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.
Results
Showing 1 to 20 of 110 for “"adaptive responses"”.
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Effects of Aerobic Capacity Phenotype on Adaptive Responses to Ischemic Stress
… factors associated with ischemia. Compensatory responses include both remodeling of the vascular network to sustain substrate delivery and adaptive responses within affected tissue to sustain function despite diminished substrate availability. Active aerobic exercise has been shown to improve …
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Investigation into the destructive and adaptive responses of neural cells to stress
… vulnerability of neurons to stress, as well as adaptive responses to these stresses. Since neurodegenerative conditions associated with Ca2+, redox and bioenergetic dyshomeostasis are often characterised by early dendritic pathology, I first studied dendritic vs. somatic responses of primary …
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Root adaptive responses of tall fescue (Festuca arundinacea) growing in sand treated with petroleum hydrocarbon contamination
… a deviation from the normal root orientation responses to gravity. Scanning electron micrographs (SEM) revealed that the stele in the contaminated roots was located much further away from the root epidermis, because the cortex was larger (p<0.001) due to the cells being more isodiametric in …
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Differential vulnerability and adaptive responses to climate change-related hazards in informal urban settlements in Accra, Ghana
… studies that analyse the vulnerability and adaptive responses of informal settlements’ residents in Africa remain few and excessively focused on the analysis of vulnerability to flooding hazards. Moreover, by the theoretical frameworks and ontological positions often adopted in these …
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Modeling Protein Regulatory Networks that Control Mammalian Cell Cycle Progression and that Exhibit Near-Perfect Adaptive Responses
… cell cycle progression and near-perfect adaptive responses. Modeling and simulating these functionalities are crucial stages to understanding and predicting them as systems-level properties of cells. In the context of the mammalian cell cycle, the timing of DNA synthesis, mitosis and cell …
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Adaptation to water scarcity in glacier-dependent towns of the Indian Himalayas : impacts, adaptive responses, barriers, and solutions
… is presented, which reveals that the primary adaptive response employed in both towns has been supply augmentation. The driver behind this response has been the pursuit of economic development to improve the standard of living of Dharamshala and Leh's constituents. It is argued that economic …
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Maternal and placental adaptations to hypoxia
… crucial. In order to study pregnancy-dependent responses, a physiological stressor such as hypoxia was used to exaggerate pregnancy-induced vascular remodeling, which induced maternal adaptive responses to protect the fetus. In this dissertation, we describe studies designed to evaluate cellular …
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Yin and Yang: Qualitative and Quantitative Research Investigating Physical and Psychological Effects Following a 6-Month Taiji (T'ai Chi) and Qigong (Ch'i Kung) Intervention With Older Adults
… in balance, lower body strength, and appropriate adaptive responses in situations of inaccurate or conflicting sensory stimuli. Taiji practitioners also adopted significantly wider stance widths than their control group counterparts. The adoption of a wider stance may be one mechanism contributing …
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On the Role of Polyamines and Microvesicles in Tumour Development. Regulation by Hypoxia and Implications for Therapeutic Intervention of Cancer.
… forces for tumour progression. Targeting of the adaptive responses of cancer cells to hypoxia offers opportunities for tumour specific therapies. The aim of this thesis was to study the hypoxic regulation of polyamines and tumour cell-derived microvesicles (MVs), both of which have been …
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Stress and inflammation regulate the kynurenine pathway dioxygenases in a glia‐ and tissue‐specific manner
The inflammation and stress responses are intimately related adaptive responses to pathogens or other stressors upsetting our body’s homeostasis. However, when infections or other stressors persist-or are sufficiently traumatic-our normally adaptive responses become maladaptive compromising our …
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UNDERSTANDING THE PROCESS OF MULTISENSORY INTEGRATION
… remarkable process. At the single neuron level, responses are more robust to spatiotemporally concordant modality-specific sensory cues (likely derived from the same event) than to either cue alone – an effect that is strongest when the cues are weakest. This multisensory enhancement effect …
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Determinants of innate immune responses to mycobacteria
… recognise mycobacteria and initiate immune responses such as phagocytosis, cytokine production and expression of maturation markers. The type and magnitude of innate responses to mycobacteria may determine the subsequent adaptive responses generated. Our aims were to determine maturational …
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The Management of Retrenchment at Public Universities
… best, steady state resource levels. Significant adaptive responses will be required in order for institutions to operate within funds that are expected to be available. There is a lack of knowledge in the area of retrenchment management which is especially critical in higher education where there …
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Chemical Induced Hypoxia Differentially Affects Gene Expression in Human Neuronal Cells
… can also cause hypoxia in cells. To investigate adaptive responses of human neuronal cells under CoCl<sub>2 </sub>versus DFO induced hypoxic conditions, we examined the expression of several opioid receptor genes. Preliminary results of RT-PCR showed a decrease in hMOR message levels, no change …
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An Investigation of the Effect of Malathion on Adaptive Plasticity of Pseudacris sierra
… Chapter one reviews what is known about adaptive plasticity in response to predators, describes the physiological systems involved in such plasticity, and outlines the evolutionary consequences of adaptive plasticity. Chapter two describes a scientific experiment that investigates how …
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Effects of heat stress and fescue toxicosis on the immune system and other physiological parameters
… to invading pathogens. This research identified adaptive responses to fescue toxicosis that highlighted shifts in immune function.
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Cellular organisation of peripheral nerve and the neuromuscular junction
… roles. These cells are also essential for adaptive responses by the peripheral nervous system during development, injury and pathological conditions. Schwann cells represent one of the principal cellular components regulating nerve function. In peripheral nerves, myelin-forming Schwann …
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Evolutionary responses to global change: an experimental test of the effect of altered precipitation on hybridization rates in sunflower (Helianthus)
… rapidly altering natural ecosystems. Plastic and adaptive responses to climate change (i.e., range shifts and phenology) have been widely noted across taxa. However, the effects of climate change on evolutionary processes such as interspecific gene flow (hybridization) are less well known. In this …
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