Results 211 to 220 of about 213,603 (266)

1H-NMR and 77Se-NMR in CsHSeO4

Solid State Ionics, 2005
Abstract Measurements of 1 H-NMR and 77 Se-NMR have been conducted with CsHSeO 4 , in order to clarify dynamics of proton and SeO 4 tetrahedron which is related to transport of proton below and above T c  = 401 K. An NMR absorption line is observed in 1 H-NMR measurement and its line width decreases with increasing temperature below T c , due
Yukihiko Yoshida, Yasumitsu Matsuo, Seiichiro Ikehata   +2 more
openaire   +1 more source

1H- and 13C-NMR Spectra of Fenobam

Journal of Pharmaceutical Sciences, 1983
Abstract □ 1H- and 13C-NMR data and spectral assignments are reported for fenobam using noise modulated gated, single frequency off resonance, and single frequency selective proton decoupling techniques.
G, Pellizer, F, Rubessa
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1H and 2H NMR mobility in cellulose

Carbohydrate Polymers, 2001
Abstract Mobility of water in cellulose was studied by solid-state 1H and high-resolution 2H NMR as a function of moisture content within the unfreezable moisture range (0–19% dry basis). Measurements of relative mobilities were based on relative intensities, transverse and longitudinal relaxation times and lineshape analysis.
Vittadini E., Dickinson L. C., Chinachoti P.   +2 more
openaire   +3 more sources

1H-NMR characterization of cucumber peroxidases

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1991
Two peroxidase isoenzymes from Cucumber seedlings, one acidic (pI = 4) and one basic (pI = 9), were characterized by 1H-NMR spectroscopy. The NMR spectra were obtained in the native (ferric high-spin) and cyanide ligated (ferric low-spin) forms of both isoenzymes. The NMR spectral comparison of paramagnetically shifted resonances with those of the well
L B, Dugad, H M, Goff, F B, Abeles
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1H NMR Spectroscopy

2000
Electronegative substituents cause a decrease in |J|gem while a double or triple bond next to the CH2 group causes an increase.
Ernoe Pretsch, Philippe Bühlmann, Christian Affolter   +2 more
openaire   +1 more source

1H NMR-based metabolomics and lipidomics of microalgae

Trends in Plant Science, 2021
[No abstract available]
Manisha Nanda, Vinod Kumar, Neha Arora, Mikhail S. Vlaskin, Manoj K. Tripathi   +4 more
openaire   +3 more sources

Quantitative 1H NMR spectroscopy

TrAC Trends in Analytical Chemistry, 2012
Abstract This review illustrates the need to use nuclear magnetic resonance (NMR) spectroscopy for the quantitative analysis of small molecules in their crude forms and in mixtures. We provide the basic concepts of quantitative NMR (qNMR), a brief description of important acquisition and processing parameters responsible for obtaining high-quality ...
Santosh Kumar Bharti, Raja Roy
openaire   +1 more source

1H NMR Spectroscopy

2009
Electronegative substituents cause a decrease in |J|gem while a double or triple bond next to the CH2 group causes an increase.
Ernö Pretsch, Philippe Bühlmann, Martin Badertscher   +2 more
openaire   +1 more source

The 1H NMR spectrum of benzanthrone

Spectrochimica Acta Part A: Molecular Spectroscopy, 1981
Abstract The chemical shifts of all the eleven protons in the 1 H NMR spectrum of benzanthrone have been assigned unambiguously.
A.V.Rama Rao, A. Vaidyanathan
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1H NMR Study of Polyisoprenes

Rubber Chemistry and Technology, 1980
Abstract 1H NMR spectra of polyisoprene were assigned using polymers of isoprene-1,1,4,4-d4, isoprene-1,1,5,5,5-d5, and isoprene-4,4-d2 polymerized with various catalysts. The methylene-proton signal at 2.1 ppm in cis-1,4- and trans-1,4-polyisoprenes was divided into H4- and H1-proton signals; H4 resonated at 2.21 ppm in both cis-1,4
H. Sato, Y. Tanaka
openaire   +1 more source