Results 31 to 40 of about 297,128 (308)

Comparative study of the vibrational optical activity techniques in structure elucidation : the case of galantamine [PDF]

open access: yes, 2019
The absolute configuration of the alkaloid galantamine was studied using a range of solution-state techniques; nuclear magnetic resonance (NMR), vibrational circular dichroism (VCD), and Raman optical activity (ROA). While the combined use of NMR and VCD
Bultinck, Patrick   +4 more
core   +2 more sources

MetAssimulo:Simulation of Realistic NMR Metabolic Profiles

open access: yesBMC Bioinformatics, 2010
Background Probing the complex fusion of genetic and environmental interactions, metabolic profiling (or metabolomics/metabonomics), the study of small molecules involved in metabolic reactions, is a rapidly expanding 'omics' field. A major technique for
De Iorio Maria   +3 more
doaj   +1 more source

Correlation of high-field and zero- to ultralow-field NMR properties using 2D spectroscopy [PDF]

open access: yes, 2020
The field of zero- to ultralow-field (ZULF) nuclear magnetic resonance (NMR) is currently experiencing a rapid growth, owing to the progress in optical magnetometry, and also attractive features of ZULF NMR, such as low hardware cost and excellent spectral resolution achieved under ZULF conditions. In this work, an approach is proposed and demonstrated
arxiv   +1 more source

Automated quality control for proton magnetic resonance spectroscopy data using convex non-negative matrix factorization [PDF]

open access: yes, 2016
Proton Magnetic Resonance Spectroscopy (1H MRS) has proven its diagnostic potential in a variety of conditions. However, MRS is not yet widely used in clinical routine because of the lack of experts on its diagnostic interpretation.
Arús, Carles   +4 more
core   +1 more source

13C NMR Spectral Prediction by Means of Generalized Atom Center Fragment Method

open access: yesMolecules, 1997
Knowledge-based NMR spectral prediction relies on the correlations between substructures and sub-spectra. To extract the correlations, a systematic substructure measurement has been developed to classify substructures according to their chemical shift ...
Jun Xu
doaj   +1 more source

Production of Exopolysaccharides by Cultivation of Halotolerant Bacillus atrophaeus BU4 in Glucose- and Xylose-Based Synthetic Media and in Hydrolysates of Quinoa Stalks

open access: yesFermentation, 2022
A halotolerant, exopolysaccharide-producing bacterium isolated from the Salar de Uyuni salt flat in Bolivia was identified as Bacillus atrophaeus using next-generation sequencing. Comparisons indicate that the genome most likely (p-value: 0.0024) belongs
Diego Chambi   +12 more
doaj   +1 more source

Software Tools and Approaches for Compound Identification of LC-MS/MS Data in Metabolomics. [PDF]

open access: yes, 2018
The annotation of small molecules remains a major challenge in untargeted mass spectrometry-based metabolomics. We here critically discuss structured elucidation approaches and software that are designed to help during the annotation of unknown compounds.
Blaženović, Ivana   +3 more
core   +3 more sources

Resonance assignments for latherin, a natural surfactant protein from horse sweat [PDF]

open access: yes, 2013
Latherin is an intrinsically surfactant protein of ~23 kDa found in the sweat and saliva of horses. Its function is probably to enhance the translocation of sweat water from the skin to the surface of the pelt for evaporative cooling.
Cooper, Alan   +4 more
core   +2 more sources

Database Independent Automated Structure Elucidation of Organic Molecules Based on IR, 1H NMR, 13C NMR, and MS Data

open access: yesJournal of Chemical Information and Modeling, 2020
Herein, we report a computational algorithm that follows a spectroscopist-driven elucidation process of the structure of an organic molecule based on IR, 1H and 13C NMR, and MS tabular data.
Matevž Pesek   +5 more
semanticscholar   +1 more source

Mushroom and cereal β-D-glucan solid state NMR and FTIR datasets

open access: yesData in Brief, 2022
In the associated published article Kremmyda et al. (2021), the C1 region of the NMR spectra were examined in detail, as the C1 carbon was common to the crucial linkages in the glucan, and the most clearly separated region in the spectra.
Alexandra Kremmyda   +6 more
doaj  

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