Zobrazeno 1 - 10
of 671
pro vyhledávání: '"A. Ollà"'
Autor:
R. Duara, D.A. Loewenstein, G. Lizarraga, M. Adjouadi, W.W. Barker, M.T. Greig-Custo, M. Rosselli, A. Penate, Y.F. Shea, R. Behar, A. Ollarves, C. Robayo, K. Hanson, M. Marsiske, S. Burke, N. Ertekin-Taner, D. Vaillancourt, S. De Santi, T. Golde, DeKosky ST
Publikováno v:
NeuroImage: Clinical, Vol 22, Iss , Pp - (2019)
The threshold for amyloid positivity by visual assessment on PET has been validated by comparison to amyloid load measured histopathologically and biochemically at post mortem. As such, it is now feasible to use qualitative visual assessment of amylo
Externí odkaz:
https://doaj.org/article/7e564226094b45259cc3d0dd26ffd645
We study the space-time scaling limits of solitons in the box-ball system with random initial distribution. In particular, we show that any recentered tagged soliton converges to a Brownian motion in the diffusive space-time scale, and also prove the
Externí odkaz:
http://arxiv.org/abs/2411.14818
Autor:
Olla, Piero
The behavior of lattice models in which time reversibility is enforced at the level of trajectories (microscopic reversibility) is studied analytically. Conditions for ergodicity breaking are explored, and a few examples of systems characterized by a
Externí odkaz:
http://arxiv.org/abs/2409.00430
We prove the hydrodynamic limit for a one-dimensional harmonic chain of interacting atoms with a random flip of the momentum sign. The system is open: at the left boundary it is attached to a heat bath at temperature $T_-$, while at the right endpoin
Externí odkaz:
http://arxiv.org/abs/2406.11408
We derive the heat equation for the thermal energy under diffusive space-time scaling for a purely deterministic microscopic dynamics satisfying Newton equations perturbed by an external chaotic force acting like a magnetic field.
Externí odkaz:
http://arxiv.org/abs/2310.13338
We consider a chain consisting of $n+1$ pinned harmonic oscillators subjected on the right to a time dependent periodic force $\cF(t)$ while Langevin thermostats are attached at both endpoints of the chain. We show that for long times the system is d
Externí odkaz:
http://arxiv.org/abs/2307.09535
Autor:
Ferrari, Pablo A., Olla, Stefano
We study the fluctuations in equilibrium for a dynamics of rods with random length. This includes the classical hard rod elastic collisions, when rod lengths are constant and equal to a positive value. We prove that in the diffusive space-time scalin
Externí odkaz:
http://arxiv.org/abs/2305.13037
We consider the macroscopic limit for the space-time density fluctuations in the open symmetric simple exclusion in the quasi-static scaling limit. We prove that the distribution of these fluctuations converge to a gaussian space-time field that is d
Externí odkaz:
http://arxiv.org/abs/2305.05319
Autor:
Olla, Piero
Publikováno v:
Phys. Rev. E 107, L062104 (2023)
Translation-invariant low-dimensional systems are known to exhibit anomalous heat transport. However, there are systems, such as the coupled-rotor chain, where translation invariance is satisfied, yet transport remains diffusive. It has been argued t
Externí odkaz:
http://arxiv.org/abs/2302.04561
Monitoring and Management of Naphthenic Acid Corrosion in Distillation Units of a Petroleum Refinery
Autor:
Giuseppe Chiofalo, Fabrizio D’Antonio, Antonino Giacobbe, Egnazio Ollà, Alessandra Saraceno, Nazareno Scarfati, Gaetana Triscari
Publikováno v:
Chemical Engineering Transactions, Vol 111 (2024)
The continuous increase in fuel prices at refueling stations and the costs of extraction, refining and supply chain management leads the Companies to purchase low-cost crude oils, characterized by high acidity and high sulphur content. The processing
Externí odkaz:
https://doaj.org/article/0a71247771454d9294b616995f314776