A blue light emitting compound and an organic electroluminescent device using the same are provided. More particularly, an application presented by the device in a dual portrait orientation can utilize the first screen to display control information, and can utilize the second screen to display content information. The mounting plates support a framework for mounting spaced rotatable members, as shown members that mount a drive track for propelling and supporting the body. The trench us filled with an insulating material to form a device isolation stripe. The size of the quick-adjustable animal collar changes with adjusting the first length of the at least one strap, with the first length of the at least one strap including an increased extent disposed within a circumference of the quick-adjustable animal collar as the size of the quick-adjustable animal collar is reduced. Thus there is provided a novel method and system which optimizes overall MSS and ATC traffic.