Results 131 to 140 of about 245,492 (356)
Supercritical Fluid Extraction/Enzyme Assay: A Novel Technique to Screen for Pesticide Residues in Meat Products [PDF]
, 1991 John E. France, Jerry W. King
openalex +1 more source
European Journal of Organic Chemistry, EarlyView.Renewable‐based furanics derived from 5‐HMF are used to synthesize cyclic organic carbonates (COCs) via CO2 insertion into epoxides. The BHTHF/NaBr complexing system shows high activity, achieving 94–99% epoxide conversion and 70–99% COC selectivity under mild conditions.
Nicola Bragato +7 more
wiley +1 more source
气体物理Supercritical jet technology, as a new technology of supercritical fluid development, has important applications in aerospace engines, carbon sequestration, deep oil and gas extraction and other aspects.
Wangping XI, Dong YANG, Lin CHEN
doaj +1 more source
Microscale physics and macroscale convective heat transfer in supercritical fluids [PDF]
arXivDriven by fundamental thermodynamic efficiency considerations, an emerging trend in the energy and propulsion systems is that the working fluid operates at a pressure above the critical pressure. Energy transport is thus accompanied by dramatic and strongly nonlinear variations of thermophysical properties, which cause abnormal heat transfer behavior ...
arxiv
Enantioselective Anion‐Binding‐Catalyzed Nucleophilic Addition to 4‐Quinolones
European Journal of Organic Chemistry, Accepted Article.Chiral quinolones and their derivatives are predominant synthetic building blocks and pharmacological agents. Nevertheless, their synthesis mostly relies on transition‐metal‐catalyzed enantioselective 1,4‐additions of organometallic reagents such as Grignard, organozinc or organoboron species for alkylation, arylation and alkynylation reactions. Herein,
Martin Aleksiev +2 more
wiley +1 more source
Rapid Communications in Mass Spectrometry, EarlyView., 2023 Rationale The present work shows comprehensive chromatographic methods and MS conditions that have been developed based on the chemical properties of each lipid subclass to detect low‐abundance molecular species. This study shows that the developed methods can detect low‐ and/or very‐low‐abundant lipids like phosphatidic acid (PA) in the ...
Bebiana C. Sousa +6 more
wiley +1 more source
Comparison of Solid-Phase Extraction and Supercritical Fluid Extraction for the Analysis of Morphine in Whole Blood [PDF]
, 1999 Desiree L. Allen +2 more
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, 2017 It is important to understand the mechanism and implications of different modifiers on analytical and preparative processes under chromatography with supercritical fluids (SFs) and under extraction with SFs.
I. Brondz, B. Sedunov, N. Sivaraman
semanticscholar +1 more source
Ab initio intermolecular interactions mediate thermochemically real-fluid effects that affect system reactivity [PDF]
arXivThe properties of supercritical fluids are dictated by intermolecular interactions that involve two or more molecules. Such intermolecular interactions were described via intermolecular potentials in historical supercritical combustion modeling studies, but have been treated empirically and with no consideration of radical interactions or multi-body ...
arxiv
Turbulence signatures of natural river morphology in four dimensions
River Research and Applications, Volume 39, Issue 1, Page 122-133, January 2023., 2023 Abstract Turbulent flow in natural river channels drives geophysical processes and exerts a fundamental influence on aquatic biota. An extensive range of turbulence properties have previously been synthesized into four categories or “dimensions” with ecological relevance: intensity, periodicity, orientation and scale (IPOS).
Giuditta Trinci +3 more
wiley +1 more source