Results 21 to 30 of about 1,404,550 (318)
Chemical shift extremum of 129Xe(aq) reveals details of hydrophobic solvation
Scientific Reports, 2018 The 129Xe chemical shift in an aqueous solution exhibits a non-monotonic temperature dependence, featuring a maximum at 311 K. This is in contrast to most liquids, where the monotonic decrease of the shift follows that of liquid density.
Petri Peuravaara +5 more
doaj +1 more source
NMR evidence for static local nematicity and its cooperative interplay with low-energy magnetic fluctuations in FeSe under pressure [PDF]
, 2017 We present $^{77}$Se-NMR measurements on single-crystalline FeSe under pressures up to 2 GPa. Based on the observation of the splitting and broadening of the NMR spectrum due to structural twin domains, we discovered that static, local nematic ordering ...
Bud'ko, S. L. +5 more
core +5 more sources
Ceiba speciosa (A. St.-Hil.) Seeds Oil: Fatty Acids Profiling by GC-MS and NMR and Bioactivity
Molecules, 2020 This study aimed to evaluate the chemical composition by gas chromatography-mass spectrometry (GC-MS) and Nuclear Magnetic Resonance (NMR) analyses, the antioxidant activities evaluated by different in vitro assays namely 2,2-diphenyl-1-picrylhydrazyl ...
Sergio Rosselli +7 more
doaj +1 more source
Theoretical study of NMR relaxation due to rattling phonons [PDF]
, 2007 We calculate the NMR relaxation rate due to quadrupolar coupling of the nucleus to a local, strongly anharmonic phonon mode. As a model potential for a rattling motion we consider a square-well potential.
Abragam +13 more
core +4 more sources
Beilstein Journal of Organic Chemistry, 2022 The chemical synthesis of the dideuterium-labelled ATP analogue 1-adenosin-5’-yl-3-(3-methylbut-3-en-1,1-d2-1-ol) triphosphoric acid diester (ApppI(d2)) is described.
Petri A. Turhanen
doaj +1 more source
Nature Communications, 2018 β-sheet structure underlies the mechanical properties of spider silk but the mechanism to form β-sheet from soluble silk protein during transition into insoluble fibers has not been elucidated.
Nur Alia Oktaviani +5 more
doaj +1 more source
Synthesis and Characterization of Mannich base Derivative from benzotriazole [PDF]
Kirkuk Journal of Science, 2016 This study include prepared number of new Mannich bases derived from equivalent moles p-hydroxybenzaldehyde with equivalent moles from benzotriazole and primary amines in the ethanol as a solvent.
Fariq Salah Ahmed +2 more
doaj +1 more source
Consoramides A–C, New Zwitterionic Alkaloids from the Fungus Irpex consors
Mycobiology, 2021 In our ongoing search for new secondary metabolites from fungi, a basidiomycete fungus Irpex consors was selected for mycochemical investigation, and three new zwitterionic alkaloids (1-3) and five known compounds (4-8) were isolated from the culture ...
Ji-Yul Kim +6 more
doaj +1 more source
Flow injection analysis NMR (FIA–NMR): a novel flow NMR technique that complements LC–NMR and direct injection NMR (DI–NMR) [PDF]
Magnetic Resonance in Chemistry, 2003 AbstractDetails of a new flow NMR technique, flow injection analysis NMR (FIA–NMR), are presented for the first time. This method blends some aspects of both liquid chromatography–NMR and direct injection NMR, and complements both. FIA‐NMR is shown to be useful as an analytical technique, especially for repetitive analyses, and may also prove useful in
openaire +1 more source
A new structural arrangement in proteins involving lysine NH3 + group and carbonyl
Scientific Reports, 2017 Screening of the Protein Data Bank led to identification of a recurring structural motif where lysine NH3 + group interacts with backbone carbonyl. This interaction is characterized by linear atom arrangement, with carbonyl O atom positioned on the three-
Olga N. Rogacheva +3 more
doaj +1 more source