【摘 要】
:
A thorough understanding of chemical composition,particle pH,and pollutant emissions is essential to address the climate and human health effects of atmospheric particles.In this study,we used a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR
【机 构】
:
Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,H
其他文献
大容量FBG传感网络解调系统中,信号去噪是影响FBG传感系统精确解调的重要因素.为了提高解调精度,本文提出一种以改进变分模态分解结合可调节半软阈值方法用于处理光纤信号.变分模态分解(VMD)将输入的信号分解为给定数量K个固有模态数(IMF),设置错误的K值会导致性能下降.本文在VMD的基础上添加4条约束条件,使其自适应的选取K值并减少了VMD的计算量,然后用新阈值函数进行去噪处理,最后通过温度测试实验,得到波长与温度的线性相关系数,评估性能与应用价值.实验结果表明,本文函数在连续性以及信号还原度均取得良好
Polycyclic aromatic hydrocarbons (PAHs),as persistent toxic substances (PTS),have been widely monitored in coastal environment,including seawater and sediment.However,sci-entific monitoring methods,like ecological risk assessment and integrated biomarker
The greatest problem in conventional Fenton reaction is the slow production of ROS (reactive oxygen species) because of the inefficient Fe3+/Fe2+ conversion.Based on the extraordinary photo-response property of two-dimensional molybdenite (2DM),photogener
Nowadays,more people tend to spend their recreational time in large national parks,and trace metal(loid)s in soils have attracted long-term attention due to their possible harm to human health.To investigate the pollution levels,potential sources and heal
Naturally complete mixing promotes the spontaneous redistribution of dissolved oxygen(DO),representing an ideal state for maintaining good water quality,and conducive to the biomineralization of organic matter.Water lifting aerators (WLAs) can extend the
Dechloranes are a group of halogenated flame retardants with a basic bicyclo[2.2.1]heptene,including Dechlorane Plus (DP),Dechlorane 602 (Dec 602),Dechlorane 603 (Dec 603) and Dechlorane 604 (Dec 604).A few epidemiological investigations and animal experi
Soil is a major sink for per-and perfluoroalkyl substances (PFAS),wherein PFAS may be transferred through the food chain to predators at upper trophic levels,which poses a threat to human health.Herein,the concentrations and distributions of legacy and no
The scientific application of stabilized materials has been considered an effective method for the in situ remediation of Cd-contaminated soil.This study aimed to investigate the per-sistence of the effect of a combined amendment of limestone and sepiolit
New particle formation (NPF) events are an increasingly interesting topic in air quality and climate science.In this study,the particle number size distributions,and the frequency of NPF events over Hefei were investigated from November 2018 to February 2
Alumina supported Pd catalyst (Pd/Al2O3) is active for complete oxidation of methane,while often suffers transient deactivation during the cold down process.Herein,heating and cool-ing cycle tests between 200 and 900℃ and isothermal experiments at 650℃ we