Proton magnetic resonance shifts in (bis(cyclooctatetraenyl)uranium(IV)

magnetic resonance imaging in dentistry

چکیده ندارد.

Application of lanthanide induced shifts in proton magnetic resonance spectroscopy of juvenile hormones.

A downfield shift of proton signals up to 9 ppm is induced in the 1H NMR spectra of juvenile hormone I (methyl 3,11-dimethyl-10,11-cis-epoxy-7-ethyl-2-trans, 6-trans-tridecadienoate) and III (methyl 10,11-epoxy-2-trans, 6-trans-farnesoate) by the lanthanide complex Eu(fod)3. A plot of induced shift vs the ratio of [LSR]/[substrate] shows a good linear correlation for the range 0.3--1.0 mole rat...

Assessment of Cerebellar Metabolites Levels in Athletes Compared to Non-Athlete by Proton Magnetic Resonance Spectroscopy

Background: Adaptability to exercise training can increase the plasticity of the brain, and whether this can be due to a beneficial change in the neurometabolites, is uncertain. The purpose of this study was to evaluate basal metabolic concentrations of cerebellum, including N-acetyl aspartate (NAA) and Cholin(Cho) in athletes and compare them with non-athlete subjects. Materials and Methods: I...

Proton Nuclear Magnetic Resonance Spectroscopy

Brain Proton Magnetic Resonance Spectroscopy

Magnetic resonance (MR) spectroscopy is an analytical method used in chemistry that enables the identification and quantification of metabolites in samples. It differs from conventionalMR imaging in that spectra provide physiologic and chemical information instead of anatomy. MR spectroscopy and MR imaging have their origin in nuclear magnetic resonance (NMR). NMR was first described in 1946 si...