A multi-layer, microporous polyethylene membrane having at least two layers, which comprises a microporous polyethylene resin layer A comprising high-density polyethylene A having 0. The vibration element and semiconductor integrated circuit chip are arranged to be overlapped with each other viewed in a direction of the rotation axis and are arranged substantially in parallel with each other in planes which are substantially perpendicular to the rotation axis. A thin-client server-controlled architecture enables users of resource-constrained mobile communications devices to locate targeted information more quickly by entering fewer keystrokes and performing fewer query iterations and web page refreshes, which in turn reduces required network bandwidth. The linefeed driver drives the subscriber loop in accordance with the linefeed driver control signals. First ear portions extend outward from both side walls. The radial flow distribution along the central axis can be tailored by the configuration of the central passageway.