Direct emissions are produced from residential and commercial activities in a variety of ways: 1  Combustion of natural gas and petroleum products for heating and cooking needs emits carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).
Of red blood cell number. Classically this was the packed cell volume. blood was placed in a microtube and spun in a centrifuge. The rbcs settle to the bottom and one measures the height in the tube and reported as a percentage. Now determined by an automated machine. A typical hct is about 3 x the hemoglobin (hgb).
The Mean corpuscular hemoglobin concentration, a measure of the concentration of haemoglobin in a given volume of packed red blood cells. It is reported as part of a standard complete blood count. It is calculated by dividing the haemoglobin by the haematocrit.