The safety production little boys tees pressure in coal mines is huge, and there is a general phenomenon of over-supporting in roadways.Even hard and dense thick limestone roofs do not dare to be unsupported.1102 track roadways of Qiuji Coal Mine is taken as the engineering background, by constructing a hard roof deformation analysis model, quantif
The current trend of globalization of the world economy necessitates the use of high-tech developments and innovations that allow achieving strategic goals at the national, regional, and sectoral levels.The prerequisites of the study are determined by the urgency of finding solutions to problematic issues of formation and implementation of priority
Abstract Higgsinos and little boys tees Winos in the supersymmetric Standard Model are prime candidates for dark matter due to their weakly interacting nature.The mass differences between their charged components (charginos) and neutral components (neutralinos) become degenerate when other superparticles are heavy, resulting in long-lived charginos
A micro-fiber-optic Fabry-Perot interferometer (FPI) is proposed and demonstrated experimentally for ultrasonic imaging Huperzine (Huperzin) of seismic physical models.The device consists of a micro-bubble followed by the end of a single-mode fiber (SMF).The micro-structure is formed by the discharging operation on a short segment of hollow-core fi