Results 41 to 50 of about 489,673 (196)

A Solid State \u3csup\u3e13\u3c/sup\u3eC-NMR Study of Diamonds and Graphites [PDF]

, 1978
The 13C-NMR spectra of gem quality and industrial diamonds show two resonances with the more intense resonance at high field. Two resonances are also shown in 13C-NMR spectra of various graphites; however, the low field resonance is of greater intensity ...
Ehlert, Thomas C., Haworth, Daniel T., Wilkie, Charles A.   +2 more
core   +1 more source

Interplay between Co-3d and Ce-4f magnetism in CeCoAsO [PDF]

, 2010
We have investigated the ground state properties of polycrystalline CeCoAsO by means of magnetization, specific heat and solid state NMR. Susceptibility and specific-heat measurements suggest a ferromagnetic order at about, $T_\mathrm{C}$=75 K.
Baenitz, Michael, Geibel, Cristoph, Jesche, Anton, Krellner, Cornelius, Mazumdar, Chandan, Poddar, Asok, Sarkar, Rajib   +6 more
core   +2 more sources

Spin-modulated quasi-1D antiferromagnet LiCuVO_4

, 2007
We report on magnetic resonance studies within the magnetically ordered phase of the quasi-1D antiferromagnet LiCuVO_4. Our studies reveal a spin reorientational transition at a magnetic field H_c1 ~ 25 kOe applied within the crystallographical (ab ...
Assmus, W., Buettgen, N., Prokofiev, A., Prozorova, L. A., Svistov, L. E., von Nidda, H. -A. Krug   +5 more
core   +1 more source

Nuclear magnetic resonance based structure of the protoberberine alkaloid coralyne and its self-association by spectroscopy techniques

Journal of Pharmaceutical Analysis, 2019
Coralyne is an important alkaloid due to its anti-cancer and other medicinal properties. It targets DNA in cells and acts as human topoisomerase-I poison, telomerase inhibitor and nucleic acid intercalator.
Kumar Padmapriya, Ritu Barthwal
doaj   +1 more source

Magnetization profiles and NMR spectra of doped Haldane chains at finite temperatures

, 2000
Open segments of S=1 antiferromagnetic spin chains are studied at finite temperatures and fields using continuous time Quantum Monte Carlo techniques. By calculating the resulting magnetization profiles for a large range of chain lengths with fixed field
A. P. Ramirez, B. B. Beard, C. D. Batista, C. D. Batista, C. Payen, E. Polizzi, E. S. Sørensen, E. S. Sørensen, E. S. Sørensen, F. Alet, F. D. M. Haldane, F. D. M. Haldane, F. Tedoldi, G. E. Granroth, H. G. Evertz, H. J. Schulz, H. Onishi, I. Affleck, I. Affleck, J. P. Renard, J. P. Renard, J. P. Renard, K. Harada, L. C. Brunel, L. P. Regnault, M. Hagiwara, M. Hagiwara, M. Hagiwara, M. Kolb, M. P. Nightingale, O. Golinelli, O. Golinelli, R. Botet, R. Botet, S. H. Glarum, S. Ma, S. Miyashita, S. R. White, S. R. White, T. Kennedy, W. J. L. Buyers, W. Lu, W. Palme, Y. J. Kim   +43 more
core   +2 more sources

¹³C NMR metabolomics: applications at natural abundance. [PDF]

, 2014
(13)C NMR has many advantages for a metabolomics study, including a large spectral dispersion, narrow singlets at natural abundance, and a direct measure of the backbone structures of metabolites.
Clendinen, Chaevien, Edison, Arthur, Hahn, Daniel, Lee-McMullen, Brittany, Stupp, Gregory, Vandenborne, Krista, Walter, Glenn, Williams, Caroline   +7 more
core   +3 more sources

Interpreting 2D-NMR spectra using Grad-CAM [PDF]

Research Ideas and Outcomes
It has been shown that it is possible to train a (simple) neural network to classify nuclear magnetic resonance spectra by a substructures either being part of the chemical structure measured or not.
Enriko Kroon, Ricardo Borges, Rômulo de Jesus, Stefan Kuhn   +3 more
doaj   +3 more sources

The Solid State \u3csup\u3e13\u3c/sup\u3eC-NMR Spectra of Some Carbides [PDF]

, 1978
The utility of NMR spectroscopy to the study of liquids or solids dissolved in liquids is well known. This technique has been used infrequently to studies in the solid state[I,2]. Work has been done on diamond, graphite and coa113-6].
Haworth, Daniel T., Wilkie, Charles A.
core   +1 more source

The Conformations of 1-Thiacyclooctan-3-One Dynamic Nuclear Magnetic Resonance and Force-Field Calculation [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1995
The 1H and natural-abundance 13C-NMR spectra of 1-thiacyclooctan-3-one (1) have been measured from 25 to -100°C. Coalescence is observed in the 1H-NMR spectra of (1) at about -80°C, and attributed to ring inversion in a boat-chair conformation, which is ...
Mehran Ghiaci, Ahmad Reza Massah
doaj  

PFT-13C-Kernresonanz von Ribofuranosiden und Ribopyranosiden

CHIMIA, 1972
The 13C-signals due to the carbon atoms of the anomeric furanoses and pyranoses in the pulse Fourier transform 13C-nmr spectra of D-ribose and 2-deoxy-D-ribose are assigned.
Eberhard Breitmaier, Günther Jung, Wolfgang Voelter   +2 more
doaj   +1 more source