nanocrystalline complex oxides have been synthesized by combination of sol–gel auto combustion and ultrasonic irradiation techniques using copper nitrate, zinc nitrate as metallic nitrates and glycine, urea and thiourea as fuels. sol-gel combustion (combination of the chemical sol–gel process and the combustion process) as a proper synthesized technique is used to synthesize zno/cuo nanocomposi...

Mixed oxide catalysts Ru x Ir 1-x O 2 with varying composition ( = 0, 0.25, 0.5, 0.75, 1.0) supported on CeO , γ-Al 3 or ZrO are successfully prepared and tested in the catalytic propane combustion terms of activity stability. Pure IrO reveals a significantly lower than x≥0.25. For low conversion, pure RuO turns out to be most active catalyst, while at higher 0.75 0.25 is found more pointing to...

The paper describes correlation between combustion knock intensity and combustion rate calculated as the heat release rate from combustion pressure traces of a hydrogen fuelled spark ignited engine. Unlike a gasoline spark ignited (SI) engine, the hydrogen fuelled engine can easily generate knock during combustion at working conditions similar to a gasoline engine. However, the hydrogen knock d...

In this work, the potential of auto-ignition of heavy oil during in-situ combustion (ISC) process was studied. Kinetic studies were carried out using Thermo Gravimetric Analyzer (TGA), Differential Scanning Calorimetry (DSC) and Accelerating Rate Calorimetric (ARC) techniques. Effects of oxygen partial pressure, reservoir pressure and clay on auto ignition condition were investigated on a n...

Due to the recent global increase in fuel prices, reduce emissions from ground transportation and improve urban air quality, it is necessary efficiency emissions. Water, methanol, a mixture of two were added at pre-intercooler position keep same charge cooling original rich mixture, BSFC ITE, promote combustion. The methanol/water mixing volume ratios different injection strategies compared fin...

The paper presents a mixed signal CMOS feedforward neural-network chip with on-chip error-reduction hardware for real-time adaptation. The chip has compact on-chip weighs capable of high-speed parallel learning; the implemented learning algorithm is a genetic random search algorithm: the random weight change (RWC) algorithm. The algorithm does not require a known desired neural network output f...