The best drones we've tested can elevate the production quality of your film projects, capture stunning perspectives for your travel vlogs, and, of course, are simply fun to fly. Images, and the ...

Abstract: The new Electronic ballast as a starting element has replaced the conservative ballast system of fluorescent lamps. These highly efficient electronic ballasts are preferred over conventional ...

Abstract: Ultraviolet C (UVC) has the potential for use in sewage treatment. However, the short effective lifetime and poor lamp efficiency of UV lamps limit the utility and extension of UVC in sewage ...

Some forms cannot be viewed in a web browser's PDF viewer and must be opened in the Adobe Reader application on your desktop system. Click here for instructions on opening this form. To provide ...