Searched for: faculty%3A%22Civil%255C+Engineering%255C+and%255C+Geosciences%22
(5,941 - 5,960 of 11,402)
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Meron Teklesenbet, M.O.T. (author)The thesis is devoted to calibration of a process-based numerical model and its application to simulation of the Late Quaternary history and stratigraphy of the Northern Adriatic Sea. Tests aimed at assessing the sensitivity of the model to initial and boundary conditions were conducted, based on geomorphologic and stratigraphic data culled from...master thesis 2009
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Van Noort, G. (author)In the northern part of the Netherlands the (magnesium containing) salt minerals carnallite and bischofite are extracted using solution mining methods, such as squeeze mining. As a consequence subsidence up to the surface is taking place, potentially causing harm to the environment. Given this fact the local government allows extraction of this...master thesis 2009
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With, C. (author), Metrikine, A.V. (author), Bodare, A. (author)As the demand for predictions of train-induced vibrations is increasing, it is essential that adequate parameters of the railway structure are given as input in the predictions. Gathering this information can be quite time-consuming and costly, especially when predictions are required for the low-frequency emission. This article presents a...journal article 2009
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Ali, S. (author), Uijttewaal, W.S.J. (author)The Objective of this study is to estimate the form drag due to vegetated weir- like obstacles. Head loss due to submerged vegetated dikes and groins has been modeled by expansion loss form drag model (Energy and momentum balance principles) and it has been compared with experimental data. An experimental study has been carried out on a scaled...conference paper 2009
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Blanckaert, K.J.F. (author), McLelland, S.J. (author)Simultaneous velocity measurements were taken using Particle Image Velocimetry (PIV) and an Acoustic Doppler Velocity Profiler (ADVP) in a sharp open-channel bend with an immobile gravel bed. The PIV measures 3D velocity vectors in a vertical plane (~40cm x 20cm) at a frequency of 7.5 Hz, whereas the ADVP measures 3D velocity vectors in a...conference paper 2009
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Den Boer, C.A. (author)In the “Delft Aardwarmte Project” cooled geothermal water is planned to be injected back into the producing formation. This paper describes the mechanisms occurring during injection and he prediction of the thermal breakthrough that are studied using a reservoir simulation model developed for the “Delft Aardwarmte Project” field properties....bachelor thesis 2009
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- Mwinchande, A.K. (author) master thesis 2009
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- Hegyi, A. (author), Hoogendoorn, S.P. (author), Schreuder, M. (author), Stoelhorst, H. (author) conference paper 2009
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- Mengiste Merine, G. (author) master thesis 2009
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Schippers, R.O. (author)In Nederland bestaat er bij het realiseren van bouwkuipen met een onderwaterbetonvloer en trekpalen, in de veelal slappe ondergrond, onzekerheid over de gevolgen die een ontlasting van de ondergrond teweeg kunnen brengen. De grond zal zich aanpassen aan de afgenomen spanningen wat gepaard gaat met uitzetting van de grond. Deze volumevergroting...master thesis 2009
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Jonkers, H.M. (author)The present invention relates to healing agent in cement-based materials and structures, wherein said healing agent comprises organic compounds and/or bacteria-loaded porous particles, which porous particles comprise expanded clay- or sintered fly ash. Furthermore, said porous particles are intact spheres, broken or crushed particles derived...patent 2009
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Van Leeuwen, C. (author)Het onderwerp Systems Engineering(SE) is onderwerp van veel discussie, wordt ervaren als een administrati eve plicht en leidt nog niet tot een vermindering van de faalkosten. In het uiteindelijke rapport hoop ik te kunnen bijdragen aan de verbetering van de toepassing van SE in de infratructurele sector. Systems Engineering kan bij een juiste...master thesis 2009
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Jardani, A. (author), Revil, A. (author), Slob, E.C. (author), Söllner, W. (author)The interpretation of seismoelectrical signals is a difficult task because coseismic and seismoelectric converted signals are recorded simultaneously and the seismoelectric conversions are typically several orders of magnitude smaller than the coseismic electrical signals. The seismic and seismoelectric signals are modeled using a finite-element...journal article 2009
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Faisal, A. (author)Gas-injection enhanced oil recovery can recover nearly all residual oil where the gas sweeps. Sweep efficiency in these processes is often poor, in large part because of gravity override of gas. Stone and Jenkins presented a model for gravity override in homogeneous reservoirs, showing that the distance gas and water travel before segregation...master thesis 2009
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Zehe, E. (author), Sivapalan, M. (author)In this paper we review threshold behaviour in environmental systems, which are often associated with the onset of floods, contamination and erosion events, and other degenerative processes. Key objectives of this review are to a) suggest indicators for detecting threshold behavior, b) discuss their implications for predictability, c)...journal article 2009
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Shrestha, D.L. (author), Kayastha, N. (author), Solomatine, D.P. (author)In this study, a methodology has been developed to emulate a time consuming Monte Carlo (MC) simulation by using an Artificial Neural Network (ANN) for the assessment of model parametric uncertainty. First, MC simulation of a given process model is run. Then an ANN is trained to approximate the functional relationships between the input...journal article 2009
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Serafini, W.E. (author)With the advent of smart fields new tools for monitoring and field management were needed. Integrated asset modelling allows improving the understanding of the field’s performance and production network, fluid flow behaviour and optimization at any stage and level during the life of the field. This approach enables the optimization of production...master thesis 2009
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Van Beekum, D. (author)The development of district heating networks in urban areas descibes an approach to achieve the goals and targets for energy saving, reduction of CO2-emissions and sustainbale energy that are stated by the government. For the development of district heating networks energy conversion systems are used of generating heat and networks are used to...master thesis 2009
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Van der Ent, R.J. (author)The importance of moisture feedback between continental precipitation and evaporation, referred to as moisture recycling, is still under debate. Most of the research in the past focused on the contribution of recycling to precipitation within a certain region only. This paper clearly distinguishes between different definitions of moisture...master thesis 2009
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Liebe, J.R. (author), Van de Giesen, N.C. (author), Andreini, M. (author), Walter, M.T. (author), Steenhuis, T.S. (author)In the semiarid regions of Africa, there are many small reservoirs used for irrigation. This study explores the practicality of using small reservoirs as runoff gauges by estimating their water storage changes using remote sensing imagery. A simple rainfall-runoff model is developed by observing the surface area and estimating the volume of...journal article 2009
Searched for: faculty%3A%22Civil%255C+Engineering%255C+and%255C+Geosciences%22
(5,941 - 5,960 of 11,402)