OBJECTIVE To evaluate the safety, efficacy, and recurrence of pterygium following 90 degrees versus zero degrees and 180 degrees rotation autograft for treating primary pterygium. METHODS We included in this observational, prospective, and comparative study, 74 patients (47 males, 27 females) with advanced primary pterygium, with a mean age of 47.5 years (range 19-79 years). This study was co...

In the performance of a transvascular liver biopsy, the Trucut-type transjugular liver biopsy set is advance over a multipurpose catheter place in the suprahepatic vein. Occasionally there is a sharp bend between the suprahepatic veins and the inferior vein cava and the multipurpose catheter does not provide sufficient support to track the biopsy access set. To deal with this problem we describ...

In the early embryo the allantois, which lies in the body stalk, is situated at the hind end of the foetus and is at first meirely a continuation of the hind gut. As growth proceeds, the hind end of the embryo assumes a curvature and the allantois and body stalk are displaced ventrally. The differentiation of the allantois and hind gut is now easy to see and the sharp bend between the two becom...

We present a novel way to draw planar graphs with good angular resolution. We introduce the polar coordinate representation and describe a family of algorithms for constructing it. The main advantage of the polar representation is that it allows independent control over grid size and bend positions. We first describe a standard (Cartesian) representation algorithm, CRA, which we then modify to ...

Much work on orthogonal graph drawing has focused on 4-planar graphs, that is planar graphs where all vertices have maximum degree 4. In this work, we study aspects of the Kandinsky model, which is a model for orthogonal graph drawings of higher-degree graphs. First, we examine the decision problem β-Embeddability, which asks whether for a given planar graph with a fixed or variable embedding, ...

In this work, many ways of communications are used between human and computer, while using gesture is considered to be one of the most natural way in a virtual reality system. Because of its intuitiveness and its capability of helping the hearing impaired or speaking impaired, we develop a gesture recognition system. The Hand Talk glove is a normal, cloth driving glove fitted with flex sensors....

Background and Purpose: Numerous holmium:yttrium-aluminum-garnet laser fibers are available for flexible ureteroscopy. Performance and durability of fibers can vary widely among different manufacturers and their product lines with differences within a single product line have been reported. We sought to evaluate a newly developed nontapered, single-use 240-lm fiber, Flexiva 200 (Boston Scientif...