Prediction of Vesicoureteral Reflux by Ultrasonography and Renal Scan in Children
Global Pediatric Health, 2022 Background. In recent studies, renal ultrasonography and dimercapto-succinic acid (DMSA) scan have a role in predicting vesicoureteral reflux in children with febrile urinary tract infection (UTI). Materials and Methods .
Banafsheh Arad MD +3 more
doaj +1 more source
Generalised model for heteroazeotropic batch distillation with variable decanter hold-up [PDF]
, 2013 A general model of batch heteroazeotropic distillation is proposed. Both liquid phases present in the decanter can be refluxed or withdrawn as distillate, their hold-up can be increased, decreased or kept constant, as well. By assuming maximal separation,
Gerbaud, Vincent +2 more
core +2 more sources
The Role of Pepsinogenes and Some Intestinal Hormones in Pathogenesis of Gastroesophageal Reflux Disease [PDF]
, 2018 80 patients with gastroesophageal reflux disease (GERD) were examined. The diagnosis of GERD was based on the history of the disease, complaints of patients, the results of daily monitoring of pH in the lower third of the esophagus, data of ...
Boichuk, V. (Vira)
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Optimal Control of Reflux Ratio for Batch Distillation.
KAGAKU KOGAKU RONBUNSHU, 1999 バッチ蒸留では, ユーティリティーコスト最小, 製品量最大という評価関数のもとで還流比の最適軌道が存在する.このような最適軌道をポントリャギンの最大原理により算出する為には, 膨大な繰り返し計算が必要であった.本報では, ハミルトン随伴関数の初期値を修正してゆく計算法を提案する。この計算法と最近のコンピュータの進歩により実時間で最適軌道を計算し還流比を制御できるようになる。また, 最適還流比を状態変数の関数として表した制御テーブルをあらかじめ作成しておく事もできる.これらの制御法は評価関数に対して真に最適な操作となる.
JUN MORIMOTO, MUTUMI SUZUKI
openaire +2 more sources
Control of a train of high purity distillation columns for efficient production of 13C isotopes [PDF]
, 2015 It is well-known that high-purity distillation columns are difficult to control due to their ill-conditioned and strongly nonlinear behaviour. The fact that these processes are operated over a wide range of feed compositions and flow rates makes the ...
Both, Raxana +5 more
core +1 more source
PLoS ONE, 2015 BackgroundCentral obesity has been suggested as a risk factor for gastroesophageal reflux disease. The aim of this study was to evaluate the association of visceral fat area and other lifestyle factors with reflux esophagitis or Barrett's esophagus in ...
Juntaro Matsuzaki +8 more
doaj +1 more source
Separation of n-hexane - ethyl acetate mixture by azeotropic batch distillation with heterogeneous entrainers [PDF]
, 2005 In this article, a systematic study of the separation of the n-hexane - ethyl acetate mixture with an entrainer by heterogeneous azeotropic batch distillation is performed.
Acosta +12 more
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Modeling of Thermal Modes of the Reflux Condenser of the Absorption Refrigeration Unit [PDF]
, 2017 Currently, developers of modern refrigeration equipment, in accordance with the plans of the UN, are moving to natural refrigerants (hydrocarbons, carbon dioxide and ammonia) that do not have an adverse technological impact on the ecosystem of the planet.
Kholodkov, A. (Andrey) +1 more
core +2 more sources
Experimental Study on Operational Aspects of a Packed Distillation Column
Журнал інженерних наукToday, the chemical industry relies heavily on separation operations to produce products of diverse chemical compositions. Distillation, a widely used technique, is at the forefront of these operations. While theoretical studies on the design, simulation,
Hernández Romano A. I. +4 more
doaj +1 more source
Not All Children with Cystic Fibrosis Have Abnormal Esophageal Neutralization during Chemical Clearance of Acid Reflux. [PDF]
, 2017 PurposeAcid neutralization during chemical clearance is significantly prolonged in children with cystic fibrosis, compared to symptomatic children without cystic fibrosis.
Di Lorenzo, Carlo +9 more
core +3 more sources