Put the Dunhuang Grottoes No.23 of "farming drawing" bottom-left corner of "Rain farming drawing" as the "Lotus Sutra" of the "Overture".Use the Image Study by the methods of an...Put the Dunhuang Grottoes No.23 of "farming drawing" bottom-left corner of "Rain farming drawing" as the "Lotus Sutra" of the "Overture".Use the Image Study by the methods of analysis of Sogd Clothing,Sogd Dance,Sogd Music,Sogd Tower and Xianshouniao(衔绶鸟) behind the pictorial information of the Sogdian(Zoroastrianism)culture.展开更多
Studies based on AC high voltage tests have been done at Cepel to investigate the performance of 800 kV busbar insulators under heavy wetting conditions.Insulators were tested which are now used on site and also with ...Studies based on AC high voltage tests have been done at Cepel to investigate the performance of 800 kV busbar insulators under heavy wetting conditions.Insulators were tested which are now used on site and also with different configurations of booster sheds.Images recorded by ultra-violet(UV) camera were used to help the investigations on the effectiveness of booster sheds.By comparing UV images of the insulator being stressed with high voltage under heavy artificial rain,with and without booster sheds,it was possible to observe how significant the reduction on the flashover formation process was when booster sheds were used.The effectiveness of booster sheds was also quantified by determining the disruptive discharge of the insulator with and without them.The results of these studies can also be considered as contribution to national and international standard technical committees to improving the standardized procedure for tests on ultra high voltage(UHV) insulators under heavy rain.Subjects such as the clear definition of relevant UHV test procedure and test arrangements,including the use of UV camera,have to be taken into account.展开更多
To study the additional aerodynamic effect on a bridge girder under the action of wind-driven rain, the rainfall similarity considering raindrop impact and surface water is first given. Then, the dynamic characteristi...To study the additional aerodynamic effect on a bridge girder under the action of wind-driven rain, the rainfall similarity considering raindrop impact and surface water is first given. Then, the dynamic characteristics and the process of vortex and flutter generation of the segment models under different rain intensities and angles of attack are tested by considering several typical main girder sections as examples. The test results indicate that the start and end wind speeds,interval length and number of vortex vibrations remain unchanged when it is raining, rainfall will reduce the windinduced vortex response. When test rain intensity is large, the decrease of amplitude is obvious. However, after considering the rain intensity similarity in this study, all of actual maximum rain intensities after conversion approach the domestic extreme rain intensity of approximately 709 mm/h. It can be observed that rainfall has a limited influence on the dynamic characteristics of the structure and vortex vibration response. When the test rain intensity is 120 mm/h, the critical wind speed of the model flutter increases by 20%-30%. However, after considering the rain intensity similarity ratio, the influence of rainfall on the wind-induced flutter instability of the bridge girder may be ignored.展开更多
When Timothy A.Ross translated into English the short story Days for Watching the Sea by Huang Chu’un-ming, an influential Taiwan Residents writer in the 1970s, he gave the story a new name:A Flower in the Rainy Nigh...When Timothy A.Ross translated into English the short story Days for Watching the Sea by Huang Chu’un-ming, an influential Taiwan Residents writer in the 1970s, he gave the story a new name:A Flower in the Rainy Night.By using a flower to symbolize the heroine Pai-mei, this title reveals more clearly the misery Pai-mei suffers and the struggle she puts up against her fate. From a flower in the rainy night to a flower having a place in the garden, Pai-mei saves herself in the only way possible to her-giving birth to a child. When her profession deprives her of the dignity as a woman, she wins back people’s respect by becoming a mother. My paper is a textural analysis on how the symbols of flowers are used in the short story and how Pai-mei’s salvation is accomplished.展开更多
Rainfall trend analysis has asupreme role for forecasting the rain events,which is very vital for tropics where the fluctuation in occurrence of rainfall is widespread.The local level rainfall trend analysis on the ot...Rainfall trend analysis has asupreme role for forecasting the rain events,which is very vital for tropics where the fluctuation in occurrence of rainfall is widespread.The local level rainfall trend analysis on the other side provides valuable information to cope up with the vehemence of global climate changes.The present study analyses the trend in the rainfall and number of rain days in a tropical town ship,Pattambi,located in the Bharathapuzha River basin of Kerala state of India.We used Man-Kendall rank correlation statistics to see the variations展开更多
The atmospheric pollution in Baghdad was investigated by using rainwater as a media for monitoring of pollution and also compared with the atmosphere pollution at reference stations of Al-Sulaimaniya in north of Iraq ...The atmospheric pollution in Baghdad was investigated by using rainwater as a media for monitoring of pollution and also compared with the atmosphere pollution at reference stations of Al-Sulaimaniya in north of Iraq and Al-Rutbah in Western Desert of Iraq. Rainwater sampling carried out at period extended from Nov.2007 to April 2008.Thirty five samples of rainwater were collected at seven monitoring展开更多
West Africa is a region where not only the climate has seen some of the most dramatic changes but also climate models carry the greatest level of uncertainty. Designing an accurate climate model can be tricky.In many ...West Africa is a region where not only the climate has seen some of the most dramatic changes but also climate models carry the greatest level of uncertainty. Designing an accurate climate model can be tricky.In many cases,while the models may be relatively accurate at the global level,they show important discrepancies compared to reality when applied at a smaller scale.Selecting the correct climate展开更多
Based on the variations of geographical locations, the summer rain belts over eastern China were classified in this study into eight types: Inner Mongolia, North China, the Yellow River, the Huaihe River, the Yangtze ...Based on the variations of geographical locations, the summer rain belts over eastern China were classified in this study into eight types: Inner Mongolia, North China, the Yellow River, the Huaihe River, the Yangtze River, the northern and southern parts of Jiangnan ( to the south of the lower Yangtze River valley), and South China. The file of 8-type rain belts was compiled from 1470 to 2005, and in order to extend the file of rain belts, it was further merged into a file of 4-type rain belts and also completed during the last millennium from 1000 to 1999. At last, the two files show that summer rain belts frequently occur in the Yangtze River valley in warm climate periods, but in the Yellow River or the Huaihe River valley in cold periods.展开更多
By using the summer torrential rain days data in Ningxia,the Yinchuan sounding data and the NCEP/NCAR reaualyzed data,the evolutional characteristics and the cause of torrential rain days in Ningxia were analyzed unde...By using the summer torrential rain days data in Ningxia,the Yinchuan sounding data and the NCEP/NCAR reaualyzed data,the evolutional characteristics and the cause of torrential rain days in Ningxia were analyzed under the background of climate warming.The results show that both annual torrential rain days and annual mean temperature displayed consistent increasing trends.Further analysis results indicate that atmospheric potential instability has grown in the daytime in both July and August and in the nighttime in July,but weakened in the nighttime in August after the climate warming of Ningxia.Therefore,the climate warming not only caused more distinctive diurnal variation of the vertical distribution of atmospheric temperatures in Yinchuan,but also resulted in the increase of torrential rain days and in more obvious diurnal variation of the torrential rain in Ningxia.展开更多
文摘Put the Dunhuang Grottoes No.23 of "farming drawing" bottom-left corner of "Rain farming drawing" as the "Lotus Sutra" of the "Overture".Use the Image Study by the methods of analysis of Sogd Clothing,Sogd Dance,Sogd Music,Sogd Tower and Xianshouniao(衔绶鸟) behind the pictorial information of the Sogdian(Zoroastrianism)culture.
文摘Studies based on AC high voltage tests have been done at Cepel to investigate the performance of 800 kV busbar insulators under heavy wetting conditions.Insulators were tested which are now used on site and also with different configurations of booster sheds.Images recorded by ultra-violet(UV) camera were used to help the investigations on the effectiveness of booster sheds.By comparing UV images of the insulator being stressed with high voltage under heavy artificial rain,with and without booster sheds,it was possible to observe how significant the reduction on the flashover formation process was when booster sheds were used.The effectiveness of booster sheds was also quantified by determining the disruptive discharge of the insulator with and without them.The results of these studies can also be considered as contribution to national and international standard technical committees to improving the standardized procedure for tests on ultra high voltage(UHV) insulators under heavy rain.Subjects such as the clear definition of relevant UHV test procedure and test arrangements,including the use of UV camera,have to be taken into account.
基金Projects(20B062,19B054)supported by Excellent Youth Program of Hunan Education Department,ChinaProject(2019JJ50688)supported by Hunan Provincial Natural Science Foundation of ChinaProject(kq195004)supported by Changsha Science and Technology Bureau Project,China。
文摘To study the additional aerodynamic effect on a bridge girder under the action of wind-driven rain, the rainfall similarity considering raindrop impact and surface water is first given. Then, the dynamic characteristics and the process of vortex and flutter generation of the segment models under different rain intensities and angles of attack are tested by considering several typical main girder sections as examples. The test results indicate that the start and end wind speeds,interval length and number of vortex vibrations remain unchanged when it is raining, rainfall will reduce the windinduced vortex response. When test rain intensity is large, the decrease of amplitude is obvious. However, after considering the rain intensity similarity in this study, all of actual maximum rain intensities after conversion approach the domestic extreme rain intensity of approximately 709 mm/h. It can be observed that rainfall has a limited influence on the dynamic characteristics of the structure and vortex vibration response. When the test rain intensity is 120 mm/h, the critical wind speed of the model flutter increases by 20%-30%. However, after considering the rain intensity similarity ratio, the influence of rainfall on the wind-induced flutter instability of the bridge girder may be ignored.
文摘When Timothy A.Ross translated into English the short story Days for Watching the Sea by Huang Chu’un-ming, an influential Taiwan Residents writer in the 1970s, he gave the story a new name:A Flower in the Rainy Night.By using a flower to symbolize the heroine Pai-mei, this title reveals more clearly the misery Pai-mei suffers and the struggle she puts up against her fate. From a flower in the rainy night to a flower having a place in the garden, Pai-mei saves herself in the only way possible to her-giving birth to a child. When her profession deprives her of the dignity as a woman, she wins back people’s respect by becoming a mother. My paper is a textural analysis on how the symbols of flowers are used in the short story and how Pai-mei’s salvation is accomplished.
文摘Rainfall trend analysis has asupreme role for forecasting the rain events,which is very vital for tropics where the fluctuation in occurrence of rainfall is widespread.The local level rainfall trend analysis on the other side provides valuable information to cope up with the vehemence of global climate changes.The present study analyses the trend in the rainfall and number of rain days in a tropical town ship,Pattambi,located in the Bharathapuzha River basin of Kerala state of India.We used Man-Kendall rank correlation statistics to see the variations
文摘The atmospheric pollution in Baghdad was investigated by using rainwater as a media for monitoring of pollution and also compared with the atmosphere pollution at reference stations of Al-Sulaimaniya in north of Iraq and Al-Rutbah in Western Desert of Iraq. Rainwater sampling carried out at period extended from Nov.2007 to April 2008.Thirty five samples of rainwater were collected at seven monitoring
文摘West Africa is a region where not only the climate has seen some of the most dramatic changes but also climate models carry the greatest level of uncertainty. Designing an accurate climate model can be tricky.In many cases,while the models may be relatively accurate at the global level,they show important discrepancies compared to reality when applied at a smaller scale.Selecting the correct climate
基金This work was supported by National Natural Science Foundation of China under Grant No. 40331010.
文摘Based on the variations of geographical locations, the summer rain belts over eastern China were classified in this study into eight types: Inner Mongolia, North China, the Yellow River, the Huaihe River, the Yangtze River, the northern and southern parts of Jiangnan ( to the south of the lower Yangtze River valley), and South China. The file of 8-type rain belts was compiled from 1470 to 2005, and in order to extend the file of rain belts, it was further merged into a file of 4-type rain belts and also completed during the last millennium from 1000 to 1999. At last, the two files show that summer rain belts frequently occur in the Yangtze River valley in warm climate periods, but in the Yellow River or the Huaihe River valley in cold periods.
文摘By using the summer torrential rain days data in Ningxia,the Yinchuan sounding data and the NCEP/NCAR reaualyzed data,the evolutional characteristics and the cause of torrential rain days in Ningxia were analyzed under the background of climate warming.The results show that both annual torrential rain days and annual mean temperature displayed consistent increasing trends.Further analysis results indicate that atmospheric potential instability has grown in the daytime in both July and August and in the nighttime in July,but weakened in the nighttime in August after the climate warming of Ningxia.Therefore,the climate warming not only caused more distinctive diurnal variation of the vertical distribution of atmospheric temperatures in Yinchuan,but also resulted in the increase of torrential rain days and in more obvious diurnal variation of the torrential rain in Ningxia.
