A simple, sensitive, selective, and non-extractive UV-Vis spectrophotometric method for the determination of cadmium, lead, chromium, arsenic in biological, soil water samples using synthesized characterized phenyl hydrazone; glutaraldehydephenyl hydrazone (GPH) as chromogenic reagent was developed. GPH new analytical reagents direct selected metals interest a slightly acidic pH 6.5-7.5 20 % di...

Abstract. The short- and long-term variability of the surface spectral solar ultraviolet (UV) irradiance is investigated across Italy using high-quality ground-based measurements from three locations: Aosta (45.7? N, 7.4? E, 570 m a.s.l.), Rome (41.9? 12.5? 15 75 Lampedusa (35.5? 12.6? 50 a.s.l.). sites are characterized by different environmental conditions represent almost full latitudinal ex...

Parallel heuristic search algorithms are widely used in artificial intelligence. This paper describes novel parallel variants of two standard sequential search algorithms, the standard Davis Putnam algorithm (DP); and the same algorithm extended with conflict-directed backjumping (CBJ). Encouraging preliminary results for the GpH parallel dialect of the non-strict functional programming languag...

In this paper, some new W-GPH-KKM theorems are established in pseudo H-spaces without any linear and convex structure under much weaker assumptions, and next as their applications, some new coincidence theorems, maximal element theorems, and existence theorems of solutions to generalized equilibrium problems are proved in pseudo H-spaces. The results represented in this paper unify and extend s...