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 236 for “"High Performance Liquid Chromatography (HPLC)"”.
-
Etablierung einer Methode für die High-Performance-Liquid-Chromatography (HPLC) mit elektrochemischer Detektion (ECD) zur gleichzeitigen Messung von 3-Methoxy-4-hydroxyphenolglycol, 5-Hydroxyindolessigsäure und Homovanillinsäure im Liquor von Patienten mit Fibromyalgiesyndrom und neurologischen Erkrankungen
Es wurde eine Analysemethode für die High-Performance-Liquid-Chromatography (HPLC) mit elektrochemischer Detektion (ECD) zur gleichzeitigen Messung von 3-Methoxy-4-hydroxyphenolglycol(MHPG), 5-Hydroxyindolessigsäure (5-HIAA)und Homovanillinsäure (HVA)im Liquor von Patienten mit Fibromyalgiesyndrom …
-
Singlet-Delta Molecular Oxygen as a Tool for Selective Chemiluminescent Detection in Chromatography
… potential as a tool for selective detection in high-performance liquid chromatography (HPLC). Excited molecular oxygen, formed for this work in the chemical reaction between hydrogen peroxide and hypochlorite, brings about sample luminescence by energy transfer to an analyte or by chemical …
-
Investigation of the Luminol Chemiluminescence Reaction as a Post-Column Reaction Detector for HPLC
… been used as a post-column reaction detector for high performance liquid chromatography (HPLC). The research reported here has progressed in two principle areas: first, the development of a method for the determination of amino acids and other complexing species based on suppression of the …
-
Temperature Dependence of 4-Hydroxy-2-Trans-Nonenal (HNE), a Toxic Aldehyde, in Coconut, Palm, Safflower and Grape Seed Oils
… detection and identification of HNE was by using high-performance liquid chromatography (HPLC) of HNE-DNPH and measured by 378 nm UV absorption. The four commercial vegetable oils for this study were selected based on their different degrees of unsaturation according to their fatty acid …
-
Retention trends of chemical classes using CCl₄ as a carrier solvent in normal-phase HPLC
… ) was closely evaluated as a carrier solvent in high-performance liquid chromatography (HPLC). The separation and retention trends of ninety-two selected compounds from eleven chemical classes (furans, thiophenes, aromatic hydrocarbons, ethers, esters, ketones, aldehydes, aromatic amines, …
-
Admicelle-Based Solid Phase Extraction of Phenols Using Dialkylammonium Surfactant in the Hydroxide Form
… drinking water samples and were determined using high performance liquid chromatography (HPLC) coupled with a photo diode-array detector.
-
ΑΠΟΜΟΝΩΣΗ ΚΑΙ ΑΝΑΛΥΣΗ ΚΑΡΟΤΕΝΟΕΙΔΩΝ ΤΟΥ ΦΟΙΝΙΚΕΛΑΙΟΥ ΜΕ ΥΓΡΗ ΧΡΩΜΑΤΟΓΡΑΦΙΑ
… THE PROPOSED METHOD IS BASED ON THE PREPARATIVE LIQUID CHROMATOGRAPHY. THE EFFECT OF THE FEED THROUGHPUT, THE DIAMETER OF THE COLUMN, THE SOLVENT FLOW AS WELL AS THE RECYCLING OF COLLECTED FRACTIONS ARE STUDIED IN ORDER TO GIVE USEFUL HINTS FOR THE SCALE-UP OF THE METHOD. A NEW ANALYTICAL METHOD …
-
Skysčių chromatografija–tandeminė masių spektrometrija antibiotikų nustatymui maisto produktuose /
High–performance liquid chromatography (HPLC) and/or ultra-performance liquid chromatography (UPLC) techniques coupled with tandem mass spectrometry (MS/MS) were developed for the determination of common antibiotics (chloramphenicol, sulfonamides and nitroimidazoles together with their metabolites) …
-
Chlorhexidine Interaction with Microcrystalline Cellulose
… chlorhexidine and sodium hypochlorite using Gas Chromatography-Mass Spectrometry (GC-MS) and High-Performance Liquid Chromatography (HPLC). By examining microcrystalline cellulose as a model, we will investigate the mechanisms of staining and toxicity. Identifying these reaction products will …
-
Effect of glutamine supplementation combined with resistance training on muscular performance, body composition and protein degradation
… degradation (urinary 3-Methylhistidine by high performance liquid chromatography [HPLC]). Repeated measures ANOVA showed that strength, torque, lean tissue mass and 3- Methylhistidine increased with training (p
-
The therapeutic importance of isoniazid metabolism in elderly patients
… were synthesized and characterized by thin layer chromatography, high performance liquid chromatography (HPLC), ultra-violet absorption spectra and mass spectrometry. Thereafter, these compounds together with hydrazine were used in the subsequent experiments.
-
Quantification of sugars and organic acids in 210 cucumber (cucurbis sativus) varieties for genome-wide association studies (GWAS)
… solid content (ºBrix), three main sugars via high-performance liquid chromatography (HPLC), pH, titratable acidity (TA), and three main organic acids via HPLC in 210 GWAS cucumber samples. A histogram and Agglomerative Hierarchical Clustering (AHC) were performed for each measured variable. …
-
HPLC analysis to assess efficacy of cisplatin, nedaplatin, and oxaliplatin
… and develop anticancer drugs. In this work, High Performance Liquid Chromatography (HPLC) analysis was performed to assess the binding of cisplatin, nedaplatin, and oxaliplatin to the dinucleotide dGpdG. By examining the concentration ratios and incubation periods at 37 °C, we measured the …
-
Survey of Flavonoids and Their Distribution in Different Kinds of Onions Using High Performance Liquid Chromatography and Gas Chromatography Mass Spectrometry.
… and the abstracts were analyzed subsequently by high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GCMS). Statistical calculations were done to see if there are significant differences in the varieties of onions studied from the chromatographic profiles …
-
Mass Spectrometric Studies on Lignin Sequencing and Fast Pyrolysis, Functional-Group Selective Ion-Molecule Reactions and Reactivity of Bi- and Triradicals
Due to the high sensitivity, selectivity and speed, mass spectrometry (MS) has proved to be an invaluable tool for mixture analysis and structural elucidation of mixture components. Tandem mass spectrometry (MS/MS) utilizing collision-activated dissociation (CAD) has become the technique of choice …
-
The analysis of marine algae photosynthetic pigments by high performance liquid chromatography
… of in vitro algal cultures, using reverse-phase high performance liquid chromatography (HPLC) is described. This technique was extended to analysis of photosynthetic pigments in samples from the SIBEX-I Expedition; a preconcentration technique was developed to allow a reduction in sample volume …
-
A potential route to hydrogel multifunctionalization utilizing encapsulation of acrylate-conjugated streptavidin
… biologically active hydrogels utilizing the high streptavidin-biotin binding affinity. Streptavidin was conjugated to acryl-PEG-N-hydroxysuccinimide, a commercially available molecule that allows chemical binding to poly(ethylene glycol) (PEG) diacrylate and dextran acrylate hydrogels. Such …
-
Evaluation of SPEC®•Microcolumns for the extraction of ranitidine from urine
… (ranitidine hydrochloride) from urine for high performance liquid chromatography (HPLC) analysis. SPEC®⋅Microcolumns are rigid disc structures with glass fiber impregnated with silica gel. These microcolumns look like packed-bed SPE cartridges but have the advantages of low void volumes and …
-
Phytoplankton Abundance and Species Composition in Relation to Environmental Paramenters in Coastal Mississippi Waters
… of phytoplankton pigments were analyzed using High Performance Liquid Chromatography (HPLC) and the compositional changes in phytoplankton communities were determined with CHEMTAX 1.95. Surface water was collected for two years (September 2007-November 2009) at three sampling sites on a monthly …
-
Analysis of Synephrine Content in Bitter Orange (Citrus aurantium L.) Dietary Supplements
… goal of this research was to use reverse phase high performance liquid chromatography (HPLC) to determine the synephrine content of five dietary supplements and compare to the reported content on the label. However, due to difficulties I encountered with the HPLC instrument, I instead used …
Page 1 of 12