Abstract: The cleaning composition of this invention comprises, as effective components, a compound (A) represented by the formula (1) and a nonionic surfactant (B): wherein R1 represents a hydrogen atom or a straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms and R2 represents a hydrogen atom or a straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms. The cleaning composition of the invention is excellent in detergency and is satisfactory in respect of environmental protection properties, odor and flammability. An article to be cleaned can be cleaned by coming into contact with this cleaning composition.

Abstract: The cleaning composition of this invention comprises, as effective components, a compound (A) represented by the formula (1) and a nonionic surfactant (B): 1

Abstract: One technique of a congestion control method for packet switching apparatuses, in which a plurality of priority data indicative of different demands, such as a first priority data indicative of immediateness priority and a second priority data indicative of necessity priority, are attached to each packet. In congestion of a packet queue, such control is carried out that such a packet as having the high first immediateness priority is rearranged as located in the front part of the queue while such a packet as having the high first immediateness priority but having the low second necessity priority is first discarded according to the first and second priority data of the packets, whereby major demands for the each packet are concurrently satisfied.