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Abstract Background A series of nonlinear finite element (FE) analyses was performed to evaluate the different design approaches available in literature for reinforced concrete deep beam with large opening. Three models were developed and analyzed using computer software ATENA. The three FE beams made details based on approaches: (Kong, F.K. Sharp, G.R., Magazine Concrete Res_30:89-95, 1978), (...

Delayed endograft metallic strut failures detected in vivo with multidetector row computed tomography (MDCT) are reported in two patients who underwent endovascular abdominal aortic aneurysm repair with AneuRx and Talent endografts. In both instances, nitinol fractures were associated with proximal migration and type I endoleak. In both cases, the metallic strut fractures were detected with tra...

Using the notion of thermodynamic length, first law thermodynamics is consistently derived for two binary configurations equal Kerr-Newman black holes separated by a massless strut. Like in electrostatic systems Reissner-Nordstr\"om and stationary vacuum Kerr considered earlier, length $\ell$ turns out to be defined same simple formula $\ell=L\exp(\gamma_0)$, $L$ being coordinate strut $\gamma_...

BACKGROUND Re-establishing nasal tip projection is one of the main objectives in secondary rhinoplasty. The columellar strut is used as a basic element for support and the septal cartilage graft as the first choice for reconstruction. Nevertheless, the septal cartilage is often missing in this category of patient because of previous surgery, obliging the surgeon to seek a safe, effective, and v...

BACKGROUND Nasal tip support is an essential consideration for rhinoplasty in East Asians. There are many techniques to improve tip projection, and among them, the columellar strut is the most popular technique. However, the conventional design is less supportive for rotating the tip. The amount of harvestable septal cartilage is relatively small in East Asians. For an optimal outcome, we propo...

The objective of this review to be submitted in two independent parts, for steel frames and for RC frames, is to compare their structural performance with respect to the proposed N2-method, and so also of the consequent convenience of using pushover methodology for the seismic analysis of these structures. A preliminary investigation is presented on a pushover analysis used for the seismic perf...

BACKGROUND Echocardiographic imaging of a stented valve bioprosthesis can reveal apparent inward deflection of one or more struts. It could be assumed that this finding is related to actual strut distortion as opposed to an artifact of off-axis imaging. OBJECTIVE To determine whether normal (nondistorted) bioprosthetic struts can appear by artifact to be bent inward on two-dimensional echocar...

BACKGROUND Rhinoplasty is one of the most challenging esthetic surgeries. The ability to achieve precise and predictable changes in the shape and position of the nasal tip is still among one of the demanding areas of rhinoplasty. Columellar strut is one of many techniques to ensure an adequate nasal tip projection and rotation; however, there is little evidence to support long-term efficacy of ...