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 20 of 29197 for “"PH"”.
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The Ph(t)/Ph(t)/s/c Queueing Model and Approximation
… of entities in the system at time t for the Ph(t)/Ph(t)/s/c queueing model. This model can be thought as a reparameterization to the G(t)/GI(t)/s. Our approach is to partition the state space into known and identifiable structures, such as the M(t)/M(t)/s/c or M(t)/M(t)/1 queueing models. We …
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Approximating Deterministic Changes to Ph(t)/Ph(t)/1/c and Ph(t)/M(t)/s/c Queueing Models
… t, to approximate deterministic changes to the Ph(t)/Ph(t)/1/c and the Ph(t)/M(t)/s/c queueing models. We develop a solution technique to minimize the number of state probabilities to be approximated.
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Eliminating intermediate lists in pH
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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pH-Triggered Membrane Insertion of Proteins
… in unraveling the molecular mechanisms of pH-triggered insertion of membrane proteins, many aspects of this process remain unknown. In this study we used two proteins that share structural similarities as model systems: the diphtheria toxin translocation domain (T domain) and the …
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Miocene paleoenvironments and paleosol pH proxies.
… endeavor that draws on sedimentology, stratigraphy, geochemistry, and geostatistics. This dissertation includes two paleoenvironmental case studies and the development of a new suite of proxies for soil pH. The first case study was performed at Coffee Ranch, the site of a late Miocene (6.6 Ma) …
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pH control in a miniaturized bioreactor
… current miniaturized design lacks a method of pH control. Without pH control, cell growth can be hindered or even stopped altogether when the growing medium becomes too acidic. Using technology already in place to optically measure the pH inside the reactor in conjunction with a valve and a …
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The production of 4-adminobutyrate in response to treatments reducing cytosolic pH and the regulation of intracellular pH
… H+ consumption are parts of a metabolic pH-stat mechanism which ameliorates the intracellular pH decline associated with anaerobiosis or other treatments. To test this hypothesis GABA production and efflux have been measured in isolated Asparagus sprengeri cells in response to three …
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Targeting Ph Domain Proteins For Cancer Therapy
… promising targeted therapy. Pleckstrin Homology (PH) domain proteins are one of the biggest protein families in the human proteome. However, no drugs have been achieved to the late development stages, let alone getting to the market. Thus, a deeper understanding of this protein family is required …
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Magnetic resonance investigations of pH in microemulsions
… magnetic resonance (MR) techniques to probe the pH in aqueous solutions and reverse micelles formed in CTAB, Triton-X and AOT microemulsions. These techniques have enabled visualisation of propagating acidity fronts in the bromate-sulfite reaction using magnetic resonance imaging. Contrast agents …
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Karanlik fermentasyon ile biyohidrojen üretiminde pH kontrolü
… biyohidrojen üretilen kesikli bir biyoreaktörde pH’ın dinamik analizi ve kontrolu gerçekleştirilmiştir. Biyoreaktörde maksimum mikroorganizma çoğalması ve ürün üretimini sağlamak için pH, sıcaklık, DO, karıştırma hızı ve substrat derişimi gibi parametrelerin optimum değerlerinde işletilmesi …
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Ion oxide silicon capacitor based pH sensing
… measuring intracellular and extracellular pH values. This thesis reports a novel technique that uses the basic principles of a MOSCAP. Based on its functionality, the device is termed as iOSCAP (Ion Oxide Silicon Capacitor). As the name suggests, the device consists of an ionic layer on top …
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Upconversion Nanoparticles for pH Sensing and Imaging
… applications in diagnostics/therapeutics require pH measurement down to the micro or nanoscale to provide relevant subcellular information, but the most widely used optical pH sensors (fluorescent dyes, dye-labeled quantum dots) suffer from drawbacks of photobleaching, blinking, and limited tissue …
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pH Transistor Nanoprobe Advances Cancer Detection and Surgery
The file named "ZHAO-DISSERTATION-2015.pdf" is the primary dissertation file. Four (4) supplemental files are also available and may be viewed individually.
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Illuminating Endocytic Organelles with pH-Resposive [sic] Nanomaterials
Pages xvii-xviii are misnumbered as pages xii-xii.
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Visible light-induced pH control and its applications
This work explores how reversible light-induced pH changes can be increased and applied to control pH-responsive systems with light. Chapter 2 investigates how substitution patterns influence the acidity of merocyanine photoacids in the dark as well as under light irradiation. The parameters which …
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Effect of pH and Temperature on Halogenated DBPs
… of this study was to evaluate the impacts of pH and temperature on the degradation of total organic chlorine (TOC1), bromine (TOBr) and iodine (TOI). In this study, we produced TOC1 (Cl<sub>2</sub>), TOBr, TOI, and TOC1 (NC<sub>2</sub>Cl) from reactions between Suwannee River fulvic acid and …
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A REGION-SENSITIVE FUZZY LOGIC CONTROLLER FOR pH
… constant monitoring and tight control is the pH of a given medium. pH processes, in general, are characterized by severe nonlinearity and extreme sensitivity as well as time varying gain. This has given rise to a host of control strategies. In recent years fuzzy logic has been employed …
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