Results 221 to 230 of about 213,603 (266)
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1H-NMR of human saliva. An application of NMR spectroscopy in forensic science
Forensic Science International, 19871H-NMR was applied to the study of metabolites in human saliva specimens. Acetate, lactate, ethanol, glucose and some other substances were simultaneously identified and quantitated from the 1H-NMR spectra of saliva specimens treated with D2O. These experiments demonstrated the value of 1H-NMR as an analytical method in the field of forensic science ...
H, Harada, H, Shimizu, M, Maeiwa
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1H-NMR assay of phosphatidylcholine and phosphatidylethanolamine in AL721
Journal of Pharmaceutical and Biomedical Analysis, 1990A 1H-NMR based method has been developed for the assay of phosphatidylcholine (PC), and phosphatidylethanolamine (PE) in AL721. The assay was based on the comparison of NMR signal intensities of the choline and the ethanolamine moiety of PC and PE, respectively, to the signal of imidazole, the internal standard. The assay was reliable and more accurate
A P, Cheung, L L, Olson
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1990
Proton nuclear magnetic resonance (1H-NMR) provides a sensitive means to detect biochemical changes in living systems (Ackerman et al 1981, Gadian 1982). The usefulness of 1H-NMR for in vivo studies has been shown in hypoxia (Behar et al 1983), hypoglycemia (Behar et al 1985), seizures (Petroff et al 1986), and ischemia (Gadian et al 1986, Crockard et ...
G. A. Rosenberg +4 more
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Proton nuclear magnetic resonance (1H-NMR) provides a sensitive means to detect biochemical changes in living systems (Ackerman et al 1981, Gadian 1982). The usefulness of 1H-NMR for in vivo studies has been shown in hypoxia (Behar et al 1983), hypoglycemia (Behar et al 1985), seizures (Petroff et al 1986), and ischemia (Gadian et al 1986, Crockard et ...
G. A. Rosenberg +4 more
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1H-NMR and 13C-NMR Spectral Assignments of Spiramycins I and III
Pharmaceutical Research, 1994The spiramycins (1a-1c) are 16-membered macrolide antibiotics produced by the bacteria Streptomyces ambofaciens (1) (Scheme I). This series of compounds shows gram-positive antibacterial activity as well as antimicrobial activity against both Toxoplasma gondii and Cryptosporidium, two protozoans which can result in potentially fatal opportunistic ...
Ramu, Kumar +4 more
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Complete 1H and 13C NMR spectra of pregnenolone
Steroids, 1995Assignments for signals from 1H and 13C in the NMR spectra of pregnenolone (1), 16-dehydropregnenolone (2), and the 3-acetate of 1 (3) were validated by two-dimensional correlated spectroscopy (2D COSY) and heteronuclear single quantum coherence (HSQC).
Z, Szendi, P, Forgó, F, Sweet
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Lipid Profiling Using 1H NMR Spectroscopy
2019Lipid profiling, which includes fatty acids, phospholipids, glycerides, and cholesterols is extremely important because of the essential role lipids play in the regulation of metabolism in animals. 1H-NMR-based protocols for high-throughput lipid analysis in complex mixtures have been developed and applied to biological systems.
Miriam, Gil +3 more
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1992
1H NMR spectroscopy can be used for the characterization and classification of lignins and determination of lignin structure. Ludwig (1971) reviewed the literature dealing with the 1H NMR spectroscopy of lignins through 1968, and a comprehensive 1H NMR study of lignins and lignin model compounds was published in 1964 by Ludwig et al. (1964a,b). In this
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1H NMR spectroscopy can be used for the characterization and classification of lignins and determination of lignin structure. Ludwig (1971) reviewed the literature dealing with the 1H NMR spectroscopy of lignins through 1968, and a comprehensive 1H NMR study of lignins and lignin model compounds was published in 1964 by Ludwig et al. (1964a,b). In this
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Analiza motornih benzina 1H NMR spektrometrijom
2006Prema zahtjevima norme, koja se odnosi na zahtjeve i metode ispitivanja bezolovnih motornih benzina (EN 228:2004), dozvoljena količina benzena u motornim benzinima je svega 1vol.%, s tendencijom smanjivanja njegove količine, što zahtjeva sve osjetljivije analitičke postupke određivanja, kao i validirane metode određivanja.
Srića, Vlasta +3 more
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