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 14 of 14 for “"chemical stress"”.
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Regulation of the Cytochrome P450 Gene, CYP81D11, in Arabidopsis thaliana, Subjected to Chemical Stress
In höheren Pflanzen induzieren toxische Chemikalien die Expression eines Sets von Detoxifikationsgenen. In Arabidopsis thaliana ist die transkriptionelle Aktivierung eines Teils der an der Detoxifikation beteiligten Gene abhängig von Klasse II TGA Transkriptionsfaktoren (TGA2, 5 und 6) und dem TGA …
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Defining the ethanol-stress response in Saccharomyces cerevisiae
… impact on yeast performance, acting as a potent chemical stress on yeast cells. This stress eventually inhibits yeast growth and reduces ceil viability, therefore limiting alcohol concentrations in the final product and increasing fermentation turnover times. The reduced cell growth rate and …
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Radiation induced degradation of elastomers.
… elastomer (Viton E60-C),by chemical stress relaxation measurements. It was observed that the PDMS elastomer degraded thermally by hydrolytic scission of the main chain and chain reformation by condensation of the silanol chain end groups. However,predominant chain reformation …
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Mode of Action of Abscisic Acid in Barley Aleurone Layers: Induction of Proteins by Abscisic Acid
… low pI $\alpha$-amylase isozymes. A number of stress conditions, including heat shock, chemical stress (arsenite and cadmium), chilling stress, water stress (imposed by PEG 400, PEG 8,000, mannitol, or sorbitol), and salt stress (imposed by NaCl, KCl, or CaCl$\sb2$), were tested for the …
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Investigating the aggregation of TDP-43 in models of Amyotrophic Lateral Sclerosis
… phosphorylated and cleaved and co-localises with stress granules. This thesis explores the features of TDP-43 pathology in established cell models using microscopy techniques to investigate the relationship of pathological aggregate species and cellular dysfunction. We have characterized stable …
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Molecular Mechanisms of Programmed Necrotic Death Initiated by Intrinsic Death Signals
… is a passive reponse to unmanageable physico-chemical stress.</p><p>However, the PND execution pathways triggered by death signals and the determinants of death versus long-term survival are unclear. Here, I demonstrated a critical role for the transcription factor DeltaNp63alpha in …
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Linking individual-based models and dynamic energy budget theory : lessons for ecology and ecotoxicology
In the context of ecological risk assessment of chemicals, individual-based population models hold great potential to increase the ecological realism of current regulatory risk assessment procedures. However, developing and parameterizing such models is time-consuming and often ad hoc. Using …
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Responses of Nitrifying Bacteria to Aquaculture Chemotherapeutic Agents
… Currently, there is a narrow variety of chemicals approved by either the Food and Drug Administration (FDA) or the Environmental Protection Agency (EPA) for the treatment of disease outbreaks and water quality issues in aquaculture. Approved chemotherapeutants include oxytetracycline, …
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COMPUTATIONAL MODELING OF BACTERIAL OUTER MEMBRANES AND DEVELOPMENT OF HIGH-THROUGHPUT SCREENING PLATFORM FOR ANTIBIOTICS
… understanding of how bacteria adapt to the chemical stress stimuli. The development of antimicrobial resistance is especially true for Gram-negative bacteria that develop resistance to antibiotics readily due to their unique highly charged outer membrane. Structurally, the Gram-negative …
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The Impact of soil structure and confining stress on the permeability of clay soils in brine environments
… macrofabric of the clays as a result of physico-chemical interactions between the clay particles and pore fluid chemistry. However at the present there still remains no theoretical framework for interpreting the mechanism for changing permeability and the prediction of the onset of permeability …
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Resolving functional resilience of microbial communities to climate-induced change in the McMurdo Dry Valleys of Antarctica
… an advantage to endure the physical and chemical stress. Models predict that over the coming decades, climate change will trigger hydrological changes in the system with potential consequences for its microbial communities and, subsequently, ecosystem-level processes. The capacity of the …
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Influence of chemical and mechanical stress on precision-cut lung slices
Lungs are exposed to different forms of stress such as chemical substances, allergens or in the form of direct tissue injury. This study examined whether precision-cut lung slices are suitable as a model for studying different types of stress. We established the use of PCLS from sheep to study the …
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Elucidating the Role of Toxin-Induced Microbial Stress Responses in Biological Wastewater Treatment Process Upset
… of this work is that the physiological microbial stress response could serve as a rapid, sensitive, and mechanistically-based indicator of process upset in biological wastewater treatment systems that receive sporadic shock loads of toxic chemicals. The microbial stress response is a set of …
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Elucidating the Response of Activated Sludge Cultures to Toxic Chemicals at the Process, Floc and Metabolic Scales
… these systems can be severely affected by toxic chemicals present in the influent wastewater. The effects of chemical toxins at the treatment process level are determined by the mechanisms that occur at the biofloc and cellular levels, which can be physical, chemical and physiological in nature. …