Null Field and Interior Field Methods for Laplace’s Equation in Actually Punctured Disks

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Differences between Modal Expansion and Intergral Equation Methods for Planar Near-field to Far-field Transformation

Null-field radiationless sources: comment.

We elaborate on a recent paper by Hurwitz and Gbur [Opt. Lett.39, 6529 (2014)], dealing with null-field sources. After commenting on their theory in Minkowski space, we show how the theory can be conveniently generalized to the case of curvilinear space.

Gravity field and interior structure of Rhea

Doppler data generated with the Cassini spacecraft’s radio carrier waves at Xand Ka-bands can be used to determine the quadrupole moments of Rhea’s gravitational field. The resulting tri-axial field should be consistent with the assumption that Rhea is in tidal and rotational equilibrium. If so, we can construct interior models that are consistent with Rhea’s mean density of 1236 kg/m3, determi...

Punctured Haag duality in locally covariant quantum field theories

We investigate a new property of nets of local algebras over 4dimensional globally hyperbolic spacetimes, called punctured Haag duality. This property consists in the usual Haag duality for the restriction of the net to the causal complement of a point p of the spacetime. Punctured Haag duality implies Haag duality and local definiteness. Our main result is that, if we deal with a locally covar...