Field observation was conducted at typical rangeland in Mongolia to examine the frontal area index. Frontal area index is the characteristics of surface roughness elements affecting sand transport. The frontal area wa...Field observation was conducted at typical rangeland in Mongolia to examine the frontal area index. Frontal area index is the characteristics of surface roughness elements affecting sand transport. The frontal area was strongly correlated with the effective shelter length on sand transport in both short grasses and shrubs. The frontal area index was 0.031 and the relationship between the roughness length and frontal area index in this site agreed with past studies.展开更多
The frontal uplift of the Kuqa depression is an important oil and gas producing area. In this study, the distribution and origin of natural gas were discussed based on natural gas components and isotope data. The main...The frontal uplift of the Kuqa depression is an important oil and gas producing area. In this study, the distribution and origin of natural gas were discussed based on natural gas components and isotope data. The main components of natural gas were hydrocarbons with relatively high contents of C2+ component. Most gases were derived from terrestrial source rocks, and some came from marine rocks. The contents of non-hydrocarbon gases were high in the central part of the frontal uplift area and low in the two terminals. The distribution of oil composition was similar to that of natural gas, which was mainly controlled by the types of source rocks. Dry coefficient and maturity of natural gas in the frontal uplift were lower than those of gas in the Kelasu tectonic belt of the Kuqa depression, which was mainly affected by the difference of tectonic movements in both areas. In the frontal uplift, the traps were formed in the early stage and could capture the early formed oil and gas, and structural adjustment was slight in later stages, so the oil and gas could be effectively preserved. Multiperiodic oil and gas filling led to the complex distribution of natural gas.展开更多
以澳大利亚阿德莱德中心城区为研究区,基于高分辨率城市三维建筑物数据计算得到天空开阔度(sky view factor,SVF)与迎风面积指数(frontal area index,FAI),并将其与晴好天气下四季的城市热岛强度进行相关性分析。结果表明:晴好天气下,...以澳大利亚阿德莱德中心城区为研究区,基于高分辨率城市三维建筑物数据计算得到天空开阔度(sky view factor,SVF)与迎风面积指数(frontal area index,FAI),并将其与晴好天气下四季的城市热岛强度进行相关性分析。结果表明:晴好天气下,阿德莱德城市热岛强度(urban heat island intensity,UHII)在2010—2011年四季均呈现出夜间强、白天弱的变化特征。SVF与UHII在夜间呈显著线性负相关,白天呈线性正相关;而FAI与UHII在四季的夜间和早晨时段呈对数关系,白天呈线性负相关。SVF和FAI对不同季节、不同时刻的城市热岛影响不同,在不同空间尺度下的适用性也存在差异,SVF在不同空间尺度下适用性更强。展开更多
With the fast-accelerating pace of life,most of the population is troubled by anxious feelings,or they even developed anxiety disorders,which affect their life qualities viciously.The current treatment is not without ...With the fast-accelerating pace of life,most of the population is troubled by anxious feelings,or they even developed anxiety disorders,which affect their life qualities viciously.The current treatment is not without drawbacks,such as exhibiting slow or acute effects only.Music therapy has shown promising outcomes in significantly reducing tension and anxiety in many studies.To explore the underlying mechanism,we recruited 12 undergraduate student volunteers from Shanghai Jiao Tong University with habits of music listening.We explored the changes in the electroencephalogram(EEG)power spectrum both during and after listening to self-select favorite music,and the relation between EEG signals and anxiety-relieving during music listening.The results showed that the power of the band in the right parietal area was significantly higher in those who were self-report able to relax during music listening compared with those who could not get relaxed.We observed power increased in the right parietal area of self-reports,not able to relax while music playing.Also,a significant difference inband power in the left frontal area and band in the right frontal area before and after music listening was observed between high anxiety group and low anxiety group.These results imply that band activity in the left frontal area is associated with the anxiety-relieving capability of anxiety,which provides evidence for further elucidating the mechanism underlying anxiety-relieving during music listening.展开更多
文摘Field observation was conducted at typical rangeland in Mongolia to examine the frontal area index. Frontal area index is the characteristics of surface roughness elements affecting sand transport. The frontal area was strongly correlated with the effective shelter length on sand transport in both short grasses and shrubs. The frontal area index was 0.031 and the relationship between the roughness length and frontal area index in this site agreed with past studies.
基金supported by the National Natural Science Foundation of China (Grant Nos.40602016 40773032)
文摘The frontal uplift of the Kuqa depression is an important oil and gas producing area. In this study, the distribution and origin of natural gas were discussed based on natural gas components and isotope data. The main components of natural gas were hydrocarbons with relatively high contents of C2+ component. Most gases were derived from terrestrial source rocks, and some came from marine rocks. The contents of non-hydrocarbon gases were high in the central part of the frontal uplift area and low in the two terminals. The distribution of oil composition was similar to that of natural gas, which was mainly controlled by the types of source rocks. Dry coefficient and maturity of natural gas in the frontal uplift were lower than those of gas in the Kelasu tectonic belt of the Kuqa depression, which was mainly affected by the difference of tectonic movements in both areas. In the frontal uplift, the traps were formed in the early stage and could capture the early formed oil and gas, and structural adjustment was slight in later stages, so the oil and gas could be effectively preserved. Multiperiodic oil and gas filling led to the complex distribution of natural gas.
文摘以澳大利亚阿德莱德中心城区为研究区,基于高分辨率城市三维建筑物数据计算得到天空开阔度(sky view factor,SVF)与迎风面积指数(frontal area index,FAI),并将其与晴好天气下四季的城市热岛强度进行相关性分析。结果表明:晴好天气下,阿德莱德城市热岛强度(urban heat island intensity,UHII)在2010—2011年四季均呈现出夜间强、白天弱的变化特征。SVF与UHII在夜间呈显著线性负相关,白天呈线性正相关;而FAI与UHII在四季的夜间和早晨时段呈对数关系,白天呈线性负相关。SVF和FAI对不同季节、不同时刻的城市热岛影响不同,在不同空间尺度下的适用性也存在差异,SVF在不同空间尺度下适用性更强。
基金the National Natural Science Founda-tion of China(No.81871064),and the Cross Foundation of Arts and Science of Shanghai Jiao Tong University(No.14JCRZ01)。
文摘With the fast-accelerating pace of life,most of the population is troubled by anxious feelings,or they even developed anxiety disorders,which affect their life qualities viciously.The current treatment is not without drawbacks,such as exhibiting slow or acute effects only.Music therapy has shown promising outcomes in significantly reducing tension and anxiety in many studies.To explore the underlying mechanism,we recruited 12 undergraduate student volunteers from Shanghai Jiao Tong University with habits of music listening.We explored the changes in the electroencephalogram(EEG)power spectrum both during and after listening to self-select favorite music,and the relation between EEG signals and anxiety-relieving during music listening.The results showed that the power of the band in the right parietal area was significantly higher in those who were self-report able to relax during music listening compared with those who could not get relaxed.We observed power increased in the right parietal area of self-reports,not able to relax while music playing.Also,a significant difference inband power in the left frontal area and band in the right frontal area before and after music listening was observed between high anxiety group and low anxiety group.These results imply that band activity in the left frontal area is associated with the anxiety-relieving capability of anxiety,which provides evidence for further elucidating the mechanism underlying anxiety-relieving during music listening.
