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activity
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activity

In physics, number of particles emitted in one second by a radioactive source. The term is used to describe the radioactivity or the potential danger of that source. The unit of activity is the becquerel (Bq), named after the French physicist Henri Becquerel, who discovered radioactivity.



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On the other hand, the activity coefficients of water vapor and toluene vapor in TEG solution can be determined from the reported semi-empirical relationships by Parish et al.
These methods attempt to characterize polymer-solvent interactions by using activity coefficients [7], acid-base parameters [8], interaction parameters [9], polarity indices [10], and others.
11] have shown that experimental activity coefficients of uni-univalent strong electrolytes up to 1 m can be expressed with high accuracy by an equation of the form log [[gamma].
 
 
 
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