background: pancreatitis is most common complication of post-ercp and needs to admission at least for one day. the purpose of this study was to assess the efficacy of guide wire for better common bile duct (cbd) cannulation for reducing post-ercp pancreatitis. methods: from april 2010 through march 2011, the patients who needed ercp and referred to shahid beheshti and rouhani teaching hospital ...

in recent years reflectarray antennas have received considerable attention due to their unique capabilities. however, due to their large size, analyzing the performance of these antennas using traditional full wave finite-difference and finite-element techniques requires considerable computational resources. in this paper, we present an efficient method to accurately analyze these class of ante...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : distraction osteogenesis is an established option for reconstruction of amputated fingers. in contrast to the primary method of distraction osteogenesis, using kirschner wire (k-wire) as an internal fixator is not common today. this study was conducted to evaluate distraction osteogenesis with and without k-wi...

conclusions we found the magnetic field assistant device to be an accurate, radiation-independent jig for close passing of guide wire after close reduction of femoral fracture. it can reduce the need for radiation during placement of guide wire for closed intramedullary nailing of the long bones. more studies are required to improve and evaluate the technique and equipment. results outcomes of ...

This paper presents an experimental investigation into the compression behavior of shape memory alloy hybrid composites (SMAHC) subjected to quasi-static loading taking into account of rotation effects of shape memory wire in basalt continuous filament (BCF) direct roving epoxy composite. Two types of specimen prepared, the BCF direct roving reinforced epoxy composite filled with shape memory w...

Electromagnetic metamaterial is an artificial material that made up of different types structural designs on dielectric substrates. In this paper a broad and elite investigation being carried out by designing simulating cell comprising square split ring resonator with copper wire strip etched the ground plane to discover its some unusual parameters such as double negativity which are naturally ...

In this work, we introduce a conceptually new approach for designing frequency reconfigurable wire antennas based on the use of multi-layered wrapping metasurfaces. Specifically, demonstrate that complex-valued input impedance antenna can be tailored by engineering electromagnetic characteristics coating metasurface and discuss how effect exploited achieving wide-band reconfigurability. We repo...

detection of stealth targets calls for employment of high-power radars which itself relies on usage of high-gain antennas like large parabolic reflectors. in the past few years, using of an array with many small reflectors instead of a large reflector antenna has been considered. this method provides enhanced eirp by a factor of n2 where n is the number of array antennas. regarding improvement ...

Background: Direction finding (DF) based on MUSIC algorithm has been studied and implemented in the wireless communications lab. Simulation results, measurement setup are shown in the figures below. Most of the direction finding (DF) algorithms require multiple antennas with at least í µí¼†/2 spacing. Also, performance of the DF algorithms mainly relies on  Number of antennas in the antenna ar...