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 MCV is calculated by dividing the total number of. packed red blood cells (also known as hematocrit) by. the total number of red blood cells. The resulting. number is then multiplied by 10. The red blood cells. get packed together when they are spun around at. high speeds in a device called a centrifuge.