In this paper, the m-hull sets in the join and composition of two connected graphs are characterized and their m-hull numbers are shown to be direct consequences of these characterizations.

We review some of the expectations for Primordial Black Hole evaporation and we review the properties of short Gamma Ray Bursts. It is plausible that these GRB come from PBH evaporation. We then show that the angular distribution asymmetry recently observed by us could be due to a concentration of PBH in the Galactic Arms like the Orion arm.

and MBH is the PBH mass in grams. The standard picture of PBH evaporation is that all particles which appear elementary at the energy scale of the PBH and have rest mass less than TBH are emitted directly [3]. For instance PBHs with TBH above the QCD quark-hadron transition scale ΛQH ≈ 250− 300 MeV, emit relativistic quark and gluon jets which then fragment into photons, leptons and hadrons as ...

The correlation calculation of the electronic structure of PbH is carried out with the Generalized Relativistic Effective Core Potential (GRECP) and MultiReference singleand Double-excitation Configuration Interaction (MRD-CI) methods. The 22-electron GRECP for Pb is used and the outer core 5s, 5p and 5d pseudospinors are frozen using the level-shift technique, so only five external electrons o...

tappeh bazgir is located 76km northeast of torang tappeh at the eastern fringes of the gorgan plain. the metal hoard was discovered in 2001 and excavated in 2010. the hoard is composed of a diverse assemblage and date back to the late bronze age / hissar iiic). we investigated six artifacts for studies using different methods such as metallographic studies, sem-eds, xrd, and some chemical analy...

Numerous planning models within the chemical, petroleum, and process industries involve coordinating the movement of raw materials in a distribution network so that they can be blended into final products. The uncapacitated fixed-charge transportation problem with blending (FCTPwB) studied in this paper captures a core structure encountered in many of these environments. We model the FCTPwB as ...