Search Results for: item/10864860/PhD-position-Global-flood-risk-assessment-and-behavioural-modelling-VU-Amsterdam/page/49/www.linkedin.com/in/apoorva-seeram

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Effects of climate induced food shortage on the vulnerability of great tit chicks to chemical exposures

  • 1 November, 2021
  • Wageningen University, Toxicology
  • dr ir NW van den Brink
  • dr I Miro Estruch

Urban environments have high levels of non-biodegradable contaminants, lower quality resources and food shortage. Around twenty percent of the recognized bird species in the world are found to live in cities (Aronson et al. 2014), which puts them at a higher risk of being exposed to chemical pollutants and trace metals that are persistent in urban areas. There is a negative influence of urban pollution on several fitness related traits, reproductive success and survival (Chamberlain et al. 2009; Seress et al. 2012). However, more importantly, exposure to chemicals and food shortage increases oxidative stress which in turn is found to negatively impact the avian immune system (Isaksson, 2015). It has been found that exposure to pollutants can lead to compromise immune defences and negatively impact immune organs, immune cell populations and signaling molecules (Ackerman et al., 2016,García-Mendoza et al., 2021). Additionally, birds living in urban environments also face challenges to find foods rich in carotenoids which are known to favour various components of the immune system (Isaksson and Andersson 2007; Chamberlain et al. 2009). A compromised immune system can increase susceptibility to infections, overall prevalence of pathogens and promotes the spread of zoonotic diseases in animals as well as humans. This project focuses on the modulatory effects of urban chemical exposure and food shortage on the immune and redox systems in birds. This research question will be assessed in field, in vitro and in ovo and the results will be compared to draw conclusions.

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Shivani Ronanki

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We provide a disciplinary and multidisciplinary research programme aimed at advanced understanding of environmental problems and advanced training of PhD candidates in this field.
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Upgrading wet slums

  • 1 January, 2010
  • IHE Delft, Coastal & Urban Risk & Resilience
  • Prof.dr.ir. C. Zevenbergen
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Koen Olthuis

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Development and Validation of a Three Dimensional Wave – Current Interaction Formulation

  • 10 June, 2022
  • 9:30-12:00
  • IHE Delft, Coastal & Urban Risk & Resilience
  • Professor Dano Roelvink
  • Dr. Mick van der Wegen

A set of three-dimensional equations was developed based on Generalized Lagranrian Mean method to simulate mean motion of fluid particle in the presence of finite amplitude surface waves. In the new equations, effects of waves are included through source terms. Both conservative and non-conservative waves are under consideration. A concept of three-dimensional wave radiation stress is introduced to express the effects of waves on the currents. Moreover, the relationship between three-dimensional wave radiation stress and vortex force representations is investigated in detail.
In the book, there are several well-known sets of equations of mean motion were selected to compare with the new set of equations. The results showed that the new set of equations is more suitable for coastal applications, especially in the presence of finite amplitude waves and strong ambient current.
To validate the new set of equations on various conditions of waves and currents, a two-dimensional numerical model was developed using Fortran language. The comparisons showed very good agreements between model results and experimental data. As shown by successful implementation and validations in the tests, the implementation of new equations in three-dimensional model code is straightforward and expected to provide consistent results from deep water to the surf zone.

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Tan Duoc Nguyen

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We provide a disciplinary and multidisciplinary research programme aimed at advanced understanding of environmental problems and advanced training of PhD candidates in this field.
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Organic carbon burial in the sediments of freshwater systems

  • 1 September, 2008
  • Wageningen University, Aquatic Ecology and Water Quality Management
  • prof. dr M Scheffer
  • dr S Kosten
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Raquel Fernandes Mendonca

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We provide a disciplinary and multidisciplinary research programme aimed at advanced understanding of environmental problems and advanced training of PhD candidates in this field.
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Real-time accounting and simulation of dynamic energy-water-material balances for achieving liveable and sustainable cities of the future

  • 1 September, 2013
  • Wageningen University, Biorefinary and Process Dynamics
  • prof. dr HHM Rijnaartsprof. dr ir KJ Keesman
  • dr HJ Cappondr ir I Leusbrock
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Elvira Bozileva

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Predicting the occurrence and spread of harmful microorganisms with statistical models

  • 1 December, 2021
  • 16:45
  • University of Twente, Earth Observation Science
  • prof.dr.ir. A. Steinprof.dr. J.E.W.C. van Gemert-Pijnen

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Magnus Niekerk

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We provide a disciplinary and multidisciplinary research programme aimed at advanced understanding of environmental problems and advanced training of PhD candidates in this field.
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