Some statutory definitions include the threatened use, release or placement of other harmful agents, such as poisons, biological pathogens, radioactive materials, or even a dangerous weapon (e.g., aboard an airliner).

At the outset of World War II, the United States moved to protect its food supply from biological pathogens by setting up an extensive surveillance program.

Bio-Surveillance to develop the necessary information technologies and resulting prototype capable of detecting the covert release of a biological pathogen automatically, and significantly earlier than traditional approaches.

A principle is that assessing the technical threat of biological pathogens is essential to inform and help develop biodefense policy.

They have successfully manipulated the sensors so that they are sensitive to exposure of certain dangers, such as explosive materials or biological pathogens.

Scientists tested biological pathogens, including Bacillus globigii, which were thought to be harmless, at public places such as subways.

This runoff contains most of the debris, garbage, chemical pollutants, and biological pathogens that are washed into storm drains in every upstream city each time it rains.

Both incidents, he explains, involved the transmission and replication of information - a biological pathogen in one case, ideas coded in patterned ink in another.

Similar types of enhancement can occur for fiber and nanofabricated ring-resonator systems, with important applications in photonic switching and sensing of biological pathogens.

Researchers apply advances in nanoscience to develop novel technologies for the detection, identification, and characterization of harmful biological pathogens (viruses, spores, and bacteria) and chemical toxins.