A review of utilization of waste polyurethane foam as lightweight aggregate in concrete.

Engineered concrete mixes using industrial waste as a construction material are an enormous step towards sustainable development and financial benefits. The refrigeration, automobile, and construction industries mainly generate polyurethane foam waste material. Most of the polyurethane foam wastes are dumped in landfills or incineration, which creates environmental effects.

Efficient Photocatalytic degradation of direct blue 15 dye using samarium doped bismuth tungstate nanosheets: A sustainable approach towards wastewater treatment.

The rare earth metal, samarium (Sm) doped bismuth tungstate (BiWO) nanoparticles were prepared by a one-pot hydrothermal method. The powder X-ray diffraction (XRD) analysis confirmed the formation of BiWO with an orthorhombic crystal structure. The crystallite size of BiWO decreased from 20.

Transverse instability in nonparaxial systems with four-wave mixing.

We present a two-dimensional coupled nonlinear Schrödinger-like system with spatial diffractions, degree of birefringence, and four-wave mixing. This system describes two physical contexts: optical pulse propagation beyond the paraxial approximation in a weakly birefringence waveguide and light propagation near exciton-polariton resonance in semiconductor superlattice materials. We find that such systems naturally support different types of diffraction profiles, including spherical, ellipsoidal, and hyperbolic structures.

The influence of π-linkers configuration on properties of 10-hexylphenoxazine donor-based sensitizer for dye-sensitized solar cell application - Theoretical approach.

10-Hexylphenoxazine based dyes with A-(π)-D-(π)-A architecture is designed and investigated systematically for dye-sensitized solar cell (DSSC) application by Density Functional Theory (DFT) and Time-dependent Density Functional Theory (TD-DFT). The designed sensitizers consist of 10-Hexylphenoxazine as electron donor and cyanoacrylic acid as an acceptor, connected by the Thiophene and Cyanovinyl π-spacers configurations with symmetrical and asymmetrical form. The effect of π-spacers configurations on the electronic and optical properties of the dyes is also investigated.

Unidirectional growth of 〈001〉 triglycine zinc chloride crystal by Sankaranarayanan-Ramasamy (SR) method and its characterization.

Bulk nonlinear optical single crystal of triglycine zinc chloride (TGZC) of size 15mm diameter and 50mm length was successfully grown from solution by unidirectional growth method of Sankaranarayanan-Ramasamy (SR). The growth conditions were optimized and a maximum growth rate of 1.5mm per day was realized.