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Energieonderzoek Centrum Nederland (author), Gerlagh, R. (author), Hofkes, M.W. (author), Klaassen, G. (author), van de. Zwaan, B.C.C. (author)-report 2003
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van Driel, C. (author), Eckhard, F. (author), Feron, P.H.M. (author), Rodriguez, A. (author), Tan, G.B. (author), TNO Milieu, Energie en Procesinnovatie (author)Membrane gas absorption and desorption (MGA/MGD) for the removal of CO 2 in manned spacecraft or other enclosed environment is subject of study by Stork and TNO for many years. The system is based on the combination of membrane separation and gas absorption. Advantage of this technology is that the system not only can be used to remove the...conference paper 2003
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Feron, P.H.M. (author), Jansen, A.E. (author), TNO Milieu, Energie en Procesinnovatie (author)Evidence continues to mount that the enhanced greenhouse effect is caused by increased emissions of infrared light absorbing components. Carbon dioxide is the largest contributor as a result of the large amounts emitted in power generation processes. This has brought about a sizeable academic and industrial interest in ways to remove carbon...article 2002
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Wolken, W.A.M. (author), van Loo, W.J.V. (author), Tramper, J. (author), van der Werf, M.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)A novel lyase, combining hydratase and aldolase activity, that converts citral into methylheptenone and acetaldehyde, was purified from spores of Penicillium digitatum. Remarkably, citral lyase activity was induced 118-fold by incubating nongerminating spores with the substrate, citral. This cofactor independent hydratase/aldolase, was purified...article 2002
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Kumar, P.S. (author), Hogendoorn, J.A. (author), Feron, P.H.M. (author), Versteeg, G.F. (author), TNO Milieu, Energie en Procesinnovatie (author)A new absorption liquid based on amino acid salts has been studied for CO2 removal in membrane gas-liquid contractors. Unlike conventional gas treating solvents like aqueous alkanolamines solutions, the new absorption liquid does not wet polyolefin microporous membranes. The wetting characteristics of aqueous alkanolamines and amino acid salt...article 2002
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Energieonderzoek Centrum Nederland (author), Weeda, M. (author), den Ouden, A.C.B. (author), de Smidt, R.P. (author), Dijkstra, J.W. (author), Weijers, E.P. (author)-report 2002
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Bruijn, A.J. (author)An overview of developments and events in the Netherlands in 2000 inthe field of energy is presented. This edition comprises three parts. In the first part (Chronicle) a chronological overview is given of events in 2000 regarding governmental and energy policy, developments in the sectors natural gas and petroleum exploration, refineries and...other 2002
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TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author), Posthuma, C.C. (author), Bader, R. (author), Engelmann, R. (author), Postma, P.W. (author), Hengstenberg, W. (author), Pouwels, P.H. (author)Purification of xylulose 5-phosphate phosphoketolase (XpkA), the central enzyme of the phosphoketolase pathway (PKP) in lactic acid bacteria, and cloning and sequence analysis of the encoding gene, xpkA, from Lactobacillus pentosus MD363 are described, xpkA encodes a 788-amino-acid protein with a calculated mass of 88,705 Da. Expression of xpkA...article 2002
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TNO Fysisch en Elektronisch Laboratorium (author), Kusmierczyk-Michulec, J. (author), de Leeuw, G. (author), Robles Gonzalez, C. (author)Empirical relations between aerosol mass concentrations and Ångström parameters alpha were derived from simultaneous optical and chemical measurements on the Baltic in March 1998. The relations apply to mass concentrations of sea salt aerosol (SSA), black carbon (BC) and organic carbon (OC), expressed in terms of their ratio to the total...article 2002
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Wolken, W.A.M. (author), van der Werf, M.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Spores of Penicillium digitatum ATCC 201167 transform geraniol, nerol, citral, and geranic acid into methylheptenone. Spore extracts of P. digitatum convert geraniol and nerol NAD+-dependently into citral. Spore extract also converts citral NAD+-dependently into geranic acid. Furthermore, a novel enzymatic activity, citral lyase, which cofactor...article 2001
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Meuleman, E.E.B. (author), Willemsen, J.H.A. (author), Mulder, M.H.V. (author), Strathmann, H. (author)Various types of ethylene-propylene-diene terpolymers (EPDM) and crosslinking procedures have been investigated with pervaporation, vapor sorption, liquid sorption and gas permeation experiments. The EPDM parameters that have been changed are ethylene content, molecular weight, choice of third monomer, type of branching and various crosslinking...article 2001
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van Zijverden, M. (author), de Haar, C. (author), van Beelen, A. (author), van Loveren, H. (author), Penninks, A. (author), Pieters, R. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Some particulate matter is known to affect human health, yet the mechanism(s) by which it acts is largely unknown. One of the factors that may play a role in the immune- stimulating activity of particles is binding of allergen to particles. This may turn the particles into allergen carriers, resulting in antigen deposition within the altered...article 2001
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Reichl, F.X. (author), Durner, J. (author), Kunzelmann, K.H. (author), Hickel, R. (author), Spahl, W. (author), Hume, W.R. (author), Moes, G.W.H (author), Kehe, K. (author), Walther, U. (author), Forth, W. (author)The excretion of the dental composite component triethylene glycol dimethacrylate (TEGDMA) in feces and urine in vivo and, using the pendular perfusion technique with segments of jejunum and colon, the biliary and enteric excretion in situ were investigated in anesthetized guinea pigs. In the in situ experiments guinea pigs (n=4) received TEGDMA...article 2001
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Linders, M.J.G. (author), van den Broeke, L.J.P. (author), Nijhuis, T.A. (author), Kapteijn, F. (author), Moulijn, J.A. (author)A novel low pressure pulse-response technique, referred to as Multitrack, was applied for the simultaneous determination of the adsorption and diffusion parameters of gases in porous materials in a packed bed. Measurements were performed on two different carbons, Kureha and Sorbonorit B3, in the temperature range between 473 and 700 K. The...article 2001
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TNO Bouw (author), Polder, R.B. (author), Borsje, H. (author), de Vries, H. (author)Corrosion of reinforcement in concrete bridge decks may occur due to penetration of de-icing salts, even in the presence of an asphalt overlay. This paper reports a laboratory study into additional protection of concrete by hydrophobic treatment. It was found that hydrophobic treatment strongly reduces chloride ingress, both during semi...article 2001
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Prins Maurits Laboratorium TNO (author), Linders, M.J.G. (author), van den Broeke, L.J.P. (author), Kapteijn, F. (author), Moulijn, J.A. (author), van Bokhoven, J.J.G.M. (author)Adsorption isotherms of hexafluoropropylene (HFP), methanol and ethanol were measured under dry and humid conditions using Norit R1 carbon. The presence of water lowered the HFP capacity over the whole pressure range as compared to the single component isotherm, while increasing the methanol and ethanol capacity. The Dubinin-Radushkevich...article 2001
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Noort, D. (author), Fidder, A. (author), Hulst, A.G. (author), de Jong, L.P.A. (author), Benschop, H.P. (author), Department of Chemical Toxicology, TNO Prins Maurits Laboratory, PO Box 45, 2280 AA Rijswijk, Netherlands Department of Analysis of Toxic and Explosive Substances, TNO Prins Maurits Laboratory, PO Box 45, 2280 AA Rijswijk, Netherlands (author)Experiments were carried out to develop a standard operating procedure for analysis of sulfur mustard adducts to the N-terminal valine in haemoglobin and to explore adduct formation with albumin and keratin. In the first approach, gas chromatography-negative chemical ionization/mass spectrometry (GC-NCI/MS) of the thiohydantoin sample subsequent...article 2000
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Fidder, A. (author), Noort, D. (author), Hulst, A.G. (author), de Jong, L.P.A. (author), Benschop, H.P. (author), Prins Maurits Laboratorium TNO (author)The development of a procedure for retrospective detection and quantitation of exposure to the arsenical dichloro(2-chlorovinyl)arsine (lewisite; L1) has been initiated. Upon incubation of human blood with [14C]L1 (20 nM-0.2 mM) in vitro, more than 90% of the total radioactivity was found in the erythrocytes and 25-50% of the radioactivity...article 2000
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Rienstra, S.A. (author), Smokers, R.T.M. (author), Nijkamp, P. (author)In this paper four energy scenarios for Westy-European passenger transport are developed. To start with, the present transport system as a base-line case is described and analysed. Next, for each scenario we sketch how the passenger transport system may look like in terms of the use of various existing and future transport technologies and the...article 2000
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van de Sandt, J.J.M. (author), Meuling, W.J.A. (author), Elliott, G.R. (author), Cnubben, N.H.P. (author), Hakkert, B.C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)In vitro and in vivo skin absorption of the pesticide propoxur (2-isopropoxyphenyl N-methyl carbamate, commercially Baygon(TM) and Unden(TM); log Po/w 1.56, MW 209.2) was investigated. In vivo studies were performed in rats and human volunteers, applying the test compound to the dorsal skin and the volar aspect of the forearm, respectively. In...article 2000