Natural Seismic Event Analysis Based on Signal and Source Characteristics from two Experiments in Antarctica.

This study presents geophysical data from two passive seismic measurements conducted at two different sites in Antarctica. We analyzed the signals mainly in the frequency domain through the multitaper method to extract some spectral characteristics of the signals that would have been out of reach through the usual FFT approach. The power spectral density of the signals carries information about the processes that generated them, allowing its correlation with their source origin and type, either natural or anthropogenic.

A firn dielectric log depth-tied to an ice core on the West Antarctica Ice Sheet.

We have estimated a 1-D permittivity model from a 100m long variable offset GPR in the West Antarctic ice sheet. That model inherits the inaccuracies in depth from the velocity model, which should be corrected before attempting to correlate it with the density log from a close-by borehole. We performed that correction by aligning a synthetic ice density derived from a Maxwell Garnett two-phase mixture model to the ice core density measurements through dynamic time warping.

Obturator hernia: a rare cause of bowel obstruction.

An obturator hernia is a rare condition and an unusual cause of intestinal obstruction. With a challenging diagnosis, it has one of the highest mortality rates of all abdominal wall hernias. The authors present a case of an elderly woman with bowel obstruction secondary to an incarcerated obturator hernia.

Laparoscopic ureteral replacement by Boari flap: multi-institutional experience in 30 cases.

Introduction: The Boari flap is an excellent technique for replacement of distal ureteral injuries. There are few reports with the use of laparoscopic surgery, especially with long term results. Our goal is to present the results of a multi-institutional study of 30 cases.

Bilateral nerve-sparing extraperitoneal visual laser ablation radical prostatectomy: potency rates after 1 year follow up.

Purpose: Wide variations exist in the methods for reporting potency following radical prostatectomy. In this group we used a validated questionnaires pre and post operatively to access relative return to normal sexual function after bilateral nerve-sparing visual laser ablation radical prostatectomy (VLAP).

Materials And Methods: One hundred and twenty four patients with ages ranging from 45 to 70 years old were evaluated in the period between January 2004 and March 2007.