Results 71 to 80 of about 489,673 (196)

Quantitative Structure-Activity Relationship of Humic-Like Biostimulants Derived From Agro-Industrial Byproducts and Energy Crops

Frontiers in Plant Science, 2020
Humic-like substances (HLSs) isolated by alkaline oxidative hydrolysis from lignin-rich agro-industrial residues have been shown to exert biostimulant activity toward maize (Zea mays L.) germination and early growth.
Davide Savy, Yves Brostaux, Vincenza Cozzolino, Vincenza Cozzolino, Pierre Delaplace, Patrick du Jardin, Alessandro Piccolo, Alessandro Piccolo   +7 more
doaj   +1 more source

Magnetic structure of azurite above the 1/3 magnetization plateau

, 2011
The transition from the 1/3 magnetization plateau towards the saturation magnetization in azurite has been studied by low-temperature, high-magnetic-field, high-frequency proton nuclear magnetic resonance (NMR).
Aimo, F., Berthier, C., Horvatic, M., Klanjsek, M., Krämer, S.   +4 more
core   +1 more source

Structure characterization with NMR molecular networking

Communications Chemistry
Nuclear Magnetic Resonance (NMR) is among the most widely used techniques for structure determination, yet automated workflows remain underdeveloped compared to mass spectrometry.
Cailum M. K. Stienstra, Jaegun Song, David Healey, Gennady Voronov, Eric Gardner, Abhishek Patel, Venkat Macherla, Christoph A. Krettler, Tobias Kind, Pieter C. Dorrestein, Daniel Domingo-Fernández   +10 more
doaj   +1 more source

The charge ordered state in half-doped Bi-based manganites studied by $^{17}$O and $^{209}$Bi NMR

, 2005
We present a $^{209}$Bi and $^{17}$O NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi$_{0.5}$Sr$_{0.5}$MnO$_{3}$ and Bi$_{0.5}$Ca$_{0.5}$MnO$_{3}$.
A. Gerashenko, A. Pogudin, A. Trokiner, A. Yakubovskii, D. Khomskii, E. Wollan, G. Carter, J. S. Ahn, K. Kumagai, K. Mikhalev, S-W. Cheong, S. Fraga, S. Verkhovskii, V. Ogloblichev, Y. Furukawa, Yu. Piskunov   +15 more
core   +1 more source

NMR data for the hydroxyl groups detected by NOESY spectra in sesquiterpene lactones

Data in Brief, 2019
In this article we present the correlations observed in the NOESY spectra, which provide direct and unequivocal detection of hydroxyl groups occurring in the chemical structures of three sesquiterpene lactones - a germacranolide (8α-(E)-4 ...
Jaromir Budzianowski, Joanna Nawrot, Gerard Nowak   +2 more
doaj   +1 more source

NMR-based metabolomic approach to estimate chemical and sensorial profiles of olive oil

Computational and Structural Biotechnology Journal
This study investigates the potential of 1H NMR spectroscopy for predicting key chemical and sensory attributes in olive oil. By integrating NMR data with traditional chemical analyses and sensory evaluation, we developed multivariate models to evaluate ...
Gaia Meoni, Leonardo Tenori, Francesca Di Cesare, Stefano Brizzolara, Pietro Tonutti, Chiara Cherubini, Laura Mazzanti, Claudio Luchinat   +7 more
doaj   +1 more source

Photoelectrocatalytic pretreatment enhances NMR spectral quality of sulfated polysaccharides over acid degradation

Carbohydrate Polymer Technologies and Applications
Although nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical tool, obtaining high-resolution NMR spectra of some high-molecular-weight and viscous polysaccharides remains challenging.
Yunning Yang, Chen Song, Xiaona Sun, Zhejin Chen, Tong Wu, Chunqing Ai, Fanhua Kong, Shuang Song   +7 more
doaj   +1 more source

Tunnel Effect in Widezone Crystals with Proton Conductivity [PDF]

Журнал нано- та електронної фізики, 2014
The spectrum of thermally stimulated depolarization currents, dielectric losses, thermally stimulated luminescence, IR transmission and absorption spectra and NMR-spectra of protons in widezone hydrogen-bonded crystals had been investigated.
V.M. Timokhin
doaj  

RESSONÂNCIA MAGNÉTICA NUCLEAR DE SUBSTÂNCIAS ORGANOFLUORADAS: UM DESAFIO NO ENSINO DE ESPECTROSCOPIA

Química Nova, 2015
Nuclear magnetic resonance is a technique that is widely used for elucidating and characterizing organic substances. Organofluorine substances have applications in many areas from drugs to liquid crystals, but their NMR spectra are often challenging due ...
Frederico Silva Castelo Branco, Bárbara V. Silva, Gabriel Freitas do Rio, Mábio João Santana, Luiz Henrique Keng Queiroz Júnior, Angelo C. Pinto, Núbia Boechat, Luciano Morais Lião   +7 more
doaj   +1 more source

Correlation length in cuprates deduced from the impurity-induced magnetization

, 2004
We report a new multi-nuclei based NMR method which allows us to image the staggered polarization induced by nonmagnetic Li impurities in underdoped O6.6 and slightly overdoped O7 YBa2Cu3O6+y above T_C.
A. J. Millis, H. Alloul, J. Bobroff, M. Gabay, M. Takigawa, N. Nagaosa, R. Kilian, S. Ouazi, V. Barzykin, W. A. MacFarlane   +9 more
core   +2 more sources