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"Clay-epoxy nanocomposites were synthesized from DGEBA resin and montmorillonite clay with an in-situ polymerization. One type of untreated clay and two types of organo clay were used to produce the nanocompsoites. The aims of this study were to examine the nanocomposite structure using different tools and to compare the results between the unmodified clay and modified clays as nanofillers. Although diffractogram in reflection mode did not show any apparent peak of both types of materials, the transmitted XRD (X-Ray Difraction) graphs, DSC (Differential Scanning Calorimeter) analysis and TEM (Transmission Electron Microscope) images revealed that the modified clay-epoxy and unmodified clay-epoxy provides different results. Interestingly, the micrographs showed that some of the modified clay layers possessed non-exfoliated layers in the modified clay-epoxy nanocomposites. Clay aggregates and a hackle pattern were found from E-SEM images for both types of nanocomposite materials. It is shown that different tools should be used to determine the nanocomposite structure."

"Mentawaians sing ritual songs enshrined in archaic texts referring to particular primates and birds, while ritual and traditional dances imitate how gibbons, sea eagles, and other animals live in the natural world. Mentawaians craft sculptures of endemic primates and unique birds. The bilou gibbon ape and various other animals also symbolize specific sacred knowledge within the sabulungan spiritual belief system and traditional cosmology of Mentawai society. Although some do succeed in surviving, many older traditions have faded away. Among the traditions which continue intact, this report aims to examine the roles of primates and birds across the arts and in the Mentawai belief system to reveal the profound depth of connection between humanity and the natural world throughout Mentawai traditional culture."