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 18 of 18 for “"Bacterial colonies"”.
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Structurally coloured bacterial colonies
… uncovered that structural colouration in some bacterial colonies stems from the organisation of the cells into two-dimensional photonic crystals, but it is still unknown how the arrangement of the cells within the polycrystalline structure can affect the colony's appearance. Moreover, the …
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Pengaruh konsentrasi sukrosa dan sari kulit pisang terhadap kualitas minuman sinbiotik kulit pisang kepok (Musa paradisiaca)
… analysis of total acidity, pH, total lactic acid bacterial colonies, and organoleptic test by hedonic methods. The data obtained will be analyzed with two lines ANOVA, if value is significant then further tested HSD 5% The results showed that the best concentration of sucrose 8% on the total …
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Methods of bacteria recognition relying on simple hardware techniques.
Bacterial contamination puts the public at risk and is costly for the food-processing industry. Traditional (biochemical) methods of bacteria recognition require complicated sample preparation for reliable results. Automated technologies exist for the identification of bacterial cells in …
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The impact of the leather manufacturing process on bacterial growth
… species including potential pathogens. Many bacterial species such as Bacillus, Staphylococcus, Micrococcus and Pseudomonas were isolated from raw hides/skins, and hides/skins at different stages of leather making process. The extreme environmental conditions present during a conventional …
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Phase-Field Model For Heterogeneous Biofilm-Solvent Interaction and 3-D Numerical Simulation by GPUs
… bacteria are often found in biofilms or other bacterial colonies, which can grow into spectacular patterns visible under the microscope. Also in the laboratory, bacteria such as E. coli form regular geometric patterns like simple concentric rings and elaborate ordered form. The experimental …
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Thermodynamic and topological characterization of living systems
… at single-cell and subcellular resolution, from bacterial communities and tissues to intra-cellular signaling and expression dynamics of genes. Despite such progress in data collection, major theoretical challenges remain to find structure and organizing principles in these data, which are often …
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Propagation of engineered cellular properties to colony scales in bacterial populations
… in this thesis has developed a simplified bacterial system to study biological self-organization, focussing on quantifying the influence of physical cellular properties and interactions on global cellular arrangements within colonies. The approach of this project was to use Escherichia coli …
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Raman Chemometrics and Application to Enzyme Kinetics and Urinalysis
… taken of biological systems such as proteins, bacterial colonies, and liquid waste, are difficult to interpret due to the complexity of their covalent bond landscape and mixtures of molecules in highly variable concentrations. Rather than deconstructing Raman spectra to attempt assignment of …
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Aderência in vitro de bactérias bucais a diferentes tipos de piercings linguais
… tongue piercings, presenting differences in the bacterial colonization pattern on distinct materials of tongue piercings. The aim was to assess the in vitro adherence of E. corrodens (ATCC 23834) and S. oralis (ATCC 10557) to the surface of tongue piercings made of surgical steel, titanium, …
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Understanding the mechanics of growth: A large deformation theory for coupled swelling-growth and morphogenesis of soft biological systems
… surgery, curbing the growth of tumors and bacterial colonies, tissue engineering of functional vascular grafts, etc. Solid tumors account for more than 85% of cancer mortality, and bacterial biofilms account for a significant part of all human microbial infections. Mechanics plays a crucial …
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Efficacy of Ultraviolet Light in Combination with Chemical Preservatives for the Reduction of Escherichia coli in Apple Cider
… onto Tryptic Soy Agar (TSA). Counts of the bacterial colonies were made 48 hours after incubating plates at 35°C. Overall, reductions of E. coli were greater in cider treated with preservatives after UV processing than when preservatives were added prior to UV processing (P < 0.05). …
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Presence of potentially pathogenic heterotrophic plate count (HPC) bacteria occurring in a drinking water distribution system in the North-West Province, South Africa
… a drinking water distribution system. Fifty six bacterial colonies were selected based on morphotypes and isolated for the screening of potential pathogenic features. Haemolysin production was tested for using sheep-blood agar plates. Of the 56, 31 isolates were β-haemolytic. Among the 31 …
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Development of enabling technologies for single cell analysis with mass spectrometry
… larger samples, including tissue sections or bacterial colonies. As an application, natural product mutant libraries were screened directly from E. coli colonies using microMS. The suite of technologies and protocols described increases the applicability of many mass spectrometers to …
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Isolasi dan karakteristik bakteri endofit dari umbi tanaman kentang (Solanum tuberosum. L) menggunakan primer PCR-RAPD
… from this study not only from the morphology of bacterial colonies, gram paint, and the results of culture, but also the DNA banding pattern of endophytic bacteria from the PCR- RAPD. The isolated of endophytic bacteria from potato tubers obtained six isolates of endophytic bacteria. The six …
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EVALUATION OF TWO ORAL PROBIOTIC PRODUCTS FOR MICROBIAL VIABILITY AND IN VITRO INHIBITION OF SELECTED PERIODONTAL BACTERIAL PATHOGENS.
… of oral probiotic products involves use of known bacterial antagonisms to alter the ecologic environment in periodontal pockets from one inhabited by pathogenic dental plaque microorganisms to one more favorable to colonization by non-pathogenic species (bacterial replacement). Until recently, the …
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Resorcinol-formaldehyde/titania (RFTi) gel composites for wastewater treatment
… obtained through adsorption analysis, with no bacterial colonies found after treatment. The synthesised sample was reusable for four repeated cycles without significant loss of performance, as demonstrated for RFTi30. This work not only highlights the potential of RFTi gels for water …
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Phenotypic and biochemical characterisation of the causal agent of bacterial leaf streak of maize
… for at least 10% of crop production losses. Bacterial leaf streak (BLS) of maize was first reported in South Africa in 1949 and has not been reported elsewhere. Very little is known about the pathogen involved and therefore it is deemed necessary to compile a characteristic profile for the …
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Analysis of phenolics and other phytochemicals in selected Malaysian traditional vegetables and their activities in vitro
… in vitro, including antioxidant and antibacterial activities of extracts of these plants and individual phytochemicals. In the first section of this project, discussed in Chapter 3, Malaysian traditional vegetable extracts were screened for phenolic compounds using several complimentary …