Moreover, the basal membrane component is expected to generate an additional physical and chemical barrier to axonal extensions.

Silicon nitride is often used as an insulator and chemical barrier in manufacturing ICs.

The central nervous system is protected by major physical and chemical barriers.

The substance injected - called a termiticide - provides a chemical barrier around the structure, which repels termites.

"So you would put a chemical barrier between the colony and the house."

The latter flower types, which have chemical barriers to their own pollen, are referred to as self-sterile or self-incompatible (see also: Plant sexuality).

The microbicide concept involves using a chemical barrier to prevent the virus from getting to or infecting its target cells.

Acts as a physical and chemical barrier to infectious agents.

Any physical or chemical barrier in the soil that restricts root growth will reduce the productivity and survival of tagasaste.

Both physical and chemical barriers can be used to protect a polymer from chemically assisted degradation.