Results 131 to 140 of about 2,186,410 (361)

A new numerical algorithm for Low Mach number supercritical fluids [PDF]

open access: yesarXiv, 2007
A new algorithm has been developed to compute low Mach Numbers supercritical fluid flows. The algorithm is applied using a finite volume method based on the SIMPLER algorithm. Its main advantages are to decrease significantly the CPU time, and the possibility for supercritical fluid flow modelisation to use other discretisation methods (such as ...
arxiv  

Analysis of Thermoplastic Copolymers by Mild Thermal Degradation Coupled to Ion Mobility Mass Spectrometry

open access: yesMacromolecular Rapid Communications, Volume 44, Issue 1, January 2023., 2023
Mild thermal degradation at atmospheric pressure interfaced with ion mobility separation and tandem mass spectrometry analysis offers a fast and sensitive method for the comprehensive characterization of multicomponent industrial elastomers including thermoplastic polyurethanes and rubber copolymers.
Nadrah Alawani   +2 more
wiley   +1 more source

Composition and Injection Rate Co-Optimization Method of Supercritical Multicomponent Thermal Fluid Used for Offshore Heavy Oil Thermal Recovery

open access: yesEnergies
Supercritical multicomponent thermal fluid injection is a new technology with great potential for offshore heavy oil thermal recovery. In the process of thermal fluid generation, the reaction conditions including temperature, pressure, and the organic ...
Shenyao Yang   +5 more
doaj   +1 more source

Microfluidic Technology: A New Strategy for Controllable Synthesis of Metal Nanomaterials

open access: yesChemElectroChem, EarlyView.
Microfluidic reactors offer significant opportunities for efficient synthesis, characterized by rapid heat and mass transfer, quick attainment of reaction conditions, precise parameter control due to the micrometer‐scale volumes. They also support continuous synthesis, increasing throughput, ensuring high reproducibility, enabling scalability and ...
Dongtang Zhang   +6 more
wiley   +1 more source

Analysis of triacylglycerol and phospholipid sn‐positional isomers by liquid chromatographic and mass spectrometric methodologies

open access: yesMass Spectrometry Reviews, EarlyView., 2023
Abstract Analysis of triacylglycerol (TG) and phospholipid sn‐positional isomers can be divided into two main categories: (a) direct separation by chromatography or other means such as ion mobility mass spectrometry and (b) quantification of regioisomer ratios by structurally informative fragment ions with mass spectrometric methods.
Mikael Fabritius, Baoru Yang
wiley   +1 more source

An ecofriendly bleaching method for cashmere fiber with hydrogen peroxide and laccase in SCF-CO2 by avoiding heavy effluent discharge

open access: yesArabian Journal of Chemistry
For the first time, we used laccase (LA) and hydrogen peroxide (H2O2) in supercritical fluid of carbon dioxide (SCF-CO2) to develop a method of bleaching cashmere fiber production in an ecofriendly way.
Fan Wang   +4 more
doaj  

Regularity criterion and energy conservation for the supercritical Quasi-Geostrophic equation [PDF]

open access: yesarXiv, 2015
This paper studies the regularity and energy conservation problems for the 2D supercritical quasi-geostrophic (SQG) equation. We apply an approach of splitting the dissipation wavenumber to obtain a new regularity condition which is weaker than all the Prodi-Serrin type regularity conditions.
arxiv  

Plastic recycling: Challenges and opportunities

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This review offers an in‐depth exploration of current strategies for recycling plastic waste, focusing on mechanical, chemical, and energy recovery methods. It situates these strategies within the context of modern practices by examining ongoing research methodologies and specific case studies related to various types of plastic waste.
Pradeep Sambyal   +6 more
wiley   +1 more source

An ecofriendly and sustainable method for efficient cleaning of raw cashmere fiber with enzymes in SCF-CO2

open access: yesJournal of CO2 Utilization
An efficient and ecofriendly method to remove impurities from raw cashmere fiber was constructed by employing various biological enzymes (lipase, cellulase, pectinase and protease) to form reverse microemulsion in supercritical carbon dioxide.
Fan Wang   +7 more
doaj  

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