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| 1 | Impacts of soil erosion on organic carbon and nutrient dynamics in an alpine grassland soil显示文摘 | Nie Xiaojun Zhao Tongqian Qiao Xuning | 2013 | Soil Science and Plant Nutrition2013，59，4： | 1 |
| 2 | Insight into the Inhibition of the Poisonous Sulfide Production from Sulfate-Reducing Microbiota in Mariculture Habitat显示文摘The production of toxic sulfides is a common environmental problem in mariculture.Therefore,the effective inhibition of sulfidogens is the key to prevent sulfides production.In this study,the possibility and mechanism of nitrate(NO_(3)^(−))inhibiting the activity of the sulfate-reducing microbiota(SRM)from mariculture sediments was investigated.The results showed that 1,3,and 5 mmol L^(−1)NO_(3)^(−)continuously inhibited sulfide production for 1-3 d.As NO_(3)^(−) dosage increased to 7 mmol L^(−1),the duration of inhibition increased to 6 days.Denitrifying product NO_(2)^(−)heavily inhibited the activity of dissimilar sulfate reductase gene(dsrB)by 3 orders,which was the main reason that the sulfate-reducing activity was inhibited.The SRM structure changed significantly with the dosage of NO_(3)^(−),while the abundance of sulfidogens Desulfovibrio species increased due to their capability of detoxifying nitrite through nitrite reductase.Hence,sulfidogens Desulfovibrio species are more adaptable to a high nitrate/nitrite environment,and the traditional control strategies by dosing nitrate/nitrite should be paid more attention to.The findings will serve as helpful guidelines for sulfate-reducing microbiota in the habitat of mariculture to reduce their generation of poisonous sulfide. | ZHAO Xuning ZHANG Zhiming ZHAO Yangguo MUPINDU Progress | 2024 | Journal of Ocean University of China2024，23，2： | 0 |
| 3 | Experimental Research about Denitrification by Box Filler Enhancing MBR Process显示文摘[Objective]The research aimed to study removal effects of the organic matter and N by box filler enhancing MBR process.[Method]By adding box filler into reaction pool of the MBR to treat domestic sewage,removal effects of the organic matter and N by box filler enhancing MBR process were studied.[Result]COD means in effluent were respectively 26.8 and 24.7 mg /L without and with adding filler.Average removal rates of the NH 3-N were respectively 98.44% and 96.37% with and without dosing filler,while average removal rates of the TN were 24.03% and 16.43%,respectively.COD and NH 3-N concentrations in effluent were lower than Level-one A criteria of Discharge Standard of the Pollutant for Municipal Wastewater Treatment Plant(GB18918-2002).NO 3-N was main existence form of the TN in effluent and occupied 98.06%,while NH 3 N and NO 2-N only accounted for 1.22% and 0.72%.Further suggestion for denitrification study was as below.Firstly,the proportion of box filler on volume of the reaction cell should increase to 4%-5%.Secondly,single smaller filler with larger amount of internal fiber ought to be replaced.Thirdly,aeration amount needed to be decreased to right value,making that DO of the MBR reaction cell reduced to 1.5-3.0 mg /L.[Conclusion] The research provided theoretical basis for future engineering practice. | Xuning Li Tingquan Pei Huan Liu Zhenye Zhao Liyong Mei | 2013 | Meteorological and Environmental Research2013，4，1： | 0 |
| 4 | Thermal runaway propagation behavior of the Cell-to-Pack battery system显示文摘Structurally compact battery packs significantly improve the driving range of electric vehicles.Technologies like Cell-to-Pack increase energy density by 15%-20%.However,the safety implications of multiple tightly-packed battery cells still require in-depth research.This paper studies thermal runaway propagation behavior in a Cell-to-Pack system and assesses propagation speed relative to other systems.The investigation includes temperature response,extent of battery damage,pack structure deformation,chemical analysis of debris,and other considerations.Results suggest three typical patterns for the thermal runaway propagation process:ordered,disordered,and synchronous.The synchronous propagation pattern displayed the most severe damage,indicating energy release is the largest under the synchronous pattern.This study identifies battery deformation patterns,chemical characteristics of debris,and other observed factors that can both be applied to identify the cause of thermal runaway during accident investigations and help promote safer designs of large battery packs used in large-scale electric energy storage systems. | Huaibin Wang Qinzheng Wang Zhenyang Zhao Changyong Jin Chengshan Xu Wensheng Huang Zhuchen Yuan Shuyu Wang Yang Li Yanhong Zhao Junli Sun Xuning Feng | 2023 | Journal of Energy Chemistry2023，，9： | 0 |
| 5 | Screening performance of methane activation over atomically dispersed metal catalysts on defective boron nitride monolayers:A density functional theory study显示文摘Methane(CH_(4))controllable activation is the key process for CH_(4)upgrading,which is sensitive to the surface oxygen species.The high thermal conductivity and superb thermal stability of the hexagonal boron nitride(h-BN)sheet makes a single transition metal atom doped hexagonal boron nitride monolayer(TM-BN)possible to be a promising material for catalyzing methane partial oxidation.The performances of 24 TM-BNs for CH_(4)activation are systematically investigated during the CH_(4)oxidation by means of first-principles computation.The calculation results unravel the periodic va riation trends for the stability of TM-BN,the adsorption strength and the kind of O_(2)species,and the resulting CH_(4)activation performance on TM-BNs.The formed peroxide O_(2)^(2-)of which the O-O bond could be broken and O-anions are found to be reactive oxygen species for CH_(4)activation under the mild conditions.It is found that the redox potential of TM center,including its valence electron number,coordination environment,and the work function of TM-BN,is the underlying reason for the formation of different oxygen species and the resulting activity for CH_(4)oxidative dehydrogenation. | Xiao-Ming Cao Haijin Zhou Liyang Zhao Xuning Chen Peijun Hu | 2021 | Chinese Chemical Letters2021，32，6： | 0 |
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