Research on Temperature Rise Characteristics Prediction of Main Shaft Dual-Rotor Rolling Bearings in Aircraft Engines

Traditional aero-engine bearings rotate simultaneously with their inner and outer rings, which makes the temperature rise prediction model computationally large with low accuracy, and it cannot be accurately verified due to the means of testing.This paper presents a method for predicting the temperature rise characteristics of aero-engine bearings

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Facial dermatosis papulosa nigra, a risk for the development of pterygium and myopia: a descriptive cross-sectional study in Ghana

Background.Dermatosis papulosa nigra (DPN) affects sun-exposed areas such as the face, neck, and trunk.The prevalence of pterygium and myopia in DPN patients in Ghana has not been studied.In this study, we examined the risk and protective factors for pterygium and myopia in DPN patients.Materials and Methods.The study involved 100 participants with

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