Helix Surface Wave Guide

Mapping the energy surface of transmembrane helix-helix interactions.

Transmembrane helices are no longer believed to be just hydrophobic segments that exist solely to anchor proteins to a lipid bilayer, but rather they appear to have the capacity to specify function and structure. Specific interactions take place between hydrophobic segments within the lipid bilayer whereby subtle mutations that normally would be considered innocuous can result in dramatic struc...

Slowness Surface Wave Surface

Unravelling the helix--a physician's guide to spiral computed tomography.

The introduction of spiral technology to computed tomography (CT) scanners in the late 1980s has revolutionised the field of CT. Spiral CT offers definite practical benefits over conventional scanners and has expanded the role of CT through the development of new scanning techniques. CT scanning now rivals magnetic resonance imaging in many areas of investigation, and for some situations is the...

Policy Guide on Surface Transportation

The United States is truly at a transportation crossroads. We have operated from a perspective that largely dates to the 1950s to build, maintain, and operate the nation's transportation infrastructure. With major energy, environmental, social, and economic challenges occurring as the current federal transportation law is scheduled for authorization, now is the time for substantive change in ou...

Numerical investigation of free surface flood wave and solitary wave using incompressible SPH method

Simulation of free surface flow and sudden wave profile are recognized as the most challenging problem in computational hydraulics. Several Eulerian/Lagrangian approaches and models can be implemented for simulating such phenomena in which the smoothed particle hydrodynamics method (SPH) is categorized as a proper candidate. The incompressible SPH (ISPH) method hires a precise incompressible hy...