Results 61 to 70 of about 550,954 (391)

CFD-DEM Simulation of Backflow Blockage of Deep-Sea Multistage Pump

open access: yesJournal of Marine Science and Engineering, 2021
The multistage centrifugal pump is the critical component of mineral resources lifting in deep-sea mining. The reflux of nodules in the lifting pipe caused by the emergency pump stop can easily cause the pump to clog. In this paper, coupled Computational
Qiong Hu   +4 more
doaj   +1 more source

Multiple Steady States in Heterogeneous Azeotropic Distillation [PDF]

open access: yes, 1994
In this article we study multiple steady states in ternary heterogeneous azeotropic distillation. We show that in the case of infinite reflux and an infinite number of trays one can construct bifurcation diagrams on physical grounds with the distillate ...
Bekiaris, Nikolaos   +2 more
core  

The Role of Esophageal PH-metri Test on Gastro-Esophageal Reflux Disease Diagnosis [PDF]

open access: yes, 2008
Gastro-esophageal reflux disease is a pathological condition of esophagus which is caused by gastric content reflux into esophagus. There is an increased prevalence of gastro-esophageal reflux disease.
Abdullah, M. (Murdani)   +7 more
core   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Synthesis and alkyne-coupling chemistry of cyclomanganated 1- and 3-acetylindoles, 3-formylindole and analogues [PDF]

open access: yes, 2006
The syntheses are reported of new cyclomanganated indole derivatives (1-acetyl-κO-indolyl-κC2)dicarbonylbis(trimethylphosphite)manganese (2), (1-methyl-3-acetyl-κO-indolyl-κC2)tetracarbonylmanganese (4), (3-formyl-κO-indolyl-κC2)tetracarbonylmanganese ...
Depree, Gary J.   +4 more
core   +2 more sources

Symptoms of Laryngopharyngeal Reflux: Is It Really Reflux? [PDF]

open access: yesOtolaryngology–Head and Neck Surgery, 2011
Objective1) Report the accuracy of subjective Reflux Symptom Index scores (RSI) and objective Reflux Finding Scores (RFS) in identifying patients with laryngopharyngeal reflux (LPR) using ambulatory pH monitoring as confirmation. 2) Present clinical recommendations for the use of subjective and objective tools in the diagnosis of LPR ...
Michael Friedman   +4 more
openaire   +2 more sources

Exploiting the Functionality of Cerium Oxide‐Modified Carbon Nanohorns Catalysts Toward Enhanced CO2 Reduction Performance

open access: yesAdvanced Functional Materials, EarlyView.
A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice   +9 more
wiley   +1 more source

Progression of Gastric Acid Production in Preterm Neonates: Utilization of In-vitro Method

open access: yesFrontiers in Pediatrics, 2018
Background: Limited studies are done regarding ability to produce gastric acid in preterm infants and most studies used in vivo method of assessing gastric pH.Objectives: To assess the feasibility of using an in vitro method of measuring gastric pH in ...
Murali R. Palla   +3 more
doaj   +1 more source

Nebulization reflux concentrator [PDF]

open access: yes, 1986
A nebulization reflux concentrator for removing trace gas contaminants from a sample gas is described. Sample gas from a gas supply is drawn by a suction source into a vessel.
Cofer, W. R., III, Collins, V. G.
core   +1 more source

Feasibility of Batch Reactive Distillation with Equilibrium-Limited Consecutive Reactions in Rectifier, Stripper, or Middle-Vessel Column. [PDF]

open access: yes, 2011
A general overall feasibility methodology of batch reactive distillation of multireaction systems is developed to study all the possible configurations of batch reactive distillation.
Lelkes, Zoltan   +4 more
core   +4 more sources

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