Results 51 to 60 of about 6,133,601 (331)

SYNTHESIS OF FAUJASITE WITH HIGH THERMAL STABILITY FROM FLY ASH

open access: yesIndonesian Journal of Chemistry, 2010
Faujasite was hydrothermally synthesized from fly ash at 100oC in alkaline solution by reflux with various concentration of HCl and fusion with NaOH (weight ratio of NaOH/fly ash = 1.2) pretreatments.
Sutarno Sutarno, Yateman Arryanto
doaj   +1 more source

Production of n-propyl acetate by reactive distillation : experimental and theoretical study [PDF]

open access: yes, 2007
First steps of the development of a catalytic reactive distillation process for the production of n-propyl acetate based on experiments and simulations are proposed.
Bart   +22 more
core   +2 more sources

Characteristics and Outcomes of Male Participants in a Multicenter Longitudinal Australian Study Cohort

open access: yesArthritis Care &Research, EarlyView.
Objective The aim of this study was to determine the differences in demographic, serologic, and clinical characteristics between male and female patients with systemic sclerosis (SSc) in an Australian cohort. Methods This was a retrospective observational study using data from the Australian Scleroderma Cohort Study.
Emily Lin   +14 more
wiley   +1 more source

Study on nitrogen and phosphorus removal by air stripping reflux A2/O-MBBR with double sludge system

open access: yesXi'an Gongcheng Daxue xuebao
In order to improve the efficiency of nitrogen and phosphorus removal of traditional A2/O and reduce energy consumption, the nitrification mixed liquid and sludge were refluxed by air stripping, and the filler was added to the aerobic pond to form an air
ZHOU Yuhong   +3 more
doaj   +1 more source

Typical symptoms and not positive reflux-cough correlation predict cure of gastroesophageal reflux disease related chronic cough after laparoscopic fundoplication: a retrospective study

open access: yesBMC Gastroenterology, 2019
Background The effect of laparoscopic fundoplication on reflux-related chronic cough is unpredictable, the aim of the study is to investigate the predictive effect of positive reflux-cough correlation on the resolution of reflux-related chronic cough ...
Dong Chen   +5 more
doaj   +1 more source

Batch Extractive Distillation with Light Entrainer [PDF]

open access: yes, 2006
Use of a light entrainer in batch extractive distillation is justified when the mixture boils at a high temperature, or when an appropriate heavy or intermediate entrainer cannot be found.
Endre Rev   +5 more
core   +1 more source

Dynamic models for start-up operations of batch distillation columns with experimental validation [PDF]

open access: yes, 2004
The simulation of batch distillation columns during start-up operations is a very challenging modelling problem because of the complex dynamic behaviour. Only few rigorous models for distillation columns start-up are available in literature and generally
Cabassud, Michel   +4 more
core   +2 more sources

Reflux Extraction Optimization and Antioxidant Activity of Phenolic Compounds from Pleioblastus amarus (Keng) Shell

open access: yesMolecules, 2022
Phenols were extracted from the Pleioblastus amarus (Keng) shell (PAS) using ethanol. A Plackett–Burman assessment indicated that the factors affecting polyphenol extraction included the ethanol concentration, extraction temperature, liquid to solid ...
Yuanyuan Ma   +9 more
semanticscholar   +1 more source

Discordance Between Patient and Physician Global Assessments in Early Systemic Sclerosis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aims to identify factors associated with patient global assessment (PtGA) and physician global assessment (PhGA) and discordance between them in systemic sclerosis (SSc). Methods Data from adults with early SSc (<5 years) from the Collaborative National Quality and Efficacy Registry were included.
Ellen Romich   +35 more
wiley   +1 more source

Sub-Atmospheric Distillation for Water (1) + Dimethyl Amino Ethyl Azide (2) Mixture [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2016
Dimethyl amino ethyl azide (DMAZ) is a good replacement for hydrazine group in space programs. This chemical was purified from water (1) + DMAZ (2) mixture in sub-atmospheric distillation column due to thermal sensitivity of DMAZ.
Shahram Ghanbari Pakdehi   +1 more
doaj  

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