Abstract: A sewer cleaning machine includes a frame, a drum rotatably supported by the frame, and a motor supported by the frame and coupled to the drum. The drum includes a cable that is selectively extendable out of the drum. The motor is operable to rotate the drum. The drum is configured to engage a surface to facilitate moving the sewer cleaning machine along the surface.

Abstract: The present disclosure relates generally to ceiling panels, for example, suitable for use forming a ceiling surface. The present disclosure relates more particularly to a ceiling panel including a panel body and a bracket. The panel body includes an upper surface, a lower surface, a first end, a second end, a first lateral side, and a second lateral side. The bracket extends upward from the upper surface of the panel body and is offset from a center of gravity of the panel body toward the first end. The bracket includes an upper fastener configured to attach the ceiling panel to a frame element of a ceiling grid. An angle of the panel body is adjustable with respect to the attachment of the upper fastener of the bracket.

Abstract: A process for metallizing a three-dimensional-printed polymeric structure includes soaking the three-dimensional-printed polymeric structure in a metal salt solution; transferring the three-dimensional polymeric structure to a solution comprising a first reducing agent; soaking the three-dimensional polymeric structure in a metal plating bath, the metal plating bath comprising a coordinating agent, a palladium or platinum salt, a pH buffer component, and a second reducing agent, to form a metal plated polymeric structure. A metal plated porous structure and an apparatus for improving metallization are also disclosed.

Abstract: A system and a method for determining a position of a single phase fault to ground in a feeder line are provided. The feeder line is electrically connected to an electrical substation via a substation bus. The system includes first and second sensors electrically coupled to a transformer in the electrical substation. The system further includes a processor that determines a reactance value based on measured electrical characteristics and a predetermined constant. The processor accesses a table having a plurality of position identifiers associated with positions on the feeder line, and a plurality of reactance component values corresponding to positions on the feeder line relative to the substation bus. The processor selects a first reactance component value from the plurality of reactance component values in the table to determine the position of a fault.

Abstract: A system and a method for determining a position of a single phase fault to ground in a feeder line are provided. The feeder line is electrically connected to an electrical substation via a substation bus. The system includes first and second sensors electrically coupled to a transformer in the electrical substation. The first sensor measures an amplitude and a phase angle of an electrical current being output by the transformer to the substation bus electrically connected to the feeder line. The second sensor measures an amplitude and a phase angle of a voltage being output by the transformer to the substation bus electrically connected to the feeder line. The system further includes a processor that determines a reactance value based on the amplitude of the electrical current, the amplitude of the voltage, a phase angle between the electrical current and the voltage, and a predetermined constant.