Formaldehyde(HCHO)is a high-yield product of the oxidation of volatile organic compounds(VOCs)released by anthropogenic activities,fires,and vegetations.Hence,we examined the spatiotemporal variation trends in HCHO co...Formaldehyde(HCHO)is a high-yield product of the oxidation of volatile organic compounds(VOCs)released by anthropogenic activities,fires,and vegetations.Hence,we examined the spatiotemporal variation trends in HCHO columns observed using the Ozone Monitoring Instrument(OMI)during 2005–2021 across the Fenwei Plain(FWP)and analysed the source and variability of HCHO using multi-source data,such as thermal anomalies.The spatial distribution of the annualmean HCHO in the FWP increased from northwest to southeast during 2005–2021,and the high-value aggregation areas contracted and gradually clustered,forming a belt-shaped distribution area from Xi’an to Baoji,north of the Qinling Mountains.The annual mean HCHO concentration generally showed a two-step increase over the 17 years.Fires showed a single-peak trend in March and a double-peak M-shaped trend in March and October,whereas urban thermal anomalies(UTAs)showed an inverted U-shaped trend over 17 years,with peaks occurring in May.The HCHO peaks are mainly caused by the alternating contributions of fires and UTAs.The fires and UTAs(predominantly industrial heat sources)played a role in controlling the background level of HCHO in the FWP.Precipitation and temperature were also important influencing variables for seasonal variations,and the influence of plant sources on HCHO concentrations had significant regional characteristics and contributions.In addition,the FWP has poor dispersion conditions and is an aggregated area for the long-range transport of air pollutants.展开更多
The unresolved transition array(UTA) simulation with configuration average approximation is used to calculate the spectral properties of plasmas involving complex ions.This method is used to simulate the transmission ...The unresolved transition array(UTA) simulation with configuration average approximation is used to calculate the spectral properties of plasmas involving complex ions.This method is used to simulate the transmission of X-rays through aluminum plasma and niobium plasma respectively.The results are compared with experiments and other results of advanced models and good agreements are obtained.展开更多
The contemporary scientist and German developmental psychologist at the Institute of Cognitive Neuroscience of University College London, Uta Frith has mainly focused her research on autism spectrum disorder and the r...The contemporary scientist and German developmental psychologist at the Institute of Cognitive Neuroscience of University College London, Uta Frith has mainly focused her research on autism spectrum disorder and the related theory-of-mind deficit. To explain the autistic mentalistic deficit, the psychologist has used a specific tool: art, her initial pursuit cultivated at the Universit<span style="color:#4F4F4F;font-family:-apple-system, "font-size:16px;white-space:normal;background-color:#FFFFFF;">ä</span>t des Saarlandes, in Germany. Thus, this work seeks to reconstruct the artistic influences on Uta Frith’s scientific efforts, highlighting how the dialogical intersection of two seemingly distant disciplines, like art and neuroscience, can generate surprising new networks of signification and an understanding of the intrapsychic and interpsychic worlds. Art challenges us to develop moments of neuroscientific knowledge. On the other. In contrast, neuroscience offers the opportunity to develop further insights into the role of visual perception in contemplating works of art.展开更多
基金supported by the National Natural Science Foundation of China(No.41571062)the Fundamental Research Funds for the Central Universities(No.2021TS014)the Natural Science Basic Research Plan in Shaanxi Province of China(No.2023-JC-YB-259).
文摘Formaldehyde(HCHO)is a high-yield product of the oxidation of volatile organic compounds(VOCs)released by anthropogenic activities,fires,and vegetations.Hence,we examined the spatiotemporal variation trends in HCHO columns observed using the Ozone Monitoring Instrument(OMI)during 2005–2021 across the Fenwei Plain(FWP)and analysed the source and variability of HCHO using multi-source data,such as thermal anomalies.The spatial distribution of the annualmean HCHO in the FWP increased from northwest to southeast during 2005–2021,and the high-value aggregation areas contracted and gradually clustered,forming a belt-shaped distribution area from Xi’an to Baoji,north of the Qinling Mountains.The annual mean HCHO concentration generally showed a two-step increase over the 17 years.Fires showed a single-peak trend in March and a double-peak M-shaped trend in March and October,whereas urban thermal anomalies(UTAs)showed an inverted U-shaped trend over 17 years,with peaks occurring in May.The HCHO peaks are mainly caused by the alternating contributions of fires and UTAs.The fires and UTAs(predominantly industrial heat sources)played a role in controlling the background level of HCHO in the FWP.Precipitation and temperature were also important influencing variables for seasonal variations,and the influence of plant sources on HCHO concentrations had significant regional characteristics and contributions.In addition,the FWP has poor dispersion conditions and is an aggregated area for the long-range transport of air pollutants.
基金Supported by Laboratory for Shock Wave and Detonation Physics Pesearch,Institute of Fluid Physics,and the by research grant No.970230 of the China Academy of Engineering Physics
文摘The unresolved transition array(UTA) simulation with configuration average approximation is used to calculate the spectral properties of plasmas involving complex ions.This method is used to simulate the transmission of X-rays through aluminum plasma and niobium plasma respectively.The results are compared with experiments and other results of advanced models and good agreements are obtained.
文摘The contemporary scientist and German developmental psychologist at the Institute of Cognitive Neuroscience of University College London, Uta Frith has mainly focused her research on autism spectrum disorder and the related theory-of-mind deficit. To explain the autistic mentalistic deficit, the psychologist has used a specific tool: art, her initial pursuit cultivated at the Universit<span style="color:#4F4F4F;font-family:-apple-system, "font-size:16px;white-space:normal;background-color:#FFFFFF;">ä</span>t des Saarlandes, in Germany. Thus, this work seeks to reconstruct the artistic influences on Uta Frith’s scientific efforts, highlighting how the dialogical intersection of two seemingly distant disciplines, like art and neuroscience, can generate surprising new networks of signification and an understanding of the intrapsychic and interpsychic worlds. Art challenges us to develop moments of neuroscientific knowledge. On the other. In contrast, neuroscience offers the opportunity to develop further insights into the role of visual perception in contemplating works of art.
