An intermediate in the combustion of carbon and hydrocarbons, carbon monoxide, is of special importance because it is a poisonous gas, but also economically useful for the production of syngas. Solid and heavy liquid fuels also undergo a great number of pyrolysis reactions that give more easily oxidized, gaseous fuels.
GM is short for General Motors. in text means Good Morning or means Good Move. Also means Genetically Modified.
The length of stay for the patients in question are added together and divided by the number of patients. The GMLOS is a little more complicated. Geometric mean is a statistical/mathematical term that is applied in many other areas outside of health care.