Fungal nail infections can be caused by three different types of fungus, alone or in combination. 1  Dermatophytes are a type of fungus that can grow on the skin, hair, and nails. 2  They don't invade the deeper tissues of the body. 3  The most common dermatophyte, Trichophyton rubrum, causes most cases of athlete's foot.
Negative Airflow. Negative airflow is the opposite of postive airflow its having more exhaust fans then intake fans, this is good because its always taking new air into the case, but then you have more dust because the intake is mostly coming from gaps in the case and then causing trapped air.
Misapplying a common regulator as a means of flow control. Air flow is the rate that compressed air moves through a particular application. Air pressure is the force over a given area exerted by compressed air in a given application. So flow will directly affect speed whereas pressure will affect force. Often times, our engineers hear about applications where a regulator is the means of flow control.