), Instituut voor Zintuigfysiologie TNO (author)
article 1980
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Steeneken, P.A.M. (author), Woortman, A.J.J. (author), Oudhuis, A.A.C.M. (author), TNO Kwaliteit van Leven (author)
The thickening functionality of four acetylated di-starch adipates with variations in starch source and amylose and adipate contents was evaluated in a simplified small-scale model sauce system at fourteen processing conditions with variations in temperature, shear, and pH. A processing stability factor for a given starch was defined as a...
article 2011
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Steeneken, P. (author), Binnema, D. (author), van der Maarel, M. (author), TNO Kwaliteit van Leven (author)
article 2009
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Steeneken, H.J.M. (author), Houtgast, T. (author), TNO Technische Menskunde (author)
In an earlier study we derived robust frequency-weighting functions for prediction of the intelligibility of short nonsense words.These frequency-weighting functions are applied for prediction of intelligibility such as with the speech transmission index (STI).Six independent experiments revealed essentially similar frequency-weighting functions...
article 2002
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Steeneken, P.A.M. (author), TNO Kwaliteit van Leven (author), KvL (author)
TNO Kwaliteit van Leven heeft een nieuwe vetvervanger op zetmeelbasis ontwikkeld, die als 'clean label'-ingrediënt toegepast kan worden. Het is in lage concentraties al functioneel. Hierdoor is er minder van nodig, wat leidt tot een lagere energie-inname bij consumptie.
article 2008
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Steeneken, P.A.M. (author), Helmens, H.J. (author), TNO Kwaliteit van Leven (author)
A laboratory-scale process is presented for the manufacture of starch and gluten from wheat. Main feature of this process is that whole wheat kernels are crushed dry between smooth rolls prior to wet disintegration in excess water in such way that gluten formation is prevented and fibres can be removed by sieving. Centrifugation of the endosperm...
article 2009
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Matser, A.M. (author), Steeneken, P.A.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
article 1998
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van Wijngaarden, S.J. (author), Agterhuis, E. (author), Steeneken, H.J.M. (author), TNO Human Factors (author)
A laboratory model of the wireless "Communications EarPlug" (w-CEP) was developed. Standard communication earplugs (using wires) are known to offer relatively good intelligibility of intercom speech at high ambient noise levels. The intercom sound is produced by means of a commercially available miniature transducer, integrated in the earplug....
article 2000
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Steeneken, H.J.M. (author), Houtgast, T. (author), Instituut voor Zintuigfysiologie TNO (author)
A physical method for measuring the quality of speech‐transmission channels has been developed. Essentially, the method represents an extension of the Articulation Index (AI) concept, which was developed mainly to account for distortions in the frequency domain (noise, bandpass‐limiting). The underlying concept of the present approach, based on...
article 1980
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Abel, S.M. (author), Crabtree, B. (author), Baranski, J.V. (author), Smith, D.G. (author), Thompson, M.M. (author), Steeneken, H.J.M. (author), Verhave, J.A. (author), Buckey, J.C. (author), Alvarenga, D.L. (author), Comtois, J.M. (author), TNO Technische Menskunde (author)
Introduction: Elevated hearing thresholds have been documented in some astronauts after long-term spaceflights although noise levels were lower than those normally associated with noise-induced hearing loss in ground-based operations. The present study was conducted to determine whether prolonged exposure (70 h) to levels (72 dBA) recorded on...
article 2004
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van Wijngaarden, S.J. (author), Steeneken, H.J.M. (author), Houtgast, T. (author), TNO Technische Menskunde (author)
article 2002
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Oba, T. (author), Higashimura, M. (author), Iwasaki, T. (author), Matser, A.M. (author), Steeneken, P.A.M. (author), Robijn, G.W. (author), Sikkema, J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
article 1999
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Steeneken, H.J.M. (author), Houtgast, T. (author)
Current objective measures for predicting the intelligibility of speech by an index assume that this can be obtained by simple addition of the contributions of individual frequency bands. The Articulation Index (AI, and the related Speech Intelligibility Index), and the Speech Transmission Index (STI) are based on this assumption. There is...
article 1999
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van Wijngaarden, S.J. (author), Bronkhorst, A.W. (author), Houtgast, T. (author), Steeneken, H.J.M. (author), TNO Technische Menskunde (author)
While the Speech Transmission Index ~STI! is widely applied for prediction of speech intelligibility in room acoustics and telecommunication engineering, it is unclear how to interpret STI values when non-native talkers or listeners are involved. Based on subjectively measured psychometric functions for sentence intelligibility in noise, for...
article 2004
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Steeneken, P.A.M. (author), Woortman, A.J.J. (author), TNO Kwaliteit van Leven (author)
The aim of this work was to identify the transitions in the complex DSC profiles of potato starch at a low water content. Preparative DSC involves the thermal processing of samples in stainless steel DSC pans in a way that allows their subsequent structural characterization. The low temperature (LT), dual melting (M1-M2), and high temperature ...
article 2009
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Oude Hengel, K.M. (author), Steeneken, G. (author)
Omdat de consequenties van onveilig handelen enorm kunnen zijn in de bouw- en industriesector, heeft veiligheid er de hoogste prioriteit. Daarom vinden TNO-onderzoeker Karen Oude Hengel en business developer Geeske Steeneken het een gemiste kans dat veiligheidsinstructies in de industrie op veel plekken nog steeds op een klassieke manier worden...
article 2018
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