Based on the mixed-lubrication theory, a numerical simulation model of a reciprocating seal is visceratuant established.The model includes finite element, fluid mechanics, contact mechanics and deformation mechanics analyses.The hydrodynamic analysis uses elastohydrodynamic lubrication theory and inverse hydrodynamic lubrication to obtain the relat
Abstract Topological semimetals are three dimensional materials with symmetry-protected massless bulk excitations.As a special case, Weyl nodal-line semimetals are realized in materials having either no inversion or broken time-reversal symmetry and feature bulk nodal lines.The 111-family, including LaNiSi, LaPtSi and LaPtGe 2010 chevy malibu exhau
This paper discusses paradoxes in our relationship to and treatment of birds in captive and conservation contexts.The paper identifies modern and new challenges that arise from declining bird numbers worldwide.Such challenges have partly changed zoos into providers of insurance populations specifically for species at risk of extinction.They have al
This study aims to explore the leadership of Indah Putri Indriani as a regent within the North Luwu Regency Government in the process of compassionate leadership in facing the challenges of the Corona Virus Disease 2019 (COVID-19) in North Luwu Regency.This research method is exploratory-qualitative with a phenomenological approach in exploring the