In this article, we focus on utilising electrical impedance spectroscopy (EIS) for the assessment of global and contact impedances in roller bearings. Our primary objective is to establish a quantitative prediction of lubricant film thickness in elasto-hydrodynamic lubrication (EHL) and investigate the impedance transition from ohmic to capacitive ...
In flowering plants, two fertilization products develop within the limited space of the seed: the embryo and the surrounding nutritive endosperm. The final size of the endosperm is modulated by the degree of embryo growth. In Arabidopsis thaliana, the endosperm expands rapidly after fertilization, but later gets invaded by the embryo that occupies ...
Millesimo, M.Borga, M.Valentini, L.Bakeroot, BenoitPosthuma, N.Vohra, A.Decoutere, S.Fiegna, C.Tallarico, A. N.
This article reports an in-depth analysis of the ON-resistance drift (?R-ON) induced by storage/release mechanisms occurring in the buffer of GaN-on-Si power devices. The role of both stress condition (bias, temperature, and stress time) and buffer's epi-stack composition on ARON has been analyzed by means of back-gating cur-rent deep-level transie...
Several studies about the Lamb vector have led to the development of the vortex-force theory, a formulation able to predict the aerodynamic force in compressible flows and decompose it into lift, lift-induced drag and profile drag. In the present paper, the aim is to achieve a complete drag breakdown by decomposing the profile drag into viscous dra...