Results 71 to 80 of about 8,939,787 (291)

First considerations on the structure and development of the Iberian thermal low-pressure system [PDF]

open access: yesAnnales Geophysicae, 1994
During the summer a thermal low-pressure system is locked over the Iberian Peninsula. We present a first analysis of such a system using the potential vorticity approach.
S. Alonso, A. Portela, C. Ramis
doaj   +1 more source

On Ertel’s Potential Vorticity Theorem. On the Impermeability Theorem for Potential Vorticity

open access: yesJournal of the Atmospheric Sciences, 1999
Abstract Potential vorticity (PV) is usually defined as αω · gradϕ, where α is the specific volume, ω is vorticity, and ϕ is any quantity, usually a conserved one. The most common derivation of the PV theorem therefore uses the component of the vorticity equation normal to the ϕ surfaces. Since PV can also be expressed as α div(u × gradϕ) and α div(ωϕ),
openaire   +1 more source

Synergistic Mechano‐Fluidic Self‐Fusion of Poly(Vinyl Alcohol)‐Modified Liquid‐Metal Particles for Post‐Treatment‐Free Soft Electronics

open access: yesAdvanced Science, EarlyView.
Poly(vinyl alcohol)‐modified liquid‐metal particles form conductive networks through spray‐induced self‐fusion without additional post‐treatment. Spray impact initiates oxide‐shell rupture and electrical contact, while subsequent Marangoni flow and capillary forces promote particle redistribution, neck growth, and network consolidation. This sequential
Keun‐Young Yook   +13 more
wiley   +1 more source

Hydrodynamic Selection of Polymorphic Assembly Pathways in Plant Protein Amyloid Fibrils

open access: yesAdvanced Science, EarlyView.
Hydrodynamic conditions are revealed to govern polymorphic assembly of soy protein amyloid fibrils. Distinct flow‐induced drafting, kissing, and docking dynamics direct fibril growth into multiple morphologies, linking fluid mechanics with nanoscale assembly and enabling rational design of functional amyloid materials.
Zejian Xu   +8 more
wiley   +1 more source

Lumped modeling of bubbling fluidized beds for high‐temperature processes

open access: yesAIChE Journal, EarlyView.
Abstract Bubbling fluidized beds (BFBs) have been a source of study for multiple decades. Among other applications, they can be used as scalable reactors for the conversion of biomass and waste resources to fuels. Several experimental and computational studies have been devoted to correlating the interplay of hydrodynamics and heat and mass transfer in
Ravi Ramesh   +3 more
wiley   +1 more source

Analytical solutions of the potential vorticity invertibility principle

open access: yesJournal of Advances in Modeling Earth Systems, 2013
We define the f‐plane, y‐independent, potential vorticity (PV) invertibility principle as a coupled pair of first‐order partial differential equations relating the balanced wind and mass fields to the known PV.
Matthew T. Masarik, Wayne H. Schubert
doaj   +1 more source

Dynamics of Quantum Vorticity in a Random Potential [PDF]

open access: yesPhysical Review Letters, 2009
Physical Review Letters, final ...
openaire   +3 more sources

A Bioinspired Underwater Soft Robot for Active Intravesical Liquid Delivery and Mixing

open access: yesAdvanced Intelligent Systems, EarlyView.
A bioinspired underwater soft robot is reported that integrates an elastic strain energy‐driven soft robotic pump with a programmable flexible magnetic valve, enabling remotely controlled, programmable, and sustained liquid release and mixing. This functionality is enabled by the synergistic integration of elastic strain energy‐driven pumping and ...
Jacob Katona   +7 more
wiley   +1 more source

Descriptive, stratigraphic, and morpho‐functional study of the myocardium and myocardial bridges in domestic pig hearts

open access: yesThe Anatomical Record, EarlyView.
Abstract The heart is the central organ of the cardiovascular system. The myocardium is composed of a three‐dimensional network of fibers arranged in clockwise and counterclockwise helices, which are essential for proper cardiac contraction. This study aimed to describe the stratigraphic and morpho‐functional pattern of the porcine myocardium to ...
Mauricio Oliveira da Silva   +3 more
wiley   +1 more source

The extratropical transition of tropical cyclone Lili (1996) and its crucial contribution to a moderate extratropical development [PDF]

open access: yes, 2005
The transition that a tropical cyclone experiences as it moves into the extratropical environment (known as extratropical transition) can result in the decay or intensification of a baroclinic cyclone.
Gray, S. L.   +7 more
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