Searched for: contributor:"De Graaf, G. (mentor)"
(1 - 7 of 7)
document
Janssen, C.M. (author)
Cross-shore sediment transport is an important phenomenon in coastal engineering, which mainly accounts for the short-term changes in the coastline. To study on- and offshore transport the evolution of the beach profile is considered. For investigation of the beach profile small-scale physical models are often used. A problem in using a physical...
master thesis 1993
document
Voorderhake, S.F. (author)
As the world is in need of more sustainable energy sources, the use of new gases like hydrogen or bio-gases seems to be a very attractive one. By mixing these new gases with the traditional natural gas, it becomes possible to have a smooth and economically durable transition. The amount of new gases added may be dependent on the availability,...
master thesis 2011
document
Gorte, F.B. (author)
Nowadays most of the energy needed comes from fossil fuels such as natural gas (NG). Dwindling stocks of all fossil fuels, including locally occurring natural gas reservoirs, have spurred the effort to both decrease dependence on local fuels and switch to renewable, green energy. The drawback to gas sources like Subsitute Natural Gas (SNG),...
master thesis 2012
document
Jonkman, J.A.G. (author), De Rijk, T.M. (author)
In this thesis, assigned by PlantronicsĀ®, the analysis and implementation of a colour based heart rate sensor will be discussed, which can be integrated in a sports headset. Two implementations are discussed: an RGB (Red, Green and Blue) sensor and a Light Dependent Resistor (LDR). The former setup identifies colour variations while the latter...
bachelor thesis 2015
document
Guyomard, J. (author), Stortelder, R. (author)
This thesis, assigned by Plantronics, proposes a solution to the motion artifacts that corrupt the results of PPG (Photo Plethysmo Graphic) signals and therefore the determined heart rate during physical exercises. An Infra-Red light emitting diode and phototransistor package was used to create a PPG signal that was amplified using an...
bachelor thesis 2015
document
Abarca, A.N. (author)
In this work, a novel approach is presented for in-line flow compensation using a dual-Thermal conductivity detector (TCD). TCDs demonstrate a flow dependence and require a calibration at a fixed flow rate. The dual-TCD is composed of two thin-film sensors on membranes in parallel on the same chip. Both are laterally identical, but with a...
master thesis 2015
document
Xu, D.B. (author)
Bioreactors are used nowadays to produce proteins with therapeutical effect that can treat a new range of diseases in humans. Unfortunately, measuring protein concentrations directly inside bioreactors in real time is still an unsolved challenge. This is due the large amount of compounds that can be found inside the bioreactors that interfere...
master thesis 2017
Searched for: contributor:"De Graaf, G. (mentor)"
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