Results 261 to 270 of about 411,311 (295)
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1H NMR spectroscopy of cytochrome cd1 derivatives
Archives of Biochemistry and Biophysics, 1985Proton nuclear magnetic resonance spectra are reported for cytochrome cd1 from Pseudomonas aeruginosa (ATCC 19429) in several forms including complexes of the ferricytochrome with cyanide, azide, and fluoride, a quasi-apo form in which the noncovalently associated heme d1 has been removed but the covalently bound heme c is retained, and the reduced ...
R, Timkovich, M S, Cork, P V, Taylor
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Complete 1H NMR assignment of cholesteryl benzoate
Steroids, 2018The 750 MHz 1H NMR spectrum of cholesteryl benzoate (1b) could be assigned completely, which means all chemical shifts and all coupling constants, including some long-range values, were established. This task was possible by extracting many approximate coupling constant values in the overlapped spectrum region from an HSQC experiment, and using these ...
Nury, Pérez-Hernández +2 more
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Quantitative 1H-NMR analysis of amniotic fluid
Journal of Pharmaceutical and Biomedical Analysis, 1993Ten amniotic fluid samples (36-38 weeks gestation) are analysed by NMR spectroscopy. Of the species identified in the spectra, valine (mean 198 microM: SEM 57 microM), lactate (9.73 mM; 2.05 mM), alanine (689 microM: 115 microM), acetate (6.87 mM: 1.54 mM), citrate (363 microM: 59 microM), glucose (4.54 mM: 1.28 mM) indoxyl-sulphate (n = 4,270 microM),
P E, McGowan +5 more
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1H NMR studies on lanthanides substituted transferrins
Journal of Inorganic Biochemistry, 1991The binding of lanthanide(III) ions to human serum apotransferrin has been investigated through 1H NMR spectroscopy. Several well resolved isotropically shifted signals have been observed between 100/-100 ppm for the Tm, Tb, Yb and Dy derivatives. Significant spectroscopic inequivalence of the two metal binding sites has been revealed.
MESSORI, LUIGI, PICCIOLI, MARIO
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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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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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Die 1H-NMR-spektren der alkylhalogenstannane
Journal of Organometallic Chemistry, 1968Abstract 1 H-NMR-spectra of methyl- and ethylhalostannanes are reported, analyzed and discussed in comparison with those reported of other alkyl compounds of the main Group IV elements. The neighbour-anisotropy effect is recognized as the dominating influence on the relative position of signals in the 1 H-NMR-spectra of alkylhalostannanes.
J. Lorberth, H. Vahrenkamp
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1H NMR METABOLOMSKA ANALIZA MEDA
2022Metabolomika je nova znanstvena disciplina koja proučava kemijske i biokemijske procese koji se tiču cjelokupnog staničnog metaboloma. Spregnuta sa spektroskopijom NMR predstavlja dobru alternativu brojnim analitičkim metodama korištenima u analitici prehrambenih proizvoda. Med je izrazito vrijedna i cijenjena namirnica u cijelom svijetu.
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1H NMR studies of oligosaccharides
1993Abstract Proton NMR is a very valuable technique for the structural analysis of oligosaccharides since it is possible to determine primary sequence as well as three-dimensional structure. In view of their branched nature, there is at present no cyclical degradative chemical or enzymatic sequencing strategy for oligosaccharides which ...
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