Abstract: There is accordingly provided a rail system selectively connectable to a rifle. The rifle has a loading port for receiving bullets therein. The system includes a first rail positioned forward of the loading port. The system includes a second rail extending substantially parallel to the first rail and positioned rearward of the loading port. The system includes an aperture interposed between the first and second rails. The aperture is positioned to align with the loading port of the rifle. The system includes an elongate side member connecting the rails together.

Abstract: There is accordingly provided a rail system selectively connectable to a rifle. The rifle has a loading port for receiving bullets therein. The system includes a first rail positioned forward of the loading port. The system includes a second rail extending substantially parallel to the first rail and positioned rearward of the loading port. The system includes an aperture interposed between the first and second rails. The aperture is positioned to align with the loading port of the rifle. The system includes an elongate side member connecting the rails together.

Abstract: Methods and apparatuses rapidly and cyclically heating and cooling a fluid sample during PCT testing to reduce the duration for full amplification of target DNA using most PCR procedures. Instead of heating and cooling static target solution in a reaction tube, the target solution reciprocates (alternately flows) back and forth within an elongate, thick-walled, small-bore tube. Sections of the tube are maintained at different temperatures so that an ascending/descending temperature gradient is maintained along the length of the tube. As the target solution flows within and along the tube from section to section, it rapidly achieves thermal equilibrium with the tube at each section, thereby rapidly thermally cycling the target solution.

Abstract: Embodiments of apparatuses, systems, articles, and methods related to a photovoltaic module monitoring system are disclosed. Other embodiments may be described and claimed.

Abstract: Methods, systems, and articles of manufacture to combine mail streams in a binding line are disclosed. An example method is used to create a first book on a production line, where the first book is associated with a first recipient address. The example method is then used to deposit the second book associated with a second recipient address via a book feeder on the first book as the first book moves along the production line.

Abstract: Systems and apparatus for manufacturing books are disclosed. An example modular signature feeder includes a frame having a base configured to enable the modular signature feeder to be removably attached to another modular signature feeder or a signature transfer assembly associated with a signature collation feeder assembly. Removably attaching the modular signature feeder assembly to another modular signature feeder or a signature transfer assembly increases a footprint of the signature collation feeder assembly. A conveyor configured to move signatures and a hopper configured to hold a plurality of signatures are operatively coupled to the frame. A signature feeding device is disposed between the hopper and the conveyor and configured to feed the signatures from the hopper to the conveyor.