Abstract A fast effective inversion algorithm is proposed herein to interpret gravitational responses caused by mineralized/ore sources (sphere, vertical and horizontal cylinders). The relies on local wavenumber correlation imaging techniques. factor ( R ) between the of observed field that computed was calculated, maximum max considered correspond best true model (parameters). applied two theo...

The risks of ferromagnetic compressed gas cylinders becoming projectiles in an MR environment are well known (12). The recent death of a child from such an incident reinforces the potential for disaster (3).

The stability of viscous flow between rotating cylinders in the presence of a constant axial magnetic field is considered. The boundary conditions for general conductivities are examined. It is proved that the Principle of Exchange of Stabilities holds at zero magnetic Prandtl number, for all Chandrasekhar numbers, when the cylinders rotate in the same direction, the circulation decreases outwa...

in this paper, first design and analysis history of full metal cng cylinders for vehicle are investigated. next with respect to the cng worldwide standards, a full metal type cylinder is designed and analysed. then the numerical analysis results and practical results are compared, and the correctness of the investigation is verified. in the end, the most suitable alloy with respect to the dimen...

In this paper, free and forced vibration analysis of functionally graded material cylinders was carried out by mesh-free and finite element method. In this analysis, MLS shape functions are used for approximation of displacement field in the weak form of motion equation and essential boundary conditions are imposed by transformation method. Resulted set of differential equations are solved usin...

This contribution presents a new tester for tunnel lining segments in the final serviceability load stage. It aims to concentrate resources of testing laboratories on single segment capturing most real conditions present tunnels. Its variability is presented, that is, geometrical and mechanical configurations it can adapt to. performance validated by means prototype test conventionally reinforc...

An infinite row of periodically spaced, identical rigid circular cylinders is excited by an acoustic line source, which is parallel to the generators of the cylinders. A method for calculating the scattered field accurately and efficiently is presented. When the cylinders are sufficiently close together, Rayleigh–Bloch surface waves, which propagate energy to infinity along the array are excite...

This paper describes an underwater object discrimination system applied to recognize cylinders of various compositions from diierent angles. The system is based on a new combination of simulated dolphin clicks, simulated auditory lters and artiicial neural networks. The model demonstrates its potential on real data collected from four diierent cylinders in an environment where the angles were c...

We investigate the errors associated with the use of circular cylinders as surrogates for hexagonal columns in computing the optical properties of pristine ice crystals at infrared (8-12-microm) wavelengths. The equivalent circular cylinders are specified in terms of volume (V), projected area (A), and volume-to-area ratio that are equal to those of the hexagonal columns. We use the T-matrix me...

in this paper, the effects of carbon nanotube (cnt) orientation and aggregation on the static behavior of functionally graded nanocomposite cylinders reinforced by cnts are investigated based on a mesh-free method. the used nanocomposites are made of the straight cnts that are embedded in an isotropic polymer as matrix. the straight cnts are oriented, randomly or aligned or local aggregated int...