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Please set your unit preferences using the form below.  The currently selected unit preferences are indicated on the form below.  Please note that if you are not using cookies, preferences must be set each time the database is used.  If you are using cookies, your preferences should be preserved between visits to the database.

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Note:  Setting the reference temperature to 1.0 will cause the three-parameter Arrhenius expression to be displayed as Tn, i.e. the reference temperature will be omitted from the expression.