Purpose: To present photorefractive keratectomy (PRK) results for myopia ranging from -4,00 to 6,00 diopters performed with the VISX and Summit excimer lasers. Methods: To be eligible for this study, patients had to be 20 to 45 years of age, have -4.00 to -6.00 diopters of myopia and have no more than 1 D of astigmatism. The Summit group was composed of 51 eyes. The baseline preoperative spheri...

BACKGROUND Ventricular arrhythmias (VAs) originating from the left ventricular summit is a challenge for radiofrequency catheter ablation (RFCA). The present study aimed to investigate the appropriate RFCA strategy for VAs originating from the left ventricular summit. METHODS Forty-five consecutive patients with VAs arising from the left ventricular summit were successfully ablated at our car...

OBJECTIVE To determine the incidence of acute mountain sickness (AMS), the frequency of summiting success, and the factors that affect these in trekkers on Kilimanjaro, one of the world's most summitted high-altitude peaks. METHODS The study group comprised 312 trekkers attempting Mt Kilimanjaro summit by the Marango Route. Trekkers ascended over 4 or 5 days along a fixed ascent profile, stop...

The United Nations Foundation's Girl Up campaign, an initiative dedicated to promoting the health, education, and leadership of adolescent girls in developing communities around the world, hosted its annual Girl Up Leadership Summit in Washington, DC from July 11-13, 2016. The summit welcomed more than 275 girl empowerment and women empowerment proponents to take part in leadership training, li...

Forests of the South are very diverse and productive. Included among southern forests are the boreal sprucefir forests of the highest mountain peaks of the Blue Ridge Mountains to the lowest bottomland hardwoods on flood-deposited soil with elevations near sea level. In between are the diverse upland hardwood stands in northerly mountainous areas of the South and southern pines and hardwnocls a...

In this article we describe the summit sets in B3, the smallest element in a summit set and we compute the Hilbert series corresponding to conjugacy classes. The results will be related to Birman-Menesco classification of knots with braid index three or less than three.

The University of Alberta Press Between 1902 and 1930, Dominion Land Surveyor Morrison Parsons Bridgland spent nearly every summer mapping the mountains of Alberta and British Columbia, climbing many of Canada’s Rocky Mountains for the first time. This unheralded alpinist perfected phototopographical techniques to compile a series of mountaintop photographs to create accurate topographical maps...

Despite their relatedness, Dutch and German differ in the interpretation of a particular intonation contour, the hat pattern. In the literature, this contour has been described as neutral forDutch, and as contrastive forGerman. A recent study supports the idea that Dutch listeners interpret this contour neutrally, compared to the contrastive interpretation of a lexically identical utterance rea...