Magnetic air cars uses air compression as the source for propusion. It is "magnetic" in the sense that a magnetic motor is used for the air compression.
If memory serve then the letters 'jp' stand for Jet Propusion. As different jets use different standards of fuel then tracking down which airlines or airforces use JP54 will prove difficult due to a lack of information on that subject
1- Motility : it include movement which responsible for mixing and propusion 2- Secretion : it include exocrine and endocrine 3-Digestion : bleaking down macromolecules into micromolecules 4-Absorbtion : transfer nutrients from lumen to circulation 5- Excretion : excretion of undigested food and nonabsorbed product
The blood flows through arteries because of the pressure generated by the heart and maintained by the action of the arterial muscles. Conversely, while veins also have a muscle, called the Tunica Media (the inner middle layer of the vein), aiding in propulsion of the blood flow through the heart, they must rely on internal valves to aid in propelling blood through them. Veins are a closed system, so they do not have the benefit of the pressure of the heart in propelling blood through them. The valves in veins assist in propusion of the blood through them and prevention of blood clots.