A small number of RBCs are normally present in urine and usually result in a negative chemical test. An increased amount of hemoglobin and/or increased number of RBCs are detected as a positive chemical test result.
gigahertz. n, pl-hertz. 1. (Units) a unit of frequency equal to 10 9 hertz. Symbol: GHz.
The terahertz, abbreviated THz, is a unit of electromagnetic (EM) wave frequency equal to one trillion hertz (10 12 Hz).The terahertz is used as an indicator of the frequency of infrared (IR), visible, and ultraviolet (UV) radiation.Download this Pocket Guide to Network Management and Monitoring.he terahertz is not commonly used in computer and wireless technology, although it is possible that a microprocessor with a clock speed of 1 THz might someday be developed.