An electronic load simulation circuit includes a current detection resistor for connection with positive and negative terminals of a power source device to be tested. The fluid composition includes a mixture of poly-functional compounds, a colorant compound, a photo-initiator and less than about 50 weight percent water based on a total weight of the fluid composition, wherein the fluid composition is substantially devoid of volatile organic carrier fluids. Interfaces may include mechanical interfaces, such as liquid cooling interfaces and other suitable interfaces. Generating an intermediate value for the each element in the data set using summed values for the data keys. A method for remote control of down-hole operation control elements in an oil andor a gas well completion. 0*106 gmol, and 15 to 5 Vol-% of glass particles having a spherical or oval shape distributed within said Polyethylene basis material, such that the surface of said scraper gate andor said liner comprising rounded surface portions formed by such glass particles constitutes a hard slide face for the flowable viscous materials to be pumped.