Numerical Study of Ignition and Combustion of Hydrogen-Enriched Methane in a Sequential Combustor.

Unlabelled: Ignition and combustion behavior in the second stage of a sequential combustor are investigated numerically at atmospheric pressure for pure fueling and for two - fuel blends in 24:1 and 49:1 mass ratios , respectively, using Large Eddy Simulation (LES). Pure fueling results in a turbulent propagating flame anchored by the hot gas recirculation zones developed near the inlet of the sequential combustion chamber. As the content increases, the combustion process changes drastically, with multiple auto-ignition kernels produced upstream of the main flame brush.

"Spiceophrenia": a systematic overview of "spice"-related psychopathological issues and a case report.

Objectives: The use of synthetic cannabimimetics (SC; "spice" drugs) is increasing, especially among teenagers and young adults. In parallel with this, the number of studies describing intoxication episodes associated with psychotic symptoms in SC users is growing. We present both a systematic review of the related literature and a case report, which seems to highlight the existence of a possible association between SC use and psychosis.