Results 21 to 30 of about 247,903 (198)

Extraction of rhenium (VII) by tetraoctylammonium bromide mixed with low-melting thinners

open access: yesReviews in Analytical Chemistry, 2011
Regularities of extraction of rhenium (VII) melt tetraoctyl-ammonium bromide in a mixture of higher alcohols and paraffin were determined. Quantitative extraction of measurements obtained in the range of pH of the aqueous phase 1.5–2.0 was carried out ...
Troeglazova Anna V.   +3 more
doaj   +1 more source

Produção de álcoois superiores por linhagens de Saccharomyces durante a fermentação alcoólica Production of higher alcohols by Saccharomyces strains during alcoholic fermentation

open access: yesScientia Agricola, 1993
A produção de álcoois superiores pelas leveduras Saccharomyces cerevisiae M-300-A, Saccharomyces uvarum IZ-1904 e levedura de panificação (Saccharomyces cerevisiae) foi estudada em diversas condições de temperatura, concentração de sacarose, pH, fontes ...
L.E. Gutierrez
doaj   +1 more source

Diffusion of volatile organic chemicals in porous media. 2. alcohol/templated porous carbon systems [PDF]

open access: yes, 2006
The aim of the present report was to measure the diffusion coefficients, modes of transport, and activation energies of some alcohols into templated porous carbons.
Sakintuna, Billur   +2 more
core   +1 more source

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization [PDF]

open access: yes, 2015
The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value ...
Gabriels, D   +4 more
core   +2 more sources

The synthesis of higher alcohols from CO2 hydrogenation over Mn-Cu-K modified Fe5C2 and CuZnAlZr tandem catalysts

open access: yesFrontiers in Energy Research, 2023
The catalytic production of higher alcohols (HAs) is a promising path for converting CO2 into value-added chemical products. The application is still limited by the low selectivity of HAs (less than 10%) on most catalysts.
Jiamin Huang   +7 more
doaj   +1 more source

Yeast : the soul of beer’s aroma—a review of flavour-active esters and higher alcohols produced by the brewing yeast [PDF]

open access: yes, 2014
Among the most important factors influencing beer quality is the presence of well-adjusted amounts of higher alcohols and esters. Thus, a heavy body of literature focuses on these substances and on the parameters influencing their production by the ...
A Eden   +131 more
core   +1 more source

The Impact of Chitosan on the Chemical Composition of Wines Fermented with Schizosaccharomyces pombe and Saccharomyces cerevisiae

open access: yesFoods, 2020
This study investigates the influence of the antimicrobial agent chitosan on a selected Schizosaccharomyces pombe strain during the alcoholic fermentation of ultra-pasteurized grape juice with a high concentration of malic acid.
Stefano Scansani   +4 more
doaj   +1 more source

Modifying monolayer behaviour by incorporating subphase additives and improving Langmuir–Blodgett thin film deposition on optical fibres [PDF]

open access: yes, 2014
Experiments showing the possibility of modifying the behaviour of calix[4]resorcinarene monolayers at the air–water interface and optimising the deposition of multilayer coatings onto optical fibres are presented.
Collins, Mike   +6 more
core   +1 more source

Stepwise linear discriminant analysis to differentiate Spanish red wines by their Protected Designation of Origin or category using physico-chemical parameters

open access: yesOENO One, 2020
Aim: The aim of this work was to determine the physico-chemical variables that differentiating red wines from the “Castilla y León” Spanish region by their Protected Designation of Origin (PDO) and wine category ("young", “oak”, “crianza”, or “reserve”).
Rubén Del Barrio Galán   +3 more
doaj   +1 more source

An Analysis of the Combustion Behavior of Ethanol, Butanol, Iso-Octane, Gasoline, and Methane in a Direct-Injection Spark-Ignition Research Engine [PDF]

open access: yes, 2012
Future automotive fuels are expected to contain significant quantities of bio-components. This poses a great challenge to the designers of novel low-CO2 internal combustion engines because biofuels have very different properties to those of most typical ...
Aleiferis, PG   +2 more
core   +2 more sources

Home - About - Disclaimer - Privacy