Let f ∈ L 2 (S 2) be an arbitrary fixed function on the unit sphere S 2 , with a sufficiently small norm, and D ⊂ R 3 be an arbitrary fixed bounded domain. Let k > 0 and α ∈ S 2 be fixed. It is proved that there exists a potential q ∈ L 2 (D) such that the corresponding scattering amplitude A(α ′) = A q (α ′) = A q (α ′ , α, k) approximates f (α ′) with arbitrary high accuracy: f (α ′) − A q (α...

We investigate the continuum limit of the rooted staggered action in the 2-dimensional Schwinger model. We match both the unrooted and rooted staggered determinants with an overlap fermion determinant of two (one) flavors and a local pure gauge effective action by fitting the coefficients of the effective action and the mass of the overlap operator. The residue of this fit measures the differen...

Starch is one of the food sources that can be extracted from cereals, roots, tubers and stem. Sago palm (metroxylon spp.) example starch source. The efficiency extraction process depends on mechanical properties material. This study was conducted to determine angle repose between grated sago kinetic friction contact surface material machine. (θ) determined by using a cone shape hopper attached ...