Gelled propellants are improved propellants that can be considered as the final extension of liquid propellants. High specific impulse, good density and safety better than that of both solid and liquid propellants are advantages of the gel propellants. They are made by addition a suitable gellant to liquid propellants. In this research, nano Al particles have been used in UDMH gel fuel. The gel...

The global pollution of environment urges the screening effective natural protectors for correc-tion toxic and genotoxic action xenobiotics. Medicinal herbs contain a complex biologically ac-tive compounds that are potential sources such protective agent. In current study mutagenic antimutagenic activity alcoholic extracts peppermint (Mentha piperita L.) thyme (Thymus vulgaris L.), family Lamia...

Nanopore silicalite type membranes were prepared on the outer surface of a porous-mullite tube by in situ liquid phase hydrothermal synthesis. The hydrothermal crystallization was carried out under an autogenously pressure, at a static condition and temperature of 180 °C with tetrapropylammonium bromide (TPABr) as a template agent. The molar composition of the starting gel of silicalite zeolite...