Prior anechoic measurements of a small acetylene-oxygen balloon explosion were used to study spherical weak-shock decay over short ranges [Muhlestein et al., J. Acoust. Soc. Am. 131, 2422-2430 (2012)]. Here, longer-range measurements conducted at the Bonneville Salt Flats with a larger balloon are described. Waveform and spectral characteristics and comparisons of the peak pressure decay with a...

This study was designed to develop a reversible middle cerebral artery (MCA) occlusion/reperfusion model in monkeys. By inserting a Cordis steerable guidewires balloon catheter (595-E014) from the femoral artery of 12 male adult monkeys (Macaca mulatta) weighting 5.5±0.5Kg, the balloon catheter could be inserted into the MCA and occluded the blood flow. Magnetic resonance T1, T2 and DWI showed ...

A ureteroiliac vein fistula was then diagnosed. Placement of an 8-F 24-cm double-J stent (Flexima ureteral stent; Boston Scientific) was successfully performed after the ureterogram was obtained. The ureteroiliac vein fistula was treated by inserting a 13-mm 5-cm fully covered VIABAHN stent-graft (W.L. Gore and Associates, Flagstaff, Arizona) into the right common iliac vein in the supine posit...

PURPOSE To compare and contrast the physical characteristics of balloon catheter systems used for temporary cerebrovascular occlusion. METHOD Commonly used temporary occlusion systems were evaluated to determine: (a) balloon compliance; (b) balloon diameter versus volume; (c) balloon pressure versus volume; (d) simulated vessel wall pressure versus volume; (e) balloon failure volume; and (f) ...

the conventional intervening opportunity model which is potentially a powerful analytical and probabilistic model, has been used in transportation planning to model trip distribution pattern. this model is basically suffering from two main limitations. these limitations are the assumptions that trip makers are fully aware of all available opportunities in the area and their trip lengths to all ...

a common belief is that alkali ingestion causes severe esophageal damage and limited gastric injury due to the buffering action of acid. gastric injury has been observed in patients who ingested alkali. gastric outlet obstruction (goo) secondary to caustic ingestion occurs due to fibrosis after resolution of the acute injury and inflammation, most commonly 6 to 12 weeks after initial ingestion....

OUR STUDENTS have a robust, innate propensity and desire to learn and to actively assimilate knowledge. They are naturally curious, with powerful intrinsic motives to understand their world. Accordingly, we, as teachers, must capitalize on this inherently active and curious nature so that learning becomes a joy and an activity to be sought out. By capitalizing on our students’ inherent curious ...