However, for Neumann boundary nodes, discretization of the normal derivative in the Neumann condition is accomplished using one sided approximations, producing an approximate value for the solution variable at the boundary. Then, the cut stencil method allows stencils adjacent to boundaries to be treated in the same way as interior stencils, thus enabling finite difference calculations on arbitrarily complex domains. This new formulation can be combined with the higher order compact Pad Hermitian method to produce higher order cut stencil schemes.
They must be working very hard to figure out where this is going.”Longer term, Mosaic will likely fill the sinkhole with a concrete like grout and repair the heavy duty plastic liner beneath the gypsum stack.First, though, it will have to drop sonarlike equipment into the hole to map its dimensions.It isn’t yet known whether the DEP will insist that Mosaic remove phosphogypsum from the sinkhole before filling it or whether Mosaic will face fines for the spill.”Once the initial response phase is complete, we will have a more complete understanding of all circumstances surrounding the event,” Miller said. “At that time, we will turn our attention to determining the best next steps in DEP’s enforcement process.”The incident hasn’t affected the plant’s daily operations. It produces roughly 4 million tons a year of fertilizer and animal feed.But the spill has angered environmentalists, who question Mosaic’s ability to prevent the leak from contaminating the aquifer beyond Mosaic’s property line.”We don’t know how deep the monitoring wells are,” said Andy Mele, conservation chairman for the Sierra Club’s Manatee Sarasota group.
Department of Transportation records show the car never received repairs identified in a 2014 recall for shift cable fractures. That could lead to the car not shifting into park properly, creating risk the vehicle will roll away. Police are investigating to see if the unrepaired recall was a factor in this accident..
As peace fell across Europe in the winter of 1918, Europe was left with a long, gaping wound running in a jagged line across the continent. Fortified trenches zigzagged along a muddy, cratered landscape stitched together by miles and miles of barbed wire. Flying over Europe that year, a spectator would have seen a nearly unbroken wall from the Swiss frontier to the North Sea, across which two great armies had slaughtered each other with artillery, machine guns, gas, and bayonets in over four years of intense conflict..