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 15 of 15 for “"artificial urine"”.
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Investigation of the effect of hydroxycitric acid on urinary calcium oxalate risk factors for kidney stone formation in artificial urine: theoretical modelling and in vitro crystallisation experiments
… modelling of HCA-complex formation in artificial urine and in vitro crystallisation experiments. A potentiometric analysis was conducted to determine thermodynamic binding constants. These were included in the database of the JESS computer program to model the effect of HCA on the …
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Sorption, degradation and transport of estrogens and estrogen sulphates in agricultural soils
… “salting out” and competitive sorption of artificial urine constituents were likely to have been responsible for observed changes in Freundlich parameters when artificial urine was used as mediator matrix. Plotting the effective distribution coefficient as a function of hypothetical …
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Synergistic Effects of Monoculture Biofilm Dispersion and Antibiotic Treatment
… antibiotic efficacy after treatment of modified artificial urine media (mAUM)-cultured P. aeruginosa biofilms.
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Investigation of the effect of a solution of lime powder on urinary calcium oxalate kidney stone risk factors in artificial and real urines : in vitro and in vivo studies
… and lime) appear to affect the ability of urine to inhibit calcium oxalate crystallization. In South Africa, previous studies have demonstrated that black and white individuals respond differently to lithogenic and antilithogenic dietary supplements. OBJECTIVES: The current project was …
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Biotechnological utilisation of Nephrops shell waste
… chitosan. After immersion in a bath containing artificial urine, adherence of calcium and magnesium ions to the membranes was measured and compared with adherence of the same ions to polyurethane membranes. Adherence of calcium to the chitosan membranes was not higher than adherence to the …
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ELECTROCHEMICAL METHODS FOR THE SUSTAINABLE RECOVERY OF GADOLINIUM FROM MRI CONTRAST AGENTS AND FOR THE FABRICATION OF GADOLINIUM-RICH NANOPARTICLES.
… GBCAs, including production wastewater and artificial urine. Good results were obtained across various conditions, supporting the versatility and applicability of the method. The process enabled Gd recovery from solution while reducing the chemical oxygen demand (COD) of the matrix. This …
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The effect of inositol-hexakisphosphate (phytate) on urinary risk factors for calcium oxalate urolithiasis in South African population groups with different kidney stone risk profiles : theoretical modelling, in vitro crystallisation experiments and in vivo human studies
… were conducted in simple salt solutions, artificial urine and real urine of the respective groups. The following parameters were measured: ionized calcium; calcium oxalate metastable limit; calcium oxalate particle volume-size distribution; calcium oxalate crystal nucleation, aggregation …
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A Proteomics Approach to Investigate Uropathogenic Escherichia coli
… growth in various environments (Lysogeny broth, artificial urine medium and co-culture with uroepithelial cells). The digested proteins and peptides from all fractions were separated on a Dionex Ultimate 3000 RSLC nano flow system and analysed in an Orbitrap Velos Pro FTMS. Data were processed …
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An Investigation into the utilisation of ethanolamine by uropathogenic E. coli
… and confers a competitive advantage in the murine urinary tract, but the exact mechanism conferring this advantage is not known. The aim of this thesis was to investigate the utilisation of ethanolamine by UPEC. This thesis provides evidence that ethanolamine is present in the urine at …
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Enzyme-Linked Electrochemical Detection of Urinary Sarcosine
… these low concentrations in complex matrix (i.e. urine), and the cumbersome methods that have typically been used for detection (i.e. HPLC). To address these problems, this thesis sought to develop a first-generation enzyme-linked electrochemical biosensor (EnzL-ECBS) to detect sarcosine at …
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Holographic Point-of-Care Diagnostic Devices
… sensors was demonstrated by sensing pH in artificial urine over the physiological range (4.5-9.0), with a sensitivity of 48 nm/pH unit between pH 5.0 and 6.0. For sensing metal cations, a porphyrin derivative was synthesised to act as the crosslinker, the light absorbing material, the …
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Investigating the effect of prophylactic D-mannose treatment on adhesion of Uropathogenic Escherichia coli to the human bladder epithelium
… to investigate UPEC binding in the presence of urine samples from the women enrolled on a double-blind clinical trial of D-mannose. All human samples were collected as part of the MERIT trial with full ethical approval (REC 18/SW/0245; Protocol number PID13650-SP001-AC001; IRAS project ID …
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Scientific aspects of urolithiasis : quantitative stone analyses and crystallization experiments
… experiments involving a standard reference artificial urine was carried out in a rotary evaporator. The effect of pH and urine composition was studied by varying the former and by including certain components (uric acid, urea, creatinine, MgO, methylene blue, chondroitin sulphate A, …
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Nucleic acid sample preparation using magnetic ionic liquids as cell lysis and DNA extraction solvents
… from complex matrices such as plasma, blood, and artificial sputum. The DNA-enriched MIL was collected on a rod magnet and directly integrated into quantitative PCR (qPCR) and multiplex-qPCR assays with SYBR green and Taqman probe detection. Adding the DNA-enriched MIL into the reaction buffer …
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DYNAMIC SURFACES FOR URINARY CATHETERS: THE EFFECT OF POLY (GLYCEROL SEBACATE CITRATE) COMPOSITION ON DEGRADATION, ENCRUSTATION RESISTANCE AND BACTERIAL RESPONSE
… glycerol molecules. Degradation experiments in artificial urine (AU) and deionised water (DW) were undertaken and the degradation pH, percentage mass loss and absorption of media were measured as a function of citrate concentration. Encrustation resistance was measured in an environment …