Abstract: In method for freeze-crushing waste resources, freezing gas is first created by collecting freezing heat source of liquefied petroleum gas during a heat exchange process between the liquefied petroleum gas and cooling gas, and then the waste resources stored in a freezing tank is frozen to a temperature where the waste resources can be easily crushed by supplying the freezing gas to the freezing tank. Next, the frozen waste resources is crushed in an crushing apparatus, after which the freezing gas is separated from the crushed waste resources in a separate apparatus and the freezing gas for is collected the purpose of reuse.

Abstract: A method and apparatus for controlling a forward direction power ratio in a W-CDMA wireless base station including the steps of: recognizing a variation in number of traffic channels; recognizing a data transfer speed; computing a power ratio of each channel according to the number of traffic channels and the data transfer speed; and re-adjusting an existing power ratio according to the computed power ratio of each channel.

Abstract: A sulfate ester of N-acetylneuraminic acid homopolymer represented by the formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein R represents H or SO.sub.3 H, n is 5-1,000, wherein the number of SO.sub.3 H residues per 1 molecule of N-acetylneuraminic acid residues is 0.1 to 3.0, which sulfate ester demonstrates anti-HIV activity.