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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"1H Nuclear Magnetic Resonance"”.
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1H Nuclear Magnetic Resonance-Linked Metabolomics Investigations of Broiler Poultry and Human Saliva
1H NMR-linked metabolomics was employed to investigate blood plasma and breast meat muscle from broiler poultry for quality assessment. The purpose of this research is to further explore the metabolomics profile of poultry breast meat muscle and plasma and comprehensively identify their metabolic …
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Thermal degradation of organophosphorus compounds.
… relating to the ultraviolet, infrared, 1H nuclear magnetic resonance spectra and mass spectra of 1,3,5-triazine and phosphorus compounds of relevance to the topic is briefly discussed. The behaviour of heated samples of menazon on paper (one and two dimensional) and thin layer …
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Kinetics of the ligand exchange reactions between bidentate ligands and rriethylenetetramine nickelate (II) and synthesis of boron (III) subphthalocyanines with various boron substitutions
… were characterized by infrared spectroscopy, 1H nuclear magnetic resonance analysis, and high resolution mass spectroscopy.</p>
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Some Aspects of the Chemistry and Petrology of Coking Coals
… to vary with rank and also with petrography. 1H nuclear magnetic resonance spectroscopy confirmed the identity of many of the structures indicated by gas chromatography/mass spectrometry of the initial pyridine soluble material. Significant amounts of high molecular weight material present in …
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Investigations of Iron–Nitrogen Bonding at Synthetic Iron–Sulfur Clusters
… of this redox series using variable-temperature 1H nuclear magnetic resonance spectroscopy reveals that oxidation events are primarily centered at the imido fragment, which takes on an iminyl ([NAr]•−) or triplet nitrene ([NAr]2•) configuration depending on the charge state of the molecule. …
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Nucleation mechanism of crystal formation during antisolvent or cooling induced crystallisation
… on their surfaces. Spectrophotometry, 1H nuclear magnetic resonance (NMR), dynamic light scattering (DLS) and optical microscopy were used to probe the evolution of the system from the transparent solution to a suspension of microcrystals. The nucleation mechanism of antisolvent …
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The development of new methods for the assessment of oxygen radical-mediated oxidative damage to biomolecules with special reference to lipids
… by high-resolution, high-field proton (1H) nuclear magnetic resonance (NMR) spectroscopy, combined with the use of powerful iron(III) chelators (desferrioxamine and nitrilotriacetate), and the iron(lII)-binding protein apotransferrin in order to 'speciate' catalytic, low-molecular-mass …
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Protein production and applications of NMR in pharmaceutical sciences
… microparticles using a Varian 400 MHZ 1H nuclear magnetic resonance (1H-‐NMR) spectrometer is introduced. Various analytical performance parameters such as linearity, precision, accuracy, limit of quantification (LOQ), limit of detection (LOD), and robustness were validated according …
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Drug-cyclodextrin complexes: an approach to enhance the solubility and dissolution properties of poorly soluble drugs
… scanning calorimetry, X-ray powder diffraction, 1H-nuclear magnetic resonance (nuclear Overhauser effect correlation spectroscopy and inversion recovery T1 measurement experiments), and dissolution rate studies. Inclusion yield (%) studies of econazole base into α- and methyl-β-cyclodextrin were …
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A Study of some Complexes of Thallium and Tellurium
… of TIX, (tripyam) was obtained with the help of 1H nuclear magnetic resonance, diffuse reflectance spectroscopy and infra-red spectroscopy. The structure was "octahedral" with C3, symmetry. The structure of the complex TIX, (tripyam) DMF was also deduced, When DMF was co-ordinated into the …
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Metabolic Profiling of Genetically Modified Potato Periderm Tissues
… gas-chromatography mass-spectrometry (GC-MS) and 1H nuclear magnetic resonance spectroscopy (NMR). The solid interface was analyzed by solid-state NMR. FHT deficiency induced significant changes in the metabolite pool of both polar and non-polar extracts from native periderms. In particular, FHT …
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Structure-activity relationship studies of 2-phenylbenzimidazoles and related organometallic complexes as antiplasmodial agents
… synthesised were fully characterised by 1H and 13C{1H} Nuclear Magnetic Resonance (NMR) Spectroscopy, Elemental Analysis and Mass Spectrometry. The synthesised 2-phenylbenzimidazoles and metal complexes were screened in vitro against the chloroquine-sensitive NF54 strain and selected …
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Modelling and validation of bacterial O-antigen conformations: ring puckering in Shigella flexneri 7a and 7b O-antigens as a case study
… especially when experimental methods, such as nuclear magnetic resonance, are used for verification of modelling results. Here we use a combination of molecular modelling and 1H nuclear magnetic resonance spectroscopy experiments to probe the O-antigen conformations of S. flexneri 7a and 7b. …
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Selectivity in host-guest compounds
… to form, and then subjecting these crystals to 1H nuclear magnetic resonance (NMR) spectroscopy or gas chromatography (if guest molecules were indistinguishable by NMR). In some cases, the kinetics of host-guest compound formation and guest exchange was monitored by powder XRD, using an in-house …
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A metabolomics investigation of in utero antiretroviral exposure to neonates
… describes the use of an untargeted metabolomics [1H nuclear magnetic resonance (NMR) spectrometry] to analyse cord blood from HIV-ART exposed and unexposed neonates, as well as serum from healthy infants. Decreased levels of 3-hydroxybutyrate and alarming increase in hypoxanthine, indicators of …
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All Inorganic Colloidal Perovskite Nanocrystals for Optoelectronic Applications
… in the optical bandgap. Through detailed 1H nuclear magnetic resonance (NMR), X-ray photoemission spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) measurements, I show that the cause for these effects is that higher-polarity …
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Relationship of the glycation gap to diabetes and its complications, and the potential role of adipokines
… negative (G0) = 34 and GGap positive (G1) = 20. 1H- Nuclear Magnetic Resonance (NMR) was used to analyse the samples and measuring the different peaks. Glycoscale was used for glycoproteins while liposcale was used for lipoproteins. Laboratory analyses were carried out to ascertain the …
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Tailored Chain Sequences of Brominated Syndiotactic Polystyrene Copolymers via Post-Polymerization Functionalization in the Heterogeneous Gel State
… The degree of bromination was evaluated using 1H nuclear magnetic resonance (NMR) spectroscopy. Powder-state bromination produced copolymers with a limited degree of functionalization of up to 12 mol% Br and required a threefold longer reaction time than the gel-state method conducted on the …
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COMPARATIVE EVALUATION OF 1H NMR SPECTROSCOPY AS A NOVEL TOOL FOR ASSESSING STRESS WITH TRADITIONAL METHODS OF BLOOD CORTICOSTERONE LEVELS AND HETEROPHIL LYMPHOCYTE RATIO IN BROILER CHICKENS (GALLUS DOMESTICUS)
… and animal welfare in the poultry industry. 1H Nuclear Magnetic Resonance spectroscopy (NMR) may provide insightful mechanistic information on effects of stressors by simultaneously measuring a large number of low molecular weight endogenous metabolites that may potentially be used as …
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The Effect Of Proalgazyme And Its Subfractions On Lipid Metabolism In Diet Induced Hypercholesterolemic Hamsters: Correlation With Plasma Metabolomic Profile
… with plasma metabolomic profile using 1D 1H NMR spectroscopy and the biologically active fraction has been identified. </p> <p>Further, the study aimed to determine the therapeutic effect of the active fraction of PAZ. For this, 40 male Golden Syrian hamsters were fed a high fat diet for 4 …
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