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Showing 13 to 24 of 94 entries
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Dynamics of a small neutrally buoyant sphere in a fluid and targeting in Hamiltonian systems.

Physical review letters

Babiano A, Cartwright JH, Piro O, Provenzale A.
PMID: 10991049
Phys Rev Lett. 2000 Jun 19;84(25):5764-7. doi: 10.1103/PhysRevLett.84.5764.

We show that, even in the most favorable case, the motion of a small spherical tracer suspended in a fluid of the same density may differ from the corresponding motion of an ideal passive particle. We demonstrate furthermore how...

Dispersion and mixing in quasigeostrophic turbulence.

Physical review letters

Bracco A, von Hardenberg J, Provenzale A, Weiss JB, McWilliams JC.
PMID: 14995779
Phys Rev Lett. 2004 Feb 27;92(8):084501. doi: 10.1103/PhysRevLett.92.084501. Epub 2004 Feb 25.

The dynamics of passive Lagrangian tracers in three-dimensional quasigeostrophic turbulence is studied numerically and compared with the behavior of two-dimensional barotropic turbulence. Despite the different Eulerian properties of the two flows, the Lagrangian dynamics of passively advected tracers in...

Suspension and fall of heavy particles in random two-dimensional flow.

Physical review letters

Pasquero C, Provenzale A, Spiegel EA.
PMID: 12906599
Phys Rev Lett. 2003 Aug 01;91(5):054502. doi: 10.1103/PhysRevLett.91.054502. Epub 2003 Aug 01.

We investigate the settling of heavy particles in a steady, two-dimensional random velocity field, and find instances in which particle suspension occurs. This leads to a bimodal velocity distribution that may explain some apparently conflicting results reported in the...

On the key role of droughts in the dynamics of summer fires in Mediterranean Europe.

Scientific reports

Turco M, von Hardenberg J, AghaKouchak A, Llasat MC, Provenzale A, Trigo RM.
PMID: 28250442
Sci Rep. 2017 Mar 06;7(1):81. doi: 10.1038/s41598-017-00116-9.

Summer fires frequently rage across Mediterranean Europe, often intensified by high temperatures and droughts. According to the state-of-the-art regional fire risk projections, in forthcoming decades climate effects are expected to become stronger and possibly overcome fire prevention efforts. However,...

Reply.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association

May FP, Yano EM, Provenzale D, Washington D.
PMID: 31004759
Clin Gastroenterol Hepatol. 2019 Sep;17(10):2138-2139. doi: 10.1016/j.cgh.2019.04.032. Epub 2019 Apr 17.

No abstract available.

Rapidly rotating Rayleigh-Bénard convection with a tilted axis.

Physical review. E

Novi L, von Hardenberg J, Hughes DW, Provenzale A, Spiegel EA.
PMID: 31212482
Phys Rev E. 2019 May;99(5):053116. doi: 10.1103/PhysRevE.99.053116.

We numerically explore the dynamics of an incompressible fluid heated from below, bounded by free-slip horizontal plates and periodic lateral boundary conditions, subject to rapid rotation about a distant axis that is tilted with respect to the gravity vector....

Generation of Large-Scale Winds in Horizontally Anisotropic Convection.

Physical review letters

von Hardenberg J, Goluskin D, Provenzale A, Spiegel EA.
PMID: 26451558
Phys Rev Lett. 2015 Sep 25;115(13):134501. doi: 10.1103/PhysRevLett.115.134501. Epub 2015 Sep 23.

We simulate three-dimensional, horizontally periodic Rayleigh-Bénard convection, confined between free-slip horizontal plates and rotating about a distant horizontal axis. When both the temperature difference between the plates and the rotation rate are sufficiently large, a strong horizontal wind is...

Links between ruminants' food preference and their welfare.

Animal : an international journal of animal bioscience

Villalba JJ, Provenza FD, Manteca X.
PMID: 22444619
Animal. 2010 Jul;4(7):1240-7. doi: 10.1017/S1751731110000467.

Nutrition is an important aspect of welfare, and in most recommendations for the welfare of animals adequate nutrition is a primary requirement. However, in intensive livestock production systems the decision for adequate nutrition is made based on traditional paradigms...

Large scale dissipation and filament instability in two-dimensional turbulence.

Physical review letters

Elhmaidi D, von Hardenberg J, Provenzale A.
PMID: 16090622
Phys Rev Lett. 2005 Jul 01;95(1):014503. doi: 10.1103/PhysRevLett.95.014503. Epub 2005 Jul 01.

Coherent vortices in two-dimensional turbulence induce far-field effects that stabilize vorticity filaments and inhibit the generation of new vortices. We show that the large-scale energy sink often included in numerical simulations of statistically stationary two-dimensional turbulence reduces the stabilizing...

[Considerations on 52 cases of congenital heart disease observed at a surgical center].

Clinica nuova; rassegna del progresso medico internazionale

PROVENZALE L.
PMID: 14773021
Clin Nuova Rass Prog Med Int. 1950 Apr 15-22;10(15):670-700.

No abstract available.

Anatomic variant of the posterior cerebral artery.

AJR. American journal of roentgenology

Bulsara KR, Zomorodi A, Provenzale JM.
PMID: 17377015
AJR Am J Roentgenol. 2007 Apr;188(4):W395. doi: 10.2214/AJR.06.0991.

No abstract available.

Self-medication and homeostatic behaviour in herbivores: learning about the benefits of nature's pharmacy.

Animal : an international journal of animal bioscience

Villalba JJ, Provenza FD.
PMID: 22444892
Animal. 2007 Oct;1(9):1360-70. doi: 10.1017/S1751731107000134.

Traditional production systems have viewed animals as homogeneous 'machines' whose nutritional and medicinal needs must be provided in a prescribed manner. This view arose from the lack of belief in the wisdom of the body to meet its physiological...

Showing 13 to 24 of 94 entries