Endoscopic transnasal canaliculorhinostomy for refractory common canalicular obstruction with an unidentifiable lacrimal sac

AIM: To describe the role of endoscopic transnasal canaliculorhinostomy (ETC) in refractory common canalicular obstruction (CCO) associated with an absent or unidentifiable lacrimal sac.METHODS: The records of patients with refractory CCO who underwent ETC at the Eye Hospital of Wenzhou Medical University from October 2007 to December 2016 were ret

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Ballasting Weight on Net Buoyancy Changes and Submergence Depth for a Spherical Buoyancy–Driven Intelligent Float Based on the Ballasting Method

Net buoyancy changes affect hovering performance and increase the extra energy consumption Icing of deep-sea intelligent floats (DIFs) at different submergence depths.To improve the adjustment efficiency of net buoyancy changes and solve the extra energy consumption problem at different submergence depths, this study proposes a combination model of

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