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Van der Laan, H. (author)High concentrations of arsenic in drinking water form a major threat for public health in more than 70 countries worldwide. The situation is Bangladesh is seen as the worst incidence of arsenic poisoning: it is believed that 30 million people in Bangladesh are exposed to an arsenic concentration exceeding 50 ?g/L. Recently subsurface treatment...master thesis 2009
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Goorden, N. (author), Hakvoort, H. (author), Van der Krogt, R. (author)In opdracht van Vitens is in 2005 een koppeling ontwikkeld op basis van de modelcodes van Modflow en Sobek. Deze koppelingssoftware is getest in pilot gebied Wierden, onderdeel van het Regge-stroomgebied (Gehrels en Hakvoort, 2005). De resultaten van de test wezen uit dat de ontwikkelde software een krachtig instrumentarium is dat inzetbaar is...report 2009
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Mikkers, Y. (author)Research performed of the last decades in the waste water treatment field has shown the ability of zeolites to adsorb ammonium via ion-exchange. Recent research has proven that zeolites might also be capable to remove the lower concentrations of ammonium present in groundwater to the for drinking water required standards. This makes it a...master thesis 2009
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Widiastuti, E. (author)Terrestrial water storage (TWS) can be defined as the storage of water on and below the land surface, and includes snow, ice, surface water, soil moisture, and ground water. TWS is a key component of the terrestrial and global hydrological cycles, which have important control over the water, energy and biogeochemical fluxes, and plays a major...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
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Kleerekoper, L. (author)The Urban Heat Island (UHI) effect assumes that cities accumulate heat and are consequently warmer than their peripheries. During the evening and at night, when the countryside has cooled down and the city retains the heat accumulated during the day, the difference is at its maximum. Global climate change brings a temperature rise in the...master thesis 2009
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Egon, A. (author)Coral reefs are highly diverse ecosystems that provide food, income, and coastal protection for hundreds of millions of coastal dwellers. They are found in tropical and semi tropical areas spread throughout South-east Asia, the Caribbean, the Indonesian archipelago, on Australian coasts and in the Pacific islands. Coral reefs are subject to both...master thesis 2009
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Bizzarri, S.B. (author)Ecatepec, Mexico city. Through the analysis of the water process the WTN will be able to effects social and built environment.master thesis 2009
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De Kat, R. (author), Saunders-Smits, G.N. (author)It is important that young people who chose to pursue a degree in engineering stick with their choice. Unfortunately students often loose their motivation during their first year. This paper gives an example of how the Faculty of Aerospace Engineering of Delft University in The Netherlands manages to keep a large number of freshmen motivated and...conference paper 2009
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Midorikawa, T. (author), Pelova, G.I. (author), Walraven, J.C. (author)Self-Compacting Concrete is a relatively new type of concrete. Up to now only a few models have been developed to explain its physical behaviour, like the Water Layer Model and the Excess Paste Model. In this paper, the difference between the Water Layer Model and the Excess Paste Model is highlighted, and the validity of the Water Layer Model...journal article 2009
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Fennis, S.A.A.M. (author), Walraven, J.C. (author), Den Uijl, J.A. (author)Ecological concrete can be designed by replacing cement with fillers. With low amounts of cement it becomes increasingly important to control the water demand of concrete mixtures. In this paper a cyclic design method based on particle packing is presented and evaluated on the basis of experiments on cement pastes combined with quartz powder....journal article 2009
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Son Tran, T. (author)Carbonated water flooding (CWF) is an enhanced oil recovery method where an oil reservoir is flooded with water containing dissolved CO2. The CO2 is then transferred into the oil phase leading to the swelling of the oil and to the reduction of its viscosity. This method was proven by several field trials but did not reach the status of a routine...master thesis 2009
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Vinke, F.R.S. (author)The effect of introducing an air film around a submerged water jet is examined in laboratory experiments. The objective is to reduce the friction forces between the water jet and the ambient fluid, making a jet potentially more effective at a larger distance. The test are conducted at a physical scale comparable to dredging practise, contrary to...master thesis 2009
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Spyropoulou, S. (author)This report contains the work of Stella Spyropoulou for the final MSc thesis for the Coastal and Marine Engineering and Management Erasmus Mundus Postgraduate diploma, with the help and supervision of the UPC (Universitat Polytechnica de Catalunya) staff Marc Mestres and Manel Grifoll. An effort is made in this thesis to identify dominating and...master thesis 2009
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Van Schagen, K.M. (author)The drinking water in the Netherlands is of high quality and the production cost is low. This is the result of extensive research in the past decades to innovate and optimise the treatment processes. The processes are monitored and operated by motivated and skilled operators and process technologists, which leads to an operator-dependent,...doctoral thesis 2009
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Van Aalderen, M.W. (author)Royal Boskalis Westminster nv is an international group with a leading position in the world market for dredging services. In most practical cases a jet installation or a big discharge aperture is used for the fast unloading of a load of sand. When a relative small discharge opening, without the use of a jet installation, is used to unload a...master thesis 2009
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Kai, C. (author)Coastal zones which are known as the interface between continents and oceans are vital and important to human beings because a majority of the world's population live in such zones (Nelson, 2007). Coastal systems are among the most dynamic and energetic environments on earth and they are continuously changing because of the dynamic interaction...report 2009
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Sibanda, T. (author), Nonner, J.C. (author), Uhlenbrook, S. (author)The Nyamandhlovu aquifer is the main water resource in the semi-arid Umguza district in Matebeleland North Province in Zimbabwe. The rapid increase in water demand in the city of Bulawayo has prompted the need to quantify the available groundwater resources for sustainable utilization. Groundwater recharge estimation methods and results were...journal article 2009
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Valk, A. (author)The safety of a large part of the Netherlands depends on sea dikes. Due to climate change, a sea level rise is predicted. Together with stronger storms and more wave attack, wave overtopping on the current dikes will increase. As a response, crest levels of the dikes need to be raised in order to meet the present regulations for wave overtopping...master thesis 2009
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Ebbens, R.E. (author)This thesis is about the stability of toe material for rubble mound breakwaters in depth limited conditions. The present equation, Van der Meer 1998, gives results for depth limited conditions but is not validated. The empirical equation is based on physical model tests done by Gerding 1993. The Van der Meer equation implies deep water and...master thesis 2009