A general formalism for computing the nonlinear interactions between triads of coastally-trapped gravity and vorticity waves is developed. An analysis of the linearized problem reveals that gravity (or edge) waves and vorticity (or shear) waves exist as members of the same non-Sturm-Liouville eigenvalue problem, with unstable shear waves representing the complex eigenvalue portion of the result...

The temporal variability in currents, temperature, and particulate matter concentration were measured in the Mississippi Canyon axis where the thalweg was 300m deep from May–July and August–November 1998 using current meters, thermographs, a light-scattering sensor, and sediment traps. Canyon sediments were sampled by coring and observed using an ROV video camera. Currents in the upper Mississi...

Resistive MHD computations using the NIMROD code have found strong dependence of the low-n edge instabilities on edge current density distribution. The low-n edge localized modes can be driven unstable by increasing the edge current density across the peeling-ballooning stability boundary. When the edge peak current density is sufficiently large, the safety factor q-profile develops a region wh...

Electron transport is rapid in most National Spherical Torus Experiment, M. Ono et al., Nucl. Fusion 40, 557 2000 beam heated plasmas. A regime of improved electron confinement is nevertheless observed in low density L-mode “low-confinement” discharges heated by early beam injection. Experiments were performed in this regime to study the role of the current profile on thermal transport. Variati...

We previously reported that shear stress induces phosphorylation and disassembly of keratin intermediate filaments (IFs). Shear stress also induces a time- and strain-dependent degradation of keratin IFs, and the current study examines the mechanisms involved in degradation of keratin proteins in human A549 cells exposed to 0-24 h of shear stress (7.5-30 dynes/cm(2)). Ubiquitin was found to be ...

We have previously demonstrated that shear stress increases transcription of the endothelial nitric-oxide synthase (eNOS) by a pathway involving activation of the tyrosine kinase c-Src and extracellular signal-related kinase 1/2 (ERK1/2). In the present study sought to determine the events downstream of this pathway. Shear stress activated a human eNOS promoter chloramphenicol acetyl-CoA transf...