Technology is disclosed for accessing data fragments of data objects. The temperature change can thus be based on the frequency change and the characteristics of the source ), including the temperature coefficient of the source. The model may be used to provide a caliper measurement where acoustic caliper data are unreliable. Each vertical boss has bearings, and each pivoting case is attached to the bearings to be pivotable relative to the vertical boss. An electronic delivery system transmits the digital representation in the desired format to the destination independently of the telephone call. The compositions of the present invention have the advantage of increased stability, a reduction of arachidonic acid in cells, a reduction in eicosanoid production and enhanced cell regulation and communication.