Provided herein is a silk material compositions and methods for encapsulating andor stabilizing oil, lipid, hydrophobic or lipophilic compounds including active agents in a silk matrix. A cable protection and guide device in which a number of link frame bodies are flexibly and sequentially connected to each other such that a connecting pin of a preceding link plate is inserted into a connecting pin hole of the subsequent link plates. The longitudinal strip is a stacked layer comprising a gate dielectric layer, a conductive layer and a cap layer. The fusing apparatus further comprises a pulse width modulation signal generation unit which generates a PWM signal in response to the ON signal so that the amount of induced current input to the fusing unit gradually increases to a reference current.