Results 201 to 210 of about 2,813,747 (252)

Ratio Between Proximal/Distal Gastroesophageal Reflux Does Not Discriminate Abnormal Proximal Reflux

open access: yesWorld Journal of Surgery, 2013
AbstractIntroductionThe threshold for pathologic proximal acid reflux is a controversial topic. Most values previously published are based on absolute numbers. We hypothesized that a relative value representing the quantitative relation between the amount of acid reflux that reaches proximal levels and the amount of distal reflux would be a more ...
Sebastião Carlos Pannocchia, Neto   +3 more
openaire   +3 more sources

The Impact of Reflux Ratio on Rectification Column Theoretical Plate Number

open access: yesAdvanced Materials Research, 2011
In this paper, the computer-aided calculation is introduced to study the influences of the reflux ratio on the theoretical plate number of rectification column. It is found that the number of theoretical plates of rectification column is increasing as the decreasing of the reflux ratio, which is mainly caused by the increasing of the plate number in ...
Jia Yang Wang   +3 more
openaire   +2 more sources
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Spontaneous vesicoureteral reflux resolution curves based on ureteral diameter ratio

Journal of Pediatric Urology, 2023
Various factors influence the clinical course of vesicoureteral reflux (VUR) in the pediatric population. Distal ureteral diameter ratio (UDR) is an objective measure reflective of ureterovesical junction anatomy that has been shown to independently predict both spontaneous resolution and breakthrough febrile urinary tract infection (UTI) in children ...
Angela M. Arlen   +3 more
openaire   +2 more sources

The Usefulness of The Likelihood Ratio in The Diagnosis of Dyspepsia and Gastroesophageal Reflux Disease

American Journal of Gastroenterology, 1999
Clinicians are familiar with the concepts of sensitivity and specificity to describe the accuracy of a diagnostic test. These measures do not always express the probability that a patient has a disease with a given test result as this will vary with the prevalence of the disorder in the population.
P, Moayyedi, A T, Axon
openaire   +3 more sources

A constant-reflux-ratio distilling head

Journal of Chemical Education, 1952
An improved constant-reflux-ratio distillation head has been designed that is especially suitable for analytical work involving the fractional distillation of mixtures that boil below 0 degrees C.
openaire   +1 more source

An electronic timing device and reflux ratio controller

Journal of the Society of Chemical Industry, 1946
AbstractAn electronic timing device is described, which is designed to operate a magnetically‐controlled reflux dividing head for stills using a total condenser. The timing unit is constructed of readily obtainable radio components and can be assembled by anyone with a good knowledge of electricity.
G. O. Thacker, B. Y. Walker
openaire   +1 more source

Effect of reactant ratio and reflux time on the properties of resole

Acta Polymerica, 1987
AbstractThe effect of the molar ratio phenol: formaldehyde on the viscosity and the solid content of the resin has been investigated.
F. F. Abdel‐Mohsen, F. M. Helaly
openaire   +1 more source

Batch extractive distillation under constant reflux ratio

Computers & Chemical Engineering, 1994
Abstract The process of batch extractive distillation may provide the advantages of both batch and extractive distillation. So far this process has not been applied at all probably due to its complexity. An algorithm and a computer program were developed for simulating the experiments of a batch extractive distillation process (separation of acetone ...
P. Lang   +3 more
openaire   +1 more source

A Systematic Review and Meta-Analysis of the Sex Ratio for Barrett's Esophagus, Erosive Reflux Disease, and Nonerosive Reflux Disease

American Journal of Epidemiology, 2005
Barrett's esophagus is associated with reflux disease and substantially increases the risk of esophageal adenocarcinoma. The authors undertook a systematic review and meta-analysis of the sex ratio for Barrett's esophagus, erosive reflux disease (ERD), and nonerosive reflux disease (non-ERD) to compare these results with the sex ratio for esophageal ...
M B, Cook, C P, Wild, D, Forman
openaire   +2 more sources

Vapor recompressed batch distillation: Optimizing reflux ratio at variable mode

Computers & Chemical Engineering, 2019
Abstract This work aims at optimizing a vapor recompressed batch distillation that runs at variable reflux mode by employing a multi-objective optimization (MOO) strategy. This involves the formulation of optimization problem using factorial analysis for identifying dominating variables followed by solving the optimization problem using the elitist ...
Sidharth Sankar Parhi   +2 more
openaire   +1 more source

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