Your intake manifold. It takes in air and sends it to your engine's combustion chamber. This is basically the start of the combustion process. After all, you can't have combustion without air.

We studied the Bishop score, cervical length and parity in 196 pregnant women in the prediction of successful vaginal delivery within 24 h of induction. Logistic regression and segmentation analysis ...

While variable geometry engine air intakes were banned from Formula 1 in 2006, only to become legal again later on, you can find this technology in many road cars today. Typically, it goes by the term ...