neutralization index
1.The automatic controlling systems of syrup, brix in the evaporation and pH valves inside the neutralization tube in sugar plants which can be solved by using pressure difference as indirect index of syrup brix,combining with the liquid level regulation of every evaporation pan are introduced.
2.According to antibody titre of virus serum cross neutralization,antigenic Relatedness values(R) between IPV ZJ 971 isolate and infectious bronchitis virus M 41 ,T,Gray,Holte strains were respectively 0 0013,0 0006,0 0005,0 0003 Chickens infected artificially with IPV ZJ 971 isolate showed stunt,thymus atrophy,increase of proventriculus index(PRIX) and proventriculus gizard index(PGIX),and decrease of bursa body index(BBIX).
