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 42 for “"Liquid media"”.
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Characterization of microporous ECTFE membranes exposed to different liquid media and ?-radiation and nanoparticle microfiltration through such membranes
… angle and BPP. Only 3M caustic solution reduced liquid entry pressure by 13.8 kPag. ECTFE membranes showed greater hydrophobicity, stronger wetting resistance and better ability to maintain hydrophobicity vis-à-vis PVDF membranes. ECTFE membranes subjected to [gamma]-radiation (up to 45 kGy) …
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Characterization of penicillin production by an immobilized biofilm of Penicillium chrysogenum
… bioreactor. The biofilm was submerged in aerated liquid media, mounted vertically in a tube and oriented so that the liquid media and sparged gas bubbles flow uniformly over the two slab faces. The conditions necessary for definite oxygen and sugar limitations were found by operating under various …
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Allopoietics in Real Time: Unfolding Among Art, Publics, Space, and Time
… arts by introducing the terms Allopoietics and Liquid Media. Building on generative and participatory art, it focuses on the real-time processes among artworks, publics, spaces, and time through which meaning dynamically emerges. Drawing on the author’s artistic works—Conjunktion, Looking at the …
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Ion effects on stability of carbon nanotubes dispersions and complex formation in polar solvents
… study of ion effects in aqueous and non-aqueous liquid media, using a combination of experimental and computational tools. Here we deepen the understanding of ion effects as a subtle balance of several pairwise interactions, which take place in liquid media containing both solutes and salts.
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On Shock Capturing for Liquid and Gas Media
… investigation of shock phenomena in gas or liquid media where a specifying relation for internal energy is absent poses special problems. Classically, for gas dynamics the usual procedure is to employ a splitting scheme to remove the source terms from the Euler equations, then up-wind biased …
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Formation of authigenic minerals during microbial degradation in artificial marine media
… into incubation cultures with artificial marine liquid media with varying concentrations of dissolved Fe(III). The cultures were exposed either to a natural sediment community or to the iron-reducing facultative anaerobe Shewanella Putrefaciens, in oxia or in anoxia. These cultures were compared …
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Free methionine sulfoxide reductase and its contributions to environmental stress response in Komagataeibacter hansenii
… that forms cellulosic biofilms at the air-liquid interface of liquid media, serving as a model for biofilm forming pathogenic bacteria. In this thesis, the role of free methionine-R-sulfoxide reductase (MsrC) was investigated through comparative analysis of the wildtype (WT) K. hansenii, an …
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Volterra System Analysis for an Electrochemical Sensor
… which applies a stochastic voltage across a liquid medium and measures the resultant current flow. This data can then be used to model the liquid’s electrochemical interactions and monitor it for bacterial growth and spoilage. Linear dynamic impedance models have previously been explored for …
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Characterization of particles created by laser-driven hydrothermal processing
… most notably iron and titanium. Analysis of liquid media collected after laser processing of bulk obsidian and tektite samples revealed fine particles rich in the same elements. Evidence suggests laser-driven hydrothermal processing separates heavy elements from the mostly amorphous silica …
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Integrated Microfluidic Culture Media Oxygenator for Organ-on-a-Chip Applications
… of oxygen concentration in MPS cell culture media. The oxygenation mechanism of the device features a serpentine fluidic channel that contacts a pneumatic pocket through a gas permeable membrane, to allow for oxygen exchange between the liquid media and the gas in the pneumatic compartment. …
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Extraction of Leucocidin From Staphylococci and Its Practical Application in the Diagnosis of Septicemia
… aseptic transfer of whole blood to a suitable liquid media has been a probable source of false negative blood culture results. This idea is due to the fairly high percentage of suspected septicemia patients who have given negative results with many blood cultures. It also brings to mind the …
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Advancing tuberculosis treatment through pharmacometric modeling of drug exposure and biomarkers
… relationship between biomarkers on solid versus liquid media. For samples with the same number of colony forming units (quantified on solid media), drug-treated and stationary phase cells had a shorter TTP (quantified on liquid media) than drug-free controls and early logarithmic phase cells, …
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Experimental setups for studying homogeneous-isotropic and rotating turbulence in clay suspensions: Preliminary results
… for creating small regions of HIT in gaseous media. We show using planar particle image velocimetry that our HIT setup is capable of producing low Taylor microscale Reynolds number HIT region of 20 mm x 20 mm in liquid media. Comparison of temporal spectra in water and aqueous clay suspension …
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Development and evaluation of low density polyethylene-based antimicrobial food packaging films containing natural agents
… of AM films on the bacterial inhibition in liquid media to be successfully modelled. The effects of combined AM systems in LDPE/EVA-based films were also studied. Having identified the AM activity in laboratory media, the films were then used to package Cheddar cheese in order to assess the …
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Integrated functional anlaysis of quorum-sensing in the rice pathogenic bacterium Burkholderia glumae
… glumae. The QS system of B. glumae is mediated by the core genes, tofI and tofR. N-octanoyl-L-homoserine lactone, the primary QS signal molecule of B. glumae, is synthesized by tofI and binds to the cognate receptor tofR at the quorum point. However, tofI and tofR null mutants produce …
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The effect of chaotropic magnesium chloride on the growth of microbes
… with the focus on MgCl₂. Solid (1.5% agar) and liquid media were supplemented with 1% yeast extract and different concentrations of MgCl₂ and NaCl, using samples from a salt marsh and agricultural soil (Colchester, UK). Viable counts decreased for both solutes as concentrations increased but …
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Host and pathogen genomics: the molecular repertoire of soybean and Sclerotinia interactions
… stems, and of S. sclerotiorum mycelia grown on liquid media. In addition to these global RNA expression studies, a gene-specific study was carried out on the role of a putative G protein-coupled receptor possibly implicated in the plant interactions with pathogens. The gene was identified, …
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Electrostatically Actuated Microvalves Fabricated with Soft-Lithographic Techniques for Integrated Microfluidics
… the actuation of the microvalves in different liquid media, including fluorinated oils and water.
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Magnetic Communication in Harsh Environments Employing High-Sensitive Wideband Magnetic Field Sensors
In many transmission media other than air, current communication systems are unable to provide sufficiently fast and stable data transmission for modern applications. Examples include underground and underwater communication, as well as data transmission in process engineering, e.g., communication …
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Fabrication, solute transport characterization and biological application of a microfluidic gradient chamber
… was grown in the MGC by introducing high salt media along the two boundary channels. The M. acetivorans produced a large amount of methane gas, which ultimately displaced the liquid media in the 1200-well array, rendering the MGC non-functional. The results of this study are a detailed set of …
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