This work focuses on moisture effects mechanical properties of GFRP-balsa sandwich structure experimentally and numerically. Firstly, relationships between Moisture Content (MC) Acoustic Emission (AE) wave velocity have been demonstrated by Hsu-Nielsen tests during the water immersion tests. And then, a new methodology was proposed to predict elastic modulus skin wet based relationship MC, AE m...

The variable stiffness exosuit has great potential for human augmentation and medical applications. However, the model of mechanism in exosuits is far from satisfactory accurate prediction control friction force. This paper presents a lower limb exosuit, verifies its performance, identifies applicability. force was established by Coulomb hypothesis. equivalent coefficient, which core parameter ...

The critical exponents for T → 0 of the two-dimensional Ising spin-glass model with Gaussian couplings are determined with the help of exact ground states for system sizes up to L = 50 and by a Monte Carlo study of a pseudo-ferromagnetic order parameter. We obtain: for the stiffness exponent y(= θ) = −0.281±0.002, for the magnetic exponent δ = 1.48±0.01 and for the chaos exponent ζ = 1.05 ± 0.0...

BACKGROUND Ischemic leukoaraiosis (ILA) is associated with cognitive decline and aging. Its pathophysiology is believed to be ischemic in origin due to its association with cerebrovascular risk factors and similarity in location to lacunar infarctions. ILA diagnosis is still based on magnetic resonance imaging (MRI) as well as exclusion of other causes of white matter hyperintensities. So far, ...

TOWNSEND LETTER – MAY 2010 This article explores an exciting, noninvasive, easy-to-use, and economical method of assessing patients’ cardiovascular physiologic status that is backed by more than 25 years of advanced research in medical physics. A 2007 Clinical Medicine article points the way to better clinical treatment of CVD, stating: “Arterial stiffness measured by pulse wave velocity (PWV) ...

A large number of researchers have studied the behavior of infilled frames. It is evident through their studies that infill walls can provide both an economic and practical means for the lateral stability of framed structures and a viable alternative for retrofitting existing structures to resist seismic, wind, and blast loads. Despite this, there is reluctance from the engineering community to...

INTRODUCTION The aim of our study was to evaluate visit-to-visit blood pressure variability (BPV) and the association of this parameter with cardiovascular risk determinants, according to the SEPHAR II survey. METHODS Following a selection based on the multi-stratified proportional sampling procedure, a total of 1975 subjects who gave informed consent were evaluated by means of a questionnair...

Friction in joints significantly contributes to the observed overall damping of mechanical structures. Especially if the material damping is low, the frictional effects in joints and clamping boundary conditions dominate the structural damping. The damping and the stiffness of the structure are nonlinear functions of the system states and consequently of the excitation signal and amplitude. If ...

BACKGROUND Ventricle material properties are difficult to obtain under in vivo conditions and are not readily available in the current literature. It is also desirable to have an initial determination if a patient had an infarction based on echo data before more expensive examinations are recommended. A noninvasive echo-based modeling approach and a predictive method were introduced to determin...