SOLUTION AND ANALYSIS OF THERMAL ELASTOHYDRODYNAMIC LUBRICATION MODEL FOR TOOTH AND SLIDING RING COMBINED SEAL

Combined with the high pressure and high temperature working condition and the characteristics of tooth and sliding ring combined seal, the mathematical model of the rotating slip ring type combined seal is established based on the theory of thermoelastic hydrodynamic lubrication.Furthermore, the elastic deformation of the tooth and sliding ring co

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The Emerging Promise of Business EcoSystems

This article highlights the relevance of new business models and ecosystems in the knowledge-era economy.We begin with an introduction then argue that the shift in dog food what is valued drives the need for new business models.The third section provides examples of innovative business models.The fourth section describes two key roles in an ecosyst

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