The Polymer Diagnostics Section (Code 6122) of the U.S. Naval Research Laboratory (NRL) has expertise in solid state nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI), and nuclear quadrupole resonance (NQR). In 1983, NRL established an interagency agreement with the Federal Aviation Administration (FAA) to advise the FAA on NMR methods to detect explosives. We were aware of ear...

In this paper, a new nano-size ionic liquid (nIL) has been synthesized from D-phenylalanine and oxalic acid (D-Phe-OX) via a simple procedure. The obtained nIL has been characterized by the fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDAX), thermogravimetric analysis (TGA), nuclear magnetic resonance spectroscopy (1</sup...

Abstract To rapidly evaluate and characterize the porosity permeability of shale reservoirs, this study uses Nuclear Magnetic Resonance (NMR) technology to classify T2 spectrums different analyzes correlation between cut-off values main peaks establishes a rapid identification evaluation method for fluid signals reservoirs. Also, area in signal intervals is explored, finally, pore structure cha...

Nuclear magnetic resonance (NMR) technology has advanced significantly over the past few years. After the initial development of threeand four-dimensional NMR spectroscopy, several important improvements on these experiments have been made; these offer significantly higher sensitivity and improved resolution, resulting in additional structural constraints. Other methodological improvements now ...

Four new (1-4), along with six known (5-10) dihydro-β-agarofuran sesquiterpene polyesters were isolated from the whole plants of Parnassia wightiana. The new compounds were structurally elucidated through spectroscopic analysis including UV (Ultraviolet Spectrum), IR (Infrared Spectrum), ¹H-NMR (¹Hydrogen-Nuclear Magnetic Resonance), ¹³C-NMR (¹³Carbon-Nuclear Magnetic Resonance), DEPT (Distorti...

To evaluate the molecular dynamics and regions presented in cinnamon types it was chosen to them without any treatment, for that used low-field nuclear magnetic resonance (NMR) through pulse sequence such as MSE-FID, an NMR time domain, from longitudinal relaxation (with a constant T1), employing inversion-recovery sequence. The results indicate techniques were very good alternative these of sa...

Metabolomics is a rapidly developing branch of science that concentrates on identifying biologically active molecules with potential biomarker properties. To define the best biomarkers for diseases, metabolomics uses both models (in vitro, animals) and human, as well as, various techniques such as mass spectroscopy, gas chromatography, liquid chromatography, infrared and UV-VIS spectroscopy and...

Nuclear magnetic resonance (NMR) is a branch of spectroscopy commonly used for identifying the chemical structure various materials. One areas in which NMR provides accurate data determination nuclear moments. This work reviews experiments with nuclei light elements simple molecules. Since shielding constants from up-to-date quantum calculations are now available, very dipole moments many can b...