Mathematical models of persistent compositional interfaces in the Earth's mantle may be inherently unstable, at least in some regions of the parameter space relevant to the mantle.
Next up: Video chat now has the option of switching to a persistent "Chat Head" interface rather than full screen.
Finally, the Mobile Information Device Profile (MIDP) establishes the capacities of the device, and therefore specifies the APIs related to the application (MIDP application semantics and control), user interface, persistent storage, working on line and timers.
Along with the ODDs and generic access interface, a persistent device repository implemented as RDF triple store was introduced.
As long as those interfaces were persistent i.e. you left mail, entered maps, and came back to the same screen you left mail, the perception of multi-tasking was maintained.
A combination of diffusive and advective flux across the sediment water interface led to persistent, elevated surface water Fe2+ (∼10–1000 μM).
Two of the profiles show persistent DNAPL at the aquitard interface, while two others indicate that DNAPL, present initially, was completely dissolved away producing concentration declines at the aquitard interface.
Müller and Landgrebe (2012) have proposed that the fracture zones are characterized by continuous, uplifted ridges, which could be at the origin of strong, persistent coupling at the plate interface.
The concept of persistent differential growth at the interface of a lobe and an indentation is also problematic because normally there are no gaps and very little overlap between pavement cells.
A new passive exchange meter (PEM) to measure inter-compartment fluxes of persistent organic pollutants (POPs) at the interface between soil and the atmosphere is described.
