Estrogen Curbs Appetite In Same Way As The Hormone Leptin. FULL STORY. Estrogen regulates the brain's energy metabolism in the same way as the hormone leptin, leading the way to a viable approach to tackling obesity in people resistant to leptin, researchers at Yale School of Medicine report in the December 31 online issue of Nature Medicine.
1. smokeless powder-an explosive (trade name Ballistite) that burns with relatively little smoke; contains pyrocellulose and is used as a propellant. Ballistite. explosive-a chemical substance that undergoes a rapid chemical change (with the production of gas) on being heated or struck.
Oxygen from the air is not necessary for the combustion of smokeless powders since they contain sufficient built-in oxygen to burn completely, even in an enclosed space such as the chamber of a firearm. In effect, ignition occurs when the powder granules are heated above their ignition temperature.