diaphragmatic. pertaining to a diaphragm. diaphragmatic hernia protrusion of some of the contents of the abdomen through an opening in the diaphragm and into the chest cavity.The condition may be congenital or acquired. Congenital diaphragmatic hernia in newborns is due to failure of the embryonic diaphragm to fuse.The opening in the diaphragm can be large enough to permit filling of the thoracic cavity with abdominal contents, thus interfering with normal expansion of the lungs.he condition may be congenital or acquired. Congenital diaphragmatic hernia in newborns is due to failure of the embryonic diaphragm to fuse. The opening in the diaphragm can be large enough to permit filling of the thoracic cavity with abdominal contents, thus interfering with normal expansion of the lungs.
1. Unvented space heaters are more efficient than vented space heaters, because none of the heat output goes up the flue. All of the heat output (as well as the combustion gases) stay in your living room. 2. The gains in efficiency are not worth the risks to your health.
A convection heater is  a heater which operates by air convection currents circulating through the body of the appliance, and across its heating element. This heats up the air, causing it to increase in volume and so become buoyant and rise. Oil heaters are an example of this kind of heating appliance.