One of the fundamental problems in cardiovascular research is concerned with the relation between biochemical energy provision and demand of the myocardium in healthy and diseased states. Until recently most of the available biochemical information was a result of indirect or highly invasive measurements. During the past nine years we have shown that nuclear magnetic resonance spectroscopy is a...

New Schiff bases derivatives from lauric acid were synthesized through the condensation of dodecane methyl ester with hydrazine to give corresponding hydrazide, which react aromatic aldehyde afford dodecanehydrazide-hydrazones and carbon disulfide 1,3,4-oxadiazole-2-thion. The chemical structures confirmed by numerous characterization methods; including Infrared, Ultraviolet-Visible, 1H 13C Nuc...

Magnetic resonance spectroscopy (MRS) is a non-invasive technique useful both in research and neuroclinical evaluation. It relies on the same physical principles of magnetic resonance imaging providing information on chemical compounds in vivo. MRS uses the magnetic properties of several nuclei such as 13C, 31P and 19F, although the 1H is the most common due to its abundance and magnetic resona...

The high-resolution one- and two-dimensional proton nuclear magnetic resonance (1H-NMR) characterization of seminolipid from bovine spermatozoa is presented. The 1H-NMR data was confirmed by gas-liquid chromatography-mass spectrometric analysis of the partially methylated alditol acetates of the sugar unit, mild alkaline methanolysis of the glyceryl ester, mobility on normal phase and diphasic ...

A set-up especially designed for semi-simultaneous measurements of 1H, 23Na and 35Cl in ordinary cementitious materials using nuclear magnetic resonance was built. This setup makes use of the main field of a whole body magnetic resonance imaging system (Philips Intera), which has allowed us to combine two measurement setups into one, i.e., a 23Na/35Cl and a 1H insert. This 1.5 T field was chose...

The most common means of identification of gamma-hydroxybutyrate (NaGHB) involves using Fourier transform infrared spectroscopy (FTIR) or gas chromatography-mass spectrometry (GC-MS) of a suitable derivative. However, these methods may be complicated by possible shifts in chemical equilibrium between gamma-hydroxybutyric acid (GHB), GHB salts and the precursor lactone, gamma-butyrolactone (GBL)...

Prenylated 1,3-dihydroxyxanthone has been successfully synthesized using Prenyl bromide and KOH. Characterization of the compound Infra Red (IR) Nuclear Magnetic Resonance (1H-NMR) showed that monosubstituted c-prenylation was occurred at carbon number 2 to form 1,3-dihydroxy-2-prenylxanthone. The synthesis result a yellow-brown paste with yield 43.09%. This prenylated had moderate antibacteria...

The present paper describes the synthesis of some symmetrical substituted 1-(2-chloroethyl) pyrazole-based dichalcogenides and monochalcogenides by reacting different 3,4,5-trisubstituted 1-(2-chloroethyl) pyrazole derivatives with in situ prepared Na2E2 (E = S, Se, Te) and sodium hydrogen selenide, respectively. All compounds were fully characterized by different spectroscopic techniques, name...

The purpose of the study is to form taste combined minced fish and ready-made culinary products. Low-field nuclear magnetic resonance (1H-NMR) have been accepted widely as a non-destructive analytical technique in food processing technology their sensitivity, non-invasiveness, rapidness, cost-effectiveness. Moreover, ability provide real-time information on products during after has linked use ...

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...