A Mrs. Kristy L. France, Cardiology (Cardiovascular Disease), answered on behalf of Honor Society of Nursing (STTI). The blood type of a child depends on the blood type of the parents. Each parent/person has two genes that make up the blood type. Depending on which combination each parent has determines the different combinations that the child can have.
The use of bands and chains are mentioned on the Powerlift Assistance Exercises pages. This page will describe their use. The use of bands and chains are especially recommended for those who compete using squat and deadlifts suits and a bench shirt. The bands and chains mimic the effects that the gear gives and provide extra work for the top part of each lift.
Sidebands are spectral components that are the result of amplitude or frequency modulation. The frequency spacing of the sidebands is equal to the modulating frequency, and this fact is used in diagnosing machine problems by examining sideband families in the vibration spectrum. For instance, a defective gear will exhibit sidebands at the gear rpm around the gear mesh frequency.