Pneumatic motor from the expansion of the gas. These days, using the patent pending 'K'Air Generator', converted to work as a compressed-gas motor, the project should be launched in 2010, thanks to a North American group of investors, but for the purpose of developing first a green energy power system. In the original Nègre air engine, one piston compresses air from the atmosphere to mix with the stored compressed air (which will cool drastically as it expands). This mixture drives the second piston, providing the actual engine power. MDI's engine works with constant torque, and the only way to change the torque
Potential energy of protein apart. The potential energy contribution of this interaction is defined over S, set of atoms with van der Waals interaction, as: E = Σ ε [ (σ/r) - 2(σ/r)] where: r distance between atoms σ distance at Van der Waals energy is minimum Potential energy of protein Internal potential energy of a molecule in molecular mechanics is described by a system of functions known as forced field. The potential energy usually includes several terms: E = E+ E+ E + E +E When two atoms are connected by a chemical bond, they tend to maintain a fixed distance. The fixed