Shallow-level sill emplacement can uplift Earth’s surface via forced folding, providing insight into the location and size of potential volcanic eruptions. Linking the structure and dynamics of ground deformation to sill intrusion is thus critical in volcanic hazard assessment. This is challenging, however, because (1) active intrusions cannot be directly observed, meaning that we rely on trans...

The dihydropyridine receptors (DHPR) are L-type voltage-gated calcium channels that regulate the flux of calcium ions across the cell membrane. Here we present the three-dimensional (3D) structure at approximately 27A resolution of purified skeletal muscle DHPR, as determined by electron microscopy and single particle analysis. Here both biochemical and 3D structural data indicate that DHPR is ...

Biomass material volatility generates new opportunities for port-city relationships. Alternative energy markets require specialized port facilities to handle bulk commodities like biomass. Wood pellets, a type of biomass, present warehousing challenges due combustion danger. The industrial response this risk has generated storage forms regions. return cargo reintroduces materiality as focus cit...

In this paper we define the theory and basic principles to move (redatum) the surface shots from a walk away VSP to be as if they had been located in the borehole. We will refer to this theory using several of the terms used in the literature including Time Reverse Acoustics (TRA), Seismic Interferometry (SI) and Virtual Source (VS) technology. Regardless of the name, the theory is built upon r...

The thermal environment is an important factor in the design of optical systems. This study investigated the thermal analysis technology of optical systems for navigation guidance and control in supersonic aircraft by developing empirical equations for the front temperature gradient and rear thermal diffusion distance, and for basic factors such as flying parameters and the structure of the opt...

The Antarctic plateau is a new frontier for astronomy, offering superior observing conditions to those of any other groundbased site across most of the electromagnetic spectrum. The established inland Antarctic stations of Amundsen-Scott and Vostok are now being joined by new stations at Dome A, Dome C and Dome F. Plans to deploy large telescopes are already well advanced, and within a decade s...

We present a theory of plan modification applicable to hierarchical no&ear planning. Our theory utilizes the validation structure of the stored plans to yield a flexible and conservative plan modification framework The validation structure, which constitutes a hierarchical explanation of correctness of the plan with respect to the planner’s own knowledge of the domain, is annotated on the plan ...