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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 17 of 17 for “"spectrophotometric analysis"”.
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Infrared spectrophotometric analysis of serum triglycerides
… above methods and the error and time involved in analysis, the development of a new improved method with the time factor in mind was attempted. The use of infrared spectrophotometry was employed, but without the use of any prior extractions. It is hoped that this technique can give accurate and …
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Differential spectrophotometric analysis of intravenous admixtures containing metaraminol with selected corticosteroids
… purpose of this study to demonstrate the use of spectrophotometric analysis to detect the occurrence of chemical interactions between two components of an intravenous admixture.</p>
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Spectrophotometric and microbiological determination of the stability of sodium ampicillin as affected by pH
… of this study was to test the validity of a spectrophotometric analysis of ampicillin, employing ultraviolet spectrophotometry to determine degradation of ampicillin at specific pH’s. All attempts were made to stimulate a clinical situation by adjusting the concentration, temperature, and …
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Effectiveness of Resin Infiltration and Mi Paste Cpp-Acp in Masking White Spot Lesions
… and thus the appearance of WSLs using spectrophotometric analysis. Sixty extracted human third molars were partially demineralized to create artificial WSLs and randomly divided into a control (artificial saliva) and two treatment groups. A spectrophotometer (VITA Easyshade® compact) …
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Studies on cytochromes and electron transport in Methanosarcina thermophila strain TM-1
… in Methanosarcina thermophila were characterized spectrophotometrically using chemical and physiological reactants. This analysis revealed two heme centers, one of which was only reduced by Na₂S₂O₄ or carbon monoxide. Partially purified cytochromes were found to be present in a complex and were …
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Solubility enhancement of poorly water soluble drugs using liposome technology
… Drug loading was assessed using HPLC and UV spectrophotometric analysis. Preliminary studies focused on the influence of bilayer composition on drug loading to obtain an optimum cholesterol concentration. This was followed up by studies investigating the effect of longer alkyl chain lipids, …
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Assessing Spray Deposition and Weed Control Efficacy from Aerial and Ground Equipment in Managed Turfgrass Systems
… needed. A python-based spray deposition pattern analysis tool, SprayDAT, was developed to estimate spray quality utilizing a cost-effective continuous sampling technique involving digital soand spectrophotometric analysis of blue colorant stains on white Kraft paper. This technique cost 0.2 cents …
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Clinical review and experimental evaluation of tumour M2-pyruvate kinase in pancreatic cancer
… kinase, in GI cancer and carried out a meta-analysis of the clinical data on pancreatic cancer. Experimental work evaluated the measurement of M2-pyruvate kinase in human pancreatic cancer cell lines with altered microenvironment (hypoxia, acidic pH or glucose-deprived condition). Tumour …
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Antimicrobial Photodynamic Therapy in Clinical Dentistry: Unravelling the Mechanisms and Exploring Hidden Benefits
… antimicrobial action and photobiomodulation. The spectrophotometric analysis performed as part of this thesis in paper #3, illustrates the light attenuation through various photosensitizers and highlights the potential combined beneficial effects of aPDT and PBM. Calculated fluences are proposed …
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Involvement of mitochondrial dysfunction during transforming growth factor β1-induced senescence-like growth arrest of MvlLu cells
… potential were analyzed by flow cytometric analysis. The activities of mitochondrial respiratory complex were analyzed by spectrophotometric analysis and cellular respiration. Expression pattern of proteins were analyzed by immunocytochemistry and immunoblotting. Mitochondrial morphology was …
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Direct oxidative Ammonia-Ammonium salt leaching of sphalerite concentrate from the Gamsberg Mine and study of the catalytic effect of Cu(II) on Zinc extraction
… with an increase in pulp density. Initial slope analysis was used to characterize the leaching kinetics for each particle, providing good linear fits (R2 > 0.99) across all temperatures, ammonia concentrations, Cu(II) concentrations, and oxygen partial pressures. The activation energy was …
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PHOSPHATE ADSORPTION AND DESORPTION ON TWO CONTRASTING SOILS USED FOR LAND TREATMENT OF WASTEWATER
… concentrations were determined by conventional spectrophotometric analysis. Effluent from a conventional secondary treatment facility and the whole soil (all particles < 2 mm) were used in these studies to model the normal situation in land treatment facilities. Concentration changes of solution …
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Characterization of Commercial Pectin Preparations by Spectroscopic and Chromatographic Techniques.
<p>Pectin has a long history as a food additive. However, elucidation of its fine structural and property relationships remains elusive. Recent research has focused on pectin's ability to complex with divalent heavy metals to aid in characterizing it. Commercial pectins of unknown composition were …
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Dissolved organic carbon and colour dynamics in drained and restored blanket peat
… and through time. This challenges the use of spectrophotometric analysis as an indirect method of DOC determination in peat soil waters as the use of a single regression equation resulted in the miscalculation of DOC concentrations by more than 50 %, as it failed to account of the fact that …
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Investigation of the antibacterial activity of selected flavonoids.
… several candidates suitable for antibacterial analysis. The purpose of the present research programme was to determine the range of bacteria against which these agents are effective, to identify suitable conditions for in vitro analysis of the most active compounds, to try and characterise …
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Effetti del chitosano su composti polifenolici in colture cellulari di vite: aspetti molecolari e metabolici
… and cultural medium, were measured by HPLC-DAD analysis and total anthocyanins were quantified by spectrophotometric analysis. Chitosan was effective in stimulating trans-resveratrol endogenous accumulation with a sharp peak at day 4 (exceeding acetic acid and water controls by 36% and 63%, …