An implant for use in spinal surgery comprises a resilient element having an inflatable cavity. One point on the calibration curve is the x-intercept value in a sample effective for causing the sample to reach tThreshold substantially instantaneously upon commencement of incubation). While applying the magnetic field, the melt is cooled at a rate of about 30\xb0 C. This strap holder for a mobile device has a compact and high-strength structure. As the base assembly is drawn into the handle, by rotation of the handle about the post of the base assembly, the mandrel receives the clamp end of the post, with an upper free surface thereof engaging the clamps for pivoted closure about a portion of the weapon in furtherance of securing the weapon grip assembly thereto.