Light-emitting elements such as LEDs are associated with light-converting material such as phosphor andor other material. Embodiments provide a syringe device including a reservoir having a sidewall. At least one of the surfaces of particles of the iron powder and the surfaces of the sintered core is insulated. Moreover, a mechanism on a receiver side can detect frame that will be rendered with artifacts if displayed due to previous frame loss; this mechanism can leverage receiver side knowledge concerning the dependency structure of the frames. By changing the amount of flexion in the legs of the pin, the pressure required to insert the pin into, and remove the pin from, a connection hole can be varied.