PCB

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biphenyl

 [bi-fen´il]
polybrominated biphenyl (PBB) any of various brominated derivatives of biphenyl; uses and toxic hazards are similar to those of polychlorinated biphenyls. They typically are deposited in body fat stores and are rarely mobilized except through lactation.
polychlorinated biphenyl (PCB) any of various chlorinated derivatives of biphenyl, toxic and carcinogenic nonbiodegradable compounds used as heat-transfer agents and electrical insulators; they are readily absorbed from the gastrointestinal tract, and those with a lower percentage of chlorine are associated with a higher toxicity but are more readily excreted.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

PCB

Abbreviation for polychlorinated biphenyl.
Farlex Partner Medical Dictionary © Farlex 2012

PCB

(pē′sē-bē′)
n.
Any of a family of industrial compounds produced by chlorination of biphenyl, used as insulating materials in electrical equipment, including transformers and capacitors, and in various other industrial applications. PCBs were banned in the United States in 1979 and now are noted primarily as environmental pollutants that accumulate in animal tissue with resultant pathogenic and teratogenic effects.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
These typical methods include the traditional fuzzy logic based algorithm with the input of Time to Collision (TTC) and Time Gap (TG) based collision avoidance system in [10] and the commonly used V2V distance-based collision avoidance algorithm in [8].
Consequently, resulting in the commencing of collision avoidance systems, assuring improved safety compared to other driver assistance, passive safety, and active safety systems.
Some planes also have collision avoidance systems fitted, but the equipment on the Tucano plane being used by the trainee pilot did not work in this case, probably because of the terrain in the area.
offers two collision avoidance systems for overhead cranes: UltraGuard and LCAS (Laser Collision Avoidance System shown in photo).
The most useful pieces of equipment we had on board were our traffic alert and collision avoidance system (TCAS) and forward-looking infrared sensor (FLIR).
A cockpit collision avoidance system alerted the Virgin pilot to the danger.
Go said the onboard Traffic Collision Avoidance System was activated when the two jets were 10 miles apart.
The head of the Swiss Air Accident Investigation Bureau said he didn't know what rules Russian pilots have to follow in the case of a conflict between instructions from air traffic controllers and the plane's own collision avoidance system.
Rockwell Collins participated in the evaluation and flew its Sabreliner test aircraft equipped with a modified transponder to transmit ADS-B signals in the 1090 MHz band and a modified traffic alert collision avoidance system (TCAS) to receive ADS-B signals in the 1090 MHz band from other aircraft.
She added that the aircraft was grounded in Hong Kong while checks to the on-board Traffic Collision Avoidance System were carried out and the device was found to have been functioning correctly.
The T3CAS is a Line Replaceable Unit (LRU) that can host any combination of Traffic Alert and Collision Avoidance System (TCAS), Terrain Awareness Warning System (TAWS) and Mode S Transponder with ADS-B In/Out capability.

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