We consider ultracold collisions of polar molecules confined in a one-dimensional optical lattice. Using a quantum scattering formalism and a frame transformation method, we calculate elastic and chemical quenching rate constants for fermionic molecules. Taking 40K87Rb molecules as a prototype, we find that the rate of quenching collisions is enhanced at zero electric field as the confinement i...

In the present research, the effect of standoff distance on corrosion properties of the joint of three aluminum–steel explosive layers has been studied. For this purpose, the samples were welded with various standoff distance under constant explosive load. Optical Microscopy and Scanning Electron Microscopy were used to measure the quality of the joint and type of interface. Furthermore, point ...

Considering turbulent clouds containing small inertial particles, we investigate the effect of particle collision, in particular collision-coagulation, on clustering and relative motion. We perform direct numerical simulation (DNS) coagulating particles isotropic flow regime Stokes number ($St=0.001-0.54$) find that, due to radial distribution functions (RDFs) fall-off dramatically at scales $r...

A computational approach that has been used extensively in the last two decades for Hall thruster simulations is to solve a diffusion equation and energy conservation law for the electrons in a direction that is perpendicular to the magnetic field, and use discrete-particle methods for the heavy species. This “hybrid” approach has allowed for the capture of bulk plasma phenomena inside these th...

Neutrophils unexpectedly display flow-enhanced adhesion (hydrodynamic thresholding) to L-selectin in rolling or aggregation assays. We report that the primary collision efficiency (epsilon) of flowing neutrophils with preadhered neutrophils on intercellular adhesion molecule-1 (ICAM-1) or fibrinogen also displayed a maximum of epsilon approximately 0.4-0.45 at a wall shear rate of 100 s(-1), an...

Ethernet adopts the well-known Binary Exponential Back-off (BEB) scheme for collision resolution. Operation of the BEB algorithm leads to the last-come-firstserve result among competing users (also known as the “capture effect”, which allows a few “winning” users to occupy most of the available bandwidth) and BEB is also unstable for every arrival rate greater than 0. Taking the advantage of th...

The Intelligent Transportation Systeim (ITS) utilizes Vehicle-to-Vehicle (V2V) and Vehicle-to-Roadside (V2R) communication, enabled by Vehicular Ad Networks (VANETs), to implement many traffic safety application. Vehicles and Road Side Units (RSUs), in VANETs, periodically broadcast messages, known as beacons, contain many vehicle’s driving parameters such as current position, direction, speed,...