Results 21 to 30 of about 778,058 (302)
Journal of Molecular Structure, 2007 Abstract Proton NMR spin–lattice relaxation times T1 were measured for urea as a function of temperature. An activation energy of 46.3 ± 4.7 kJ/mol was extracted and compared with the range of 38–65 kJ/mol previously reported in the literature as measured by different magnetic resonance techniques.
Taylor, Robert E +2 more
openaire +3 more sources
13C-direct detected NMR experiments for the sequential J-based resonance assignment of RNA oligonucleotides [PDF]
, 2010 We present here a set of 13C-direct detected NMR experiments to facilitate the resonance assignment of RNA oligonucleotides. Three experiments have been developed: (1) the (H)CC-TOCSY-experiment utilizing a virtual decoupling scheme to assign the ...
Helena Kovacs +13 more
core +1 more source
NMR analysis of Nile Blue (C. I. Basic Blue 12) and Thionine (C. I. 52000) in solution [PDF]
, 2011 The dyes Nile Blue (C. I. Basic Blue 12, NB) and Thionine (C. I. 52000, TH) were examined in both ionic and neutral forms in different solvents using NMR and UV-visible Spectroscopy to firmly establish the structures of the molecules and to assess the ...
Salvia, Marie-Virginie +5 more
core +4 more sources
Analyzing Pentaerythritol Stearate Homologs with NMR Spectroscopy
Chinese Journal of Magnetic Resonance, 2018 A pentaerythritol stearate sample with unknown composition was analyzed by nuclear magnetic resonance (NMR) spectroscopy (i.e., 1H NMR, quantitative 13C NMR, DEPT135, 1H-1H COSY, 1H-1H NOESY, 1H-13C HSQC and 1H-13C HMBC).
LI Chun-fa +3 more
doaj +1 more source
Proton NMR relaxometry as a useful tool to evaluate swelling processes in peat soils [PDF]
, 2010 Dramatic physical and physico-chemical changes in soil properties may arise due to temperature and moisture variations as well as swelling of soil organic matter (SOM) under constant conditions.
As, H., van +4 more
core +1 more source
900MHz 1H-/13C-NMR analysis of 2-hydroxyglutarate and other brain metabolites in human brain tumor tissue extracts. [PDF]
PLoS ONE, 2018 PURPOSE:To perform in vitro high-resolution 900 MHz magnetic resonance spectroscopy (NMR) analysis of human brain tumor tissue extracts and analyze for the oncometabolite 2-hydroxyglutarate (2HG) and other brain metabolites, not only for 1H but also for ...
Gregory Hyung Jin Park +2 more
doaj +1 more source
Structural Elucidation and NMR Spectral Assignments of Two C19-Diterpenoid Alkaloids
Chinese Journal of Magnetic Resonance, 2018 Two C19-diterpenoid alkaloids, homochasmanine (compound 1) and 14-debenzoylfranchetine (compound 2), were isolated from the roots of Aconitum handelianum. Their structures were elucidated by one-dimensional and two-dimensional nuclear magnetic resonance (
YIN Tian-peng +4 more
doaj +1 more source
Chinese Journal of Magnetic Resonance, 2019 The nucleoside derivative N-isobutyryl-3'-O-(1-fluoro-1,1,3,3-tetraisopropyl-1,3-disiloxane-3-yl)-2'-benzyloxy carbonyl-guanosine (compound 1) was obtained by selectively cleaving the 1,1,3,3-tetraisopropyldisiloxanyl protecting group at 5'-position with
WEI Hui-qiang +5 more
doaj +1 more source
An Efficient Labelling Approach to Harness Backbone and Side-Chain Protons in 1H-Detected Solid-State NMR Spectroscopy [PDF]
, 2015 1H-detection can greatly improve spectral sensitivity in biological solid-state NMR (ssNMR), thus allowing the study of larger and more complex proteins.
Sinnige, Tessa +9 more
core +2 more sources
Spectral data of nicotabaflavonoidglycoside
Data in Brief, 2018 The dataset addressed in this article relates to the research article entitled“Nicotabaflavonoidglycoside, the first example of cembranoid and flavonoid heterodimer from Nicotiana tabacum” (Yang et al., 2018) [1]. The dataset presents the MS4(879-571-421-
Cai-Yan Yang +5 more
doaj +1 more source