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 “"stress sensor"”.
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A liquid-shear-stress sensor using wafer-bonding technology
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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Experimental studies of shear stress and flow separation in low Reynolds number flows
… and an evaluation of a novel optical shear stress sensor. Fixed separation in the rotor-oscillator flow is studied for steady, periodic, and quasi-periodic fluid motion. Experimental results are directly compared to numerical simulations, which provide the shear-stress and pressure data …
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Characterization of the Helicobacter pylori vacuolating cytotoxin mediated induction of mitochondrial cell death mechanism
… triggers mitochondrial dysfunction and metabolic stress, but the mechanisms underlying these perturbations in mitochondrial function are poorly understood. In this dissertation, we report that infection of gastric epithelial cells with H. pylori results in the transition of cellular mitochondria …
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Detection of in-plane stress waves with Polyvinylidene Fluoride (PVDF) sensors
… (PVDF), a piezoelectric polymer, is an excellent stress sensor. The objective of this research is to investigate the application of the PVDF sensors for detection of in-plane stress waves in 31 and 32 modes. This was achieved by focusing on aspects of PVDF sensing related to determination of …
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Design, Analysis, and Application of Architected Ferroelectric Lattice Materials
… through application as a multi-directional stress sensor.
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Effect of Turbulence on the Passive Film Growth and Associated Durability of Aluminum Alloys in Simulated Seawater
… the experiment, (ii) design a custom wall shear stress sensor and constant temperature anemometer traverse system to monitor hydrodynamic conditions in-situ, (iii) monitor in-situ degradation through an array of ultrasonic thickness transducers, and (iv) acquire data and control the environment …
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Nucleolar dynamics in cellular senescence
… been described, one of which is serving as a stress sensor. When the nucleolus senses stressors, it causes nucleolar stress characterised by changes to nucleolar area and function, along with signalling pathways including p53. Although alterations in nucleolar area were identified under …
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The steps in the development of an atmospheric vorticity meter
… The analysis is based on Benthic Acoustic Stress Sensor (BASS) technology that is currently used for similar acoustic measurements in the ocean. Compared to sonic anemometer measurements, the BASS measurements of velocity are not only made in a different fluid but in a different way. Due to …
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New Targets of p53 Regulation: From Aging to Immune Response
… identify novel functions of the universal stress sensor, p53. The first study describes a novel genetic model system to address the effects of p53 dosage in an in vivo context. By developing an allelic series through multiple genetic crosses, I obtained mice with incrementally increasing …
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Nanoporous Gold: Mechanics of Fabrication and Actuation
… Gold (NPG), the complex nature of the film stress evolution in thin films during their fabrication and during surface charging. Fabrication of microstructures comprised of NPG requires a precise control over selective corrosion of the precursor alloy. In many designs, the precursor alloy is …
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Gene Delivery of Adenoviral-TMBIM6 Vector Protects the Neonatal Brain after Hypoxic-Ischemic Injury
… endoplasmic reticulum (ER), which results in ER stress. Generation of reactive oxygen species (ROS), from cytochrome P450 members (CYP) and NADPH-P450 reductases (NPR), in combination with activation of the unfolded protein response (UPR) are two major consequences of ER stress that cause …
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A study of the velocity structure in a marine boundary layer : instrumentation and observations
… in Vineyard Sound. The instrument uses four sensors which measure the mean and fluctuating parts of the three components of the velocity vector at four heights above the sea bed. The sensors employ the acoustic travel time difference technique, and are designed to minimize sensor-induced flow …
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The Unfolded Protein Response Increases Production of Pro-Angiogenic Factors by Tumor Cell Lines
… protein within ER which is referred to as ER stress. Consequently, it will trigger the unfolded protein response (UPR) signal pathway through ER membrane stress sensor proteins including activating transcription factor 6 (ATF6), inositol-requiring 1 (IRE1) and PKR-like ER localized kinase …
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Investigating The link Between High-Risk Protein Kinase R-Like Endoplasmic Reticulum Kinase (PERK) Haplotypes, Periodontal Inflammation and Depression in People With HIV (PWH) on Antiretroviral Therapy ( ART)
… suppression. The endoplasmic reticulum (ER) stress sensor, protein kinase R–like endoplasmic reticulum kinase (PERK), encoded by EIF2AK3, is a crucial part of the integrated stress response (ISR) that regulates cellular adaptation to viral and inflammatory stimuli. Genetic variations in …
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Analysis of Plant Homeodomain Proteins and the Inhibitor of Growth Family Proteins in Arabidopsis thaliana
… as well as their response to nutrient and stress conditions. Lastly, I was able to show that ING2 protein interacts in vitro with SnRK1.1, a nutrient/stress sensor (Baena-Gonzalez et al., 2007). These results indicate a novel function for PHD proteins in plant growth, development and stress …
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Identifying new actions of estrogen receptor targetable with small molecules
… its ability to target the endoplasmic reticulum stress sensor pathway, the unfolded protein response (UPR). In ERα positive cancer cells, BHPI opens the endoplasmic reticulum IP3R calcium channel, triggering efflux of calcium into the cytosol, strongly activating all three arms of the UPR. BHPI …
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Molecular Characterization of Arabidopsis thaliana Snf1-Related Kinase 1
… have molecular mechanisms for nutrient-related stress responses; however, their exact regulation remains unclear. For example, the integral myo-inositol (inositol) signal transduction pathway allows Arabidopsis thaliana to sense and respond to changes in environmental stimuli, such as water, …
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Design, fabrication and testing of a fiber optic stress/strain sensor for soft stretchable materials using polarization imaging technique
… and used for noninvasive sensing of strain and stress in soft stretchable materials, such as latex and human tissues. Previously this sensing method was developed with free space bulk optics. In this study, a fiber optic based system is developed to investigate the potential application of this …