Abstract:   A two-dimensional fully implicit finite difference model, which can be easily extended to three dimensions, is developed to study the effect of cut-off walls on saltwater intrusion into the aquifers. This model consists of a coupled system of two nonlinear partial differential equations which describe unsteady density-driven groundwater flow and solute transport. The numerica...

background: brucellosis is a world-wide disease, which has a diverse clinical manifestation, and its diagnosis has to be proven by laboratory data. serum agglutination test (sat) is the most-widely used test for diagnosing brucellosis. the enzyme linked immunosorbent assay (elisa) can also determine specific antibody classes against brucella. it is a sensitive, simple and rapid test, which coul...

Abstract In order to cut off the connection between mobile terminal and communication base stations or Wi-Fi, it is necessary improve electromagnetic shielding efficiency of phone cabinet. This paper analyzes resonant characteristics cabinets. The test method has been introduced. Through Maxwell wave equation boundary conditions, cavity frequency every small drawer on cabinet derived, rectangul...

Below the acoustic cut-off frequency, oscillations are trapped within solar interior and become resonant. However, signatures of persist above these travelling waves known as pseudomodes. Acoustic oscillation frequencies to be correlated with cycle, but pseudomode predicted vary in anti-phase. We have studied variation time systematically through cycle. analyzed Sun-as-a-star data from Variabil...

The metatarsophalangeal joint (MPJ) is a significant absorber of energy in sprinting. This study examined the influence of MPJ axis choice and filter cut-off frequency on kinetic variables describing MPJ function during accelerated sprinting. Eight trained sprinters performed maximal sprints along a runway. Three-dimensional high-speed (1000 Hz) kinematic and kinetic data were collected at the ...

background: evaluation of anti-mullerian hormone (amh) cut-off levels in assisted reproductive technology (art) as predictive factor for individualization of stimulation protocols and to avoid ovarian hyperstimulation syndrome (ohss). materials and methods: in a retrospective study, 177 infertile patients were assessed for amh in serum and follicular fluid (ff) on the day of follicular puncture...