Results 71 to 80 of about 13,646 (248)

Chaotic scattering in solitary wave interactions: A singular iterated-map description

open access: yes, 2007
We derive a family of singular iterated maps--closely related to Poincare maps--that describe chaotic interactions between colliding solitary waves. The chaotic behavior of such solitary wave collisions depends on the transfer of energy to a secondary ...
Moser J., Roy H. Goodman
core   +1 more source

Deserts, Rivers, Pools, and Billabongs: Water Features of the Nitrogenase Proteins, and their Functions

open access: yesChemBioChem, EarlyView.
In the protein surrounding the active site of nitrogenase there is a large anhydrous desert, traversed by two watercourses necessary for the enzyme to convert N2 to NH3. Various pools exist, but their water seems to be stagnant. This review examines the occurrence and function of water inside the protein that contains the catalytic site of the enzyme ...
Ian Dance
wiley   +1 more source

Morphology transition at depinning in a solvable model of interface growth in a random medium

open access: yes, 2013
We propose a simple, exactly solvable, model of interface growth in a random medium that is a variant of the zero-temperature random-field Ising model on the Cayley tree.
Ohta, Hiroki   +2 more
core   +3 more sources

Elliptic supersonic jet morphology manipulation using sharp-tipped lobes

open access: yes, 2020
Elliptic nozzle geometry is attractive for mixing enhancement of supersonic jets. However, jet dynamics, such as flapping, gives rise to high-intensity tonal sound.
Abhinav Anand   +6 more
core   +1 more source

Bioinspired Light‐Driven Organic Rotary Molecular Systems

open access: yesChemistryEurope, EarlyView.
This review explores the evolution of bioinspired light‐driven rotary molecular systems (RMSs), highlighting the integration of natural chromophore‐based fragments to enhance quantum efficiency, photostability, and biocompatibility. Key strategies to optimize photochemical performance and broaden functional applications are discussed, providing a ...
Lidia Hortigüela, Sara P. Morcillo
wiley   +1 more source

Quantitative Evaluation of Carotid Artery Stenosis by Multi-VENC 4D Flow MRI: Incorporating Turbulent Kinetic Energy for Clinical Validity. [PDF]

open access: yesJ Magn Reson Imaging
ABSTRACT Background Cervical internal carotid artery stenosis (ICS) is a recognized risk factor for ischemic stroke, yet morphological severity alone may not fully reflect hemodynamic alterations. Turbulent kinetic energy (TKE), derived from multi‐velocity‐encoding (multi‐VENC) four‐dimensional (4D) flow MRI, may provide a robust marker for ICS ...
Ando T   +11 more
europepmc   +2 more sources

Ghost effect from Boltzmann theory

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract Taking place naturally in a gas subject to a given wall temperature distribution, the “ghost effect” exhibits a rare kinetic effect beyond the prediction of classical fluid theory and Fourier law in such a classical problem in physics. As the Knudsen number ε$\varepsilon$ goes to zero, the finite variation of temperature in the bulk is ...
Raffaele Esposito   +3 more
wiley   +1 more source

Bifurcations and chaos in a three-dimensional generalized Hénon map

open access: yesAdvances in Difference Equations, 2018
This article presents the bifurcation and chaos phenomenon of the three-dimensional generalized Hénon map. We establish the existence and stability conditions for the fixed points of the system.
Jingjing Zheng   +3 more
doaj   +1 more source

Neimark–Sacker bifurcation and the generate cases of Kopel oligopoly model with different adjustment speed

open access: yesAdvances in Difference Equations, 2020
In this paper, bifurcations and chaotic behaviours of Kopel oligopoly model with different adjustment speed are discussed. The results imply that the Kopel oligopoly model undergoes flip bifurcation, Neimark–Sacker bifurcation, 1:3 and 1:4 resonances ...
Bo Li, Qizhi He, Ruoyu Chen
doaj   +1 more source

Dynamical nuclear spin polarization induced by electronic current through double quantum dots

open access: yes, 2011
We analyze electron spin relaxation in electronic transport through coherently coupled double quantum dots in the spin blockade regime. In particular, we focus on hyperfine interaction as the spin relaxation mechanism.
Baugh J   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy