In this paper, we focus on the space-inhomogeneous three-state on the one-dimension lattice, a one-phase model and a two-phase model include. By using the transfer matrices method by Endo et al., we calculate the stat...In this paper, we focus on the space-inhomogeneous three-state on the one-dimension lattice, a one-phase model and a two-phase model include. By using the transfer matrices method by Endo et al., we calculate the stationary measure for initial state concrete eigenvalue. Finally we found the transfer matrices method is more effective for the three-state quantum walks than the method obtained by Kawai et al.展开更多
To better understand how severe storms form and evolve in the outer rainbands of typhoons, in this study, we in- vestigate the evolutionary characteristics and possible formation mechanisms for severe storms in the ra...To better understand how severe storms form and evolve in the outer rainbands of typhoons, in this study, we in- vestigate the evolutionary characteristics and possible formation mechanisms for severe storms in the rainbands of Typhoon Mujigae, which occurred during 2-5 October 2015, based on the NCEP-NCAR reanalysis data, conventional observations, and Doppler radar data. For the rainbands far from the inner core （eye and eyewall） of Mujigae （dis- tance of approximately 70-800 kin）, wind speed first increased with the radius expanding from the inner core, and then decreased as the radius continued to expand. The Rankine Vortex Model was used to explore such variations in wind speed. The areas of strong stormy rainbands were mainly located in the northeast quadrant of Mujigae, and overlapped with the areas of high winds within approximately 300-550 km away from the inner core, where the strong winds were conducive to the development of strong storms. A severe convective cell in the rainbands de- veloped into waterspout at approximately 500 km to the northeast of the inner core, when Mujigae was strengthening before it made landfall. Two severe convective cells in the rainbands developed into two tornadoes at approximately 350 km to the northeast of the inner core after Mujigae made landfall. The radar echo bands enhanced to 60 dBZ when mesocyclones occurred in the rainbands and induced tornadoes. The radar echoes gradually weakened after the mesocyclones weakened. The tops of parent clouds of the mesocyclones elevated at first, and then suddenly dropped about 20 min before the tornadoes appeared. Thereby, the cloud top variation has the potential to be used as an early warning of tornado occurrence.展开更多
目的:探讨妊娠合并血小板减少的病因和围产期的处理。方法:回顾性分折49例妊娠合并血小板减少的临床资料,妊娠相关性血小板减少(pregnancy-associated thrombocytopenia,PAT)30例(61.2%)为PAT组,妊娠合并高血压病(pregnancy with hypert...目的:探讨妊娠合并血小板减少的病因和围产期的处理。方法:回顾性分折49例妊娠合并血小板减少的临床资料,妊娠相关性血小板减少(pregnancy-associated thrombocytopenia,PAT)30例(61.2%)为PAT组,妊娠合并高血压病(pregnancy with hypertension,PHD)9例(18.4%)为PHD组,免疫性血小板减少症(immune thrombocytopenia,ITP)7例(14.3%)为ITP组,其他组3例(6.1%)。结果:PAT组和PHD组产后血小板计数均恢复至正常水平,与妊娠期比较差异有统计学意义(P<0.05);ITP组与其他组产后血小板计数均升高,但与妊娠期比较差异无统计学意义(P>0.05)。结论:妊娠合并血小板减少以PAT多见,病情轻,预后良好,其次为PHD、ITP和其他血液病,临床应根据产妇血小板减少的程度和产科特征,采取个体化治疗,以保母婴安全。展开更多
基金financially supported by the National Key Research and Development Program of China(2022YFB3803300)the Natural Science Foundation of Hunan Province of China(2021JJ10058)the Major Scientific and Technological Project of Changsha in 2022(kq2301002)。
基金supported by the National Natural Science Foundation of China(No.21825302,No.21903076)the Taishan Scholar Program of Shandong Province of China(tsqn201909122)。
文摘In this paper, we focus on the space-inhomogeneous three-state on the one-dimension lattice, a one-phase model and a two-phase model include. By using the transfer matrices method by Endo et al., we calculate the stationary measure for initial state concrete eigenvalue. Finally we found the transfer matrices method is more effective for the three-state quantum walks than the method obtained by Kawai et al.
基金Supported by the National Basic Research and Development(973)Program of China(2013CB430102)Open Research Fund of Key Laboratory of Geographic Information Science(KLGIS2015A01)+3 种基金China Meteorological Administration Special Public Welfare Research Fund(GYHY201306040,GYHY201306078,and GYHY201506001)National Natural Science Foundation of China(91537214,41275079,41305077,41405069,91537214,41505078,and 41305031)Research Innovation Program for College Graduates of Jiangsu Province(KYZZ-0246)Open Research Fund of State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences(2016LASW-B12)
文摘To better understand how severe storms form and evolve in the outer rainbands of typhoons, in this study, we in- vestigate the evolutionary characteristics and possible formation mechanisms for severe storms in the rainbands of Typhoon Mujigae, which occurred during 2-5 October 2015, based on the NCEP-NCAR reanalysis data, conventional observations, and Doppler radar data. For the rainbands far from the inner core （eye and eyewall） of Mujigae （dis- tance of approximately 70-800 kin）, wind speed first increased with the radius expanding from the inner core, and then decreased as the radius continued to expand. The Rankine Vortex Model was used to explore such variations in wind speed. The areas of strong stormy rainbands were mainly located in the northeast quadrant of Mujigae, and overlapped with the areas of high winds within approximately 300-550 km away from the inner core, where the strong winds were conducive to the development of strong storms. A severe convective cell in the rainbands de- veloped into waterspout at approximately 500 km to the northeast of the inner core, when Mujigae was strengthening before it made landfall. Two severe convective cells in the rainbands developed into two tornadoes at approximately 350 km to the northeast of the inner core after Mujigae made landfall. The radar echo bands enhanced to 60 dBZ when mesocyclones occurred in the rainbands and induced tornadoes. The radar echoes gradually weakened after the mesocyclones weakened. The tops of parent clouds of the mesocyclones elevated at first, and then suddenly dropped about 20 min before the tornadoes appeared. Thereby, the cloud top variation has the potential to be used as an early warning of tornado occurrence.
文摘目的:探讨妊娠合并血小板减少的病因和围产期的处理。方法:回顾性分折49例妊娠合并血小板减少的临床资料,妊娠相关性血小板减少(pregnancy-associated thrombocytopenia,PAT)30例(61.2%)为PAT组,妊娠合并高血压病(pregnancy with hypertension,PHD)9例(18.4%)为PHD组,免疫性血小板减少症(immune thrombocytopenia,ITP)7例(14.3%)为ITP组,其他组3例(6.1%)。结果:PAT组和PHD组产后血小板计数均恢复至正常水平,与妊娠期比较差异有统计学意义(P<0.05);ITP组与其他组产后血小板计数均升高,但与妊娠期比较差异无统计学意义(P>0.05)。结论:妊娠合并血小板减少以PAT多见,病情轻,预后良好,其次为PHD、ITP和其他血液病,临床应根据产妇血小板减少的程度和产科特征,采取个体化治疗,以保母婴安全。
