Commensal anomuran and brachyuran crabs were collected from extensive exploratory surveys on rocky areas where soft corals, sea anemones and sponges are found off the Visakhapatnam coast. The present study includes nine species of commensal decapod crustaceans, comprising four porcellanid crabs (Petrolisthes lamarckii (Leach, 1820), Porcellanella triloba White, 1852, Polyonyx hendersoni Southwell, 1909 and Pisidia gordoni (Johnson, 1970)), one squat lobster (Allogalathea elegans (Adams, 1847) and four brachyuran crabs (Dorippoides facchino (Herbst, 1785), Quadrella coronata Dana, 1852, Quadrella maculosa Alcock, 1898 and Sphenomerides trapezioides (Wood-Mason & Alcock, 1891). Allogalathea elegans, Polyonyx hendersoni, Pisidia gordoni, Quadrella coronata and Quadrella maculosa are new records from off Visakhapatnam.
View Article and Find Full Text PDFReaction of ω-halo-substituted nonracemic β-sulfinamido ketones with NaH afforded the β-amino cyclohexyl ketones in excellent yields and diastereoselectivity, via an intramolecular C-alkylation, α to the carbonyl group. The reaction was found to be general and can be applied for the synthesis of different cyclohexyl amino ketones and tetrahydropyrans possessing amine and acyl substitutions.
View Article and Find Full Text PDFWe report Ag nanoparticles infused with mesosphere TiO/reduced graphene oxide (rGO) nanosheet (TiO/rGO/Ag) hybrid nanostructures have been successfully fabricated using a series of solution process synthesis routes and an in-situ growth method. The prepared hybrid nanostructure is utilized for the fabrication of photovoltaic cells and the photocatalytic degradation of pollutants. The photovoltaic characteristics of a dye-sensitized solar cell (DSSC) device with plasmonic hybrid nanostructure (TiO/rGO/Ag) photoanode achieved a highest short-circuit current density () of 16.
View Article and Find Full Text PDFFarming has a plethora of difficult responsibilities, and plant monitoring is one of them. There is also an urgent need to increase the number of alternative techniques for detecting plant diseases, which is now lacking. The agriculture and agricultural support sectors in India provide employment for the great majority of the country's people.
View Article and Find Full Text PDFHierarchical MoO@MoS/rGO nanocomposites with highly active sites deliver high power density and energy density are fabricated here by using a simple two-step process, the first one is a direct anion-exchange reaction of the inorganic MoO nanorods (NRs) for growth of few-layered MoS nanosheets in a perpendicular direction and other is the composition of rGO sheets with core-shell MoO@MoS. Interestingly, how the modification of hybrid solvent in the anion-exchange mechanism and the concentration of thiourea impact on the morphologies of core-shell MoO@MoS at quantum level have been inspected. A fruitful synergistic effect between MoO/MoS core-shell nanostructures and rGO nanosheets led to a high surface area and transporting properties are inspected obviously through fundamental studies.
View Article and Find Full Text PDF