The present invention discloses water leakage detecting system for liquid pipe and method thereof. The honeycomb units include at least: ceramic particles; and at least one of inorganic fibers and whiskers. Also provided are ACE inhibitory peptides Val-Ser-Val and Phe-Leu. In addition, the invention may also generate one or more displays of the determined forecast factor to a user and may also receive a user input for selecting andor modifying the protocol used to determine the forecast factor. Furthermore, a compressor which is insensitive to pumping and flow separations, as viewed in rotation direction, the bleed position of each return flow passage lies upstream of the corresponding feed position. Physical separation among the multiple paths and impedance matching provides isolation among the multiple paths, and relaxes rejection considerations on the filters.