A condition marked by recurrent attacks of difficult or laboured breathing and wheezing resulting from spasmodic contraction and hyper secretion of the bronchi resulting from exposure to allergens such as drugs, foods or environmental pollutants or pollen.
A respirator that supplies the respirator user with breathing air from an independent source
Individual component of a molecule.
A room or space directly below the roof of a building. In modern buildings, the attic is the space between the roof and the ceiling of the upper story.
Permission to perform some action, provided by an individual empowered to grant it.
Indicates that replacement material will be provided as available; exact matching is not assured.
(AMC) – The average of the amounts of moisture in a specific material in the built environment(such as a plywood sub floor) measured at several depths and points across a grid.
Any of a group of straight, cylindrical or rod-shaped aerobic bacteria.
Pressure against the flow of liquids or air due to various imposed constrictions; e.g., air pressure working against a fan (air mover) within an air stream that is being compressed, as under a carpet or in an interstitial cavity during drying.
Adhesive applied to the back side of woven goods. The back coat serves to add strength and stability to the weave, while increasing its stiffness (_hand,_ or feel).