Determination of the antisymmetric part of the chemical shift anisotropy tensor via spin relaxation in nuclear magnetic resonance
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We perform first-principles molecular dynamics of liquid oxygen in which the magnetic structure evolves according to a generalized density-functional scheme allowing for noncollinear spin configurations. We investigate both structural correlations between ...
In my thesis I shall focus on the development of new NMR experimental methods to study structure and internal motions of two kinds of biological polymers, viz. proteins and nucleic acids. I shall investigate the anisotropic local motions of peptide planes ...
In this paper some effects of dynamical coupling between two interaction-carrying vectors on the internal auto- and cross-correlation functions are investigated in the limit of small amplitude motions. A linearized Langevin approach allows the derivation o ...
The reaction of [Ta(=CHtBu)(CH(2)tBu)(3)] or [CpTa(CH3)(4)] with a silica partially dehydroxylated at 700 degreesC gives the corresponding monosiloxy surface complexes [(=SIO)Ta(=CHtBu)(CH(2)tBu)(2)] and [(=SiO)Ta(CH3)(3)Cp] by eliminating a a-bonded lig ...
In the present paper, we present a complete characterization of the propylene sulfide-ethylene glycol triblock copolymers (PPS-PEG) at a mol. level, and as lyotropic aggregates, with the precise localization of the hydrophilic/hydrophobic border of their v ...
On page 2543, the bipolar scheme uses two gradient pulses for encoding, and two other gradient pulses for decoding. Thus, Equation 1 should be S/S0 = exp{-D4k2(D + 6t)}, rather than S/S0 = exp{-Dk2(D + 6t)}, as published. The incorrect expression would lea ...
We performed an Eu153 and Eu151 NMR study of EuO and Gd doped EuO using a home-made spectrometer designed to measure signals with fast spin-spin relaxation times. We determined and described the broadening mechanisms giving rise to the structure in the lin ...
A new NMR method has been designed for the measurement of the longitudinal relaxation rates of both donor and acceptor nitrogen-15 nuclei in Watson-Crick base pairs in 15N-enriched nucleic acids. The expt. was applied to a 22-nucleotide RNA hairpin. The le ...
In the recent years Magnetic Resonance Imaging has evolved into one of the most powerfuldiagnostic techniques in medicine, in part thanks to the application of suitable contrastagents. The design of new, more efficient MRI contrast media requires the compl ...
The translational diffusion coeff. of an integral membrane protein/surfactant complex has been measured using a novel pulsed field gradient NMR method. In this new approach, the information about the localization of the mols. is temporarily stored in the f ...