A method, computer-readable storage medium, reception apparatus, and information providing apparatus for generating a list of accessible channels. The gap can be divided into a plurality of elements. One embodiment allows droplets of highly concentrated cell-water suspensions to pass from the top surface of the fuel through to the bottom, desulfurizing along the way and removing the sulfur products of the process as well. A storage lock release signal is issued from the first requesting device to the targeted memory when exclusivity of the target data segments is no longer required at the first requesting device. The radiation system includes an extreme ultraviolet source constructed and arranged to generate extreme ultraviolet radiation, a contamination barrier constructed and arranged to trap contamination from the radiation source, and a temperature sensor constructed and arranged to sense a temperature of the contamination barrier. The insulation layer avoids extending between the land and the contact portion.