Existing numerical modeling techniques commonly used for electromagnetic EM exploration are bound by the limitations of approximating complex structures using a rectangular grid. A more flexible tool is the adaptive finite-element FE method using unstructured grids. Composed of irregular triangles, an unstructured grid can readily conform to complicated structural boundaries. To ensure numerica...

We present the detection of an absorption feature at = + E 8.77 0.06 0.05 keV in the combined X-ray spectrum of the ultraluminous X-ray source NGC 1313 X-1 observed with XMM-Newton and NuSTAR, significant at the 3σ level. If associated with blueshifted ionized iron, the implied outflow velocity is ∼0.2c for Fe XXVI, or ∼0.25c for Fe XXV. These velocities are similar to the ultrafast outflow see...

The local structural environment and the spatial distribution of iron and aluminum ions in sodosilicate glasses with composition NaFexAl1-xSi2O6 (x = 1, 0.8, 0.5 and 0) is studied by highresolution neutron diffraction combined with structural modeling using the Empirical Potential Structure Refinement (EPSR) code. This work gives evidence of differences in the structural behavior of Al and Fe, ...

The subsurface behaviour of Tc, a contaminant resulting from nuclear fuels reprocessing, is dependent on its valence (e.g., IV or VII). Abiotic reduction of soluble Tc(VII) by Fe(II)(aq) in pH 6–8 solutions was investigated under strictly anoxic conditions using an oxygen trap (<7.5 · 10 9 atm O2). The reduction kinetics were strongly pH dependent. Complete and rapid reduction of Tc(VII) to a p...

Cervical spinal cord injury is one of most devastating and most dangerous type of failure in modern medicine. From the other hand knowledge of forces, accelerations and muscle forces acting during accidents as well as results in tissue damage is highly limited. Information about accident circumstances can be collected by experimental crash-tests or by numerical modeling [1]. In the case of tiss...

*Correspondence: Demircan Canadinc, Rumeli Feneri Yolu, Sariyer, Istanbul, Turkey e-mail: [email protected] A multi-scale modeling approach was applied to predict the impact response of a strain rate sensitive high-manganese austenitic steel. The roles of texture, geometry, and strain rate sensitivity were successfully taken into account all at once by coupling crystal plasticity and finite e...

Braided composites have been used widely in many engineering fields where the high mechanical characteristics and light weight properties were important. In order to estimate the mechanical characteristics of the braided composites, the numerical technique is very effective to reduce the testing and production costs. However, if the architecture of fiber bundle is more complex such as 3-D braid...

The systematic application of uncertainty and reliability analysis to engineering structures of practical interest, requires the availability of powerful and efficient software, both for the FE modeling and for the uncertainty analysis. Ideally this software should seamlessly interface existing finite element codes, in order to harness the state-of-theart in finite element modeling and to facil...

Accuracy and run-time play an important role in medical diagnostics and research as well as in the field of neuroscience. In Electroencephalography (EEG) source reconstruction, a current distribution in the human brain is reconstructed noninvasively from measured potentials at the head surface (the EEG inverse problem). Numerical modeling techniques are used to simulate head surface potentials ...