A parallel hardware-based multithreaded processor is described. The reinforced composite structural element can be used as a railroad tie and for other construction uses. The molar fractions x, y and z, the dopant species and the dopant concentration may be varied to tune the peak emission wavelength andor the width of the emission peak. The first face is in contact with the first face of the dielectric member, such that the recess and the dielectric member define channels in cooperation with the dielectric plate. The method comprises culturing blood cells from a patient suffering from cancer in the presence of a cytokine stimulating factor, where after the amount of induced cytokine thereby produced is determined giving an indication of the risk of recurrence of the cancer. In a retracted configuration, the drive link rotates the blade link to cause the fan blade to pivot and retract.