activity concentration

См. также в других словарях:

• activity concentration — tūrinis aktyvumas statusas T sritis Standartizacija ir metrologija apibrėžtis Bandinio aktyvumo ir jo tūrio dalmuo. Matavimo vienetas – bekerelis kubiniam metrui (Bq/m³), bekerelis litrui (Bq/l). atitikmenys: angl. activity concentration; volumic …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• concentration — con‧cen‧tra‧tion [ˌkɒnsnˈtreɪʆn ǁ ˌkɑːn ] noun [uncountable] ECONOMICS when companies combine to form larger companies, resulting in fewer businesses in an industry; = CONSOLIDATION: • Continental, in a move that underlines the growing… …   Financial and business terms

• Activity — may mean: *action, in general *physical activity * Activity , an alternative name for the game charades * Activity , a task. * Activity , the ability of a piece to influence the game in chess * Activity , the rate of a catalytic reaction, such as …   Wikipedia

• Activity centre — is a term used in urban planning and design for a mixed use urban area where there is a concentration of commercial and other land uses. For example, the central business districts of cities (CBD) are also known as central actvities districts… …   Wikipedia

• concentration of industry — concenˌtration of ˈindustry noun [uncountable] ECONOMICS when a lot of industrial activity is found in one place: • In Scotch whisky, the greatest concentration of industry is along the River Spey …   Financial and business terms

• activity — [ak tiv′ə tē] n. pl. activities 1. the quality or state of being active; action 2. energetic action; liveliness; alertness 3. a normal function of the body or mind 4. an active force 5. any specific action or pursuit [recreational activities] …   English World dictionary

• concentration — 1630s, action of bringing to a center, noun of action from verb CONCENTRATE (Cf. concentrate) (q.v.). Meaning a mass so collected is from 1670s; continuous focus of mental activity is from 1846 …   Etymology dictionary

• Activity (chemistry) — In chemical thermodynamics, activity (symbol a) is a measure of the “effective concentration” of a species in a mixture, meaning that the species chemical potential depends on the activity of a real solution in the same way that it would depend… …   Wikipedia

• Activity coefficient — An activity coefficient [ [http://www.iupac.org/goldbook/A00116.pdf Gold Book definition] ] is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture the… …   Wikipedia

• activity coefficient — Number expressing the ratio of a substance s chemical activity to its molar concentration (see mole). The measured concentration of a substance may not be an accurate indicator of its chemical effectiveness as represented by the equation for a… …   Universalium

• activity — 1. In electroencephalography, the presence of neurogenic electrical energy. 2. In physical chemistry, an ideal concentration for which the law of mass action will apply perfectly; the ratio of the a. to the true concentr …   Medical dictionary