document

How functional are 'functional foods' for our health?

van Dokkum, W. (author), Hendriks, H.F.J. (author)

article 1999

document

Fracture in brittle matrix particle composites with varying particle content

van Vliet, M.R.A. (author), van Mier, J.G.M. (author), TNO Bouw (author)

Fracture in brittle matrix particle and fibre composites can be conveniently modelled by means of lattice models where the particle and/or fibre structure is incorporated directly in the model. The particles, fibres and matrix, as well as the interfacial transition zone are assumed to behave as a continuum. This means that no further internal...

conference paper 1999

document

Keuze van compatibele reparatiemortels. Beginnen bij schadediagnose (Compatibility of repair mortars. The importance of damage diagnostics)

van Hees, R.P.J. (author), TNO Bouw (author)

Eisen te voldoen. Een flink aantal schades en gevallen van vroegtijdig onderhoud aan voegwerk laat zien dat er een aanzienlijk gebrek aan kennis bestaat met betrekking tot de compatibiliteit van reparatiemortels. De diagnose van schade en daarmee de analyse van de reden waarom men de mortel wil vervangen, wordt al te vaak vergeten! Een...

conference paper 1999

document

Direct sequencing of neuropeptides in biological tissue by MALDI-PSD mass spectrometry

Jespersen, S. (author), Chaurand, P. (author), van Strien, F.J.C. (author), Spengler, B. (author), van der Greef, J. (author)

article 1999

document

On the area of tension between energy conservation, environmental impact and IAQ

Rolloos, M. (author), TNO Bouw (author)

With the aim of conserving energy in the building sector, the Dutch Building Regulations incorporate requirements for the energy performance of houses and utility building. Use of the energy performance coefficient (EPC, see Box 1) offers excellent opportunities for enhancing the energy performance of a building without impinging on the design...

conference paper 1999

document

Recommandations for speed management on European Roads

Kallberg, V.P. (author), Allsop, R. (author), Ward, H. (author), van der Horst, A.R.A. (author), Varhelyi, A. (author)

conference paper 1999

document

Environmental effects on the radar signature of maritime targets and assets

Heemskerk, H.J.M. (author), TNO Fysisch en Elektronisch Laboratorium (author)

The member nations of task group 5 (TG05) of the NATO AC/323 SET panel have conducted the cooperative research project Livorno'96 to investigate the dependence of the radar signature on radar, geometrical and target parameters, and to investigate the environmental effects on the measured radar signature. The research included extensive...

conference paper 1999

document

Microbiological contamination of food: Analytical aspects

Notermans, S.H.W. (author), Mead, G.C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

bookPart 1999

document

Increased clearance explains lower plasma levels of tissue-type plasminogen activator by estradiol: Evidence for potently enhanced mannose receptor expression in mice

Lansink, M. (author), Jong, M. (author), Bijsterbosch, M. (author), Bekkers, M. (author), Toet, K. (author), Havekes, L. (author), Emeis, J. (author), Kooistra, T. (author), Gaubius instituut TNO (author)

Several clinical studies have demonstrated an inverse relationship between circulating levels of estrogen and tissue-type plasminogen activator (t-PA). The present study was designed to test the hypothesis that estrogen lower plasma levels of t-PA by increasing its clearance from the bloodstream. 17α-Ethinyl estradiol (EE) treatment resulted in...

article 1999

document

Transfer of contaminants from surface to hands: Experimental assessment of linearity of the exposure process, adherence to the skin, and area exposed during fixed pressure and repeated contact with surfaces contaminated with a powder

Brouwer, D.H. (author), Kroese, R. (author), van Hemmen, J.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

Estimation of dermal exposure in the workplace resulting from contact with contaminated surfaces is important in risk assessment. Models have been developed to describe the process of exposure due to transfer, but for major input parameters - that is, contact area surface and adherence - defaults are used. This study examines the effect of one...

article 1999

document

Analysis of truck platoon dynamics

Verhoeff, L. (author), Zuurbier, J. (author), Lupker, H.A. (author), TNO Wegtransportmiddelen (author)

This paper presents the analysis of truck platoon dynamics using a simulation environment. In this case the platoon consists of a number of trucks following each other using driver algorithms. MADYMO (a multibody and FE software package) and MATLAB/SIMULINK are coupled to allow for these driver algorithms to act on the detailed multibody vehicle...

conference paper 1999

document

Materials with improved properties from polymer-ceramic nanocomposites

Kuchta, F.D. (author), Lemstra, P.J. (author), Keller, A. (author), Batenburg, L.F. (author), Fischer, H.R. (author), Technisch Physische Dienst TNO - TH (author)

In order to link the fundamental research field of polymer crystallization with the technical important field of composite materials polymer-layered silicate nanocomposites from polyethylene (PE) are prepared and their morphology and properties are investigated. The effect of an external confinement introduced by highly anisotropic silicate...

conference paper 1999

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Numerieke analyse van de naadloze voegovergang in ZOAB. Oriënterende berekeningen met het eindige elementenprogramma DIANA

Vervuurt, A.H.J.M. (author), TNO Bouw (author)

conference paper 1999

document

Photovoltaisch passieve hybride componenten

van Dijk, H.A.L. (author), Versluis, R. (author), Tijssen, M. (author)

conference paper 1999

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Monitoring van betonconstructies (Monitoring of concrete structures)

Siemes, A.J.M. (author), TNO Bouw (author)

conference paper 1999

document

DNA damage, repair and tanning acceleration

Vink, A.A. (author), van den Berg, P.T.M. (author), Roza, L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

Exposure of the skin to solar ultraviolet radiation (UV) leads to various adverse effects, such as the induction of cellular damage and mutations, suppression of the skin's immune system, and the induction of skin cancer. These effects are the consequence of various molecular alterations in the skin resulting from absorption of photons....

article 1999

document

Relationship between visceral fat and PAI-1 in overweight men and women before and after weight loss

Kockx, M. (author), Leenen, R. (author), Seidell, J. (author), Princen, H.M.G. (author), Kooistra, T. (author), Gaubius instituut TNO (author)

This study was aimed at evaluating the relationship between visceral fat accumulation and plasma plasminogen activator inhibitor-1 (PAI-1) levels in healthy, obese men and women undergoing weight loss therapy. The subjects, 25 men and 25 premenopausal women, aged between 26 and 49 years, with an initial body mass index between 28 and 38 kg/m2,...

article 1999

document

Determination of daminozide in apples and apple leaves by liquid chromatography-mass spectrometry

Mol, H.G.J. (author), van Dam, R.C.J. (author), Vreeken, R.J. (author), Steijger, O.M. (author)

article 1999

document

The human element in car following models

van Winsum, W. (author)

This commentary distinguishes between the engineering-inspired formalisms used by Brackstone, M., and McDonald, M. (Transportation Research Part F (1999)) and the psychological knowledge of, and assumptions about human behaviour when car following. It outlines a preliminarry mathematical model, based on psychological knowledge about car...

article 1999

document

Computer aided design of reentrant coaxial filters including coaxial excitation

Boria, V. (author), Gerini, G. (author), Guglielmi, M. (author), TNO Fysisch en Elektronisch Laboratorium (author)

An advanced EM based CAD tool is used for the detailed characterisation of a family of reentrant coaxial waveguide filters. The EM analysis includes the effects of tuning screws and of the input/output coaxial excitation. The software is essentially used as an efficient replacement for the traditional experimental characterisation procedure. As...

conference paper 1999