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Harms, M.P.M. (author), Wesseling, K.H. (author), Pott, F. (author), Jenstrup, M. (author), van Goudoever, J. (author), Secher, N.H. (author), van Lieshout, J.J. (author), TNO Biomedical Instrumentation (author)The relationship between aortic flow and pressure is described by a three-element model of the arterial input impedance, including continuous correction for variations in the diameter and the compliance of the aorta (Modelflow). We computed the aortic flow from arterial pressure by this model, and evaluated whether, under orthostatic stress,...article 1999
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TNO Preventie en Gezondheid (author), van Noort, J.M. (author)Autoreactive T-cell responses directed to myelin proteins in the central nervous system are widely believed to be crucial in the pathology of multiple sclerosis (MS). However, effective ways of selectively targeting these T-cells in order to alter the clinical course of MS in a predictable manner has yet to be demonstrated. This review discusses...article 1999
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Wenczl, E. (author), van der Schans, G.P. (author), Roza, L. (author), Kolb, R.M. (author), Timmerman, A.J. (author), Smit, N.P.M. (author), Pavel, S. (author), Schothorst, A.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The question of whether melanins are photoprotecting and/or photosensitizing in human skin cells continues to be debated. To evaluate the role of melanin upon UVA irradiation, DNA single-strand breaks (ssb) were measured in human melanocytes differing only in the amount of pigment produced by culturing at two different concentrations, basic (0...article 1998
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van Wechem, S.N. (author), Brug, J. (author), van Assema, P. (author), Kistemaker, C. (author), Riedstra, M. (author), Löwik, M.R.H. (author), Centraal Instituut voor Voedingsonderzoek TNO TNO Voeding (author)In the Netherlands, the nationwide Fat Watch campaign aiming at a reduction in fat consumption was organized from 1991 onwards. This study describes the effects of the first three consecutive campaign years on attention to fat, diet and health, attitudes, self-efficacy expectations and intentions related to dietary fat reduction, and self-rated...article 1998
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Brocken, H.J.P. (author), Spiekman, M.E. (author), Pel, L. (author), Kopinga, K. (author), Larbi, J.A. (author), TNO Bouw (author)The water extraction out of mortar during brick laying was studied using nuclear magnetic resonance. The experiments show that using a fired-clay brick, the water is extracted out of the mortar within 3 minutes, whereas in the case of a sand-lime brick this takes about 10 minutes. Prewetting a fired-clay brick hardly affects the water extraction...article 1998
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Elliott, C.T. (author), Baxter, G.A. (author), Hewitt, S.A. (author), Arts, C.J.M. (author), van Baak, M. (author), Hellenäs, K.-E. (author), Johannson, A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The drug salbutamol (SBL) is a β-agonist that may be used illegally as an animal growth promoter. SBL is also a good example of a drug which is excreted in the form of glucuronides and sulfates. Such metabolites cause complexities in analysing for the presence of drug residues. In the majority of cases a process of deconjugation and sample clean...article 1998
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de Jong, E.C. (author), van Zijverden, M. (author), Spanhaak, S. (author), Koppelman, S.J. (author), Pellegrom, H. (author), Penninks, A.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Background: Peanuts are a major cause of food allergies both in children as in adults which can induce an anaphylactic shock. The identification and characterization of peanut allergens could lead to more insight into the mechanism and contribute to the improvement of diagnostic tests and treatment for peanut allergy. Objectives: In the present...article 1998
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Centraal Instituut voor Voedingsonderzoek TNO TNO Voeding (author), van Puymbroeck, M. (author), Kuilman, M.E.M. (author), Maas, R.F.M. (author), Witkamp, R.F. (author), Leyssens, T. (author), van der Zande, D.J.M. (author), Gelan, J. (author), Raus, J. (author)Current veterinary residue analysis mainly focuses on the monitoring of residues of the administered parent compound. However, it is possible that larger amounts of metabolites are excreted and that they can have a prolonged excretion period. In order to unravel specific metabolic steps and to identify possible biological markers, two in vitro...article 1998
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de Maat, M.P.M. (author), Green, F. (author), de Knijff, P. (author), Jespersen, J. (author), Kluft, C. (author), Gaubius Instituut TNO (author)Increased plasma factor VII coagulant activity (FVII:C) has been associated with the risk of ischemic heart disease (IHD). Differences in plasma FVII:C among individuals are associated with three common polymorphisms in the FVII gene. Therefore, we investigated FVII polymorphisms in four populations that differ in their risk of developing...article 1997
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van Overmeeren, R.A. (author), Sariowan, S.V. (author), Gehrels, J.C. (author), Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author)Ground penetrating radar (GPR) can provide information on the soil water content of the unsaturated zone in sandy deposits via measurements from the surface, and so avoids drilling. Proof of this was found from measurements of radar wave velocities carried out ten times over 13 months at two test sites in the Netherlands. At these same locations...article 1997
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Barak, R. (author), Ordentlich, A. (author), Barak, D. (author), Fischer, M. (author), Benschop, H.P. (author), de Jong, L.P.A. (author), Segall, Y. (author), Velan, B. (author), Shafferman, A. (author)While non-reactivability of cholinesterase from their phosphyl conjugates (aging) is attributed to an unimolecular process involving loss of alkyl group from the phosphyl moiety, no conclusive evidence is available that this is the only reaction path and involvement of other post-inhibitory processes cannot be ruled out, To address this issue,...article 1997
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van den Berg, K.J. (author), Lammers, J.H.C.M. (author), Hoogendijk, E.M.G. (author), Kulig, B.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Adult male WAG/Rij/MBL rats were dosed with lead acetate at 0, 4.0, 8.0 or 12.5 mg/kg, 5 days per week for 4 weeks. Animals were assessed prior to exposure, at the end of the 4-week exposure period and after a 2-week recovery period using a functional observational battery (FOB) and motor activity assessment. Rats were sacrificed two weeks after...article 1996
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van der Vossen, J.M.B.M. (author), Hofstra, H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The rapid identification of spoilage microorganisms is of eminent importance to the food industry. It provides the food industry with the opportunity to reduce economical losses by designing adequate intervention measures. The use of identification systems based on biochemical and physiological characteristics resulted often in disappointing...article 1996
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Degenhardt, C.E.A.M. (author), Kientz, C.E. (author), TNO Prins Maurits Laboratorium (author)The use of large volume injections has been studied for the verification of intact organophosphorus chemical warfare agents in water samples. As the use of ethyl acetate caused severe detection problems new potential solvents were evaluated. With the developed procedure, the nerve agents sarin, tabun, soman, DFP and VX can be determined in...article 1996
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Gizdulich, P. (author), Imholz, B.P.M. (author), van den Meiracker, A.H. (author), Parati, G. (author), Wesseling, K.H. (author), TNO Biomedical Instrumentation (author)Objective. Arterial pressure waveforms distort between brachial and finger arteries, causing differences mainly in systolic pressure. Distortion, reportedly, can be removed by applying a waveform filter to the finger pressure. Design. We analysed the data from two studies that detected discrepancies in systolic tracking between Finapres and...article 1996
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Jellema, W.T. (author), Imholz, B.P.M. (author), van Goudoever, J. (author), Wesseling, K.H. (author), van Lieshout, J.J. (author), Technisch Physische Dienst TNO - TH (author)1. The aims of this study were to determine the clinical feasibility of continuous, non-invasive Finapres recordings as a replacement for intrabrachial pressure during a 30 min head-up tilt, and the reliability of continuous cardiac output computation by pulse contour analysis from the finger arterial versus the brachial waveform. 2. In eight...article 1996
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Fichtinger-Schepman, A.M.J. (author), van Dijk-Knijnenburg, H.C.M. (author), Dijt, F.J. (author), van der Velde-Visser, S.D. (author), Berends, F. (author), Baan, R.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Cisplatin reacts with DNA by forming mainly bifunctional adducts via reactive monofunctional intermediates. When freshly platinated DNA was postincubated with thiourea (10 mM, at 23 or 37°C) for periods of up to 24 h, followed by determination of mono- and diadducts, a rapid initial decrease was seen in the fraction of diadducts, followed by a...article 1995
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- Meulenbelt, I. (author), Droog, S. (author), Trommelen, G.J.M. (author), Boomsma, D.I. (author), Slagboom, P.E. (author), TNO Preventie en Gezondheid (author) article 1995
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Slagboom, P.E. (author), Droog, S. (author), Boomsma, D.I. (author), TNO Preventie en Gezondheid (author)Reduction of telomere length has been postulated to be a causal factor in cellular aging. Human telomeres terminate in tandemly arranged repeat arrays consisting of the (TTAGGG) motif. The length of these arrays in cells from human mitotic tissues is inversely related to the age of the donor, indicating telomere reduction with age. In addition...article 1994
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- Kientz, C.E. (author), Prins Maurits Laboratorium TNO (author) doctoral thesis 1992