The present investigation reports a preliminary attempt of using ultrasonic energy (40 kHz) to
clean some low rank high sulfur Brazilian power-coal samples in presence of H 2 O 2 …

The present investigation reports the application of ultrasonic energy (20 kHz) to few high
sulphur Indian coal samples in aqueous and mixed alkali media (1: 1 KOH and NaOH) for …

Coal is the one of the world's most abundant fossil fuel resources. It is not a clean fuel, as it
contains ash and sulfur. SOx as a pollutant are a real threat to both the ecosystem and to …

The present paper reports an attempt of using low ultrasonic energy (20 kHz) to clean some
low rank medium to high sulfur coal samples from northeast India in the presence of H 2 O 2 …

The present work investigates utilization of ultrasound in reagent-based coal de-ashing and
de-sulfurization. The coal under study was received from Girald mine, Rajasthan, India …

While ultrasonic coal-wash is not entirely new in many countries, it has not yet been
practiced in India, though it would appear that the relatively high-ash content of Indian coals …

The emission of sulfur compounds during the combustion of coal is the main cause of
atmospheric pollution and poses a threat to human health and the ecosystem. Thus …

One of the most actual problems regarding reparation and reconditioning of ships propellers
surfaces or of some parts of hydraulic machines (turbines, pumps) is that of the erosion …

Predmet ove disertacije je odreĎivanje nastajanja i razvoja oštećenja vatrostalnih materijala
na bazi bazalta pod dejstvom kavitacije. Kao osnovni materijal za izradu uzoraka za …

The development of formulations for thermoplastic sizing on carbon fibers requires water
dispersions of small polymer particles (< 20 µm). PolyEtherKetoneKetone (PEKK) is a high …