In order to determine the method of contact surface treatment and to define the rational surface roughness in the wheel/rail contact for the minimal growth rate of contact fatigue defects the program of experiments in operational conditions was developed.On the basis of the results and calculations the coefficients of regression equations, which de

This essay argues that Willa’s Cather’s The Song of the Lark (1915) approaches the novel as an acoustic archive, a textual space for sound preservation.While the novel proves the author’s early and sustained interest in recording the American West’s diverse cultures and socially marginalized groups, it Goalie - Pads - Junior also proclaims

According to the different effects of biological and chemical control, we propose a model for Holling I functional response predator-prey system concerning OREGANUM PLUS pest control which adopts different control methods at different thresholds.By using differential equation geometry theory and the method of successor functions, we prove that the

Laces Linear tool path is widely used in high-speed NC machining.However, the geometrical discontinuity of the corner between the linear tool paths will lead to fluctuations in speed, acceleration and jerk, which can excite machinery vibration and reduce the machining efficiency and surface quality.To solve these problems, a novel corner smoothing

Stellar analogs for the solar wind have proven to be frustratingly difficult to detect directly.However, these stellar winds can be studied indirectly by observing the interaction regions carved out by the collisions between these winds and the interstellar medium (ISM).These interaction regions are called "astrospheres", analogous to the "heliosph