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 20 of 540 for “"ToF"”.
-
TOF-SIMS analyses of interplanetary dust particles
… die Sekundärionen-Flugzeitmassenspektrometrie (TOF-SIMS). Diese ermöglicht die nahezu zerstörungsfreie Elementanalyse von Teilchenoberflächen und -schnitten bei hoher lateraler Auflösung. Obwohl TOF-SIMS eigentlich flache Proben voraussetzt, konnte diese Technik mit Hilfe von Modellrechnungen …
-
Analýza ultratenkých vrstev metodami SIMS a TOF-LEIS
… profilování vrstev kombinací metod SIMS a TOF-LEIS.
-
Experimental and Theoretical Investigation of Correlating TOF-Camera Systems
This thesis investigates Time-of-Flight (TOF) 3D imaging systems. A mathematical model is developed to predict the systematic errors and statistical uncertainties of such cameras. In order to determine the errors experimentally and to test the model, a custom experimental setup has been built for …
-
Characterization of Oligosaccharides and Nanoparticles by MALDI-TOF Mass Spectrometry
… yields chlorine-containing fragment ions. MALDI-TOF-MS and LDI-TOF-MS are shown to be useful for characterization of ultra-small titania nanoparticles. Peak maxima in MALDI-TOF mass spectra are found to correlate with nanoparticle size. The size distributions of TiO2 nanoparticles, obtained from …
-
A novel high-efficiency SiPM-based system for Ps-TOF
A novel set up for Positronium Time Of Flight is proposed, using Silicon Photomultipliers (SiPMs) instead of Photomultiplier Tubes. The solution allows us to dramatically increase the compactness of the set up, thus improving the efficiency of 240%. Different configurations of SiPM+scintillators …
-
MALDI-TOF MS Data Processing Using Wavelets, Splines and Clustering Techniques.
… desorption/ionization (MALDI) time of flight (TOF), is emerging as a leading technique in the proteomics revolution. It can be used to find disease-related protein patterns in mixtures of proteins derived from easily obtained samples. In this paper, a novel algorithm for MALDI-TOF MS data …
-
Investigation of Meson Production at COSY-TOF Using the Analysis Framework TofRoot
The TOF-spectrometer located at the proton accelerator COSY (Juelich) stands out for experimental versatility. This is due to its modular setup: about ten subdetectors can be be arranged to satisfy the individual requirements of specific experiments. However, this flexibility hampers the …
-
Gold compact disc appended Tröger’s base scaffolds as MALDI-TOF biodetection probes
… of these biological interactions via MALDI-TOF spectrometry will be probed. The (+)-biotin / streptavidin interaction will be used as a model study for these purposes with the ambition to develop this further with humanitarian and military applications. The V-shape and 90˚ angle of Tröger’s …
-
Evaluation of SELDI-TOF MS as a tool in colorectal cancer screening
Aim: To assess SELDI-TOF MS technology as a tool for biomarker discovery in the stool and serum of colorectal cancer patients. <br/><br/>Materials and Methods: <br/>1.Initially a technique of analysis was developed and optimised using tumour samples and matched normal mucosa, obtained from the …
-
Characterization of A-type Proanthocyanidins in Peanut Skins Using MALDI-TOF MS
… of flight mass spectrometry (MALDI-TOF MS). Many similarities were found in the proanthocyanidin composition of cranberries and peanut skins. New oligomeric and polymeric proanthocyanidins in peanut skins, including heteroproanthocyanidins and proanthocyanidins with sugar moieties or …
-
GC-TOF-MS basierte Analyse von niedermolekularen Primär- und Sekundärmetaboliten agrarwirtschaftlich bedeutsamer Nutzpflanzen
… sind umfangreiche Analysen hinsichtlich ihrer stofflichen Zusammensetzung notwendig. Chromatographische Techniken gekoppelt an ein Massenspektrometer und die Kernspinresonanzspektroskopie wurden dafür bislang verwendet. In der vorliegenden Arbeit wurde ein Gaschromatograph an ein …
-
Rapid methods for bacterial identification and predicting antibiotic resistance by MALDI-TOF MS
… time-of-flight mass spectrometry (MALDI-TOF MS) as a high throughput, cost-effective alternative to conventional methods in clinical diagnostics has been the basis for a large portion of these. Current techniques for routine bacterial identification involve culture-, biochemical-, and …
-
Untersuchung von Proton-Proton-Reaktionen an der Pion-Produktionsschwelle mit dem COSY-TOF-Spektrometer
… momenta of 805.2 MeV/c and 796.0 MeV/c with the TOF spectrometer at the COSY accelerator.
-
Deep Convolutional Neural Networks for Segmenting Unruptured Intracranial Aneurysms from 3D TOF-MRA Images
… for segmenting intracranial aneurysms from 3D TOF-MRA scans in the ADAM dataset.
-
Deciphering the chemistry of host-parasitic plants interactions using the UHPLC-q-TOF-MS and chemometrics
… to that of V. combreticola using the UHPLC-q-TOF-MS and classical molecular networking. These two species were found to be chemotaxonomically distinct, with V. album mainly consisting of flavonoids conjugated to 3-hydroxy-3-methylglutaric acid. Lastly, chemically diverse polyphenols including …
-
Modification of substrate specificity of thioesterase, reductase, desaturase by MALDI-tof-MS analysis of microbial colonies
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
-
Design and Characterization of a Current Assisted Photo Mixing Demodulator for Tof Based 3d Cmos Image Sensor
… one of the most important is time-of-flight (TOF) principle that is intensively investigated. The third dimension, i.e. depth information, can be determined by correlating the reflected modulated light signal from the scene with a reference signal synchronous with the light source modulation …
-
Optimizing main spectrum profiles for use in real-time MALDI-TOF mass spectrometry identification of Leptospira serovars
… Time-of-Flight Mass Spectrometry (MALDI-TOF MS) by diagnostic laboratories for microorganism identification to the species-level, MALDI-TOF MS was explored as a potential method for serovar detection and identification in leptospirosis-positive canine urine samples. Commercial MALDI …
-
Caracterización fenotípica y proteómica (MALDI-TOF MS) de bacilos Gram negativos multireesistentes aislados en un Hospital Universitario Chileno
… clínica. La espectrometría de masas MALDI-TOF es una herramienta que ha revolucionado el diagnóstico microbiológico. La gran especificidad de los espectros obtenidos, la rapidez con que se obtienen resultados y su relativamente bajo costo por muestra analizada han hecho de MALDI-TOF la …
-
Identification and imaging different lipid species within phase-separated model membranes by integration of TOF-SIMS and principal component analysis
Time of flight secondary ion mass spectrometry (TOF-SIMS) enables chemically imaging the distributions of various lipid species in model membranes. However, discriminating the TOF-SIMS spectra of structurally similar lipids is very difficult because the low mass fragment ions that are abundant in …
Page 1 of 27