Dew formation on a transparent surface creates a pattern that can cause blurred view over it. This fogging phenomenon should be avoided in many applications. Mist condensation of water on a cold surface exposed to humid air is studied in this work. In order to analyze the misting process, the fluid flow and heat transfer of humid air as well as the heat transfer across the solid surface are con...

background gastroesophageal reflux disease is a common, chronic disease worldwide. the weekly prevalence of reflux in developed countries is 10% to 48%. it has previously been reported as 5% in asian countries, but new reports show a higher level in both asian and arab countries. in iran, reflux has increased over the last two decades. there are few studies concerning the prevalence of reflux i...

The current management approach for critically ill patients emphasizes maintaining adequate cardiac output and mean arterial pressure. Recently, researchers have increasingly emphasized the clinical significance of venous reflux. Bedside Doppler ultrasonography offers continuous, dynamic, quantifiable assessment reflux status. In this review, we explore pertinent literature on assessing status ...

OBJECTIVES To evaluate the prognostic value of initial direct radionuclide cystography (DRC) for spontaneous resolution of vesicoureteral reflux (VUR). METHODS Fifty-one children with initial diagnosis and 1-6 years' follow-up of VUR by DRC were enrolled in this study. VUR was graded according to the anatomic grading as (1) mild reflux corresponding to tracer just in ureter, (2) moderate refl...

a simple and efficient procedure has been developed for the synthesis of 2,3-dihydroquinazolin-4(1h)-ones derivatives under solvent-free conditions. this method uses the condensation of isatoic anhydride, aldehydes, and amines in the presence of a catalytic amount sulfonated porous carbon (spc). one of the important advantages of the new method is that the spc could be recycled and reused.

BACKGROUND AND OBJECTIVE A new catheter-free outpatient oesophageal pH-meter system (Bravo) has recently been developed. The objective of this study is to test the tolerance, safety and efficacy of the system in the measurement of gastric-oesophageal reflux by comparing it with a conventional pH system. PATIENTS AND METHOD The study was performed on a control group consisting of 10 healthy vo...

In this study, a short method for the design of reactive distillation is presented. The method is based on distillation lines and tray-by-tray calculations, and a new strategy is suggested to locate the reflux ratio, the number of stages, and feed tray. The material balances are solved from the outside (top and bottom) to the inside of the distillation column (feed), to ensure that the product ...

Background & Aims: The aim of the present study was to find whether prone position is one of the symptoms of childhood gastroesophageal reflux disease or not. Method: In this prospective case-control study, 200 children with gastroesophgeal reflux disease (case group) and 210 healthy children (control group) were studied between 21 march 2009 and 21 march 2011. Data gathering was performed by a...

Non-erosive reflux disease (NERD) is the most common presentation of gastroesophageal reflux disease. Although acid reflux is the most important cause of symptom generation in NERD patients, non-acid reflux is also associated with reflux symptoms. The temporal relation between symptoms and reflux episodes is of importance in evaluating the results of combined pH-impedance monitoring in NERD pat...

Objective- Trigonella foenum graecum, (Fenugreek) has anti-inflammation, antiseptic and antidiabetic activities in traditional medicine. This study was performed to investigate the protection effects of Fenugreek seed extract on the experimental reflux esophigitis (RE) in rats. Design- experimental study. Animals- 24 male Wistar albino rats. Procedures- Rats were randomly allocated into 4 group...