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 38 for “"sensing mechanisms"”.
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Non-canonical sensing mechanisms in bacteria
… in population density through quorum sensing. Additionally, bacteria have evolved chemosensory navigation machineries to sense chemicals around them and move towards nutrient-rich regions or away from toxins in the process known as chemotaxis. Chemotaxis has been extensively …
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Investigating HSV-1 pUL56 mediated antagonisation of DNA sensing mechanisms
Herpes Simplex Virus 1 (HSV-1) is a large, enveloped DNA virus that infects around two-thirds of the world population. HSV-1 is known to successfully remodel the host cell microenvironment to allow for efficient replication and propagation of progeny virions. One of the ways in which HSV-1 achieves …
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Exploring the function and sensing mechanisms of human enteroendocrine cells using intestinal organoids
… thesis aimed to characterise hormone-releasing sensing mechanisms adopted by two important types of EECs: K-cells, which secrete glucose-dependent insulinotropic polypeptide (GIP), and enterochromaffin (EC) cells, which secrete serotonin, or 5-hydroxytryptamine. GIP, largely known as one of the …
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Design And Analysis Of Reconfigurable Sensing Antennas For Wireless Sensing Applications
Reconfiguration sensing antenna (rsa) is a novel antenna concept, which not only can transmit or receive radio waves but also can sense the surrounding environment. The environment sensing is realized by reconfiguring the antenna's characteristics, such as resonant frequency, and radar cross …
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Applications of infrared fibers in temperature sensing
… and <i>CO</i>₂ laser power, and in several sensing mechanisms. This thesis presents an overview of these new fibers and how they can be applied in noncontact temperature measurement. Fiber optic temperature sensing is thus reviewed, and an optical fiber pyrometer is discussed.
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Numerical Analysis of Multi-Functional Surface Acoustic Wave Sensor
… to evaluate the device performances. Also, the sensing mechanisms of multiple sensing measurands, such as mechanical strain and temperature, are investigated by scrutinizing the changes of the wave characteristics.</p>
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Electrothermal controlled-exposure technology
… biowarfare agent detection and in vivo glucose sensing. Both applications employ sensing mechanisms that can be miniaturized and packaged in an array. These sensors are susceptible to fouling or degradation over time from environmental factors. The controlled-exposure technology addresses this …
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Multimaterial Fiber Sensors for Physical Measurements
… to create multimaterial sensors with versatile sensing capabilities. However, the high viscoelasticity of polymer materials and the limitations of existing sensing mechanisms constrain the precision and stability of these sensors. This research focuses on enhancing the sensitivity of …
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Sensor applications of carbon nanotubes
A search of published research on sensing mechanisms of carbon nanotubes was performed to identify applications in which carbon nanotubes might improve on current sensor technologies, in either offering improved performance, reduced cost of manufacture, or both. Using this overview of carbon …
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Anti-phage defense as a driver of molecular innovation
… diversity of enzyme chemistries and molecular sensing mechanisms whose study has produced new biotechnological tools and insights into our own immune systems. In this work, I have investigated anti-phage defense mechanisms at multiple scales using a combination of genetic, biochemical, and …
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Signals and Sensory Mechanisms that Impact Campylobacter jejuni-Host Interactions
… intestinal tract to establish commensalism. The sensing mechanisms and subsequent physiological responses by C. jejuni can be crucial for initial growth and colonization and long-term persistence within the infected host. However, how many of the signals and sensing mechanisms affecting C. jejuni …
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DNA Walkers: Emerging Analytical Applications, Biomolecular-Nanomaterial Probes and Biomolecule Sensors
… applications that range from nucleic acid sensing, to protein detection and to cellular imaging and analysis. The research described herein focuses on improving the understanding of biophysical processes involved in the design and operation of DNA walkers. Specifically, we developed a …
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Intelligent assembly in flexible automation
… which can be determined using appropriate sensing mechanisms. The mating phase is given special attention by proposing the method of information Spaces as a suitable frame work for sensor fusion and context directed interpretation. Thus the successful progress is described regarding any …
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Chemical vapor sensing with novel coupled-channel field-effect transistors
Chemical vapor sensing has numerous practical applications. Many small polar organic molecules, from alcohols to explosives, are tested for in ambient atmosphere every day as part of security and air quality monitoring. However, many of these tests require expensive monitoring equipment. This work …
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Palladium coated edge-emitting lasers for hydrogen sensing applications
… of hydrogen energy sources and various hydrogen sensing mechanisms is presented, followed by an overview of the edge-emitting laser sensor in terms of device design and physical sensing properties. A detailed description of the associated fabrication process is given, along with its test setup. …
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The upper small intestinal microbiota regulates nutrient sensing pathways to influence glucose homeostasis
… homeostasis. Interestingly, some nutrient sensing mechanisms are impaired in response to a high fat diet (HFD). However, whether HFD-induced changes in the gut microbiota alter these selective pathways to impair glucose regulation, remains unknown. Furthermore, the anti-diabetic therapy …
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Silicon piezoresistors for MEMS pressure sensor applications
… in this area. A comparison of existing and new sensing mechanisms has been undertaken and identified as silicon piezoresistors. The focus of the research is motivated by the recently discovered enhanced piezoresistive effect in silicon nanowires where sensitivity can be increased by decreasing …
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Adaptive Mechanisms of an Estuarine Synechococcus based on Genomics, Transcriptomics, and Proteomics
… contains more genes involved in regulation, sensing, and stress response. At the transcript and protein level, CB0101 regulates its metabolic pathways, transport systems, and sensing mechanisms when nitrate and phosphate are limited. Zinc toxicity led to oxidative stress and a global down …
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Nutrient sensing by the mTORC1 pathway in physiology
… and the amino acids leucine and arginine, whose sensing mechanisms are beginning to be identified. However, the role and implications of nutrient sensing by mTORC1 in mammalian physiology remains poorly understood. Here, we identified a critical role of leucine sensing by mTORC1 in adapting to …
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Instrumentation of partical conveying using electrical charge tomography.
… to a tornographic imaging system. Several sensing mechanisms for measurement using non-intrusive techniques are discussed and their relevance to pneumatic conveying considered. Electrical charge tomography systems are shown to be worthy of investigation. Electrodynamic sensors are …
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