Design of the intelligent protection and measurment installations of the non-electric mete protection of the electric power transformer based on C8051F041;

Ihe method is reported that the embedded real time operation system is used in the MCU C8051F041 based on soc configuration ,and the proportion control method with PID contol method is also used in the system, therefore, the fast responsibility of the system is improved ,and the dependability and the ability of real time of the system is advance

Recent progress of separation of xylene isomers and ethylbenzene from C_8 aromatic hydrocarbon is expounded with emphasis on technical features of adsorptive separation technologies and their industrial applications.

70%,and an average C 8 olefins selectivity of 75.