Barrier

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Barrier

1. See: Trade barrier.

2. See: Barrier Option.
References in periodicals archive ?
Chemical barriers are among the most important factors limiting heavy metal migrations (Karol Reuben 2003; Zinkute 2002).
Name of Method Type of Method Problems/Disadvantages of Use Male condom Physical barrier Oil-based lubricants Allergies Storage Female condom Physical barrier Bulky Requires practice Sponge Physical and Inserted prior to intercourse chemical barrier Allergies Reduced effectiveness after having a child Diaphragm Physical barrier Not used during menstruation Inserting properly May need to be refitted Implant Hormonal Some medications and supplements reduce effect IUD Hormonal Slip out of uterus Slight risk of infection Patch Hormonal Must be replaced when becomes loose or falls off Higher risk of blood clots Some medications and supplements reduce effectiveness Effectiveness reduced if weigh over 198 lbs.
The main interest in termite control is to accomplish complete and continuous chemical barriers wrapped around the walls and footings of the building's foundation, thereby forming a chemical barrier between the structure and the termite nest.

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