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de Vries, S.I. (author), Hopman-Rock, M. (author), Bakker, I. (author), van Mechelen, W. (author), TNO Kwaliteit van Leven (author)Purpose: To investigate the effect of guideline operationalization in terms of intensity threshold, bout duration, and days on the proportion of children meeting the health-related 60-min physical activity guideline using a subjective and an objective assessment method. Methods: Five hundred and twenty-one children (6-11 yr) completed a physical...article 2009
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Buijs, P. (author), van Heuvel, F.D. (author), Steenbeek, R. (author), TNO Kwaliteit van Leven (author)Background Employees absent from work through sickness often have contact with their GP and their occupational physician (OP). Little is as yet known about what they think of such contacts. We studied the employees' experience with and their opinions about these doctors. Method Unemployment services sent questionnaires to a sample of 5800 sick...article 2009
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van der Meer, L.G.H. (author), Yavuz, F. (author), TNO Bouw en Ondergrond (author)Estimating the capacity of a geological formation to store CO2 is not a straightforward or simple process. Bradshaw [1] has recently listed various estimations for both regional and global CO2 storage capacity. The estimations were quoted as "very large" with ranges for the estimates in the order of 100 s to 10,000 s Gt of CO2. Clearly this work...article 2009
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Meijster, T. (author), Tielemans, E. (author), Schinkel, J. (author), Heederik, D. (author), TNO Kwaliteit van Leven (author)Objectives: To effectively decrease occupational exposure to flour dust and related allergens, detailed information on exposure determinants and effectiveness of control measures is essential. In this paper, we use personal real-time exposure measurements to get more insight into the relationship between specific work characteristics, including...article 2008
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Jonson, B. (author), Zethrasus, B. (author), Beerkens, R.G.C. (author), Lankhorst, A.M. (author), TNO Industrie en Techniek (author)The technological needs to achieve CO2 neutrality during glass manufacturing have been investigated by theoretical calculations on energy balances and experimental investigations on batch reactivity and fining efficiency. The concept is based on the assumption of utilization of woody bio fuel combustion directly over the batch blanket and glass...conference paper 2008
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van Buuren, S. (author), TNO Kwaliteit van Leven (author)The standard deviation score (SDS) is a powerful tool for screening for growth-related problems. However, referral rules of the type 'if SDS(Y)<d, then refer' (for some constant d) are not optimal for answering the question: 'Does this child with measurement Y belong to the reference or to the diseased population?'. If the growth standard for...article 2008
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Fransman, W. (author), Roeleveld, N. (author), Peelen, S. (author), de Kort, W. (author), Kromhout, H. (author), Heederik, D. (author), TNO Kwaliteit van Leven (author)BACKGROUND: Nurses and other hospital workers are exposed to antineoplastic drugs during daily activities. Previous studies suggest that antineoplastic drugs at occupational exposure levels may be toxic to reproduction, but these studies are not consistent or conclusive. METHODS: Self-administered questionnaires were completed by 4393 exposed...article 2007
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van Dijk, D. (author), Spiekman, M. (author), TNO Bouw en Ondergrond (author)The European Commission has mandated CEN to produce a set of standards to support Member States for the national implementation of the EPBD. This paper focuses on one of these standards, EN ISO 13790, "Energy performance of buildings - Calculation of energy use for space heating and cooling". It describes the history of this standard which...conference paper 2007
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Paulides, M.M. (author), Bakker, J.F. (author), Zwamborn, A.P.M. (author), van Rhoon, G.C. (author), TNO Defensie en Veiligheid (author)Purpose: Investigation into the feasibility of a circular array of dipole antennas to deposit RF-energy centrally in the neck as a function of: 1) patient positioning, 2) antenna ring radius, 3) number of antenna rings, 4) number of antennas per ring and 5) distance between antenna rings. Materials and Methods: Power absorption (PA)...article 2007
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van Dijk, D. (author), Spiekman, M. (author), TNO Bouw en Ondergrond (author)The International Organization for standardization (ISO), Technical Committee 163 "Thermal Performance and Energy Use in the Built Environment" (ISO/TC 163) has produced and will produce sets of standards by reference to which performance requirements can be expressed at various levels, from materials to complete buildings. A coherent set of new...conference paper 2007
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Denier van der Gon, H.A.C. (author), Hulskotte, J.H.J. (author), Visschedijk, A.J.H. (author), Schaap, M. (author), TNO Bouw en Ondergrond (author)Comparisons of measured and model-predicted atmospheric copper concentrations show a severe underestimation of the observed concentrations by the models. This underestimation may be (partly) due to underestimated emissions of copper to air. Since the phase out of asbestos brake lining material, the composition of brake lining material has...article 2007
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Córdova, H. (author), van der Veen, T. (author), van Biesen, L. (author), TNO Informatie en Communicatietechnologie (author)In this paper we discuss the performance of different profiles of VDSL2 systems in a frequency range up to 12 MHz (bandplan 998 and 997, corresponding to the European region) using two different noise scenarios: VDSL2 Mix and VDSL2 only. The use of different power levels at the downstream is evaluated in these scenarios and it is found that...conference paper 2007
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Liefhebber, F. (author), Sijs, J. (author), TNO Industrie en Techniek (author)The rehabilitation robot Manus is an assistive device for severely motor handicapped users. The executing of all day living tasks with the Manus, can be very complex and a vision-based controller can simplify this. The lack of existing vision-based controlled systems, is the poor reliability of the computer vision in unstructured environments....conference paper 2007
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Guzik, P. (author), Piskorski, J. (author), Krauze, T. (author), Schneider, R. (author), Wesseling, K.H. (author), Wykrȩtowicz, A. (author), Wysocki, H. (author), TNO Biomedical Instrumentation (author)Aim: To analyze the correlation of the Poincaré plot descriptors of RR intervals with standard measures of heart rate variability (HRV) and spontaneous baroreflex sensitivity (BRS). A physiological model of changing respiratory rates from 6 to 15 breaths/min provided a wide range of RR intervals for analysis. Material and methods: Beat-to-beat...article 2007
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Goldbohm, R.A. (author), Tielemans, E.L.J.P. (author), Heederik, D. (author), Rubingh, C.M. (author), Dekkers, S. (author), Willems, M.I. (author), Dinant Kroese, E. (author), TNO Kwaliteit van Leven (author)It is generally recognized that human, epidemiological data, if available, are preferred as the starting point for quantitative risk analysis above the use of data from animal studies. Although methods to obtain proper risk estimates from epidemiological data are available, several impediments prevent their widespread application. These...article 2006
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van den Akker-van Marle, M.E. (author), Gurwitz, D. (author), Detmar, S.B. (author), Enzing, C.M. (author), Hopkins, M.M. (author), Gutierrez De Mesa, E. (author), Ibarreta, D. (author), TNO Kwaliteit van Leven (author)Only a few studies have addressed the cost-effectiveness of pharmacogenetics interventions in healthcare. Lack of health economics data on aspects of pharmacogenetics is perceived as one of the barriers hindering its implementation for improving drug safety. Thus, a recent Institute for Prospective Technological Studies (IPTS) study, entitled ...article 2006
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TNO Kwaliteit van Leven (author), Steenstra, I.A. (author), Verbeek, J.H. (author), Prinsze, F.J. (author), Knol, D.L. (author)Background: Back pain (including neck pain) is one of the most prevalent health problems for which physicians are consulted. Back pain can decrease the quality of life considerably during a great part of the lives of those who suffer from it. At the same time it has an enormous economic impact, mainly through sickness absence and long-term...article 2006
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Denier van der Gon, H.A.C. (author), Bleeker, A. (author), TNO Bouw en Ondergrond (author)Nitrous oxide (N2O) is a potent greenhouse gas produced in soils and aquatic systems. The UNFCCC requires participants to report 'indirect' N2O emissions, following from agricultural N losses to ground- and surface water and N deposition on (other) ecosystems due to agricultural sources. Indirect N2O emission due to atmospheric N deposition is...article 2005
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Keijzer-Veen, M.G. (author), Schrevel, M. (author), Finken, M.J.J. (author), Dekker, F.W. (author), Nauta, J. (author), Hille, E.T.M. (author), Frölich, M. (author), van der Heijden, B.J. (author), TNO Kwaliteit van Leven (author)This prospective follow-up study of 422 19-yr-old subjects born very preterm in The Netherlands was performed to determine whether intrauterine growth retardation (IUGR) predisposes to abnormal GFR and microalbuminuria in adolescents. GFR (ml/min per 1.73 m2) was estimated using the Cockcroft-Gault equation, and albumin-creatinine ratio (mg/mmol...article 2005
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Steenstra, I.A. (author), Koopman, F.S. (author), Knol, D.L. (author), Kat, E. (author), Bongers, P.M. (author), de Vet, H.C.W. (author), van Mechelen, W. (author), TNO Kwaliteit van Leven (author)Information on prognostic factors for duration of sick leave due to low-back pain (LBP) is growing. In this prospective cohort study, prognostic factors for duration of sick leave and course of disability were identified at a very early stage of sick leave due to LBP. A total of 615 workers calling in sick from work due to LBP at an occupational...article 2005