A trip-free manual reset thermostat includes a first fixed contact and a second fixed contact for a normally closed circuit and a bridging contact for connecting the first and the second fixed contacts in a normally closed position. A plurality of first protrusions and second protrusions are formed on the connecting surface. The gutter is configured to receive clippings from the animal. Antibody diffusivities can be decreased with increasing hydrogel nanofiber density, providing a means to control the release kinetics. The second signal path may be used to convey higher frequencies, and may be implemented, at least in part, using a waveguide. The method includes emitting X-rays from a dual energy X-ray source through an area of a patient’s body sought to be imaged and receiving X-rays with a flat panel detector.