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 13 of 13 for “"pH monitoring"”.
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An Arduino-controlled bioreactor for stimulation and in situ pH monitoring of cell cultures with Organic Thin Film Transistors
L'abstract è presente nell'allegato / the abstract is in the attachment
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Hirschsprung´s Disease & Gastroesophageal Reflux. Aspects on Two Gastrointestinal Motility Disorders in Childhood
… i.e. Hirschsprung´s Disease (HD) and gastroesophageal reflux disease (GERD) in five different studies. HD is a congenital disease characterized by an abscence of ganglion cells in myenteric and submucous ganglia, most commonly in the distal part of the large bowel. In Paper I, we have studied …
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Der Einfluß angedickter Milchnahrung auf das Refluxverhalten von Neugeborenen
… is part of the therapeutic approach for gastroesophageal reflux (GER) in infants. However, its mechanism of action, especially regarding the occurrence of nonacid (pH >4) GER, has not yet been clearly described. The aim of this randomized, placebo-controlled crossover study was to examine the …
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Investigation and development of titanium nitride solid-state potentiometric pH sensor
The measurement of pH value is crucial parameter in various fields like, drinking water monitoring, food preparation, biomedical and environmental applications. The most common device for pH sensing is the conventional pH glass electrode. While glass electrodes have several advantages, such as …
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Klinische und funktionelle Langzeitergebnisse nach offener chirurgischer Therapie der gastro-oesophagealen Refluxkrankheit
… fundoplication is effective therapy for gastroesophageal reflux disease. In this study, the outcomes in 115 patients treated with antireflux Surgery between 16.01.1986 - 15.12.1998 was evaluated for up to 11 Years after surgery to ascertain whether similar positive results could be obtained. To …
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Detection of Pepsin in the Sputum/Saliva for Diagnosing Atypical Manifestations of Gastroesophageal Reflux Disease
… blot analysis. All subjects received 24-hr esophageal pH monitoring, and then 40 mg of esomeprazole was given twice a day for two weeks. RESULTS: The pepsin test was positive in 20 out of 40 patients with pepsin detected in 18 samples(45%) collected at the time of symptoms. Compared with 24-hr …
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Highly Integrated Graphene-Based Chemical Sensing Platform for Structural Monitoring Applications
Two-dimensional materials, such as graphene, hold promise for sensing applications. Graphene's remarkable surface-to-volume ratio, when employed as a transducer, enables the sensor channel to be readily modulated in response to chemical changes in proximity to its surface, effectively converting …
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Factors influencing on esophageal baseline impedance levels in patients with suspected symptoms of gastroesophageal reflux disease
… was to investigate factors influencing on esophageal baseline impedance levels, such as time from the meal period, sleep onset, and the location of measurement, in patients with suspected symptoms of GERD. Methods: Consecutive endoscopy-negative patients with suspected symptoms of GERD such as …
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Duodenal pH : new aspects of physiology and pathophysiology
… Previous investigations of the duodenal pH have been restricted by methodological and technical difficulties, and have, for the most part, only monitored the pH in the short-term. A new reliable system for long-term (twenty-four hour), ambulatory, simultaneous measurement of intra-luminal …
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Miniaturisation of pH Holographic Sensors for Nano-Bioreactors
Monitoring and controlling pH is of utmost importance in bioprocessing as it directly affects product yield and quality. Multiplexed experiments can be performed in nanobioreactors for optimisation of yield and cell heterogeneity in a relatively quick and inexpensive manner. In this thesis, a pH …
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Novel Electrochemical Methods for Acidity Monitoring: Theory, Design and Application
… the design and development of novel voltammetric pH sensors for buffered, low-buffered and unbuffered media. pH sensors in stagnant and hydrodynamic environments were designed and developed for performing measurements using square wave voltammetry. Chapter 1 introduces the motivation of this …
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Globus and dysphagia : clinical features and diagnostics
… and the causes have remained controversial. Dysphagia is a multifaceted symptom. Identifying the stage of the swallowing process at which the problem occurs directs us to possible further investigations in dysphagia diagnostics. The aim of this thesis was to investigate the etiology of globus, …