Seashell powder (SSP) is a waste from aquatic life that generally available near the coastal region. Due to its high calcium content, SSP can be utilized as supplementary cementitious binder. used sustainable binder replace ordinary Portland cement (OPC) and significantly reduce carbon footprint. The present study investigates effects of glass (WGP) on fresh, mechanical, microstructure properti...

In contrast to man-made materials, nature can produce materials with remarkable mechanical properties from relatively weak constituents. Nacre from seashells is a compelling example: despite being comprised mostly of a fragile ceramic (polygonal calcium carbonate tablets), it exhibits surprisingly high levels of strength and toughness. This performance is the result of an elegant hierarchical m...

Nacre seashell is a natural osteoinductive biomaterial with strong effects on osteoprogenitors, osteoblasts, and osteoclasts during bone tissue formation and morphogenesis. Although nacre has shown, in one study, to induce bridging of new bone across large non-union bone defects in 8 individual human patients, there have been no succeeding human surgical studies to confirm this outstanding pote...

NGC 5291 is an early type galaxy at the edge of the cluster Abell 3574 which drew the attention because of the unusual high amount of atomic gas (∼ 5×10 10 M) found associated to it. The HI is distributed along a huge and fragmented ring, possibly formed after a tidal interaction with a companion galaxy. We present multi-slit optical spectroscopic observations and optical/near-infrared images o...

abstract nature has developed materials, objects and processes that function from the macro scale to the nano scale. the understanding of the functions provided by objects and processes found in nature can guide us to imitate and produce appropriate architectural forms. biomimicry is a science that derives inspiration for solutions to human problems through the study of natural designs, systems...

These studies focuses on synthesizing of an efficient CaO-based-catalyst derived from the binary mixture Lattorina littorea (periwinkles shell) and Mactra coralline (seashell), apply it to transesterification a quaternary mix Carica papaya - Citrus sinesis- Hibiscus sabdariffa- Waste used. Details characterization developed catalyst was carried out using SEM, FTIR, XRD establish its catalytic p...

Indonesia is exposed to earthquakes, volcanic activities, and associated tsunamis. This particularly the case for Lombok Sumbawa Islands in West Nusa Tenggara, where evidence of tsunamis frequently observed its coastal sedimentary record. If 1815 CE Tambora eruption on Island generated a tsunami with well-identified traces surrounding islands, little known about consequences 1257 tremendous Sam...