Debasis Ray

air pollution environmental management practices odisha talcher ntpc waste water treatment anugul environment ntpc kaniha zero effluent ntpc air quality index ambient air criterion pollutants sima mantle moho discontinuity gutenberg core disconitnuity crust lehmann nife lithosphere sial earth disaster mitigation remote sensing management disaster sensing disaster management maglev trains japanese bullet trains flying trains magnetic trains futuristic trains magnetic levitation thermal and moisture thermal cooling thermoelectric effect thermodynamics