If verified as a valid alternative, this new propellant could be used not only in spacecraft, but also in military vehicles that operate on hydrazine, said Roger Myers, executive director of Aerojet Rocketdyne, a partner in the program.
In contrast to the instinctual id and the moral superego, the ego is the rational, pragmatic part of our personality. It is less primitive than the id and is partly conscious and partly unconscious.
porÂ·trayÂ·al. n. 1. The act or process of portraying someone or something: his brilliant portrayal of the leading role.2. A representation or description: a detailed portrayal of living conditions.. description, account, representation an often funny portrayal of a friendship between two boys. 4. characterization, representation, depiction The media persists in its portrayal of us as muggers and dope sellers.