Results 131 to 140 of about 1,203,342 (289)

Efficient Synthesis of Cannabinoid Acids

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
In this study, an alternative synthesis of cannabinoid acids was developed based on an O→C acyl rearrangement. Specifically, this strategy involved regioselective bromination followed by halogen–lithium exchange and intramolecular nucleophilic addition, which led to successful carboxylation.
Ryosuke Arai   +8 more
wiley   +1 more source

Coumarin solubility and extraction from emburana (Torresea cearensis) seeds with supercritical carbon dioxide

open access: yes, 2015
Coumarin is an active principle found in several vegetable species with a characteristic smell of vanilla. It is widely used as a perfume fixer, paint and spray additive, and in cleaning products.
Mohamed, RS   +4 more
core   +1 more source

A Control Strategy With Hybrid Compressor Modeling for Electric Vehicle CO2 Heat Pump Systems

open access: yesEnergy Science &Engineering, EarlyView.
A hybrid PSO‐BP compressor sub‐model is developed and embedded in a MATLAB/Simscape physical model of a transcritical CO2 heat pump system for electric vehicles. Based on this high‐fidelity platform, a phased variable‐PTC cooperative control strategy is proposed and evaluated.
Jiaqi Dong   +5 more
wiley   +1 more source

METHODS OF EXTRACTION OF VALUABLE COMPONENTS FROM GRAPE POMACE

open access: yesШәкәрім университетінің хабаршысы: Техника ғылымдар
This article discusses various methods of extracting valuable components from grape pomace, a byproduct of winemaking. Special attention is given to the effectiveness of traditional and innovative extraction methods, including solvent extraction, as well
A. Bayadilova   +4 more
doaj   +1 more source

Isolation of alkylresorcinols: Classical and supercritical CO2 extraction methods

open access: yes, 2006
This chapter focuses on the use of different methods for isolation of alkylresorcinols. Alkylresorcinols are members of a lipid group called non-isoprenoid phenolic lipids.
Kozubek, A   +4 more
core  

Mathematical modeling of supercritical fluid extraction for obtaining extracts from vetiver root

open access: yes, 2015
Mathematical modeling study for extraction of oil from vetiver root using supercritical carbon dioxide was performed in this study. Mass transfer is based on local equilibrium between solvent and solid.
Hatami, T, Melreles, MAA, Zahedi, G
core   +1 more source

Micro–Macro Performance Response Characteristics of Reservoirs in Water‐Bearing Coal Seams After Supercritical CO2 Injection

open access: yesEnergy Science &Engineering, EarlyView.
1. The synergistic effects of carbonate mineral dissolution, coal matrix drying/shrinkage, and supercritical CO2 (ScCO2)‐induced organic matter extraction collectively enhance pore/fracture connectivity, thereby significantly improving permeability. 2.
Junwen Zhou, Enguang Han
wiley   +1 more source

Wall Condensation Heat‐Transfer Prediction for Energy Systems: A Mechanism‐Based Critical Review of Correlations, CFD and Physics‐Informed Models

open access: yesEnergy Science &Engineering, EarlyView.
This critical review integrates wall‐condensation configurations, governing transport mechanisms, modelling approaches, and validation evidence into a unified framework for assessing predictive applicability. The framework supports evidence‐based model selection and preliminary condenser design by considering heat‐transfer area, pressure‐drop ...
Md. Jisan Mahmud   +2 more
wiley   +1 more source

Optimisation of Supercritical Fluid Extraction for Fatty Acids from Benincasa hispida Seed Oil: A Response Surface Approach

open access: yesJournal of Pharmacy
Introduction: The goal of this study was the optimisation of the process parameters for the extraction of Benincasa hispida seed extract using the supercritical carbon dioxide.
Rizal Za’im Ramli   +2 more
doaj  

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