Abstract: Provided herein are isolated or synthesized Rhopalosiphum padi virus (RhPV) nucleic acids having promotor activities, and vectors containing the isolated or synthesized RhPV nucleic acids for gene delivery in insect expression systems.

Abstract: A checking and measuring system includes a checking and measuring mechanism, and a strength measuring element; the checking and measuring mechanism includes a rail, a moving rod positioned within the rail, a rotating power source connected to the moving rod, a sliding member movably connected to the moving rod and sliding along the rail, a first testing rod fitted on the sliding member, and a second testing rod fixed next to one end of the rail; the strength measuring element is fitted to the second testing rod; when a person holds both the testing rods with one hand, and holds a container containing a heavy metal pollutant with the other hand, with the index finger touching a piece of metal having the same element, strength of his/her hands will be measured, and the amount of the heavy metal in this person's body will be obtained based on results of measurement.