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.
Sociography is writing on society, societal sub-divisions and societal patterns, done without first conducting the in-depth study typically required in the academic field of sociology. The term was coined by the Dutch sociologist Sebald Rudolf Steinmetz in 1913.