By employing the 6.7μm satellite vapor cloud images and NCEP/NCAR 1°×1° reanalysis datasets, the characteristics and mechanism of the dry intrusion, as well as its impacts on the low vortex precipita- ...By employing the 6.7μm satellite vapor cloud images and NCEP/NCAR 1°×1° reanalysis datasets, the characteristics and mechanism of the dry intrusion, as well as its impacts on the low vortex precipita- tion at the Meiyu front are explored in this paper. It is found that the formation,development and main- tenance of the low vortex precipitation at the Meiyu front are closely related to the evolution of the dry intrusion. The dry intrusion is characterized by high potential vorticity (PV), low humidity and cold air. The dry intrusion exhibits as an obvious dark zone on vapor cloud images, an area in which atmos- pheric relative humidity is lower than 60%. However, the features of the dry intrusion on the vapor im- ages are clearer than that of the humidity field, for the former is the digital vapor cloud images with high temporal and spatial resolution, and it can be used to explore the finer characteristics of the develop- ment, evolution and supplement of the intrusion during the development of the low vortex. The dry intrusion impacts accompanying the low vortex precipitation at the Meiyu front come from all levels of the troposphere, with the strongest intrusion located at the upper troposphere. The dry and cold air intrudes the vicinity of the low vortex from the upper isentropic surface to the lower one, slanting eastward from lower to higher level. The low vortex precipitation region is usually situated in front of the dry intrusion where the relative humidity gradient is higher. The research also reveals that the mechanism of the dry intrusion is that the high potential vorticity descends from the upper troposphere to the lower level, therefore, the dry intrusion can be used as an important index of the high PV forcing. To the west of the low vortex precipitation, the upper level northerlies descend across the isentropic surface, then the dry cold advection can trigger the instable development in the mid-low troposphere. The dry intrusion enhances the low vortex precipitation. Meanwhile, because of the 展开更多
China＇s first space seed-breeding satellite SJ-8 was launched by a LM-2C launch vehicle from the Jiuquan Satellite Launch Center on September 9, 2006. The satellite was put into the preset orbit and began to send bac...China＇s first space seed-breeding satellite SJ-8 was launched by a LM-2C launch vehicle from the Jiuquan Satellite Launch Center on September 9, 2006. The satellite was put into the preset orbit and began to send back high resolution microscope images on the morning of September 10. The Xi＇an Satellite Tracking and Control Center is responsible for monitoring, controlling, and recovering SJ-8.展开更多
<strong>Background:</strong> Hospice care is to provide necessary medical care and support for patients and the families at the end of life (EOL). Hospice care patients typically withdraw from aggressive t...<strong>Background:</strong> Hospice care is to provide necessary medical care and support for patients and the families at the end of life (EOL). Hospice care patients typically withdraw from aggressive treatment. Even though home hospice has been shown to improve the quality of care, home hospice patients still revoke the services for various reasons. A little is known about where home hospice patients are being transferred. This study aims to address this gap and explore common reasons for home hospice discharge and placements, where patients being transferred other than home. <strong>Methods:</strong> Data were retrieved from the 2007 National Home and Hospice Care Survey (NHHCS). NHHCS is one in a series of nationally representative sample surveys of U.S. home health and hospice agencies. <strong>Results:</strong> Within identified home hospice patients, approximately 82.1% were deceased at discharge, and 846 (18.2%) were discharged for other reasons, including patients being stabilized or improved (30.2%), aggressive treatment (31.8%), moved (e.g., geographically, 13.5%) and others. Patients lived with a spouse were less likely to utilize external resources, like volunteers, thereby more likely to discharge patients to long-term facilities. <strong>Discussion:</strong> The current study suggest that it is difficult for the family to give all remaining care for their loved ones despite the support and resources for those home hospice patients. The characteristics of those who transferred to nursing facilities from home hospice will be discussed throughout.展开更多
China's third lunar exploration satellite Chang'e 3 was launched from the Xichang Satellite Launch Center(XSLC)by a LM-3B launch vehicle on December 2,2013.Following the launches of Chang'e 1 and Chang'...China's third lunar exploration satellite Chang'e 3 was launched from the Xichang Satellite Launch Center(XSLC)by a LM-3B launch vehicle on December 2,2013.Following the launches of Chang'e 1 and Chang'e 2 in 2007 and 2010 respectively,Chang'e 3 was designed to conduct the national first lunar surface exploration mission with a lander and a rover named Yutu.The task was the first mission of展开更多
Yair Lior approaches the synthesis of East and West through form and content. He works with traditional Chinese tools, namely the Chinese brush, inks, traditional
基金Supported by the National Natural Science Foundation of China (Grant No. 40205008)Heavy Rain Opening Foundation (Grant No. IHR2005K04)the National Basic Research Program of China (Grant No.2006CB403601)
文摘By employing the 6.7μm satellite vapor cloud images and NCEP/NCAR 1°×1° reanalysis datasets, the characteristics and mechanism of the dry intrusion, as well as its impacts on the low vortex precipita- tion at the Meiyu front are explored in this paper. It is found that the formation,development and main- tenance of the low vortex precipitation at the Meiyu front are closely related to the evolution of the dry intrusion. The dry intrusion is characterized by high potential vorticity (PV), low humidity and cold air. The dry intrusion exhibits as an obvious dark zone on vapor cloud images, an area in which atmos- pheric relative humidity is lower than 60%. However, the features of the dry intrusion on the vapor im- ages are clearer than that of the humidity field, for the former is the digital vapor cloud images with high temporal and spatial resolution, and it can be used to explore the finer characteristics of the develop- ment, evolution and supplement of the intrusion during the development of the low vortex. The dry intrusion impacts accompanying the low vortex precipitation at the Meiyu front come from all levels of the troposphere, with the strongest intrusion located at the upper troposphere. The dry and cold air intrudes the vicinity of the low vortex from the upper isentropic surface to the lower one, slanting eastward from lower to higher level. The low vortex precipitation region is usually situated in front of the dry intrusion where the relative humidity gradient is higher. The research also reveals that the mechanism of the dry intrusion is that the high potential vorticity descends from the upper troposphere to the lower level, therefore, the dry intrusion can be used as an important index of the high PV forcing. To the west of the low vortex precipitation, the upper level northerlies descend across the isentropic surface, then the dry cold advection can trigger the instable development in the mid-low troposphere. The dry intrusion enhances the low vortex precipitation. Meanwhile, because of the
文摘China＇s first space seed-breeding satellite SJ-8 was launched by a LM-2C launch vehicle from the Jiuquan Satellite Launch Center on September 9, 2006. The satellite was put into the preset orbit and began to send back high resolution microscope images on the morning of September 10. The Xi＇an Satellite Tracking and Control Center is responsible for monitoring, controlling, and recovering SJ-8.
文摘<strong>Background:</strong> Hospice care is to provide necessary medical care and support for patients and the families at the end of life (EOL). Hospice care patients typically withdraw from aggressive treatment. Even though home hospice has been shown to improve the quality of care, home hospice patients still revoke the services for various reasons. A little is known about where home hospice patients are being transferred. This study aims to address this gap and explore common reasons for home hospice discharge and placements, where patients being transferred other than home. <strong>Methods:</strong> Data were retrieved from the 2007 National Home and Hospice Care Survey (NHHCS). NHHCS is one in a series of nationally representative sample surveys of U.S. home health and hospice agencies. <strong>Results:</strong> Within identified home hospice patients, approximately 82.1% were deceased at discharge, and 846 (18.2%) were discharged for other reasons, including patients being stabilized or improved (30.2%), aggressive treatment (31.8%), moved (e.g., geographically, 13.5%) and others. Patients lived with a spouse were less likely to utilize external resources, like volunteers, thereby more likely to discharge patients to long-term facilities. <strong>Discussion:</strong> The current study suggest that it is difficult for the family to give all remaining care for their loved ones despite the support and resources for those home hospice patients. The characteristics of those who transferred to nursing facilities from home hospice will be discussed throughout.
文摘China's third lunar exploration satellite Chang'e 3 was launched from the Xichang Satellite Launch Center(XSLC)by a LM-3B launch vehicle on December 2,2013.Following the launches of Chang'e 1 and Chang'e 2 in 2007 and 2010 respectively,Chang'e 3 was designed to conduct the national first lunar surface exploration mission with a lander and a rover named Yutu.The task was the first mission of
文摘Yair Lior approaches the synthesis of East and West through form and content. He works with traditional Chinese tools, namely the Chinese brush, inks, traditional
