Barkam County,where the Aba Tibetan & Qiang Autonomous Pre-fecture government lies,is located on the intersection of South eastern of Qinghai-Tibet Plateau,Northwestern of Sichuan Basin and central Aba.Occupying 6...Barkam County,where the Aba Tibetan & Qiang Autonomous Pre-fecture government lies,is located on the intersection of South eastern of Qinghai-Tibet Plateau,Northwestern of Sichuan Basin and central Aba.Occupying 6,633 square kilometer,Barkam County boasts a time-honored history dating back to the Neolithic Age.Relics in Haxiu and Konglong reveal Barkam County to be an ethnic group settlement.All 15 ethnic groups,including Qiang,Hui,Han,among others,live in har-mony in Barkam now.Barkam has a population o...展开更多
For several lightning-strike disasters related to base station iron tower of mobile communication carrier operator, disaster-inducing factors were analyzed. The reason was as below: after lightning receptor of base s...For several lightning-strike disasters related to base station iron tower of mobile communication carrier operator, disaster-inducing factors were analyzed. The reason was as below: after lightning receptor of base station iron tower of mobile communication carder operator was struck by lightning, electromagnetic radiation was generated in the process lightning current leaking into the ground. In addition, it was lightning scattered- strike phenomenon induced by overhead lightning rod, that is, ground lightning falling density around overhead lightning rod was larger than mean at the site. Finally, some improvement measures were put forward.展开更多
文摘Barkam County,where the Aba Tibetan & Qiang Autonomous Pre-fecture government lies,is located on the intersection of South eastern of Qinghai-Tibet Plateau,Northwestern of Sichuan Basin and central Aba.Occupying 6,633 square kilometer,Barkam County boasts a time-honored history dating back to the Neolithic Age.Relics in Haxiu and Konglong reveal Barkam County to be an ethnic group settlement.All 15 ethnic groups,including Qiang,Hui,Han,among others,live in har-mony in Barkam now.Barkam has a population o...
文摘For several lightning-strike disasters related to base station iron tower of mobile communication carrier operator, disaster-inducing factors were analyzed. The reason was as below: after lightning receptor of base station iron tower of mobile communication carder operator was struck by lightning, electromagnetic radiation was generated in the process lightning current leaking into the ground. In addition, it was lightning scattered- strike phenomenon induced by overhead lightning rod, that is, ground lightning falling density around overhead lightning rod was larger than mean at the site. Finally, some improvement measures were put forward.