T he main purpose of this paper is to investigate and compare the impact of tourism on air pollution in selected developed and developing countries during the period of 1995-2014. To this end, at first, the model was designed based on the Environmental Kuznets Curve (EKC) assumptions and with the presence of the major influencing factors on air pollution along with the international ...

The conversion of latent transforming growth factor beta (LTGF-/~) to the active species, transforming growth factor beta (TGF-/5), has been characterized in heterotypic cultures of bovine aortic endothelial (BAE) cells and bovine smooth muscle cells (SMCs). The formation of TGF-B in co-cultures of BAE cells and SMCs was documented by a specific radioreceptor competition assay, while medium fro...

Many years ago, Sommerville classified the tilings of the sphere with congruent spherical triangles – under some assumptions. Later, Davies did the same, under only the restriction that the triangles should meet edge-to-edge. This paper surveys a recently-discovered class of tilings with congruent spherical triangle tiles that do not meet edgeto-edge. Introduction. Any simple polyhedron can be ...

According to Fisher, a hypothesis specifying a density function for X is falsi®ed (at the level of signi®cance a) if the realization of X is in the size-a region of lowest densities. However, non-linear transformations of X can map low-density into high-density regions. Apparently, then, falsi®cations can always be turned into corroborations (and vice versa) by looking at suitable transformatio...