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Spiekhout, Sander (author), van Elburg, Benjamin (author), Voorneveld, J.D. (author), de Jong, N. (author), Versluis, Michel (author), Bosch, Johannes G. (author), Segers, Tim (author)Phospholipid-coated microbubbles with a uniform acoustic response are a promising avenue for functional ultrasound sensing. A uniform acoustic response requires both a monodisperse size distribution and uniform viscoelastic shell properties. Monodisperse microbubbles can be produced in a microfluidic flow focusing device. Here, we investigate...journal article 2024
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Sas, Marlies (author), Hardyns, Wim (author), van Nunen, K.L.L. (author), Reniers, G.L.L.M.E. (author), Ponnet, Koen (author)There has been an increase in research into the security culture in organizations in recent years. This growing interest has been accompanied by the development of tools to measure the level of security culture in order to identify potential threats and formulate solutions. This article provides a systematic overview of the existing tools. A...journal article 2020
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- Stolker, C. (author), Jongeling, T.H.G. (author) report 2004
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Vreeburg, J.P.B. (author)The representation of the acceleration field on a rigid body contains as parameters its angular rate and acceleration vectors plus the acceleration vector at a single point of the body. A linear accelerometer measures a local component of the field. From the response of different accelerometers, three quadratic forms in the angular rate of the...report 1995
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De Wit, P.J. (author)A research program was started to study the behaviour of cohesive sediments at the Delft University of Technology in 1989. As part of this project a well-provided physico-chemicallaboratory was built within the Hydromechanics Laboratory and adequate instrumentation was purchased. These new instruments and other instruments already present in the...report 1992
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Kuijpers, E.A. (author)The Prototype Optical Diagnostic Instrument (PODI) has been extended to Teleoperated PODI (TelePODI) to allow for the study of telescience and image processing for microgee related instrumentation. TelePODI has been integrated in the Telescience Test Bed, phase I, at ESTEC to simulate remote control. Telescience pilot experiments have been...report 1990
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Storm van Leeuwen, S. (author)It is often necessary to correct for delay times in the units of a measurement channel, especially in the case of flight tests. In a pressure measurement channel the sensing orifice is connected to the transducer by a pressure line which may be several meters in length. In this case the pneumatic delay time might well be the major contribution...report 1990
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van de Leijgraaf, R. (author), van Dorp, W.A. (author), Storm van Leeuwen, S. (author), Udo, R. (author)Today there is an increasing pressure on the fast delivery of a newly manufactured aircraft and on the strict guarding of its performance figures. It is therefore essential to reduce the necessary time between completion of the new aircraft and the moment of deliverance to an airline. This means that production flight testing time must be...report 1989
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den Boer, R.G. (author)An experimental investigation revealed that the d5mamic response of a given pressure tube depends not only on the mean local pressure and the frequency, but also on the pressure amplitude and the boundary-layer at the tube entrance. By analyzing the flow at the entrance of the tube, the parameters are determined, which possibly play a role in...report 1988
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van der Wal, H.M.M. (author)A study has been carried out on the errors, connected with acoustic intensity measurements, measuring the sound transmission loss of panels with the intensity method. The magnitude of some measuring errors can be estimated from available publications. From measurements in a standing wave tube and on a flat plate the measuring errors have been...report 1988
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- Dorenbos, G.J. (author) report 1987
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da Riva, I. (author), Martinez, I. (author), Martinez-Val, R. (author), Sanz, A. (author), Huijser, R.H. (author), Visser, F.B. (author), Vreeburg, J.P.B. (author)The report presents a design study, within a specified envelope of resources, of laboratory for scientific research on fluid material in a space station, A survey of the scientific background of mlcrogravity experiments identifies candidate investigations. A structured description of available facilities, or earlier design studies, provides a...report 1987
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Delil, A.A.M. (author)Two-phase flow heat transport systems for the Columbus Space Platform and the Space Station are expected to incorporate systems to control the liquid flow rates into evaporative cold plates. Candidate components for such a control system are sensors monitoring the (very high) mixture quality at the cold plate exit lines, control algorithms and...report 1987
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- Wolthuis, A.J. (author) report 1985
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Vreeburg, J.P.B. (author)In the introduction of this Part the original objectives of the FPIS are recalled and the study strategy is indicated. Next chapters provide the logic and intermediate results as described in FPIS Final Report Part 1 System Aspects, Part 2 Detailed Design and Part 3 Breadboarding and Test Results. The final sections deal with important...report 1985
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- Derks, H. (author) report 1982
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- Vermeer, A.C.M. (author) report 1981
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van Schaik, F.J. (author), Storm van Leeuwen, S. (author)The transducer selection process as applied to the F29 digital data-acquisition system is discussed in detail. The selection procedure consists of interviews of the users of the system, specification of the transducer part of the data-acquisition system, transducer selection from manufacturer data, evaluation tests, integration into the data...report 1981
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- Ludikhuize, D. (author) report 1980