Methods and systems of offering and distributing digital content to an attendee at an event are described. The adsorber bypass evaluation module may evaluate a bypass closing criterion of a hydrocarbon adsorber bypass passage in an engine exhaust gas treatment device after an engine key-on condition. Accelerated MR data is acquired from each of the plurality of RF source coils. The lattice-patterned radiation-imageable layer is utilized as a mask while subjecting the material under the lattice-patterned layer to an etch which transfers the lattice pattern into the material. A free end of the contact portion is connected with a free first end of a spring member and a second end of the spring member is connected to the contact plate.