A center beam railroad freight car including a cover for the lateral surfaces of the top chord of the center beam to reduce cargo damage. First and second fluid storage containers are coupled to the manifold. 1 to 4% of the volume of space in the bearing. The base stations receive the requests from each access terminal and select an access terminal to communicate during a subsequent time slot based on, among other things, the channel conditions and weighted average functions of the communication rate corresponding to the access terminal. The process enables industrially advantageous production of intermediates for the synthesis of optically active 2,3-dihydrobenzofuran compounds useful as preventive andor therapeutic drugs for neurodegenerative diseases and so on. Attached to structures of the lower ring is a sterile platform for reposing temporarily removed tissues during the administration of laser pulses to other tissues.