To allow for geophysical interpretation of observed gravity gradients, several corrections must be applied. In this article expressions for gravimetric forward modeling of bathymetric (ocean density contrast) stripping corrections to GOCE gravity gradient observables are evaluated numerically. The generic expression for the bathymetric gravitational potential utilizes a depth-dependent seawater...

Vesselness filters aim at enhancing tubular structures in medical images. The most popular vesselness filters are based on eigenanalyses of the Hessian matrix computed at different scales. However, Hessian-based methods have well-known limitations, most of them related to the use of second order derivatives. In this paper, we propose an alternative strategy in which ring-like patterns are sough...

Background: Accumulation of pleural and peritoneal fluid is seen in some diseases. In order to diagnose the disease and start the treatment, one of the most important actions will be to differentiate between exudates and transudates. The objective of this study was to determine the diagnostic value of measuring the specific gravity of the fluid through...

We report the existence of a ghost- and tachyon-free sector in metric affine theories gravity, that is invariant under diffeomorphism particular Abelian symmetry. In contrast with many studied cases literature, constraints for unitarity causality are granted by nonaccidental symmetries do not ask further tuning, whose fate renormalization would be unclear. Unsurprisingly, minimal model massless...

in this paper, it has been shown that there is a special relation between horizontal and vertical gradients of gravity data and the vertical and horizontal components of magnetic data for some of 2-d sources. it has been shown that the hilbert transform is useful in calculating the vertical gradient of gravity and magnetic anomalies from the horizontal gradient for transformation of gravity and...

The Afar and Ethiopian plateaus are in a dynamic uplift due to the mantle plume, therefore, considering plume effect is necessary for any geophysical investigation including estimation of lithospheric stress this area. Earth gravity models Gravity Field Steady-State Ocean Circulation Explorer (GOCE) structure can be applied estimate tensor inside lithosphere. To do so, boundary-value problem el...

We derive the effective four-dimensional gravity action in the RandallSundrum scenario in which two 3-branes of opposite tension reside in a fivedimensional spacetime. The dimensional reduction with the Ansatz for the radion field by Charmousis et al., which solves five-dimensional linearized field equations, results in a class of scalar-tensor gravity theories. In the limit of vanishing radion...

A bstract We study inflationary solution in an extension of mimetic gravity with the higher derivative interactions coupled to gravity. Because setup is free from ghost and gradient instabilities while it hosts a number novel properties. The dispersion relation scalar perturbations develop quartic momentum correction similar inflation. Furthermore, tilt tensor can take either signs modified con...

We discuss lowering the order of the two-dimensional scalar-tensor R2 quantum gravity, by mapping the most general version of the model to a multi-dilaton gravity, which is essentially the sigma-model coupled with the Jackiw-Teitelboim-like gravity. In the continuation of our previous research, we calculate the divergent part of the one-loop effective action in a 2D scalar-tensor (dilatonic) gr...

In this work, we studied the slow-roll approximation of cosmic inflation within context $f(R,T)$ gravity, where $R$ is scalar curvature, and $T$ trace energy-momentum tensor. By choosing a minimal coupling between matter obtained modified parameters, spectral index ($n_s$), tensor ($n_{\textrm{T}}$), tensor-to-scalar ratio ($r$). We computed these quantities for general power-law potential, Nat...