The Late Cretaceous tectonic upheaval was an important event during the evolution of the Qaidam Basin, resulting in the omission of the Upper Cretaceous in the whole basin and unconformities between the Paleogene sequ...The Late Cretaceous tectonic upheaval was an important event during the evolution of the Qaidam Basin, resulting in the omission of the Upper Cretaceous in the whole basin and unconformities between the Paleogene sequence and pre-K2 strata. Inte-grating geological and geophysical data, two different groups of Late Cretaceous faults were recognized in the study area, one group consisting of E-W extending strike-slip faults (e.g., the Maxian and Yema-Jinan faults in the Mahai area, which caused an E-W omission zone of Mesozoic), while the other one has NW-SE thrust faults, resulting in NW-SE fold-and-thrust belts. Considering the different strikes and scale of these two groups, a simple-shear model has been employed to explain this structural phenomenon. The NW-SE thrust faults were thought to be subsidiary to the E-W strike-slip faults. Putting this into the framework of the Cretaceous paleogeographic environment of central Asia, it is inferred that this tectonic event of the Qaidam Basin is a response to the continuous northward drifting of the India plate.展开更多
目的分析无创通气在全身麻醉恢复期辅助呼吸的临床应用效果.方法选取2012年10月至2016年12月曲靖市第二人民医院麻醉科共1 380例全身麻醉恢复期留置口咽通气道患者作为研究对象,按照随机数字表将其分为:螺纹管面罩给氧组(n=690)及无创...目的分析无创通气在全身麻醉恢复期辅助呼吸的临床应用效果.方法选取2012年10月至2016年12月曲靖市第二人民医院麻醉科共1 380例全身麻醉恢复期留置口咽通气道患者作为研究对象,按照随机数字表将其分为:螺纹管面罩给氧组(n=690)及无创通气组(n=690),螺纹管面罩给氧组采用四头带面罩给氧,无创通气组采用无创通气,对比2组患者术后15 min HR、BP、SpO_2、RR、不良反应、满意度以及清醒时间.结果无创通气给氧组的术后15 min HR、BP、SPO_2、RR、上呼吸道梗阻、呼吸困难、无助恐惧感、安全性、患者舒适(自然清醒)感、满意度明显好于螺纹管面罩给氧组(P<0.05);无创通气给氧组患者的清醒时间为(10.15±2.26)min,螺纹管面罩给氧组患者的清醒时间为(16.13±3.73)min(P<0.05).结论在全身麻醉恢复期,与螺纹管面罩给氧相比,采用无创通气能够大大提高患者麻醉恢复期呼吸及循环参数、安全性、舒适感及满意度,进一步缩短清醒时间,值得推广.展开更多
In this paper,a controlled laboratory experiment to investigate the response properties of reflec-tometry to the density fluctuations is presented.The reflectometer signal is observed to be highly spatially localized ...In this paper,a controlled laboratory experiment to investigate the response properties of reflec-tometry to the density fluctuations is presented.The reflectometer signal is observed to be highly spatially localized in the plasma.The quantitative measurement has demonstrated that the signal originates about one free space wavelength of the probe•wave in front of the critical layer and this position is independent of the fluctuation wavenumber.It is also found that the sensitivity of transverse response to wavenumbers is different from that of longitudinal response.展开更多
文摘The Late Cretaceous tectonic upheaval was an important event during the evolution of the Qaidam Basin, resulting in the omission of the Upper Cretaceous in the whole basin and unconformities between the Paleogene sequence and pre-K2 strata. Inte-grating geological and geophysical data, two different groups of Late Cretaceous faults were recognized in the study area, one group consisting of E-W extending strike-slip faults (e.g., the Maxian and Yema-Jinan faults in the Mahai area, which caused an E-W omission zone of Mesozoic), while the other one has NW-SE thrust faults, resulting in NW-SE fold-and-thrust belts. Considering the different strikes and scale of these two groups, a simple-shear model has been employed to explain this structural phenomenon. The NW-SE thrust faults were thought to be subsidiary to the E-W strike-slip faults. Putting this into the framework of the Cretaceous paleogeographic environment of central Asia, it is inferred that this tectonic event of the Qaidam Basin is a response to the continuous northward drifting of the India plate.
文摘目的分析无创通气在全身麻醉恢复期辅助呼吸的临床应用效果.方法选取2012年10月至2016年12月曲靖市第二人民医院麻醉科共1 380例全身麻醉恢复期留置口咽通气道患者作为研究对象,按照随机数字表将其分为:螺纹管面罩给氧组(n=690)及无创通气组(n=690),螺纹管面罩给氧组采用四头带面罩给氧,无创通气组采用无创通气,对比2组患者术后15 min HR、BP、SpO_2、RR、不良反应、满意度以及清醒时间.结果无创通气给氧组的术后15 min HR、BP、SPO_2、RR、上呼吸道梗阻、呼吸困难、无助恐惧感、安全性、患者舒适(自然清醒)感、满意度明显好于螺纹管面罩给氧组(P<0.05);无创通气给氧组患者的清醒时间为(10.15±2.26)min,螺纹管面罩给氧组患者的清醒时间为(16.13±3.73)min(P<0.05).结论在全身麻醉恢复期,与螺纹管面罩给氧相比,采用无创通气能够大大提高患者麻醉恢复期呼吸及循环参数、安全性、舒适感及满意度,进一步缩短清醒时间,值得推广.
基金Supported by the National Natural Science Foundation of Chinathe Doctoral Training Foundation of National Education Commission and Chinese Academy of Sciences.
文摘In this paper,a controlled laboratory experiment to investigate the response properties of reflec-tometry to the density fluctuations is presented.The reflectometer signal is observed to be highly spatially localized in the plasma.The quantitative measurement has demonstrated that the signal originates about one free space wavelength of the probe•wave in front of the critical layer and this position is independent of the fluctuation wavenumber.It is also found that the sensitivity of transverse response to wavenumbers is different from that of longitudinal response.
