Ex nihilo is a Latin phrase meaning out of nothing,â which often appears in conjunction with the concept of creation, as in creatio ex nihilo, meaning creation out of nothing.â Not only do scientists think the Universe was created out of nothing, or that nothing existed before the singularity, but even Creationists, those who believe God created ...
There are two main categories of diaphragm valves: one type seals over a weir (saddle) and the other (sometimes called a full bore or straight-way valve) seals over a seat.
What is Diaphragm Function and Definition. Diaphragm-the thin, flat MUSCLE that forms the floor of the thoracic cavity (chest) , establishing a physical barrier between the thoracic cavity and the abdominal cavity.Small openings in the diaphragm allow structures such as the AORTA, inferior VENA CAVA, and ESOPHAGUS to pass through.ontraction of the diaphragm tightens this dome, pulling it downward to expand the thoracic cavity. The diaphragm has two equal halves, each called a hemidiaphragm, and is the primary muscle of BREATHING.