Aiming at the problems such as low efficiency and depth limit of directional drilling caused by the support pressure of drilling tools in the directional drilling of ultra-deep hole in underground coal mine, learning from the twist drilling technology in oil drilling, feline 1-hcpch vaccine this paper analyzes the technological principle, the adapt
Background: Pancytopenia is a manifestation of a wide range of disorders.The main prognostic factor for predicting outcome and response to treatment is based on the underlying cause.To detect the root cause of this problem, depending on other accompanied signs verona wig or symptoms, the need for bone marrow examination and other advanced work ups
During breathing, the human thorax is expanded or contracted during inspiration and expiration.The morphology of the thorax seems to be determinant for endurance efforts.This study aims to analyse the variation of the thorax cross-sections during running exercises at different intensities and the influence of thorax morphology.Twenty-two athletes w
The use of electric buses has a great effect on reducing traffic and air pollution.The purpose of this article was to examine the challenges facing the country to produce and benefit from this product and solutions to solve these challenges.In this research, data was collected through documentary studies and in-depth semi-guided interviews and anal