To study biological activities of Duck Interferon Alpha (DuIFN-α) and prepare antivirus medicine, the eukaryotic expression vector of mature polypeptide of Duc
An experiment was conducted to study the influence of early quantitative feed restriction on the performance and carcass characteristics of broiler chickens. Tw
Sludge bulking property of membrane bio-reactor was investigated in this study through contrast research. When the sludge bulking appeared, the removal efficien
A detailed research in soil improving measure was conducted during the process of plants that were cultivated in Tianjin saline and alkaline area. The results s