AL-MWCNT NANOCOMPOSITE SYNTHESIZED VIA SPARK PLASMA SINTERING: EFFECT OF POWDER MILLING AND REINFORCEMENT ADDITION ON SINTERING KINETICS AND MECHANICAL PROPERTIES

In this work, the effect of mechanical milling of aluminium (Al) powder and subsequent addition of multiwalled carbon nanotubes (MWCNTs) as reinforcement followed by powder mixture consolidation via spark plasma sintering has been investigated.Grain growth during sintering, densification behaviour and mechanical properties (microhardness and compre

Abstract Graphite in metasedimentary rocks of the Eoarchean Saglek-Hebron Gneiss Complex (Canada) is depleted in 13C and has been interpreted as one of the oldest traces of life on Earth.The variation in crystallinity of this oldest graphitic carbon could possibly confirm the effect of metamorphism on original biomass, but this is still unexplored.

Despite the huge availability of software to estimate cross-sectional ruler spatial models, there are only few functions to estimate models dealing with spatial limited dependent variable.This paper fills this gap introducing the new R package spldv.The package is based on generalized methods of moment (GMM) estimators and includes a series of one-