Calculation of tidal changes reveals that the MS 7. 0 Lushan County,Sichuan,China,earthquake of April 20,2013 occurred at the minimum phase point of tidal force. It indicates that the seismogenic fault on which the ti...Calculation of tidal changes reveals that the MS 7. 0 Lushan County,Sichuan,China,earthquake of April 20,2013 occurred at the minimum phase point of tidal force. It indicates that the seismogenic fault on which the tidal force acts on is of thrust type. The outgoing long-wave radiation( OLR) is the energy radiating from the Earth as infrared radiation at low energy to space. According to the tidal cycle,abnormal OLR change is analyzed based on NOAA satellite data around the whole of China before and after the earthquake. The result shows that the OLR changed evidently with the tide force change.Temporally,the change went through the course: initial OLR rise → s trengthening →reaching abnormal peak → a ttenuation → r eturning to normal; in space,the abnormal area was distributed along the Longmenshan fault and evolved as: scattering→ c onvergent→ s cattering. The process is similar to the change process of rock breaking under stress loading. It indicates that the celestial tidal force can trigger earthquakes when the tectonic stress reaches the critical break point of an active fault and the OLR anomaly is proportional to the seismic tectonic stress change. It is of practical value to combine OLR and tidal force anomaly with earthquake precursor studies.展开更多
卵巢肿瘤早期诊断至关重要。超声检查作为首选成像方法,具有高度敏感性(sensitivity, Sens)和特异性(specificity, Spec),但仍有20%的肿瘤良恶性无法明确。MRI已被作为是卵巢肿瘤良恶性诊断的非手术标准。附件肿瘤评估(Assessment of Di...卵巢肿瘤早期诊断至关重要。超声检查作为首选成像方法,具有高度敏感性(sensitivity, Sens)和特异性(specificity, Spec),但仍有20%的肿瘤良恶性无法明确。MRI已被作为是卵巢肿瘤良恶性诊断的非手术标准。附件肿瘤评估(Assessment of Different NEoplasias in the AdneXa, ADNEX)MR评分系统可以较好地对肿瘤进行风险评估及分层,对早期准确检测肿瘤、确定肿瘤的亚型、决定治疗方式及提高生存率有着重要意义。鉴于此,本文将讲述ADNEX MR评分系统的扫描技术、评分规则及临床相应处理方法,综述其应用现状及相关研究进展,以便临床工作者更好地了解并运用。展开更多
基金supported by the science for earthquake resilience of China(No.XH15050)the Research on Determination and Announcement of the National Significant Seismic Monitoring and Protction Regions During 2015 to 2016(201508010)
文摘Calculation of tidal changes reveals that the MS 7. 0 Lushan County,Sichuan,China,earthquake of April 20,2013 occurred at the minimum phase point of tidal force. It indicates that the seismogenic fault on which the tidal force acts on is of thrust type. The outgoing long-wave radiation( OLR) is the energy radiating from the Earth as infrared radiation at low energy to space. According to the tidal cycle,abnormal OLR change is analyzed based on NOAA satellite data around the whole of China before and after the earthquake. The result shows that the OLR changed evidently with the tide force change.Temporally,the change went through the course: initial OLR rise → s trengthening →reaching abnormal peak → a ttenuation → r eturning to normal; in space,the abnormal area was distributed along the Longmenshan fault and evolved as: scattering→ c onvergent→ s cattering. The process is similar to the change process of rock breaking under stress loading. It indicates that the celestial tidal force can trigger earthquakes when the tectonic stress reaches the critical break point of an active fault and the OLR anomaly is proportional to the seismic tectonic stress change. It is of practical value to combine OLR and tidal force anomaly with earthquake precursor studies.
文摘卵巢肿瘤早期诊断至关重要。超声检查作为首选成像方法,具有高度敏感性(sensitivity, Sens)和特异性(specificity, Spec),但仍有20%的肿瘤良恶性无法明确。MRI已被作为是卵巢肿瘤良恶性诊断的非手术标准。附件肿瘤评估(Assessment of Different NEoplasias in the AdneXa, ADNEX)MR评分系统可以较好地对肿瘤进行风险评估及分层,对早期准确检测肿瘤、确定肿瘤的亚型、决定治疗方式及提高生存率有着重要意义。鉴于此,本文将讲述ADNEX MR评分系统的扫描技术、评分规则及临床相应处理方法,综述其应用现状及相关研究进展,以便临床工作者更好地了解并运用。
