|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Co-metabolic and biochar-promoted biodegradation of mixed PAHs by highly efficient microbial consortium QY1显示文摘Polycyclic aromatic hydrocarbons(PAHs), typical representatives of the persistent organic pollutants(POPs), have become ubiquitous in the environment.In this study, a novel microbial consortium QY1 that performed outstanding PAHs-degrading capacity has been enriched.The degradation characteristics of single and mixed PAHs treated with QY1 were studied, and the effect of biochar on biodegradation of mixed PAHs and the potential of biochar in PAHs-heavy metal combined pollution bioremediation were also investigated.Results showed that, in single substrate system, QY1 degraded 94.5% of 500 mg/L phenanthrene(PHE) and 17.8% of 10 mg/L pyrene(PYR) after 7 days, while in PHE-PYR mixture system, the biodegradation efficiencies of PHE(500 mg/L) and PYR(10 mg/L) reached 94.0%and 96.2%, respectively, since PHE served as co-metabolic substrate to have significantly improved PYR biodegradation.Notably, with the cooperation of biochar, the biodegradations of PHE and PYR were greatly accelerated.Further, biochar could reduce the adverse impact of heavy metals(Cd^(2+), Cu^(2+), Cr_(2)O_(7)^(2-)) on PYR biodegradation remarkably.The sequencing analysis revealed that Methylobacterium, Burkholderia and Stenotrophomonas were the dominant genera of QY1 in almost all treatments, indicating that these genera might play key roles in PAHs biodegradation.Overall, this study provided new insights into the efficient bioremediation of PAHs-contaminated site. | Min Li Hua Yin Minghan Zhu Yuanyuan Yu Guining Lu Zhi Dang | 2021 | Journal of Environmental Sciences2021，33，9： | 4 |
| 2 | Multifunctional polyethyleneimine for synthesis of core-shell nanostructures and electrochemiluminescent detection of three AMI biomarkers显示文摘Simplicity and stability of an analytical method are the key to practical applications.In order to achieve such a goal,a molecule with multifunction could be one of the strategies.In this work,the multifunctional characteristics of branched polyethylenemine(bPEI)were employed for verification of this hypothesis.Three types of amines in the bPEI can be used to synthesize core-shell nanostructures(bPEI@Au and SiO_(2)@bPEI@Au)in a simple one-pot process within 1 h,and as coreactants with over 500-fold enhancement for electrochemiluminescent(ECL)detection.Based on the remarkable performance of bPEI,a label-free ECL immunosensor and its array with the same assembly strategy were constructed for the simple and rapid determination of three acute myocardial infarction(AMI)biomarkers:cardiac troponin I(cTnI),human-type fatty acid binding protein(hFABP)and copeptin.Both methods exhibited excellent stability and sensitivity with wide linear range and low limits of detection down to fg/mL level by the photomultiplier tube and pg/mL level by the electron-multiplying charge-coupled device. | Xu Liang Lan Mi Zhengyou Yu Minghan Wang Yuecong Hu Xinhe Zheng Yi Shao Zhiwei Zhu Yuanhua Shao | 2021 | Science China Chemistry2021，64，12： | 0 |
| 3 | Design of advanced porous silver powder with high-sintering activity to improve silicon solar cells显示文摘Silver(Ag)paste is widely used in semiconductor metallization,especially in silicon solar cells.Ag powder is the material with the highest proportion in Ag paste.The morphology and structure of Ag powder are crucial which determine its characteristics,especially for the sintering activity.In this work,a simple method was developed to synthesize a type of microcrystalline spherical Ag particles(SP-A)with internal pores and the structural changes and sintering behavior were thoroughly studied by combining ultra-small-angle X-ray scattering(USAXS),small-angle X-ray scattering(SAXS),in-situ heating X-ray diffraction(XRD),focused ion beam(FIB),and thermal analysis measurement.Due to the unique internal pores,the grain size of SP-A is smaller,and the coefficient of thermal expansion(CTE)is higher than that of traditional solid Ag particles.As a result,the sintering activity of SP-A is excellent,which can form a denser sintered body and form silver nanoparticles at the Ag–Si interface to improve silver silicon contact.Polycrystalline silicon solar cell built with SP-A obtained a low series resistance(Rs)and a high photoelectric conversion efficiency(PCE)of 19.26%.These fill a gap in Ag particle structure research,which is significant for the development of high-performance electronic Ag particles and efficient semiconductor devices. | Yongsheng Li Ziwei Chen Rui Zhou Wenguang Zhao Mu Li Jun Chen Zhongyuan Huang Jian Liu Yuhang Li Maolin Yang Minghan Yu Dong Zhou Yuan Lin Feng Pan | 2024 | Nano Research2024，17，4： | 0 |
| 4 | Size-and leaf age-dependent effects on the photosynthetic and physiological responses of Artemisia ordosica to drought stress显示文摘Drought is one of the most significant natural disasters in the arid and semi-arid areas of China.Populations or plant organs often differ in their responses to drought and other adversities at different growth stages.At present,little is known about the size-and leaf age-dependent differences in the mechanisms of shrub-related drought resistance in the deserts of China.Here,we evaluated the photosynthetic and physiological responses of Artemisia ordosica Krasch.to drought stress using a field experiment in Mu Us Sandy Land,Ningxia Hui Autonomous Region,China in 2018.Rainfall was manipulated by installing outdoor shelters,with four rainfall treatments applied to 12 plots(5 m×5 m).There were four rainfall levels,including a control and rainfall reductions of 30%,50%and 70%,each with three replications.Taking individual crown size as the dividing basis,we measured the responses of A.ordosica photosynthetic and physiological responses to drought at different growth stages,i.e.,large-sized(>0.5 m^(2))and small-sized(≤0.5 m^(2))plants.The leaves of A.ordosica were divided into old leaves and young leaves for separate measurement.Results showed that:(1)under drought stress,the transfer efficiency of light energy captured by antenna pigments to the photosystem II(PSII)reaction center decreased,and the heat dissipation capacity increased simultaneously.To resist the photosynthetic system damage caused by drought,A.ordosica enhanced its free radical scavenging capacity by activating its antioxidant enzyme system;and(2)growth stage and leaf age had effects on the reaction of the photosynthetic system to drought.Small A.ordosica plants could not withstand severe drought stress(70%rainfall reduction),whereas large A.ordosica individuals could absorb deep soil water to ensure their survival in severe drought stressed condition.Under 30%and 50%rainfall reduction conditions,young leaves had a greater ability to resist drought than old leaves,whereas the latter were more resistant to severe drought stress.The response of A.ordosica photosynthetic system reflected the trade-off at different growth stages and leaf ages of photosynthetic production under different degrees of drought.This study provides a more comprehensive and systematic perspective for understanding the drought resistance mechanisms of desert plants. | WANG Chunyuan YU Minghan DING Guodong GAO Guanglei ZHANG Linlin HE Yingying LIU Wei | 2021 | Journal of Arid Land2021，13，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员