摘要：This research aimed to enhance the column bioleaching recovery of uranium ore by Acidithiobacillus *** factors were examined for their significance on bioleaching using a Plackett-Burman factorial *** significant variables([Fe2+]initial,pH,aeration rate and inoculation percent)were selected for the optimization *** effect of these variables on uranium bioleaching was studied using a central composite design(CCD).The optimal values of the variables for the maximum uranium bioleaching recovery(90.27±0.98)%were as follows:[Fe2+]initial=2.89g/L,aeration rate420mL/min,pH1.45and inoculation6%(v/v).[Fe2+]initial was found to be the most effective *** maximum uranium recovery from the predicted models was92.01%.This value was in agreement with the actual experimental *** analysis of bioleaching residue of uranium ore under optimum conditions confirmed the formation of K-jarosite on the surface of *** using optimal conditions,uranium bioleaching recovery is increased at column and jarosite precipitation is *** kinetic model showed that uranium recovery has a direct relation with ferric ion concentration.

摘要：The complicated, highly dynamic and diverse nature of biosystems brings great challenges to the specific analysis of molecular processes of interest. Nature provides antibodies for the specific recognition of antigens, which is a straight-forward way for targeted analysis. However, there are still limitations during the practical applications due to the big size of the antibodies, which accelerate the discovery of small molecular probes. Peptides built from various optional building blocks and easily achieved by chemical synthetic approaches with predictable conformations, are versatile and can act as tailor-made targeting *** this mini review, we summarize the recent developments in the discovery of novel peptides for bioanalytical and biomedical applications. Progresses in peptide-library design and selection strategies are presented. Recent achievements in the peptide-guided detection, imaging and disease treatment are also focused.

摘要：Although small in size, PM25 can do great harm to the environment, and city greening trees can reduce PM2.5 pollution to a certain extent. This paper reviewed the mechanism of city greening trees to reduce PM2.5 pollution, screening and classification of green land allocation model of PM2.5 reducing greening trees, and made prospect on how to construct the evaluation index system of PM2.5 re- ducing greening trees and urban green land allocation.