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 9 of 9 for “"linear ion trap"”.
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Paper Spray - Mass Spectrometry: Investigation of Sampling Devices for Illicit Drug Detection and Quantification
… (PS-MS) has been developed as a rapid and direct ionization method for qualitative and quantitative analysis of complex samples at trace levels. In this work, different sampling devices for PS-MS were investigated to improve the assay’s simplicity and sensitivity over traditional approaches. In …
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Optical cavity integrated surface ion trap for enhanced light collection
Ion trap systems allow the faithful storage and manipulation of qubits encoded in the energy levels of the ions, and can be interfaced with photonic qubits that can be transmitted to connect remote quantum systems. Single photons transmitted from two remote sites, each entangled with one quantum …
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Top-Down Interrogation And Characterization Of Biological Macromolecules
… applied in the field of biomolecule identification and characterization. It provides fast, accurate and robust information relevant to the molecular mass, composition and structure of the target analytes.</p> <p>This thesis is focused on the top-down analysis of various macrobiomolecules, …
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Construction And Demonstration Of A Tandem Mass Spectrometer Based Instrument For Cold Ion Spectroscopy
<p>A new instrument incorporating ion trap based tandem mass spectrometry and cold ion UV and UV-IR double resonance spectroscopy has been developed at Purdue University for the study of gas phase, biologically relevant ions. The instrument incorporates multiple quadrupole linear ion trap mass …
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CE-microreactor-CE-MS-MS for protein analysis
… system that combines the speed and automation capabilities of CE with the detection and identification capabilities of MS. Integrating on-line enzymatic microreactor digestion with a CE-MS system reduces sample handling and allows fast digestions of small protein samples.In this thesis …
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Complementary and alternate medicines: a forensic analysis of the potential adulteration of over-the-counter anorectics and "lifestyle" medicines in South Africa
… testing required for allopathic (prescription) medication, yet they are freely available as over-the-counter medicines. Past research has shown the presence of a banned drug, sibutramine in natural anorectics and a schedule 6 prescription drug, sildenafil, found in natural erectile …
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Characterisation of protein phosphorylation in Arabidopsis thaliana and Chlamydomonas reinhardtii based on affinity chromatography and mass spectrometry
Reversible protein phosphorylation is of key importance for several mechanisms of life. However, the low abundance of phosphorylated proteins hinders investigations following this direction. To circumvent this problem a new method for the enrichment of phosphorylated proteins out of complex protein …
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Mass Spectrometric Analyses of Post-Translationally Modified Proteins
Post-translationalen Modifikationen (PTMs) von Proteinen werden Schlüsselfunktionen für die Regulierung verschiedener zellulärer Prozesse zugeschrieben. In der vorliegenden Arbeit wurden verschiedene neue Methoden zur Identifizierung von PTMs, insbesondere von Phosphorylierungen, Glykosylierungen …
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Automated data acquisition and analysis for high-resolution Fourier transform mass spectrometry of proteins and peptides
… the progress made in automating the data acquisition and data processing of MS and MS/MS data from Fourier transform ion cyclotron resonance mass spectrometers. These instruments have made great strides in the past few years, moving from labor-intensive, largely manual systems to the current …