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 20 of 81 for “"calibration curve"”.
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Varve and event layer chronology of Lake Suigetsu (Japan) back to 40 kyr BP and contribution to the international consensus atmospheric radiocarbon calibration curve
… to the international atmospheric radiocarbon calibration curve (IntCal). The SG06 14C data are based on terrestrial leaf fossils and therefore record atmospheric 14C values directly, avoiding the corrections necessary for the reservoir ages of the marine datasets, which are currently used …
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Analysis of Galvanized Steel Plates Using Glow Discharge-Atomic Emission Spectrometry
… of 900-1200 V; pressure 2.0-2.5 torr, the calibration curve is constructed, so that specific zinc concentration can be assign to the exact depth position in the sample. Several galvanized steel plate samples are tested and the thickness of coating and distribution of zinc in different depth …
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The optimisation of the enzyme linked immunosorbant assay (ELISA) for thyroid peroxidase autoantibodies (TPO) autoantibodies (aAbs)
… made to the TPO ELISA in order to improve its calibration curve gradient. Secondly, the ability of the TPO ELISA to return consistent results over time was analysed and improved. All modifications made to the TPO ELISA during the study were to adhere to practical and economic restrictions made …
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Quantitative Photoacoustic Reaction-Rate Measurements Under Microcomputer Control
… into a 13X zeolite are also presented. A calibration curve for the ruthenium chromophore was prepared by cogrinding tris-(2,2'-bipyridyl)-ruthenium(II) dichloride hexahydrate with various amounts of 600 mesh 13X zeolite. Percent relative standard deviations from 1-8% for 0.2 - 2.7 wt% …
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Electrochemical biosensor based on microfabricated electrode arrays for life sciences applications
… using impedimetric approach. Good antibody calibration curve was obtained for both 10 μm microband and 10 μm microdisc array. For the establishment of the T-2/HT-2 toxin calibration curve, it was found that larger microdisc array dimension was required to produce better calibration curve. …
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Transient oxygen consumption rate measurements with the BDT̳M̳ oxygen biosensor system
… The two measurements were linearly related and a calibration curve was developed so that OBS transient measurements could be converted to OCR. The relationship between the two measurements were similar enough for both cells and islets that the calibration curve seems to be independent of tissue …
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Implementation of An Anthropomorphic Phantom For The Evaluation of Proton Therapy Treatment Procedures
… and compared to the relative stopping power calibration curve. The tissue equivalency for each material was calculated. Two proton treatment plans were created; one which did not correct for material SP differences (Plan 1) and one plan which did correct for SP differences (Plan 2). Film and …
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The relative susceptibility of ferrous alloys to hydrogen embrittlement determined by effective electrolytic hydrogen pressure measurement
… hydrogen pressure. The results also show that a calibration curve of effective hydrogen pressure versus cathodic charging current density must be made for each material in order to determine the proper current density to use in a cathodic charging experiment.
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Iron oxidation in (Mg,Fe)0: Calibration of the Flank method on synthetic samples and applications on natural inclusions from lower mantle diamonds
… from lower mantle diamonds. Up to now a calibration of the flank method is available only for garnets. Initially, the flank method was calibrated for garnets to test the reproducibility of the method on the Jeol XA-8200 electron microprobe in use at Bayerisches Geoinstitut. Results showed …
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Determination of Atrazine Concentration in Freshwaters Using Fluorescence Spectroscopy
… fluorescence spectrophotometer to develop a calibration curve. </p> <p>The calibration concentration curve developed would be used in the future as an analytical technique to determine the concentrations of atrazine in real local water samples collected by the Biology Department at EKU. </p>
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Heat transfer from a circular cylinder in a pulsating crossflow
… occur near the separation point. A convection calibration for the circular foil heat flux gage used in the heat transfer experiments is included. The convection calibration shows a non-linear gage response for a 'hot' gage in a convection environment. This is in contrast to the linear …
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Detecting Copper in Water Using Electrochemiluminescence
… omission were optimized and used to generate a calibration curve that was linear over the 0.1-5 mg/L (ppm) range. The theoretical limit of detection was 6 μg/L (ppb), with a practical limit of detection of 0.1 ppm. The ECL of several metals ions other than copper with dmp and their effects on …
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Determination of Select Metal Ions in Commercially Available Conventional and Organic Baby Foods.
… spectroscopy with the regular standard calibration curve and standard addition method. There was little overall difference in metal content between the conventional and organic foods tested.</p>
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Plant xylem anatomy, dendrochronology and stable carbon isotopes as tools in rainfall reconstruction in Southern Africa
… dates, a suitable distribution of sites and a calibration curve for the species analysed.
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Towards low dose retrospective dosimetry on shelled species
… alanine powder using a specifically developed calibration curve. Characteristic Mn2+ signals were present in the EPR spectra of all studied species. Radiation induced peaks were not detected in shells of any species except terrestrial snails. A dose-response curve for terrestrial snails was …
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Acoustic Tomography and Thrust Estimation on Turbofan Engines
… of flight is shown to be usable along with a calibration curve in order to accurately estimate the thrust of two turbofan engines (1.0-1.5%). In the second, it is shown that acoustic tomography methods that only use the first ray paths to arrive cannot distinguish some relevant propulsion flow …
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Extraction of alcohols from gasoline using solid phase microextraction (SPME)
… of EtOH in gasoline: the method of a standard calibration curve, and the method of standard addition. They are both successful in quantifying the amount of EtOH in gasoline. The relative errors, with the method of standard addition, vary from 5.3% to 14%, while the ones with the method of …
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Determination of ground-water tracer 2,6-difluorobenzoic acid by Gc/Ms
… 2,6-DFBA silyl derivative. A GC/MS instrument calibration curve was established, a C-well water sample was analyzed with this method and results were compared with HPLC analysis which has been used to analyze 2,6-DFBA at the part per billion level in ongoing studies; Since the GC/MS has the …
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Organinių alavo junginių mikroekstrakcija ir dujų chromatografinis nustatymas /
… analytical characteristics (limits of detection, calibration curve linear ranges, repeatabilities) have been determined. Dispersive liquid-liquid microextraction resulted to be the most suitable technique for real samples analysis. This technique has been applied for the analysis of river water …
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Microextraction and gas chromatographic determination of organotin compounds /
… analytical characteristics (limits of detection, calibration curve linear ranges, repeatabilities) have been determined. Dispersive liquid-liquid microextraction resulted to be the most suitable technique for real samples analysis. This technique has been applied for the analysis of river water …
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