The next generation ground-based giant telescope, the European Extremely Large Telescope (E-ELT), under development by the European Southern Observation (ESO) , will have nearly 1000 hexagonal segments of 1.45m across the flats. Fast processing of these segments with high form and edge specifications has proven to be a challenge. The Zeeko Precessions sub-aperture bonnet polishing plays an impo...

Background: The importance of estrogen in regulation of fluid absorption and sperm maturation in the rodent epididymis has been established from studies on estrogen receptor-alpha knockout mice. However, functional studies on the role of estrogen in primate epididymis have been few. The main objective of this study was therefore to extend these observations and systematically analyze the presen...

We have investigated tidal forces and geodesic deviation motion in the 4D-Einstein-Gauss-Bonnet spacetime. Our results show that force depend sharply on sign of Gauss-Bonnet coupling constant. Comparing with Schwarzschild spacetime, strength becomes stronger for negative constant, but is weaker positive one. Moreover, behaves like those spacetime as constant negative, Reissner-Nordstr\"{o}m bla...

Abstract We investigate the regularized four-dimensional Einstein–Gauss–Bonnet (4 D EGB) gravity with a non-minimal scalar coupling function, which is an extension of 4 EGB theory. By introducing to Gauss-Bonnet term, we demonstrate additional contribution dynamical equations otherwise absent in dimensionally Furthermore, analyze stability system by using approach based on fixed points. Then, c...