BACKGROUND AND AIMS Bispectral index (BIS) values may be anaesthetic agent-specific, depending on their ability to suppress the electroencephalogram (EEG) signals. We carried out a prospective, randomised clinical trial to study the effect of nitrous oxide (N2O) on the BIS values at an equi-minimum alveolar concentration (MAC) of sevoflurane and desflurane. METHODS Sixty adult patients underg...

Oxygen carriers used in chemical looping processes operated with biofuel are affected by the inorganic matter of fuel. It is therefore expected that lifetime oxygen carrier limited, and preferably low-cost should be used. based on iron ore or steel manufacturing waste products available significant quantities at low cost. However, it common for these types materials their reactivity low. This s...

Oxygen carrier aided combustion is a process that utilizes oxygen carrying particles in fluidized bed to transport from oxygen-rich oxygen-poor regions the reactor. A commonly used oxygen-carrying material ilmenite (FeTiO3) which naturally occurring mineral. At higher partial pressures can react pseudobrookite (Fe2TiO5) and thereby take up oxygen. Upon reduction of oxygen-lean locations release...

In the epoxidation of ethylene to oxide using chemical looping, Ag is supported on strontium ferrite perovskite, where acts as catalyst while perovskite an oxygen carrier. This study explores how various carriers based affect looping epoxidation. The structure carrier was varied by incorporating different ratios two phases: cubic SrFeO3, and a layered Ruddlesden-Popper (RP) phase: Sr3Fe2O7. Max...

In this work it is analyzed the performance of an iron waste material as oxygen carrier for a chemical-looping combustion (CLC) system. CLC is a novel combustion technology with the benefit of inherent CO2 separation that can be used as a source of energy for the methane steam reforming process (SR). The tail gas from the PSA unit is used as fuel in the CLC system. The oxygen carrier behaviour ...