Volatile external events

The first component of the model is the rolling fulcrum described by Miller and Strickler (1). External stimuli include such things as pH of plant tissues perceived by an insect seeking the phloem, as well as factors closer to the surface, such as volatiles or cutlcular waxes. Having accepted the plant (we recognize that this is not as clear-cut an event as the model would... 

In the event of fallout from a nuclear incident there is a significant release of radionuclides that are sufficiently volatile to be dispersed, and these include radionuclides of iodine The most important of these firom the point of view of subsequent irradiation of the thyroid is l, although others may so be released in sufficient abundance to be important in special circumstances. However their physical properties are such that they are generally less important than 1, especially at a distance, and hence they will not be treated here Their impact is assumed to be included with the generalized external irradiadon associated with the inidal release, or to be otherwise relatively minor. 

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