The capacity of ureteral stents to enhance the conveyance of urine from kidney to bladder is the critical function for patients that require them. The flow path in and around the stent is not a trivial one, particularly if some elements of peristalsis are present in the ureter. This paper details a numerical flow simulation for an axially symmetric stented ureter segment. The flow of urine thro...

The separation of mixtures with close boiling points is a critical task in the petrochemical industry, and one such mixture that requires o-xylene/styrene. STED process used to separate o-xylene/styrene, which contains certain amount organic sulfur product due limitations process. In this study, underwent enhancements attain effective styrene accomplish deep desulfurization. A sulfolane (SUL) N...

IS GASTROESOPHAGEAL REFLUX DISEASE INFLUENCED BY DUODENOGASTRIC REFLUX ? (Abstract): BACKGROUND: It is well known that the gastroesophageal reflux is a frequent disease in medical practice. A lot of factors are involved in its pathogenesis. The aim of our study was to find out if the duodenogastric reflux is one of these factors. We also looked for the pathological conditions associated with du...

BACKGROUND Helicobacter pylori infection is less prevalent and atrophic gastritis is less extensive in patients with reflux oesophagitis than those without it, but few studies have examined this relationship directly. AIMS We investigated the relationship between H pylori infection, acid secretion, and reflux oesophagitis in Japanese subjects. SUBJECTS A total of 105 patients with erosive r...

Chronic renal failure is an uncommon disease in children with some difference in the etiology in different countries. In this study on 180 children (From 1987 to 1997 in Shiraz) with age range of 3 months to 15 years (mean 8.6±4.2 years). The male to female ratio was 1. 57: 1. The etiology of chronic renal failure in decreasing order of frequency were: reflux nephropathy (25 % ) , glbmerular di...

This study presents the analysis of exergy load distribution in a separation process by extractive distillation for ethanol dehydration. The methodology carried out is divided into three parts: calculation flow considering physical and chemical exergies process; primary transformed contributions consumed exergy; finally, overall efficiency, which shows real percentage energy being used process....

BACKGROUND The relationship between Helicobacter pylori and reflux oesophagitis remains controversial. AIMS To evaluate the relationship between H pylori and reflux oesophagitis in a large number of Japanese subjects. SUBJECTS A total of 5732 consecutive Japanese subjects during a health screening were enrolled. METHODS Gastrointestinal endoscopy was performed on all subjects. We simultan...

OBJECTIVE The aim of this study is investigating the association of Helicobacter pylori (H. pylori) infection and its cytotoxic-associated gene A (cagA) strain with reflux esophagitis. METHODS In a case-control setting (May 2005-2006), patients with reflux esophagitis (case group) were compared with age and gender matched people suffering from symptoms of gastroesophageal reflux disease with ...