An automated process for the delineation of drainage basins, using as input only the vector based drainage network, is described which provides an alternative to DEM based methods. The procedure involves an approximation of the line Voronoi diagram for the network using a constrained Delaunay triangulation of the network's Planar Straight Line Graph. The constrained triangulation, which include...

We posed six clinical questions (CQ) on preoperative biliary drainage and organized all pertinent evidence regarding these questions. CQ 1. Is preoperative biliary drainage necessary for patients with jaundice? The indications for preoperative drainage for jaundiced patients are changing greatly. Many reports state that, excluding conditions such as cholangitis and liver dysfunction, biliary dr...

National design guides provide essential guidance for the of building drainage systems, which primarily ensure basic objectives preventing odor ingress and cross-transmission disease through water-trap seal retention. Current system only extend to buildings 30 floors, while modern tall frequently over 100 exceeding predictive capability current in terms operating conditions. However, same are b...

due to the important role of subsurface drainage in managing the ground water level, there are many researches focused on finding a new and more economic way to develop subsurface drainage technologies. lack of proper drainage system in northern iran has caused huge implantation of rice and it is impossible to have second implantation in this region. one reason of insufficiency of current drain...

Current treatments for glaucoma are not fully satisfactory. This thesis examines the possibility of improving one of those treatments – the use of a drain in the eye. The goal of the thesis is to increase the likelihood that improved treatments for glaucoma become available at an early date by the use of microsystems engineering. Glaucoma is a serious and common disease of the eye, most often c...

BACKGROUND Infants with isolated totally anomalous pulmonary venous return often present severely decompensated, such that they are at high risk for surgical repair. On the other hand, if surgical repair can be safely accomplished, the outlook is usually good. Thus prenatal diagnosis would be expected to improve the prognosis for the affected child. OBJECTIVE To describe the features of isola...