In order to reduce the occurrence of drilling accidents in soft coal Fondust seams, this paper analyzes the causes of near-horizontal hole drilling under the coal mine and the formation process of jamming, and establishes a drilling mechanical model for each stage.Through the analysis of the main influencing factors of the sticking drilling, it is
The use of hexamethyldisiloxane (HMDSO) as an oxygen source for the growth of p-type silicon-based layers deposited by Makeup Set Plasma Enhanced Chemical Vapor Deposition is evaluated.The use of this source led to the incorporation of almost equivalent amounts of oxygen and carbon, resulting in microcrystalline silicon oxycarbide thin films.The la
By considering the exclusion characteristics of foreign objects in a new intake system with a bypass duct for turboprop engines, two kinds of common rigid foreign objects, the grains, and metal pieces, are modeled based on airworthiness standards and reference reports.On the assumption that only a perfect elastic collision occurs without any struct
This paper constructs the numerical solution of particular type of differential equations called fuzzy hybrid retarded delay-differential equations using the method of Runge-Kutta for fourth order.The concept of fuzzy number, hybrid-differential equations, Waterproof Gloves and delay-differential equations binds together to form our equations.An ex