The bed rock of shallow-buried depth coal seam is relatively thinner and the loose layer is thicker, the working face is easy to appear step subsidence and other conditions, and mine rock pressure is severe.The two-prop shield caving hydraulic support used in the working face of shallow buried depth coal seam is prone to insufficient working resist
The behavior of beam-to-column connections significantly influences the stability, strength, and stiffness of steel structures.This is particularly important in extreme non-elastic responses, i.e., earthquakes, and sudden column removal, as the fluctuation in strength and Leather Bag stiffness affects both supply and demand.Accordingly, it is essen
The oropharynx as a functional entity plays a fundamental role in feeding.Transitions from aquatic to terrestrial lifestyles in vertebrates demanded major changes of Intimates the oropharynx for the required adaptations to a different feeding environment.Extant turtles evolved terrestrial feeding modes in three families (testudinids, emydids, geoem
Abstract Conversion of heterotrophic organisms into partially or completely autotrophic organisms is primarily accomplished by extensive metabolic engineering and laboratory evolution efforts that channel CO2 into central carbon metabolism.Here, we develop a directed endosymbiosis 70s Straight Ass Rip approach to introduce carbon assimilation in bu