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The article presents a study on the use of Annexin A2 and heat shock protein 27 (HSP27) in reducing porcine reproductive and respiratory syndrome virus (PRRSV) infection.

The article discusses a study on the purification and identification of Brucella abortus 544A O chain-A antigen using heat-phenol, agarose immunodiffusion (AGID) and sodium dodycyl sulfate polycrylamide gel electrophoresis (SDS-PAGE) and preparation of the strain specific monoclonal antibodies (McAbs).

The fly ash sample was characterized by size fraction, X-ray diffraction, contact angle measurements and X-ray fluorescence. The function of a new type of frother (KD) which can produce more stable foam than conventional frothers was studied. The effect of the column flotation operating variables on the removal of unburned carbon from the fly ash was also systematically examined. Within the range studied, the optimum frother dosage is 400 g/t, superficial gas velocity is 1. 8 cm/s, froth thickness is about 150-200 mm and circulating pressure is 0. 22 MPa. The results indicate that Cyclonic-Static Micro-bubble Flotation Column (FCSMC ) technique is effective in removing the unburned carbon from coal fly ash. Under the optimized conditions, a cleaning ash with 3. 15% LOI (Loss on Ignition) and 91. 88% RUC(Removal Rate of Unburned Carbon) is obtained. [ABSTRACT FROM AUTHOR]