The paper introduces the tectonic background, focal mechanism and distribution of aftershock of the Wenchuan earthquake on May 12,2008. The earthquake is considered to be the result of long-term interaction between th...The paper introduces the tectonic background, focal mechanism and distribution of aftershock of the Wenchuan earthquake on May 12,2008. The earthquake is considered to be the result of long-term interaction between the eastward movement of the Bayan Har Block and the Sichuan Basin. Most of the earthquake energy was released in an area （the seismic source body） 330kin long,52km wide and 20km deep over 100s. Energy release in the source body was extremely uneven, and strong ground motion in the epicenter area shows obvious asymmetrical character in the time and space scale. The high-intensity area is distributed along the source body, and the intensity distribution bears an obvious anomalous characteristic. The investigation results indicate that more than 90 percent of casualties caused by this earthquake were in the areas of intensity IX or above. Houses, schools and hospitals etc. suffered serious damage. Lifelines such as transportation, water conservation etc. also suffered significant damage. Besides, earthquake-triggered avalanches, landslides, mud-rock flows and so on were extremely serious. The tremendous earthquake disaster highlighted the deficiencies in disaster prevention and mitigation management, scientific earthquake research, technology and application of earthquake disaster prevention, and publicity of earthquake preparedness and disaster reduction.展开更多
Purpose： To accurately assess the mechanism, type and severity of injury in Iranian multiple trauma patients of a trauma center. Methods： Patients with multiple traumas referring to the emergency department of Hashe...Purpose： To accurately assess the mechanism, type and severity of injury in Iranian multiple trauma patients of a trauma center. Methods： Patients with multiple traumas referring to the emergency department of Hasheminejad University Hospital in Mashhad, lran, entered this cross sectional study from March 2013 to December 2013. All the patients with injury severity score （ISS） 〉 9 were included in this study. Data analysis was performed by SPSS software （Version 11.5） and P values less than 0.05 were considered as significant differences. Results： Among the 6306 hospitalized trauma patients during this period, 148 had ISS〉9. The male fe- male ratio was 80%. The mean age of the patients was （33.5 m 19.3） years. And 71% of the patients were younger than 44 years old. There were 19 （13%） deaths from which 68.5% were older than 44 years old. The mean transfer time from the injury scene to hospital was （55 e 26） minutes. The most frequent mechanisms of injury were motorcycle crashes and falling from height, which together included 66.2% of all the injuries. A total of 84% of hospital deaths occurred after the first 24 h of hospitalization. Head and neck were the most common body injured areas with a prevalence of 111 cases （75%）. Conclusion： Motorcycle crashes have high frequency in lran. Since most victims are young males, injury prevention strategies should be considered to reduce the burden of injuries.展开更多
基金sponsored by the National Key Technology R&D Program(2006BAC13B01),China
文摘The paper introduces the tectonic background, focal mechanism and distribution of aftershock of the Wenchuan earthquake on May 12,2008. The earthquake is considered to be the result of long-term interaction between the eastward movement of the Bayan Har Block and the Sichuan Basin. Most of the earthquake energy was released in an area （the seismic source body） 330kin long,52km wide and 20km deep over 100s. Energy release in the source body was extremely uneven, and strong ground motion in the epicenter area shows obvious asymmetrical character in the time and space scale. The high-intensity area is distributed along the source body, and the intensity distribution bears an obvious anomalous characteristic. The investigation results indicate that more than 90 percent of casualties caused by this earthquake were in the areas of intensity IX or above. Houses, schools and hospitals etc. suffered serious damage. Lifelines such as transportation, water conservation etc. also suffered significant damage. Besides, earthquake-triggered avalanches, landslides, mud-rock flows and so on were extremely serious. The tremendous earthquake disaster highlighted the deficiencies in disaster prevention and mitigation management, scientific earthquake research, technology and application of earthquake disaster prevention, and publicity of earthquake preparedness and disaster reduction.
文摘Purpose： To accurately assess the mechanism, type and severity of injury in Iranian multiple trauma patients of a trauma center. Methods： Patients with multiple traumas referring to the emergency department of Hasheminejad University Hospital in Mashhad, lran, entered this cross sectional study from March 2013 to December 2013. All the patients with injury severity score （ISS） 〉 9 were included in this study. Data analysis was performed by SPSS software （Version 11.5） and P values less than 0.05 were considered as significant differences. Results： Among the 6306 hospitalized trauma patients during this period, 148 had ISS〉9. The male fe- male ratio was 80%. The mean age of the patients was （33.5 m 19.3） years. And 71% of the patients were younger than 44 years old. There were 19 （13%） deaths from which 68.5% were older than 44 years old. The mean transfer time from the injury scene to hospital was （55 e 26） minutes. The most frequent mechanisms of injury were motorcycle crashes and falling from height, which together included 66.2% of all the injuries. A total of 84% of hospital deaths occurred after the first 24 h of hospitalization. Head and neck were the most common body injured areas with a prevalence of 111 cases （75%）. Conclusion： Motorcycle crashes have high frequency in lran. Since most victims are young males, injury prevention strategies should be considered to reduce the burden of injuries.
