15 PhD Positions in EU Horizon 2020 MSCA-ITN project MoSaiQC: Modular Systems for advanced integrated Quantum Clocks
Ongeveer 11 uur geleden - Universiteit van Amsterdam (UvA) - Amsterdam
For our NWO-granted project 'Sensor-assisted Optimisation of greenhouse crop Light use by Adjustment of Realised Induction State (Solaris)' we are looking for …
For our NWO-granted project 'Sensor-assisted Optimisation of greenhouse crop Light use by Adjustment of Realised Induction State (Solaris)' we are looking for a Post-Doc candidate who will work on:
Development and application of dynamic photosynthesis models in greenhouses.
We are interested in candidates with a background in the exact sciences (mathematics, physics, theoretical biology), who are eager to work on a project in the life sciences. Dutch greenhouse horticulture is highly productive, but also energy-intensive. The Dutch government aims to reduce CO2 emissions by Dutch greenhouses. Since a large fraction of energy consumption of the Dutch greenhouse horticultural industry is caused by supplemental lighting, reducing the amount of electricity used for lighting is crucial to reaching that aim. An increasing number of newly built greenhouses use LEDs instead of the conventional high-pressure sodium (HPS) lamps. HPS lamps cannot react quickly to changes in solar light intensity. LEDs not only have a higher energy efficiency per photon produced, they also can be switched on and off much more quickly than HPS lamps. The core of this proposal is the use of this feature of LED lamps, together with the application of plant physiological knowledge and sensor technology, as a basis for an innovative, 'smart lighting' system that quickly reacts to (i) fluctuations in incoming solar light intensity and (ii) changes in the crops' capacity to use light to power photosynthesis. Also, the proposed system can provide set points for greenhouse CO2 concentration, temperature and humidity, which affect photosynthetic light use efficiency in fluctuating light. Through several sensors coupled to a dynamic photosynthesis model, the system will be able to identify periods of low light use efficiency by the crop, which will further improve the set points for lighting. The system will be most effective during spring and autumn, i.e. during periods when natural light intensity frequently drops to low values, but also shows large variability, during the day. During spring and autumn, it is expected that this system can lead to electricity savings of 20% relative to a situation in which LED lamps are switched on constantly during the day. Annually, it is thus expected that this system can save 10% of electricity used for lighting, without losses in productivity.
This project is funded by and conducted in cooperation with the Dutch organisation for scientific research (NWO) and the companies Signify, Glastuinbouw Nederland, Ridder Growing Solutions and Adviesbureau JFH Snel.
On this project two postdocs will be appointed, who will work in close collaboration. The postdoc we are looking for via this advertisement must concentrate on the development of dynamic photosynthesis models. Such models already exist, but they must be adjusted and reduced to obtain versions that can be calibrated and are appropriate for the purposes of this project. The coupling between the data obtained via sensors in the greenhouse and the model is also an important ingredient of his/her task.
The other postdoc will have a background in plant physiology / plant science whose main responsibilities are Experimentation on dynamic photosynthesis and sensor modification.
The ideal candidate:
Middels onderstaande knop kun je direct solliciteren op deze vacature.Reageer op deze vacature