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 12 of 12 for “"Quantitative Extraction"”.
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Quantitative Extraction of Bias Stress Parameters in Thin Film Transistors
Thin film transistors (TFTs) are widely used in active matrix displays and are finding applications in emerging areas of large-area electronics, such as logic. A key limitation of the practical applications of TFTs is their inherent instability under bias stress. The two leading semiconducting TFT …
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Evaluation of conditions for quantitative recovery of a drug from animal feed using supercritical fluid CO₂ extraction
Supercritical fluid extraction (SFE) continues to be explored as a feasible alternative to traditional Soxhlet and other types of extraction. In many cases SFE is cleaner, faster, and less expensive than the traditional types of extractions. This investigation has focused on the evaluation of …
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Structure and metabolism of bovine aortic proteoglycans
… the fibrous elements of the matrix which make quantitative extraction difficult. In recent years reports of characterizations of arterial proteoglycans have appeared in the literature but they differ markedly in several respects. In order to minimize such variables, proteoglycans isolated from …
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ΜΕΛΕΤΗ ΑΝΑΚΤΗΣΕΩΣ ΜΕΤΑΛΛΩΝ ΑΠΟ SCRAP
… DISSOLUTION OF THE SCRAP. ON THE SOLVENT EXTRACTION STAGE, VERSATIC 6, 9, 10 WERE EXAMINED AS ORGANIC EXTRACTMENTS IN RELATION TO THE PH OF THE AQUEOUS PHASE, THE TEMPERATURE, THE TIME AND THE VOLUME OF ORGANIC TO AQUEOUS PHASE. ADVANTAGES OF THE APPLICATION OF VERSATIC 6 WAS PROVED TO BE …
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Development of multimodal spectroscopy for the detection of vulnerable atherosclerotic plaques
… physical motivation for MMS, the framework of quantitative extraction of spectral parameters, the spectral probes that enable the efficient collection of data, a clinical instrument able to provide real-time diagnosis, and, finally, a clinical implementation of the entire methodology. The …
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Solvent extraction of cobalt and nickel carboxylates
This thesis is concerned with the solvent extraction of ternary complexes of cobalt(II) and nickel(II). In a preliminary survey, the extraction of nickel(II) by a variety of systems containing carboxylic acids in the presence of 1,2-diaminoethanes was investigated in order to determine the extent …
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A Study of the Ecological Factors Influencing the Efficiency of the Activated Sludge System for Treating Organic Wastes
… of oxygen input. Methods were developed for the quantitative extraction and study of bacterial exocellular polymers from activated sludge, and these polymers were shown to be directly concerned in the flocculation of bacteria and in the destabilisation and adsorption of colloidal and particulate …
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Analysis of Ethoxyquin and its Oxidation Products using Supercritical Fluid Extraction and High Performance Liquid Chromatography with Chemiluminescent Nitrogen Detection
… in various food products and animal feeds. The extraction and determination of ethoxyquin is becoming increasingly important as products, which are labeled as "natural" are becoming more common. The present method of determination only ensures that ethoxyquin values are below 10-20 parts per …
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Supercritical Fluid Extraction Directly Coupled with Reversed Phase Liquid Chromatography for Quantitative Analysis of Analytes in Complex Matrices
… for on-line coupling of Supercritical Fluid Extraction (SFE) with High Performance Reversed Phase Liquid Chromatography (HP-RPLC), and to explore its ability for quantitative analysis of analytes in different matrices. First, a simple interface was developed via a single one six-port …
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Coupled solid phase extraction-supercritical fluid extraction on-line gas chromatography of explosives from water
A method has been developed for the quantitative extraction of nitrotoluenes (2,6-dinitrotoluene, 2,4-dinitrotoluene, and trinitrotoluene) from water. Three types of solid sorbents were investigated: two 47 mm Empore disks™ - octadecylsilane (C18) and styrene-divinylbenzene (SDVB); and one …
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Strategies for the analytical determination of thermally labile sulfur-containing environmental pollutants
… ways: 1) the development of supercritical fluid extraction procedures suitable for these compounds and 2) the interface of a sulfur-selective detector to chromatographic techniques appropriate for thermally labile compound analysis. Supercritical fluids, particularly CO₂, have recently been shown …
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Laser beam induced current studies of Hg1-xCdxTe photodiodes
… significantly develops the physical theory, and quantitative application of LBIC for the characterization of photodiodes. Numerical modeling of the LBIC problem using the full drift-diffusion and φ,ψ treatment of an n-on-p photodiode together with supporting experimental measurements have …