T freezing of water and melting of ice are among the most dramatic examples of phase transitions in nature. Melting ice accounts for everyday phenomena as diverse as the electrification of thunderclouds, in which the liquid layer on ice chunks facilitates the transfer of mass and charge during collisions between them; frost heave powerful enough to lift boulders from the ground (see PHYSICS TOD...

Objective: To reemphasize LIFT technique for fistula in ano with redefined inclusion and exclusion criteria developed by Thai surgeon Arun Rojanasakul & to standardize the procedure for our setting. Material & Method: A prospective observational study in 32 fistula in ano patients treated by LIFT technique from Sept 2011 to March 2013. Result: Fistula in ano healed primarily in all 32 patients ...

Functional capacity testing in the pre-employment or post-offer phase of recruitment is increasing in popularity as a preventative tool for controlling sprains and strains in the workplace. The purpose of this study is to determine the reliability of the JobFit System Pre-Employment Functional Assessment (PEFA) as a whole, or in parts, as a precursor for a validity study investigating the relat...

acoustic analysis of sounds produced during speech provides significant information about the physiology of larynx and vocal tract. the analysis of voice power spectrum is a fundamental sensitive method of acoustic assessment that provides valuable information about the voice source and characteristics of vocal tract resonance cavities. the changes in long-term average spectrum (ltas) spectral ...

INTRODUCTION: Numerous facelift techniques are employed across aesthetic surgeons, but all can be categorized according to the specific plane(s) of dissection. Regardless of the technique, nerve injuries are ubiquitously feared complications. The dissection plane has been implicated in the rates of nerve injuries, but little consensus exists on the exact relationship. Our aim was to perform a s...

abstract background: unstable pelvic fracture, a result of high energy antero-posterior compression injury, has been managed based on internal fixation and open reduction. the mode of fixation in unstable pelvic fracture has, however, been a subject of controversy and some authors have proposed a need to address the issue of partial breach of the pelvic ring elements in these injuries. this stu...

In the continuous gas lift operation, compressed gas is injected into the lower section of tubing through annulus. The produced liquid flow rate is a function of gas injection rate and injection depth. All the equations to determine depth of injection assumes constant density for gas based on an average temperature of surface and bottomhole that decreases the accuracy of gas lift design. Also g...