Ranunculus L. with about 600 species is the largest genus in the Ranunculaceae. Problems in the taxonomy of the genus are due to high variability and polymorphism among different individuals and populations of certain species. Morphological characters of nectar scale have been considered as valuable taxonomical characters in some perennial species in some groups (Praemorsa, Grumosa, Rhizomatosa...

First-principle calculations have been investigated to study the adsorption of the molecules (SO2, CO, NH3, CO2, NO2, and NO) on the surface of mono boron (B) B-doped and dual B-doped graphene sheets to explore their potential applications as sensors. Our findings indicate that the adsorption of (CO and NH3) on B-doped graphene and (CO and ...

In this paper, we study the capped vertex functions associated to certain zero-dimensional type-A Nakajima quiver varieties. The insertion of descendants into can be expressed by Macdonald operators, which leads explicit combinatorial formulas for functions. We determine monodromy and show that it coincides with elliptic R-matrix symplectic dual variety. apply our results give characters tautol...

A ∂-analogue of differential characters for complex manifolds is introduced and studied using a new theory of homological spark complexes. Many essentially different spark complexes are shown to have isomorphic groups of spark classes. This has many consequences: It leads to an analytic representation of O-gerbes with connection, it yields a soft resolution of the sheaf O by currents on the man...

discourse about public safety. In England and Wales, for example, concern about women’s safety has spurred the Home Office, the police, and local authorities to issue safety advice to women. The recognition of the impact of fear of crime (Grade 1989) and the spotlight upon crime prevention combine to place women as prime consumers of targeted advice about personal safety (and indeed, as custome...

We present a set of explicit conditions, involving the components of the elastic stiffness tensor, which are necessary and sufficient to ensure the strong ellipticity of an orthorhombic incompressible medium. The derivation is based on the procedure developed by Zee and Sternberg (Arch. Rat. Mech. Anal. 83 (1983)) and, consequently, is also applicable to the case of the homogeneously pre-stress...

We calculate smoothed correlators for a large random matrix model with a potential containing products of two traces trW1(M) ·trW2(M) in addition to a single trace trV (M). Connected correlation function of density eigenvalues receives corrections besides the universal part derived by Brézin and Zee and it is no longer universal in a strong sense. On leave of absence from National Laboratory fo...

The goal of this paper was to conduct an empirical study on the effects of leadership-corruption on the development of Nigeria. The study is model two theories; the idealistic theory and the anomie theory. The study sought among others: to ascertain the relationship between leadership corruption and development in Nigeria. To assess the extent to which leadership corruption affects service deli...

1. Introduct ion. Despite the formal similarities between Yang-Mills and Maxwell theories, it is wellknown that the definition o f charge is much more subtle in the non-abelian case because the field strengths, rather than being invariants, transform as gauge vectors. The same situation occurs in gravity where the curvatures are gauge tensors and the "charges" include energy; but there is by no...