Results 21 to 30 of about 5,414 (199)

Electronic excitation of furfural as probed by high-resolution vacuum ultraviolet spectroscopy, electron energy loss spectroscopy, and ab initio calculations [PDF]

open access: yes, 2015
The electronic spectroscopy of isolated furfural (2-furaldehyde) in the gas phase has been investigated using high-resolution photoabsorption spectroscopy in the 3.5-10.8 eV energy-range, with absolute cross section measurements derived.
Blanco Ramos, Francisco
core   +4 more sources

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

Stir Bar Sorptive Extraction of Volatile Compounds in Vinegar: Validation Study and Comparison With Solid Phase Microextraction [PDF]

open access: yes, 2007
Stir bar sorptive extraction was evaluated for analysing volatiles in vinegar. The procedure developed shows detection and quantitation limits, and linear ranges adequate for analysing this type of compounds. The accuracy obtained was close to 100%, with
Alves   +25 more
core   +2 more sources

The odour of white bread [PDF]

open access: yes, 1973
Volatile constituents of white bread were investigated. Different methods were used for isolating and concentrating components to avoid artefacts as far as possible. Especially good was enlarged vapour analysis.
Mulders, E.J.
core   +1 more source

Evaluation of Shelf Life and Heat Treatment of Tomato Products

open access: yesCzech Journal of Food Sciences, 2009
Model storage experiments of pasteurised tomato puree and ketchup were carried out. The sets of samples were boiled at 100°C, during the heating the changes of selected markers were followed and correlated with the sensory evaluation, the markers were ...
A. Rajchl   +4 more
doaj   +1 more source

Synthesis of Jasmonoides from Furan Derivatives

open access: yesMolecules, 2000
This paper presents applicability of commonly available furan derivatives, like 2-methyl furan, furaldehyde and 5-methylfuraldehyde in syntheses of jasmanoides.
Janusz Nowicki
doaj   +1 more source

Electrochemical Determination of the “Furanic Index” in Honey

open access: yesMolecules, 2021
5-(hydroxymethyl)furan-2-carbaldehyde, better known as hydroxymethylfurfural (HMF), is a well-known freshness parameter of honey: although mostly absent in fresh samples, its concentration tends to increase naturally with aging.
Severyn Salis   +5 more
doaj   +1 more source

A new family of high nuclearity CoII/DyIII coordination clusters possessing robust and unseen topologies [PDF]

open access: yes, 2015
Mixing Co(NO3)2·6H2O/Dy(NO3)3·6H2O/(E)-4-(2-hydroxy-3-methoxybenzylideneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (HL)/pivalic acid/Et3N in various solvents results in the synthesis of seven compounds formulated as [CoII2DyIII2(μ3-MeO)2(L)2 ...
Alaa Abdul-Sada   +58 more
core   +1 more source

Preparation of a Molecularly Imprinted Film on Quartz Crystal Microbalance Chip for Determination of Furanic Compounds

open access: yesChemosensors, 2021
The structural preferences of furanic compounds were studied using a combination of a molecularly imprinted film (MIF) on a piezoelectric-quartz chip. The furanic compounds and their derivatives were used as the templates.
Wei-Liang Lin, Chung-Yin Lin, Dar-Fu Tai
doaj   +1 more source

Quantum entanglement in the NMR implementation of the Deutsch-Jozsa algorithm [PDF]

open access: yes, 1999
A scheme to execute an n-bit Deutsch-Jozsa (D-J) algorithm using n qubits has been implemented for up to three qubits on an NMR quantum computer. For the one and two bit Deutsch problem, the qubits do not get entangled, hence the NMR implementation is ...
A Ekert   +18 more
core   +2 more sources

Home - About - Disclaimer - Privacy