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Internal block diagram. A mass flow controller (MFC) is a device used to measure and control the flow of liquids and gases. [1] A mass flow controller is designed and calibrated to control a specific type of liquid or gas at a particular range of flow rates.
Airflow, or air flow, is the movement of air. Air behaves in a fluid manner, meaning particles naturally flow from areas of higher pressure to those where the pressure is lower. Atmospheric air pressure is directly related to altitude , temperature , and composition.
Windows and doors are then opened and the concentration of the tracer gas in the space is measured at regular time intervals to determine the decay rate of the tracer gas. The airflow can be deduced by looking at the change in concentration of the tracer gas over time. For further details on this test method, refer to ASTM Standard E741. [7]
Cross-breezes work when two windows are opposite of each other. Cross ventilation is a natural phenomenon where wind, fresh air or a breeze enters upon an opening, such as a window, and flows directly through the space and exits through an opening on the opposite side of the building (where the air pressure is lower).
Sublimation: If the air movement in the tunnel is sufficiently non-turbulent, a particle stream released into the airflow will not break up as the air moves along, but stay together as a sharp thin line. Multiple particle streams released from a grid of many nozzles can provide a dynamic three-dimensional shape of the airflow around a body.
Lange v Australian Broadcasting Corporation [1] is a High Court of Australia case that upheld the existence of an implied freedom of political communication in the Australian Constitution, but found that it did not necessarily provide a defence to a defamation action.
Extracellular substances, such as free mucin, colloid, and ground substance, are also easily stained, and appear metachromatic. Major applications include blood smears , bone marrow aspirates, semen analysis and cytology of various body fluids including urine and cerebrospinal fluid .
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