AVVISI DIPARTIMENTO

Italiano

Seminari vincitori procedure valutative a PA

 

 

Lunedì 12/04/2021 

Si terranno  in videoconferenza meet ii seminari dei vincitori delle ultime procedure valutative a PA:

Ai seminari si potrà assistere collegandosi al seguente link di meet:  

 

https://meet.google.com/zbg-cdsq-kem

 

Ore 12.00 - Roberto Maoli

Titolo - Cosmic shear: from its first detection to Euclid mission

Abstract - Gravitational lensing is a relativistic effect due to the banding of light when it passes through a gravitational potential. 

It is the only direct method to observe the dark matter in the universe and a very powerful probe to investigate dark matter and dark energy properties.

Cosmic shear is a coherent distortion of the shape of background galaxies when their light is deflected by the large scale structure of the universe.

It is one of the most efficient tool to study the galaxy evolution and the geometry of the Universe but it requires high quality and very deep images of a wide area of the sky.

I will illustrate some results starting from cosmic shear first detection in 2000 and focusing on the perspective of the future space mission Euclid that will be launched in 2023.   

 

Ore 12.30 - Francesco Pannarale Greco

Titolo – Gravitational-Wave Observations of Compact Binary Coalescences

Abstract – Following the successes of the first three Advanced LIGO and Advanced Virgo observing runs, gravitational-wave observations are bound to continue to impact astronomy, astrophysics, fundamental physics, and cosmology for the years to come.

I will discuss some of the challenges and opportunities brought by modelling, detecting, and interpreting gravitational-wave signals emitted by coalescing compact binaries.

These are two-body systems comprising neutron stars and black holes and are responsible for all gravitational-wave detections achieved so far.

 

Ore 13.00 - Lorenzo Rovigatti

Titolo - Designer protein assemblies with tunable phase diagrams in living cells

Abstract - Until a few years ago it was believed that the internal organisation of the cells was achieved thanks to organelles separated from the rest of the cytoplasm by membranes.

Recently, however, it has been discovered that there exist a number of organelles, also called biomolecular condensates, which have no membrane and play an important role in the cellular homeostasis.

Moreover, the mechanisms underlying the formation of these organelles, mainly composed of proteins and nucleic acids, seem to be also involved in the pathogenesis of diseases caused by abnormal aggregation of proteins such as Alzheimer's, ALS and frontotemporal 

dementia. 

Due to the high number of cytoplasm components, identifying the mechanisms that control the formation and dissolution of biomolecular condensates under physiological conditions is extremely difficult. 

To overcome this problem, we genetically engineer yeast cells to produce proteins capable of forming biomolecular condensates with controllable chemo-physical properties through self-assembly.

We then use model systems to (i) draw numerical and theoretical phase diagrams of the experimental synthetic protein system and (ii) investigate the out-of-equilibrium effects as seen in growing cells. 

Notwithstanding  the simplicity of the models we use, which neglect the presence of the solvent and of other macromolecules interacting non-specifically with the synthetic proteins, we are able to capture the essence of the physics of the experimental system, qualitatively reproducing all the 

trends observed in vivo.

L' Università degli Studi di Roma "La Sapienza" - Piazzale Aldo Moro 5, 00185 Roma