Introduction: Effects of melatonin (MT) were comparatively examined on melanophores of isolated skin in adults and tadpole’s tailfin of a frog Rana cyanophlyctis. MT is generally considered as a potent melanophores aggregating hormone besides regulating the sleep wake cycle in vertebrates. Methods: Melanophore size index (MSI) was chosen as a recording parameter of the responses. Concentr...

A bstract The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes have low charge can be realised only at special points in space, leading generically to (large) gauge symmetries. Here we provide an exhaustive survey of the symmetries arising F-theory flux compactifications on products attractive K3 surfaces, with fully stabilised. We compute minimal rank left-over...

We calculate lattice renormalisation constants of local and one-link quark operators for overlap fermions and improved gauge actions in one-loop perturbation theory. For the local operators we stout smear the SU(3) links in the fermionic action. Using the popular tadpole improved Lüscher-Weisz actions at β = 8.45 and β = 8.0 we present numerical values for the Z factors in the MS scheme (partly...

Most anuran larvae show large lateral oscillations at both the tip of the tail and the snout while swimming in a straight line. Although the lateral deflections at the snout have long been considered an inefficient aspect of tadpole locomotion, a recent hydrodynamic model suggests that they may in fact help generate thrust. It is not clear though exactly where this bending takes place. The vert...

Degeneracy is a method to accommodate exact, low energy vacuum states in scalar-tensor gravitational models despite the presence of an arbitrarily large energy. However, this approach requires very particular combinations scalar field and metric couplings Lagrangian. In work we study departures from restrictive degeneracy condition -- starting fiducial model containing exact Minkowski space sol...