Research on the Development of Smart Animal Husbandry in Beijing

With the rapid development of agricultural science and technology,animal husbandry,as an important pillar in the field of agriculture,is gradually moving towards a new era of smart animal husbandry with the deep integration of informatization and digitalization.This transformation not only breaks through the traditional production mode of animal husbandry,but also promotes it to a new form under the Internet ecology,draws a new blueprint for the development of agriculture and animal husbandry,and gives birth to numerous potential business opportunities for the development of new agriculture.However,the practice and promotion of smart animal husbandry is not a smooth road,and many challenges and problems need to be solved urgently.On the basis of an in-depth investigation of the development status of smart animal husbandry in Beijing,this paper comprehensively analyzes the current problems,including the difficulty of technology integration,the lack of talent reserve,and the need to improve the policy environment.In view of these problems,it puts forward a series of practical suggestions,in order to speed up the development of animal husbandry in Beijing to the direction of smart development,and realize the sustainable development of animal husbandry.

Unraveling the contribution of Co(IV)and free radicals in Co^(2+)-activated Peroxymonosulfate process:Reaction mechanism,degradation pathway,and DFT calculation

The Co^(2+)and Peroxymonosulfate(PMS)reaction is a highly regarded advanced oxidation process(AOP)that has been extensively researched.The consensus regarding the relative contribution of reactive species in the Co2+/PMS system under different pH conditions has not been established.In this study,quenching experiments and electron spin resonance(ESR)tests demonstrated the coexistence of Co(IV),sulfate radical(SO_(4)^(•-)),hydroxyl radical(•OH),and singlet oxygen(1O2),and there fell to CBZ degradation were Co(IV)>SO_(4)^(•-)->•OH≈1O2 in the optimal conditions,where almost 100%of CBZ was degraded in the Co2+/PMS system within 30 min.Furthermore,Cl−would suppress the formation of Co(IV),SO_(4)^(•-),and•OH but enhance the yield of 1O2,thereby showing a trend of inhibiting CBZ degradation.The probe compound used in this study was Methyl Phenyl Sulfoxide(PMSO),while methyl phenyl sulfone(PMSO_(2))as the indicator of Co(IV),the generation efficiency of PMSO_(2)(η'[PMSO_(2)])increased with reaction time and reached 70%–98%at 40 min at all set pH values(3,4,6,and 8).These results suggest that Co(IV)played a significant role in the Co^(2+)/PMS system and its importance became more pronounced as the reaction progressed.PMSO probe and SO_(4)^(•-)quantification experiments jointly revealed that Co(IV)had the greatest performance at pH 4,and compared to other pH values,SO_(4)^(•-)had the largest contribution in the initial stage of the reaction at pH 6.The Ecological Structure Activity Relationships(ECOSAR)software was utilized to predict the toxicity of the degradation by-products.Additionally,luminescent bacteria experiments were conducted to assess the acute toxicity of the reaction solution.The results of these experiments demonstrated that the Co^(2+)/PMS process exhibited a remarkable ability to detoxify the solution.