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 20 of 56 for “"Extreme environment"”.
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Reliability of SiGe HBTs for extreme environment and RF applications
… (HBTs) under radiofrequency (RF) operation and extreme environments. The degradation of SiGe HBTs due to mixed-mode DC and RF stress has been modeled for the first time. State-of-the-art 200 GHz SiGe HBTs were first characterized, and then DC and RF stressed. Excess base leakage current was …
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BULK NANOSTRUCTURED STEELS FOR NUCLEAR REACTOR AND EXTREME ENVIRONMENT APPLICATIONS
… α’, which is further accelerated in a nuclear environment because of irradiation induced point defects enhancing diffusion. Nanostructured materials have been shown to have better irradiation tolerance owing to the high-volume fraction of GBs acting as effective sinks for irradiation, and …
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The summit house : forces and forms cooperating in an extreme environment
… is provided from only those aspects of the environment which pose a threat to the health or safety of the users. A cooperative attitude is defined toward the site and toward the climate. Natural forces are harnessed to reinforce selected architectural intentions. Natural forms which have …
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Development of Materials for Extreme Environment Applications by Laser Powder Bed Fusion
… innovation must be achieved in the field of extreme environment materials. Recent technological progress in metal additive manufacturing has enabled new techniques in materials design that might prove essential in closing current gaps. In this study, I identify two critical advanced energy …
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Silicon Germanium BiCMOS Comparator Designed for Use in An Extreme Environment Analog to Digital Converter
… the process of creating a radiation hardened and extreme temperature operating comparator from start to finish in the 90 nm SiGe 9HP process node. This includes the entire design flow from examining comparator topologies, to designing the initial comparator circuits, to simulating the comparator …
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Development and testing of an impedance controller on an anthropomorphic robot for extreme environment operations
… on an anthropomorphic robot for operations in extreme, poorly mapped environments. First, a dynamic model was developed for a Baxter Research Robot. This model improved on standard dynamic models for similar robots by including the dynamics of the actuators in the system. Specifically, it was …
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The formation of high-mass stars and stellar clusters in the extreme environment of the Central Molecular Zone
… -- how sensitive is star formation to the local environmental conditions? How do massive and dense stellar clusters form, and how does this crowded environment influence the stars that form within it? How do the most massive stars form and is there an upper limit to the stellar initial mass …
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Variations in rheological properties and fundamental processing of potassium-based geopolymers for optimal 3D printed layer adhesion for applications in extreme environment
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Adaptive Resource Allocation Algorithms For Data And Energy Integrated Networks Supporting Internet of Things
… scenarios, the IoT nodes are fitted in some extreme environment. For example, a large-scale IoT pressure sensor system is deployed underneath the floor to detect people moving across the floor. A density-viscosity sensor is deployed inside the fermenting vat to discriminate variations in …
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Near-Net Shaping and Additive Manufacturing of Ultra-High Temperature Ceramics via Colloidal Processing
… such as the UHTCs, which find their place in extreme environment applications, precise control of each step of the manufacturing process is key. In this work, a fundamental study on the interaction between particles in non-aqueous slip casting is performed comparing the rheological behavior …
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Probing Galactic Magnetism near the Galactic Center with THOR-GC
… source may be a fast-moving neutron star in an extreme environment.
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Instrumentation and Control of a Novel Device to Simulate a Hypersonic Environment
… evaluation of material responses within this extreme environment. In order to provide a low-cost, rapid option for preliminary material analysis within hypersonic applications, a novel device is under production to replicate this environment on the surface of these materials. This device has …
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A place for play ... in post-conflict reconstruction
… or by income, race or ethnicity. The extreme environment of polarized cities therefore has a significant relevance within urbanism and the study of the built environment of cities in general. The physical markers of dichotomization imposed on the urban landscape, whether in the form of …
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Arctci-tecture for the global commons
Environmental agendas in architecture have enjoyed an increased attention recently, as a result of the emerging 'sustainable' design ethos. This framework of sustainability initiates a rethinking of the scale of an architectural site - a building must be understood as situated not only in a …
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Processing and deformation studies in high temperature ceramics
… properties, they have found a niche in several extreme-environment applications. Their properties also present challenges in fabricating fully dense parts and understanding the underlying mechanisms that governing plasticity in the intended operating temperature range. Here, each of these topics …
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Aerodynamic and Thermal Considerations for an Antarctic Ice Penetrator
… challenging to gather due to the remoteness and extreme environment of the RIS. In order to ensure an appropriate impact velocity and angle, SGIP’s aft-body must be sized to produce a drag force that results in a target terminal velocity of 42 m/s while remaining aerodynamically stable. A finite …
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USE OF MOLECULAR APPROACHES TO STUDY THE OCCURRENCE OF EXTREMOPHILES AND EXTREMODURES IN NON-EXTREME ENVIRONMENTS
A number of samples were collected from various extreme and non-extreme environments. A range of molecular approaches, in addition to classical microbiology techniques, were used to isolate microorganisms, mainly archaea and bacteria from unusual environments. Halo-bacteria and archaea from …
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Design and construction of high-temperature, high-vacuum tensile tester for fusion reactor materials
… is the survival of structural materials in the extreme environment of a fusion device. Specifically, materials that surround the 100 million °C plasma must survive high temperatures (>500 °C), intense thermal cycling, transient high heat loads, large structural forces during off-normal plasma …
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Magnetic Switches as Active Device Replacements for Harsh Environments
… drill and electrocrushing designs meant for extreme environment operation, outside of the normal operating parameters of most switching technologies available to the modern electrical engineer. Since the nonlinear behavior of saturating magnetics allows a switch type action, a diode like …
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