Wen and colleagues use a non-calibrated creatinine concentration to estimate glomerular filtration rate (GFR). Even if such non-calibration has little importance for mortality linked to CKD, it could have serious consequences on prevalence data. 2 These prevalence data are thus not easy to compare with those of the US population, for which the newly expressed Modification of Diet in Renal Disea...

The coupling with external mechanical systems such as oscillating masses working tuned mass dampers, dynamic absorbers, elasto-plastic and rigid walls is an effective method to reduce the displacements drifts of structures under loads. An alternative provided by structure independent, auxiliary system. This paper investigates seismic behaviour a rigidly coupled yielding system harmonic ground e...

This article proposes a method to precisely estimate the load force of magnetic lead screw (MLS)-based series elastic actuators (SEAs) in real time. The transmissions MLS-based SEAs generally comprise permanent magnets (PMs). Owing pole distortion and characteristic nonlinear PMs, conventional estimation methods are less accurate for than with mechanical springs. In proposed method, MLSs, an ML...

The collaborative robot market has experienced rapid growth, leading to advancements in compliant actuation and torque control. Magneto-rheological (MR) clutches offer a hardware-level solution for achieving both compliance control through adjustable coupling between the input output of MR clutch. However, presence frequency-dependent magnetic hysteresis makes controlling challenging. In this p...

Abstract The work describes experiments and models related to auxetic (negative Poisson’s ratio) foams subjected low-frequency variable amplitude 3-point bending loading. A custom vibration test rig is designed used perform the dynamic of PU foam beams within range (1–20 Hz) 5 different displacement amplitudes. tested in this are manufactured using a simplified relatively low-cost uniaxially th...