INTRODUCTION Centrilobular emphysema (CLE) is recognized as low attenuation areas (LAA) with centrilobular distribution on high-resolution computed tomography. The LAA often exhibit a variety of shape or sharpness of border. This study was performed to elucidate the relationship between morphological features of LAA and pathological findings in CLE. MATERIALS AND METHODS The inflated-fixed lu...

The first purpose of this paper is to propose a formulation of general area-preserving motion of polygonal curves by using a system of ODEs. Solution polygonal curves belong to a prescribed polygonal class, which is similar to admissible class used in the so-called crystalline curvature flow. Actually, if the initial curve is a convex polygon, then our polygonal flow is nothing but the crystall...

pancreatic diseases are known to be associated with complications such as pseudocyst and abscess. a pseudoaneurysm associated with pancreatitis may develop as well. the pseudoaneurysm may rupture into various parts of the gastrointestinal tract; the peritoneal cavity, or the retroperitoneum. we report two cases of hemosuccus pancreaticus admitted to our center in the past five years. one case w...

introduction sialolithiasis is the most common disease of salivary glands. sialography is particularly important for the assessment of the outflow tract and in diagnosing obstructive salivary gland lesions including calculi. case presentation we report on a 38-year-old female with sialolithiasis whom had wharton’s duct perforation, complicating the sialography. she was treated conservatively wi...

in this paper, an ultra low carbon high strength low alloy grade steel was subjected to a two-step forging processand this was followed by different post cooling methods. the highest strength was obtained at a faster coolingrate due to the highly dislocated acicular ferrite structure with the fine precipitation of microalloying carbides andcarbonitrides. at a slow cooling rate, the strength fel...

Consider a planar linkage, consisting of disjoint polygonal arcs and cycles of rigid bars joined at incident endpoints (polygonal chains), with the property that no cycle surrounds another arc or cycle. We prove that the linkage can be continuously moved so that the arcs become straight, the cycles become convex, and no bars cross while preserving the bar lengths. Furthermore, our motion is pie...

Consider a planar linkage, consisting of disjoint polygonal arcs and cycles of rigid bars joined at incident endpoints (polygonal chains), with the property that no cycle surrounds another arc or cycle. We prove that the linkage can be continuously moved so that the arcs become straight, the cycles become convex, and no bars cross while preserving the bar lengths. Furthermore, our motion is pie...