油井出砂是油田开采中后期常见的问题,出砂后不仅会磨蚀井下设备,也会砂埋油层,造成油井停产,危害极大。针对目前常规冲砂技术具有......

AIM: To assess the efficacy and safety of diverting colostomy in treating severe hemorrhagic chronic radiation proctitis......

Background: The introduction of pipeline embolisation device (PED) has improved the feasibility of endovascular treatmen......

为更好地提高煤层透气性,结合煤矿井下压裂应用现状和暂堵转向压裂技术原理,本文创造性的提出了将暂堵转向压裂技术应用于煤矿井下......

征地红线图和实物指标调查是实物调查的基础,也是各类决策的重要依据。实物调查本身就是具有空间属性的,其工作内容和地理信息之间......