Results 31 to 40 of about 1,075,486 (337)

Potential of choline chloride - based natural deep eutectic solvents (NaDES) in the extraction of microalgal metabolites [PDF]

open access: yes, 2017
In a typical chemical process, the solvents are widely used for the dissolution of the reagents, to favor the kinetics and the thermodynamics of a chemical reaction, for the extraction of products, for the separation of mixtures.
Bravi, Marco   +2 more
core   +1 more source

Photophysics and Inverted Solvatochromism of 7,7,8,8-Tetracyanoquinodimethane (TCNQ) [PDF]

open access: yes, 2019
We report the absorption, fluorescence, and Raman spectroscopy of 7,7,8,8- tetracyanoquinodimethane (TCNQ) in a variety of solvents. The fluorescence quantum yields (QYs) of linear alkane solutions are similar to one another, but QY is shown to acutely ...
IIMORI Toshifumi   +4 more
core   +2 more sources

Development of a HPLC protocol to characterize flexible PU foams in support of advanced recycling

open access: yesPolymer Testing
We present a novel High-Performance Liquid Chromatography (HPLC) protocol to characterize flexible polyurethane (PU) foams, aiming to enhance chemical recycling processes.
Jonas Cassimon   +9 more
doaj   +1 more source

Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six Eucalyptus Species

open access: yesApplied Sciences, 2021
The leaves of Eucalyptus have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six Eucalyptus species, E. globulus, E. oblicua,
Xana Álvarez   +3 more
doaj   +1 more source

A Smooth Interface Method for Simulating Liquid Crystal Colloid Dispersions

open access: yes, 2003
A new method is presented for mesoscopic simulations of particle dispersions in liquid crystal solvents. It allows efficient first-principle simulations of the dispersions involving many particles with many-body interactions mediated by the solvents ...
Anderson V J   +25 more
core   +1 more source

Highly selective hydrogenation of furfural over supported Pt nanoparticles under mild conditions [PDF]

open access: yes, 2015
The selective liquid phase hydrogenation of furfural to furfuryl alcohol over Pt nanoparticles supported on SiO₂, ZnO, γ-Al2O₃, CeO₂ is reported under extremely mild conditions.
Durndell, Lee J.   +6 more
core   +1 more source

Evaluating the efficacy of Moringa oleifera leaf extracts prepared using different solvents on growth, yield and quality of tomatoes and peppers [PDF]

open access: yesJournal of Horticulture and Postharvest Research
Purpose: The study aimed to explore different extraction methods, extraction solvents, as well as solvent/water mixtures that could potentially yield(s) the best growth-enhancing, yield- and quality-promoting effects of Moringa oleifera leaf extracts ...
Bonga Ngcobo   +2 more
doaj   +1 more source

Contents of total phenolics and flavonoids in and antioxidant activity of Ilex paraguariensis leaves [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2019
: The objective of this work was to evaluate different solvents and times in the ultrasound-assisted extraction of polyphenols, in order to quantify the total phenolic and flavonoid contents in and the antioxidant activity of mate (Ilex paraguariensis ...
Dilson Antônio Bisognin   +4 more
doaj   +1 more source

Effect and Spectroscopic Analysis of Solutions in Trychloratsetylpyrogallol Synthesis

open access: yesChemistry Proceedings, 2023
The process of interaction of organic substances mainly occurs in solvent environments. Therefore, the effect of solvents on the o-chloroacetylation process was studied.
Ruzimurod Sattorovich Jurayev   +2 more
doaj   +1 more source

Evaluation of alternative solvents in common amide coupling reactions : replacement of dichloromethane and N,N-dimethylformamide [PDF]

open access: yes, 2013
A range of alternative solvents have been evaluated within amidation reactions employing common coupling reagents with a view to identifying suitable replacements for dichloromethane and N,N ...
Abdelmoty   +61 more
core   +1 more source

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