BACKGROUND This study aimed to assess myocardial performance index (MPI) and arterial elasticity indices in asymptomatic patients with beta-thalassemia major without known heart disease and to determine relationship between these indices and parameters indicating iron load of body. METHODS The study included 55 asymptomatic beta-thalassemia patients (median age: 20 years (10 - 48 years)) with...

Cloud computing is now a well-consolidated paradigm for on-demand services provisioning on a pay-as-you-go model. Elasticity, one of the major benefits required for this computing model, is the ability to add and remove resources “on the fly” to handle the load variation. Although many works in literature have surveyed cloud computing and its features, there is a lack of a detailed analysis abo...

PURPOSE To gain further insight into a possible role of biomechanical cues in glaucoma, the authors assessed the influence of extracellular matrix (ECM) elasticity on TGF-β2-induced changes in trabecular meshwork (TM) cells. METHODS Human TM cells derived from donor cornea rings were plated on rigid collagen-coated tissue culture plastic or polyacrylamide gels of different elasticity and trea...

Two mathematical models are developed within the theoretical framework of large strain elasticity for the determination of upper and lower bounds on the total strain energy of a finitely deformed hyperelastic body in unilateral contact with a rigid surface or with an elastic substrate. The model problems take the form of two continuous optimization problems with inequality constraints, the solu...

An equation was developed from studies of single-pass wear and fracture toughness of filled and unfilled dental restorative resins and dental amalgams relating the sliding frictional force F to the normal load N, fracture toughness, modulus of elasticity, yield strength and slider diameter. This equation was of the same form as that reported for viscoelastic materials (F = KW). Friction was cau...

The normal stresses developed within a mass of flesh subject to various types of loading are examined theoretically. Using a simplified model of flesh possessing a definite modulus of elasticity and Poisson's ratio, static compressive stress values at various locations are determined. Formulas and numerous worked examples are given. The characteristics of load-transfer members including rigid b...

Methods ........................... 185 Spontaneous movements ..................... 188 The single contraction ..................... 192 Summation of contractions and tetanus ................ 193 The effect of the constant current .................. 195 The influence of temperature ................... , 199 1. On the tone of the bladder muscle ............... 199 2. On the form of the contracti...

It was previously suggested that the mechanical properties of the fingertip could be characterized by elasticity from dc to about 100Hz and by viscosity above this frequency. Using a specifically designed high mobility probe, we accurately measured the impedance of the fingertips of seven participants under a variety of conditions relevant to purposeful touch. Direct measurements vindicated pre...

Stress analysis plays a significant role in the design of parts and structures that must carry load [1]. In this study, Crane hook which is one of lifting equipment, frequently used in material handling is investigated. Analytical (Straight beam, curved beam & Winkler-Bach approximation), experimental (Photo-Elasticity) and numerical (FEM) methods were used by various researchers to study stres...

DBMSs powering cloud application platforms must serve large numbers of applications with unpredictable load patterns while minimizing the operating cost leveraging the underlying pay-per-use infrastructure. We have designed ElasTraS, an Elastic TranSactional relational database for cloud platforms. ElasTraS is a confluence of two major design philosophies: traditional relational database system...