Exposure assessment — is a branch of environmental science that focuses on the processes that take place at the interface between the environment containing the contaminant(s) of interest and the organism(s) being considered. These are the final steps in the path to… … Wikipedia
Exposure science — is the study of human contact with chemical, physical, or biological agents occurring in their environments, and advances knowledge of the mechanisms and dynamics of events either causing or preventing adverse health outcomes … Wikipedia
Biological hazard — Biohazard Infection Classification and external resources Biohazard symbol Biohazard redirects here. For other uses, see Biohazard (disambiguation). Biological hazards, refer to biological substances that pose a threat … Wikipedia
Biological pigment — The Blue Morpho butterfly, native to Central America, derives its distinctive blue coloring from iridescence rather than from pigmentation. Biological pigments, also known simply as pigments or biochromes[1] are substances produced by living… … Wikipedia
Biological warfare — For the use of biological agents by terrorists, see bioterrorism. Weapons of mass destruction … Wikipedia
biological weapon — Introduction also called germ weapon any of a number of disease producing agents such as bacteria, viruses (virus), rickettsiae (rickettsia), fungi (fungus), toxins (toxin), or other biological agents that may be utilized as weapons… … Universalium
exposure — Contact made between a chemical, physical, or biological agent and the outer boundary of an organism. Exposure is quantified as the amount of an agent available at the exchange boundaries of the organism (e.g., skin, lungs, gut). (US EPA 2002) … Petroleum refining glossary
biological dosimetry — determination of the level of exposure by measurement of radiation induced changes such as cytogenetic abnormalities, lymphopenia, and agranulocytosis; the dose is estimated by comparison of the measurements under consideration to those observed… … Medical dictionary
Relative biological effectiveness — (RBE) is a health physics concept introduced in the 1950s, after it was noted that different types of radiation might affect living organisms differently. A higher RBE equates with greater biological damage for equivalent radiation exposure.The… … Wikipedia
U.S. Biological Weapon Testing — The United States government performed experiments related to biological warfare on consenting and non consenting military personnel and occasionally civilians, especially during the Cold War. President Richard Nixon decided to officially end the … Wikipedia
Stress (biological) — Stress is a biological term which refers to the consequences of the failure of a human or animal body to respond appropriately to emotional or physical threats to the organism, whether actual or imagined. [ The Stress of Life , Hans Selye, 1956.] … Wikipedia