document

Spatially-explicit assessment of carbon stocks in the landscape in the southern US under different scenarios of industrial wood pellet demand

Duden, A.S. (author), Verweij, P.A. (author), Faaij, A.P.C. (author), Abt, R.C. (author), Junginger, M. (author), van der Hilst, F. (author)

Whether the use of industrial wood pellets for bioenergy is part of the problem of climate change or part of the solution to climate change has been heavily debated in the academic and political arena. The uncertainty around this topic is impeded by contradicting scientific assessments of carbon impacts of wood pellet use. Spatially explicit...

article 2023

document

Risk-based approaches in food allergy

Houben, G.F. (author), Blom, W.M. (author), Meijerink, M. (author)

Food allergy has been recognized already in early history as a condition triggered in some individuals upon consumptions of specific foods. However, its recognition as an essential element to be addressed in food safety management is of much more recent date. As a consequence, risk assessment and risk management practices for food allergy are...

bookPart 2022

document

Numerical and experimental studies of a flat acoustic source that is actuated by an integrated flexure-based piezoelectric mechanism

Tajdari, F. (author), Berkhoff, A.P. (author), de Boer, A. (author)

This paper focuses on extensive numerical and experimental investigations of a thin sandwich acoustic source. Due to an energy inefficient actuation design, a thin sandwich acoustic source that was proposed in an early study is redesigned and reconstructed in the current research. The thin acoustic source in the present paper is actuated by long...

article 2020

document

Laboratory analysis of chemical warfare agents, adducts, and metabolites in biomedical samples

van der Schans, M.J. (author)

Chemical warfare agents (CWAs) are the most toxic compounds that have ever been produced. In order to develop medical countermeasures against the effects of these agents, analytical procedures to analyze these agents in their intact form in biological matrices are essential for a better understanding of the toxicological process. Although the...

bookPart 2020

document

The influence of energy recovery on the overall efficiency of acoustic sources at low frequencies

Tajdari, F. (author), Berkhoff, A.P. (author), van der Zee, R.A.R. (author), de Boer, A. (author)

article 2020

document

Numerical modeling of a flexural displacement-converter mechanism to excite a flat acoustic source driven by piezoelectric stack actuators

Tajdari, F. (author), Berkhoff, A.P. (author), de Boer, A. (author)

This paper studies an acoustic source with a relatively small thickness and a high bending stiffness. The acoustic source operates in the low frequency, quasi-static regime. The focus of the current study is on the actuation part in order to design an appropriate excitation mechanism. A flexural mechanism is modeled in combination with a...

article 2020

document

Effects of different real-time feedback types on human performance in high-demanding work conditions

Cohen, I. (author), Brinkman, W.P. (author), Neerincx, M.A. (author)

Experiencing stress during training is a way to prepare professionals for real-life crises. With the help of feedback tools, professionals can train to recognize and overcome negative effects of stress on task performances. This paper reports two studies that empirically examined the effect of such a feedback system. The system, based on the...

article 2016

document

Laboratory analysis of chemical warfare agents, adducts, and metabolites in biomedial samples

van der Schans, M.J. (author)

Chemical warfare agents (CWAs) are the most toxic compounds ever produced. To develop medical countermeasures against the effects of these agents, analytical procedures to analyze these agents in biological matrices are essential for a better understanding of the toxicological process. The need for the analysis of biomedical samples can have...

bookPart 2015

document

Nutritional surveillance in industrialized countries

Hulshof, K.F.A.M. (author), Löwik, M.R.H. (author), Welten, D.C. (author), TNO Voeding (author)

bookPart 2003

document

Immune system

Kuper, C.F. (author), de Heer, E. (author), van Loveren, H. (author), Vos, J.G. (author), TNO Voeding (author)

bookPart 2002

document

Lactobacilli as vehicles for targeting antigens to mucosal tissues by surface exposition of foreign antigens

Pouwels, P.H. (author), Vriesema, A. (author), Martinez, B. (author), Tielen, F.J. (author), Seegers, J.F.M.L. (author), Leer, R.J. (author), Jore, J. (author), Smit, E. (author), TNO Voeding (author)

bookPart 2001

document

The use of an equivalent forces method for the experimental quantification of structural sound transmission in ships

Janssens, M.H.A. (author), Verheij, J.W. (author), Thompson, D.J. (author), Technisch Physische Dienst TNO - TH (author)

Structure-borne sound transmission is a complex phenomenon, the accurate measurement of which requires advanced techniques. A multi-dimensional substitution source method is presented by which structure-borne sound transmission paths can be quantified in practical situations where it is not possible to dismount the paths. The paper illustrates,...

article 1999

document

Developments of the indirect method for measuring the high frequency dynamic stiffness of resilient elements

Thompson, D.J. (author), van Vliet, W.J. (author), Verheij, J.W. (author), Technisch Physische Dienst TNO - TH (author)

The complex stiffness of resilient elements is an important parameter required in order to model vibration isolation for many applications. Measurement methods are being standardized which allow such a stiffness to be measured as a function of excitation frequency for known loading conditions. This paper describes one such method, the indirect...

article 1998

document

Nutritional surveillance: In industrialized and developing countries

Hulshof, K.F.A.M. (author), Löwik, M.R.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)

bookPart 1998

document

Theoretical optimization of track components to reduce rolling noise

Vincent, N. (author), Bouvet, P. (author), Thompson, D.J. (author), Gautier, P.E. (author), Technisch Physische Dienst TNO - TH (author)

The control of railway rolling noise requires a reduction in wheel and track noise emission. In this paper, a parametric study of the possible minimization of the track sound power is presented. In an initial global approach, a number of potential variations in track parameters are assessed in terms of their likely effect on rolling noise. From...

article 1996

document

Study techniques

van Dokkum, W. (author), Fairweather-Tait, S.J. (author), Hurrell, R. (author), Sandström, B. (author), TNO Voeding (author)

bookPart 1996

document

A calculation model for the noise from steel railway bridges

Janssens, M.H.A. (author), Thompson, D.J. (author), Technisch Physische Dienst TNO - TH (author)

The sound level of a train crossing a steel railway bridge is usually about 10 dB higher than on plain track. In the Netherlands there are many such bridges which, for practical reasons, cannot be replaced by more intrinsically quiet concrete bridges. A computational model is described for the estimation of noise levels due to a train crossing a...

article 1996

document

Experimental validation of the twins prediction program for rolling noise. Pt.2: Results

Thompson, D.J. (author), Fodiman, P. (author), Mahé, H. (author), Technisch Physische Dienst TNO - TH (author)

Two extensive measurement campaigns have been carried out to validate the TWINS prediction program for rolling noise, as described in part 1 of this paper. This second part presents the experimental results of vibration and noise during train pass-bys and compares them with predictions from the TWINS program. The model is found to give quite...

article 1996

document

On the relationship between wheel and rail surface roughness and rolling noise

Thompson, D.J. (author), Technisch Physische Dienst TNO - TH (author)

Theoretical models linking rolling noise and surface roughness have been available for some 20 years. For even longer, the qualitative link has been acknowledged between the presence of visible corrugation on rail or wheel surfaces and increased noise generation. This roughness, or undulation in the surface profile, has wavelengths of most...

article 1996

document

Rapporteur's report: Session 2

Thompson, D.J. (author), Technisch Physische Dienst TNO - TH (author)

article 1996