this study was designed to develop a modified tbi weight drop model for induction of focal mild cerebral injury. a stereotaxic coupled weight drop device was designed. principle arm of device carries up to 500g weights which their force was conveyed to animal skull through a thin nail like metal tip. to determine the optimal configuration of the device to induce mild tbi, six different trials w...

background: the transcatheter closure of the atrial septal defect (asd) has become an alternative technique to surgical procedures . the aim of this study was to assess the immediate, short, and intermediate-term results of the transcatheter closure of the secundum asd with the amplatzer septal occluder (aso) in adult iranian patients. methods: between december 2004 and july 2008, the transcath...

The conventional direct device discovery scheme which uses the random access protocol and encounters contentions or collisions is highly energy time-consuming. To reduce consumption of user equipments (UEs), this work proposes a two-phase hybrid mechanism for device-to-device (D2D) communications. In first phase, evolved packet core (EPC) base station (BS) location information UEs to judge whet...

conclusions despite the complications of fixation with the dhs device, it remains the most successful for treatment of intertrochanteric fractures. background according to the existing literature, the dynamic hip screw (dhs) is the preferred standard for the treatment of intertrochanteric fractures. however, some surgeons use other devices such as the locking compression plate (lcp). objectives...

rolling-based seismic isolation systems, in which rollers of circular or non-circular section are used, are less expensive and easier to manufacture. however, this type of isolation suffers from either lack of restoring or re-centering capability, or weakness against uplift forces. to resolve the first shortcoming the use of elliptical as well as pillow-shape rolling parts has been suggested, a...

An innovative Volumetric Current Meter (VCM) was designed in order to allow quick velocity measurements in open channels. At first, the coefficient of velocity (Cv) of the device was determined through calibration under different water velocities in the laboratory. The measurement performance was verified by measurements performed in similar flows in irrigation channels using an ordinary curren...