in this paper, the effect of autofrettage process parameters on the ultimate pressure that functionally graded spherical vessel can tolerate are investigated. fgm properties and autofrettage pressure are considered as important parameters. assumptions are variation of properties of fgm in radial direction, the residual stress in the absence of bauschinger effect with the operation of variable m...

relutionshi~ of vascular smooth muscle. Am. J Physiol. 2 2 5 (3) : 664-670. 1973.-Segments of dog carotid artery were excised, cannulated, and restored to in situ length. They were immersed in a KrebsRinger bath and inflated with 100% 02 under nonoscillating pressures. Diameter was continuously monitored with a linear displacement transducer. The vessel segments were relaxed, then treated with ...

Tissue deformation in ultrasound (US) imaging leads to geometrical errors when measuring tissues due the pressure exerted by probes. Such has an even larger effect on 3D US volumes as correct compounding is limited inconsistent location and geometry. This work proposes a patient-specified stiffness-based method tissue deformations robotic acquisitions. To obtain model, palpation performed at sa...

In this study, stress and displacement functions of the three-dimensional theory of elasticity for homogeneous isotropic bodies are derived from first principles from the differential equations of equilibrium, the generalized stress – strain laws and the geometric relations of strain and displacement. It is found that the stress and displacement functions must be biharmonic functions. The deriv...

The article presents a method for calculating the mass load determining displacement of passenger trimaran vessels at initial stages design. state this issue has not been sufficiently studied to date, since there is no methodology that allows vessel. field research design vessels, in particular and purpose determine components total equations masses ships statistical dependencies are given, as ...

background: centre of pressure displacement is an indicator of postural control. children with cerebral palsy have poor postural control. one common intervention to enhance their balance is vestibular stimulation. the aim of this research was to investigate the effect of vestibular stimulation on cop parameters in children with cerebral palsy (3-10 years old). methods: this study was a randomiz...

Displacement-based methods are recognized as appropriate approaches to reach the goals of performance-based seismic design method. In the direct displacement-based seismic design method, the seismic yield displacement is applied as one of the important design parameters. In this paper, a new relation is suggested to determine the lateral displacement pattern at first yielding of eccentrically b...

results in all groups ischemic changes were apparently observed in hippocampus ca1 neurons. in two-vessel occlusion model, after 3 and 24 hours of reperfusions, ischemic cells accounted for 14.9% and 23.2%, respectively. in four-vessel occlusion model, after 3 and 24 hours of reperfusions, ischemic cells accounted for 7.6% and 44.9% (p < 0.0001), respectively. background an appropriate animal m...

Counter-current imbibition in one dimension is analyzed, in which a wetting phase (water) displaces a non-wetting phase against gravity. An approximate analytical approach is used to derive an expression for the saturation profile in the case where the mobility of the displaced phase at the inlet is finite. This approach is applicable to waterflooding in hydrocarbon reservoirs, flow in geotherm...

The motion of phase-separating liquid drops was simulated in two dimensions following the model H, where convection and diffusion are coupled via a body force, expressing the tendency of demixing systems to minimize their free energy. This driving force depends on the capillary number, i.e., the ratio of viscous to thermal forces, which in a typical case is of order 10(-4), inducing a convectiv...