Abstract: There is provided a horizontally and vertically extendable building structure module that includes a panel, a structural frame and one or more beams. The panel may be designed to form or set into a floor, ceiling, wall, window, door or any other components that may cover surface of the building. The structural frame may be designed to provide the structural shape and strength and hold the panels. The beams may be designed to connect and align the structural frame. The horizontally and vertically extendable building structure module is configured to build a building structure without additional structural support. Because of the minimized number of components for the building structure, time and cost for building construction may be reduced.

Abstract: A treatment apparatus for at least partially disinfecting a fluid such as water comprises a pipe (16) for conveying a flow of fluid to be treated, a series of ultraviolet (UV) light emitting diodes (LEDs) (62) for emission of the UV light into the fluid, and a control circuit (70) for controlling operation of the LEDs. The control circuit is configured for pulsing the LEDs and the LEDs are arranged such that the fluid flows over a surface of each LED, as it is conveyed by the pipe in operation.