An arrangement for a direct methanol fuel cell includes a fuel cartridge that supplies a source of fuel to the direct methanol fuel cell. The biological signals from skin temperature, a photoplenthysmogram, an electrocardiogram, electrodermal activity, an electromyogram, and an electrogastrogram are detected using a biological signal detection unit which is attached to the animal’s skin. This \u201cleaky\u201d effect can be used in conjunction with a reflector sheet in a tapered-waveguide arrangement to construct a lightweight backlight. The optic fiber may be disposed within an inner bore of the handle, the optic fiber sleeve, the actuation structure, and the housing tube. Blanking intervals are much more frequent than explicit synchronization symbols, thus an invention enabled device can greatly improve synchronization times, and eliminate e. The network is designed to facilitate high-bit-rate data communication within a home, office, or similarly constrained area.