Congratulations to Justine Noël (PhD student at LEMTA) and Charlotte Maillot (PhD student at LRGP), winners of a PhD scholarship for the quality of their research project and the exemplarity of their career.
– Within the “Fluids and complex flows in industry and nature” team at LEMTA, Justine studies natural convection in phase change materials.
“One of the ways to store energy is through latent heat storage. The energy exchanged during the phase change is very important, however the phase change can be long due to the low thermal conductivity of the materials. The objective of my thesis is to understand the influence of Rayleigh-Benard convection in the liquid phase to reduce the time required for the solid-liquid transition and to increase heat transfer. Rayleigh-Benard convection occurs when the fluid is heated from below, cooled from above, unsteady density currents set the fluid in motion when they are greater than viscous and thermal dissipation effects. Using magnetic resonance imaging, we were able to observe the deformation of the solid-liquid interface after convection starts. The convection patterns evolve to keep the pattern length divided by the liquid height equal. My work has shown that the melt front grows up to 2 times faster due to convection.”
– For her part, Charlotte works on human stem cell culture processes in the LRGP BioProMo team.
“Following recent advances in the field of biotechnology, cell therapies offer new therapeutic solutions to certain complex pathologies which, to date, have no effective treatment. In this perspective, it is necessary to know how to produce large quantities of human cells while respecting the regulatory requirements of clinical grade. For stem cells, spherical and microscopic adhesion media (microcarriers) can be used as growth media, but the impact of the biochemical environment (substrate concentration and dissolved gases) and the hydromechanical environment on the cellular response are still poorly understood. My thesis project entitled “Quantification and impact of collisions between microcarriers during the culture of human mesenchymal stem cells in bioreactors” aims to study the impact of interactions between these adhesion media on the quantity and quality of stem cells produced. For this purpose, stem cells from umbilical cords are cultured under different conditions and then their quality is analyzed and correlated with the stresses that these cells have undergone during their culture.
The official presentation of the grants awarded by the Association of French Women University Graduates (AFFDU) Lorraine and by the Association Mosellane d’Enseignement Scientifique, Technique et Economique (AMESTE) took place on Thursday, March 3, 2022 in Metz.
From left to right: Catherine Thuet (President of AFFDU Lorraine), Clotilde Boulanger (VP Delegate Doctoral Strategy of the UL) Charlotte Maillot, Justine Noël and Paul Arker (President of AMESTE)
To know more about it https://www.associationdesfemmesdiplomees.fr/2022/03/04/remise-des-bourses-de-l-affdu-lorraine/