One of these isomers displays a helical twist and is therefore prochiral.

GHT, turby and quietrevolution solved pulsatory torque issues by using the helical twist of the blades.

Later designs solved the torque issue by using the helical twist of the blades almost similar to Gorlov's water turbines.

For each additional helical twist being accommodated, the lobes will show one more rotation about their axis.

Extra helical twists are positive and lead to positive supercoiling, while subtractive twisting causes negative supercoiling.

A neutral dinucleotide with Watson-Crick base pairing and a right handed helical twist.

The three vertical aerofoil blades have a helical twist of 60 degrees, similar to Gorlov's water turbines .

The turbine consists of three vertical symmetrical airfoil blades, each having a helical twist.

Another advantage of the helical twist is that the blades generate torque well from upward-slanting airflow.

Sometimes the crystals have a curious helical twist about the tetrad or principal axis.