The water erosion prediction project (WEPP) model is a physically-based hydrology and erosion model. In recent years, the hydrology prediction within the model has been improved for forest watershed modeling by incorporating shallow lateral flow into watershed runoff prediction. This has greatly improved WEPP’s hydrologic performance on small watersheds with seasonal flows, but the current vers...

Hydraulic gold mining in the Sierra Nevada, California (1853–1884) displaced ~1.1 billion m of sediment from upland placer gravels that were deposited along piedmont rivers below dams where floods can remobilize them. This study uses topographic and planimetric data from detailed 1906 topographic maps, 1999 photogrammetric data, and preand post-flood aerial photographs to document historic sedi...

On the highlands of Mars early in the history of the planet precipitation-driven fluvial erosion competed with ongoing impact cratering. This disruption, and the multiple enclosed basins produced by impacts, is partially responsible for a long debate concerning the processes and effectiveness of fluvial erosion. The role of fluvial erosion in sculpting the early Martian landscape is explored he...

The first reported case of mucoid degeneration of the anterior cruciate ligament (MDACL) was provided by Kumar et al in 1999.1 The pathogenesis is still unclear, but this condition is thought to be secondary to ACL degeneration. A 2004 study reported theprevalence ofMDACL as 0.043%,2 but a 2008 study found a prevalence of 5.3%.3 Although MDACL is not as rare as previously thought, it is not sti...

PM10 concentrations were measured at Nellis Dunes Recreation Area (NDRA), Nevada, USA. NDRA is a desert area located 6 km northeast of the metropolitan area of Las Vegas. Three sources contribute to the dust at the site: local wind erosion, off-road vehicular activity and dust production in the city of Las Vegas. PM10 concentrations were measured during one complete year and stored as 20-min av...

OBJECTIVE To investigate the initial features and treatment of 26 consecutive patients referred with extruding orbital implants between January 1991 and December 2004. METHODS Retrospective medical record review recording the reason for enucleation, primary implant type, infection when initially seen, time to implant exposure, location of conjunctival defect, and time to surgical revision. ...

We describe a detailed real-time x-ray scattering study of the evolution of the surface morphology of Au~111! both during ion erosion with 500-eV Ar ions, and during homoepitaxial growth. We monitor the erosion and growth morphologies as a function of substrate temperature. We also monitor the surface reconstruction, since it is known to play an important role in determining growth regimes on P...