Dose
'Dose' is a general term applied to the quantity of Ionising Radiation received by a body which the radiation interacts with. Some degree of care is required when using the word 'dose' since it can mean a number of different quantities.
Dose Response Curve
Graphical representation of the relationship between the dose of a stressor and the biological response thereto.
Source: Terms of the Environment ...
Toxic Dose: The dose level at which a substance produces a toxic effect.
dose: Dose is a general term used to express (quantify) how much radiation exposure something (a person or other material) has received.
Dose (for chemicals that are not radioactive)
The amount of a substance to which a person is exposed over some time period. Dose is a measurement of exposure.
dose
(of a substance)
Total amount of a substance administered to, taken up, or absorbed by an organism, organ, or tissue.
[2]
(of radiation) ...
Dose: The amount of exposure undergone at one time.
Dust: An air suspension of particles (aerosol) of any solid material, usually with particle size less than 100 micrometers.
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Dose response
How a biological organism's response to a toxic substance quantitatively shifts as its overall exposure to the substance changes (e.g., a small dose of carbon monoxide may cause drowsiness; a large dose can be fatal.)(1) ...
Dose Equivalent
The product of the absorbed dose from ionising radiation and such factors as account for biological differences due to the type of radiation and its distribution in the body in the body.
Dose Rate ...
Dose-Response Assessment: 1. Estimating the potency of a chemical. 2. In exposure assessment, the process of determining the relationship between the dose of a stressor and a specific biological response. 3.
Dose: A general term used to refer to the effect on a material that is exposed to radiation.
Dose: The amount of a pollutant that is absorbed. A level of exposure which is a function of a pollutant's concentration, the length of time a subject is exposed, and the amount of the pollutant that is absorbed.
dose 1) 2) A general term denoting the quantity of radiation or energy absorbed.
dose-response. A quantitative relationship between the dose
of a chemical and an effect caused by the chemical.
dose-response curve. A graphical presentation of the ...
Dose Equivalent
The product of the absorbed dose in tissue, quality factor, and other modifying factors at the location of interest. The units are mrem.
Dose Rate ...
D dose limits
Definition (english only)
Maximum references laid down in Title IV for the doses resulting from the exposure of workers, ...
Lethal Dose 50: Also referred to as LD50, the dose of a toxicant that will kill 50 percent of test organisms within a designated period of time; the lower the LD 50, the more toxic the compound.
Lethal Dose (LD): amount of a substance required to cause death in an organism.
Loading: amount of a substance entering the environment (soil, water, or air).
Dose Response
How an organism's response to a toxic substance changes as its overall exposure to the substance changes. For example, a small dose of carbon monoxide may cause drowsiness; a large dose can be fatal. ...
Dose Response
Shifts in toxicological responses of an individual (such as alterations in severity) or populations (such as alterations in incidence) that are related to changes in the dose of any given substance.
Dose Response Curve ...
The dose or exposure level below which a significant adverse effect is not expected.
Tillage
Plowing, seedbed preparation, and cultivation practices.
Highest Dose Tested- The highest dose of a chemical or substance tested in a study.
Holding Pond- A pond or reservoir, usually made of earth, built to store polluted runoff.
Absorbed dose (of a substance)-Amount of a substance absorbed into an organism or into organs and tissues of interest. (IUPAC) ...
LD50/Lethal Dose -The dose of a toxicant that will kill 50 percent of the test organisms within a designated period. The lower the LD50 the more toxic the compound.
permissible dose : The dose of a chemical that may be received by an individual without the expectation of a significantly harmful result.
Protected Area or MPA Marine Reserve MARPOL 73/78 Marsh Mass Burn Facility Material Data Safety Sheet or MSDS Material Flow Analysis Materials Recovery Facility (MRF) Mechanical Containment Median Lethal Dose or ...
Measuring toxicity requires a toxicologist to plot data in the form of a dose-response curve. This curve relates the dose of the chemical to the percentage of animals showing the response (death).
In the past, this type of large dose, "point source pollution" was common in certain parts of the country. With new technologies and environmental legislation, this type of destruction no longer takes place.
The numbers are derived from animal studies of the relationship between dose and non-cancer effects. There are two types of acceptable exposure values: one for acute (relatively short-term) and one for chronic (longer-term) exposure.
Preservatives like thimerosal are used to prevent infection in the event that a dose is accidentally contaminated. Due to recent heightened concerns over the potential effects of mercury on child brain development, though, most vaccines for U.S.
Treatment options for acute, traumatic non-penetrating spinal cord injuries include the administration of a high dose of an anti-inflammatory agent, methylprednisolone
Methylprednisolone ...
Half-Life is the time required for a pollutant to lose one-half of its original concentration, or the time required for half of the atoms of a radioactive element to decay or the time required for the elimination of half a total dose from the ...
 See also: Exposure, Environment, Water, Environmental, Risk
  
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