Deep-sea sediments enriched in rare-earth elements and yttrium (REY) plus scandium (Sc), termed “REY-rich mud,” have attracted attention as a possible resource for these critical industrial elements. Examples been reported from the western North Pacific, central low-latitude South eastern Pacific. Although previous studies of pelagic clay existence highly REY-rich mud ultraoligotrophic Pacific ...

This review paper summarizes the literature on organic matter detection by various Mars lander/rover missions, in order to understand progress towards dealing with methodological challenges analysis of Martian regolith and drilled mudstone samples. shows that missions are so far successful detecting simple some complex molecules, but their origin i.e., whether sourced cosmic dust, meteoric bomb...

Beam connections with reduced drilled section and slotted web have been presented after the Northridge earthquake (1994). Their new geometrical shapes have been resulted in weakening of beams and subsequently the bette rperformance of connections in the earthquakes. In this research, the advantages of both connections, mentioned above, have been studied in the Slotted Web Drilled Flange (SWDF) ...