Vertical total electron content is examined to check whether the Ms7.1 Yushu earthquake on April 14, 2010, may have caused any anomalous ionospheric changes. The result shows two TEC increases over the epicenter vicin...Vertical total electron content is examined to check whether the Ms7.1 Yushu earthquake on April 14, 2010, may have caused any anomalous ionospheric changes. The result shows two TEC increases over the epicenter vicinity on April 1 and 5; these anomalies drifted from east to west, the latter across the whole China. The increase on April 5 was probably related to geomagnetic activity, whereas the one on April 1 may pos- sibly be related to the Yushu earthquake.展开更多
Based on the hypothesis of the active tectonic blocks on the Chinese continent and its adjacent regions (both the method of the DDA on a spherical surface and the GPS survey results observed from 1991 to 2001 are used...Based on the hypothesis of the active tectonic blocks on the Chinese continent and its adjacent regions (both the method of the DDA on a spherical surface and the GPS survey results observed from 1991 to 2001 are used), the movements and deformations of each active tectonic block are calculated. The calculation results show that although the movements and deformations of active tectonic blocks in the eastern region and in the western region of China are different, active tectonic blocks in the same active tectonic block region are coherent. Then, the relative velocities of the active tectonic blocks’ boundary zones are calculated, and the relationship between current crustal motion and strong seismic activities is discussed. Earthquakes ( M S≥7 0) on the Chinese continent since 1988 all occurred on boundary zones of active tectonic blocks with high slipping speed.展开更多
目的基于"质量源于设计"(quality by design,Qb D)理念,采用设计空间法优化参蒲盆炎颗粒喷雾干燥工艺。方法首先将集粉率、水分含量及芍药苷、绿原酸、虎杖苷、丹酚酸B含量6个指标作为关键质量属性(critical quality attribut...目的基于"质量源于设计"(quality by design,Qb D)理念,采用设计空间法优化参蒲盆炎颗粒喷雾干燥工艺。方法首先将集粉率、水分含量及芍药苷、绿原酸、虎杖苷、丹酚酸B含量6个指标作为关键质量属性(critical quality attribute,CQA),采用Plackett-Burman(P-B)设计实验,通过加权标准偏回归系数筛选出进风温度、进样速率、药液密度为3个关键工艺参数(critical process parameter,CPP);再采用Box-Behnken设计实验,通过逐步回归法建立CQA和CPP间的数学模型。结果方差分析显示模型P值均小于0.05,失拟值均大于0.05,可以较好地描述CQA和CPP之间的关系。最后通过MonteCarlo仿真法计算获得基于概率的设计空间并验证。结论在工艺参数设计空间内操作能够保证参蒲盆炎颗粒喷雾干燥工艺品质稳定,有助于提高批次间质量均一性,为产业化提供数据支撑。展开更多
基金supported by Special Foundation for seismic Research(201108004)Director Foundation of the Insititute of Seismology,China Earthquake Administration(200956018)
文摘Vertical total electron content is examined to check whether the Ms7.1 Yushu earthquake on April 14, 2010, may have caused any anomalous ionospheric changes. The result shows two TEC increases over the epicenter vicinity on April 1 and 5; these anomalies drifted from east to west, the latter across the whole China. The increase on April 5 was probably related to geomagnetic activity, whereas the one on April 1 may pos- sibly be related to the Yushu earthquake.
文摘Based on the hypothesis of the active tectonic blocks on the Chinese continent and its adjacent regions (both the method of the DDA on a spherical surface and the GPS survey results observed from 1991 to 2001 are used), the movements and deformations of each active tectonic block are calculated. The calculation results show that although the movements and deformations of active tectonic blocks in the eastern region and in the western region of China are different, active tectonic blocks in the same active tectonic block region are coherent. Then, the relative velocities of the active tectonic blocks’ boundary zones are calculated, and the relationship between current crustal motion and strong seismic activities is discussed. Earthquakes ( M S≥7 0) on the Chinese continent since 1988 all occurred on boundary zones of active tectonic blocks with high slipping speed.
文摘目的基于"质量源于设计"(quality by design,Qb D)理念,采用设计空间法优化参蒲盆炎颗粒喷雾干燥工艺。方法首先将集粉率、水分含量及芍药苷、绿原酸、虎杖苷、丹酚酸B含量6个指标作为关键质量属性(critical quality attribute,CQA),采用Plackett-Burman(P-B)设计实验,通过加权标准偏回归系数筛选出进风温度、进样速率、药液密度为3个关键工艺参数(critical process parameter,CPP);再采用Box-Behnken设计实验,通过逐步回归法建立CQA和CPP间的数学模型。结果方差分析显示模型P值均小于0.05,失拟值均大于0.05,可以较好地描述CQA和CPP之间的关系。最后通过MonteCarlo仿真法计算获得基于概率的设计空间并验证。结论在工艺参数设计空间内操作能够保证参蒲盆炎颗粒喷雾干燥工艺品质稳定,有助于提高批次间质量均一性,为产业化提供数据支撑。
