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.
Results
Showing 1 to 15 of 15 for “"calibration standards"”.
-
Development of calibration standards for accurate measurement of geometry in microelectromechanical systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
-
Dynamic range characterization of indium-phosphide double-heterojunction bipolar transistors for ultralinear sub-millimeter wave applications
… load-pull measurements using all on-chip calibration standards. The use of all on-chip calibration standards can reduce potential calibration errors caused by cable movement. Also detailed are the suspected physical origins of nonlinearity in Type-I DHBTs, which are not present in …
-
Some aspects of rapid analysis of coal slurries using direct current plasma emission spectrometry
… precluding the use of such solutions as calibration standards. Transport of the coal can be improved by increasing the viscosity of sample and standards, which increases the droplet size from the nebulizer and hence the particle size transportable• The increased droplet size causes a …
-
A calibrated dual-port acoustic Vector Network Analyser
… optics. This thesis presents the design and calibration of an Acoustic Vector Network Analyzer (AVNA), which represents further adaptation of this technology into other engineering fields. This goal requires several developments; a repeatable acoustic waveguide flange/joint, a calibration …
-
A Quantitative Study of Drug Recrystallization in Drug-In-Adhesive Transdermal Patches Using Vibrational Spectroscopy
… This approach uses a novel method of preparing calibration standards and a spectroscopic method to reliably predict crystalline content in DIA patches. Spectroscopic tools, including Raman spectroscopy and near-infrared spectroscopy (NIRS), were used to determine the crystallinity of drug in …
-
Deep penetration magnetoquasistatic sensors
… the model response sufficiently to perform air calibration and absolute property measurement. Replacing the secondary winding with a magnetoresistive sensor allows the magnetometer to be operated at frequencies much lower than ordinarily possible, including static (DC) operation, which enables …
-
2X-Thru, 1X-Reflection, and Thru-Line de-embedding: Theory, sensitivity analysis, and error corrections
… 2X-Thru de-embedding (2XTD) requires much less calibration standards, yet still maintain the high accuracy of de-embedded results. Nevertheless every de-embedding method is based on the rigorous mathematical derivations, the manufacturing variations are inevitable. IEEE P370 committee provided …
-
Procedimentos operacionais padrão dos equipamentos de rotina localizados no Laboratório de Estudos em Química Ambiental (leqa/dq).
… and / or chemical, electric current, equipment calibration, standards used, software instructions, cleaning, among others. For procedures not become heavy and impractical for daily use, due to information overload, we used images of the equipment itself. The verification and approval of SOP was …
-
EXCALIBRATE Bayesian calibration for data-intensive astrophysical experimentation
… by the unprecedented levels of sensitivity and calibration needed to confidently distinguish these millikelvin-level signatures from galactic foregrounds and instrument systematics. In this work we detail the development of a calibration methodology that expands upon the Dicke switching …
-
Development of an alternative synthesis of 2-acetamido-2-deoxy-L-altruronic acid: an unusual sugar found in the O-specific polysaccharide of Shigella sonnei
… needed inter alia for chemical and spectroscopic calibration standards, and as building blocks for preparing oligomeric subunits of the O-polysaccharide antigen for possible incorporation into a synthetic glycoconjugate vaccine. Two synthetic routes were investigated. The first route successfully …
-
The determination of β-endosulfan and endosulfan sulfate in human serum with dialkylphosphate metabolites as urinary markers using LC-MS/MS electrospray ionization
… multiple reaction monitoring as scan mode. Calibration standards and quality control samples for both analyses were prepared in the biological matrix in which the samples for each determination were collected, i.e. serum for the determination of the organochlorine compounds and stripped …
-
Laser ablation ICP spectrometry.
… of using aqueous multielement solutions as novel calibration standards for quantitative analysis of other liquids was not achieved, optimised laser operating parameters needed for microsampling of aqueous solutions and analytical performance data were obtained. The optimum laser operating …
-
Development and validation of liquid chromatography mass spectrometry (L/C/MS/MS) assay for the determination of plasma 4betahydroxycholestrol and cholesterol in HIV infected children in Africa
… as a surrogate analyte for the preparation of calibration standards and quality controls. A second SIL analogue, 4β-OHC-D4 was used as the internal standard. The transitions of the protonated derivatised products were monitored atm/z 613, 620 and 617 to the product ions m/z 490, 497 and 494 for …
-
A comparative study of hand-held magnetic susceptibility instruments.
… 3 holes, NQ core samples, 2 rock samples and 2 calibration samples at the Vale office in Thompson, Manitoba. The results show that the GDD and MS2K are most affected by temporal drift whereas the KT-10 and MS2C gave more repeatable results. The MS2C, MS2K and GDD generally gave higher …
-
Development and validation of quantitative methods for the analysis of clinical biomarkers of iron metabolism applying stable isotopes
… dilution analysis) without the need for ferritin calibration standards. The developed strategy allowed the absolute quantification of ferritin at the femtomolar level with good precision ~8%) and recoveries between 85-109% (determined using a recombinant ferritin reference material NIBSC 94/572). …