As a practical rounded trailing edge airfoil for coaxial rotors, DBLN-526 is fore and aft symmetrical with two steps on its lower side. This has been used at the inboard section of rotor system. there are always eddies behind because edge, interaction between separation transition should be considered. Thus, unsteady Reynolds-averaged Navier-Stokes- (RANS-) based <math xmlns="http://www.w3.org/...

Hermaphroditic flowers blooming unseasonably on an oak tree (»the green oak«) of uncertain hybrid origin prompted a detailed investigation into the biology of the flowering, and the morphology of various traits of the tree, which is growing in an urban area near Zadar, northern Dalmatia, Croatia. Hermaphroditic flowers were also detected on one holm oak tree from Weihenstephan, Germany. Since t...

A lattice is called well-rounded if its minimal vectors span the corresponding Euclidean space. In this paper we completely describe wellrounded full-rank sublattices of Z, as well as their determinant and minima sets. We show that the determinant set has positive density, deriving an explicit lower bound for it, while the minima set has density 0. We also produce formulas for the number of suc...