Global ETD Search
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 8 of 8 for “"homovanillic acid"”.
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Electrical stimulation of reward sites in the ventral tegmental area of the rat increases dopamine transmission in the nucleus accumbens as measured by in vivo microdialysis
… measure dopamine (DA),3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA) in the nucleus accumbens of the rat, prior to, during, and after 15-min periods of electrical brain-stimulation at sites in the ventral tegmental area (VTA) that supported …
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The impact of a protein-rich breakfast on food cravings and reward in overweight/obese 'breakfast skipping' adolescent girls
… in perceived appetite, food cravings, and plasma homovanillic acid (HVA), which is an index of central dopamine production, in overweight/obese 'breakfast skipping' (BS) teen girls. A randomized crossover design was incorporated in which 20 BS girls (age 19[plus or minus]1y; BMI 28.6[plus or …
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Development of Electrochemical Sensors Suitable for In Vivo Detection for Neurotransmitters
… interfering species (ascorbic acid, uric acid, L 3,4 dihydroxyphenylalanine, homovanillic acid, 3 methoxytyramine and 5 hydroxyindoleacetic acid) has also been investigated for future in vivo applications. Selective detection of physiological concentrations of dopamine at the …
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Lignin Transformation and Characterization of Pyrolytic Products
… Our results indicate the formation of guaiacol, homovanillic acid, isoeugenol, 3-methoxyacetophenone, acetovanillone, and vanillin as the main products. GC-MS analysis of the organic extract shows 2-4.8 wt% and 3-15 wt% formation of phenolic compounds at 200 °C and 240 °C, respectively, at 12 MPa …
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The Formation of an Electrochemical Sensor for the Selective Detection of Dopamine
… major interfering compounds, such as ascorbic acid and uric acid, could be effectively blocked. No interference was exhibited from 5-hydroxytryptamine and 5- hydroxyindole acetic acid at low concentrations of DA and the oxidation peaks of DA and acetaminophen were effectively separated with the …
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BIOSENSING DOPAMINE USING LIVING AND DEAD PSEUDOMONAS PUTIDA CELLS
… to dopamine whereas no response was observed for homovanillic acid, oxalic acid and riboflavin. Comparable results were obtained for the dead cell sensor. This study showed conclusively that biosensors prepared with both living and dead cells of Pseudomonas putida PS showed good dopamine sensing. …
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New thin shell silica particles and HILIC phases for liquid chromatography: synthesis, characterisation and functionalisation
… phase for rapid determination (< 1min) of uric acid and creatinine in human urine samples giving calculated concentrations in the range 782-1206 µg/mL and 535-862µg/mL respectively. Percentage recoveries of uric acid and creatinine were evaluated between 86.7-92.1% and 92.7-94.3% and the limit …
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Development and Application of An Integrated GC-MS/MS and GC-IRMS Analytical Approach in Food Quality Evaluation
… pods were identified. Among these compounds, homovanillic acid, vanillyl alcohol, and 4-ethoxymethylphenol were identified as promising candidates for compound-specific isotope analysis. In parallel, the possible presence of ethyl vanillin or its potential precursors in natural vanilla …