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 144 for “"Heat Dissipation"”.
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Heat dissipation from carbon nano-electronics
… device packaging holds much promise for waste heat management given their high thermal conductivities. However, as these graphitic materials must be used in together with other semiconductor/insulator materials, it is not known how thermal transport is affected by the interaction. Using …
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Manipulation of Heat Dissipation from Sides of Electrolytic Cells
… However operating the cells with higher heat input (or out of the cell’s thermal operating window) at one stage is encountered in many smelters. Hence, various cell design modifications are required to cope with such extra heat input to maintain cell thermal balance The objective of this …
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Design for selective remote control of cellular signaling using magnetic nanoparticles
… control a targeted biological circuit. Heat dissipating properties of magnetic nanoparticles have garnered sustained research interest in biomedical applications, including drug release, cancer hyperthermia, and neural stimulations. However, research has been mainly focused on improving …
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Multi-physics modeling of heat and particle transfer in porous media
… main components: underground duct-bank thermal dissipation considering the convection heat transfer in porous media and the filtration mechanisms of bentonite grout in porous media. In the first part, the study challenges traditional underground duct-bank design assumptions and introduces a …
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Thermal pollution modeling of the New River
… river model, under summer conditions, to see how heat dissipation and thermal plume characteristics would change. No appreciable difference in the heat rise of the river with the diffuser was detected; however, initial heat dissipation was greater. A description of modeling methods, Froude scaling …
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Power And Hotspot Modeling For Modern GPUs
… computing platforms, power and thermal dissipation are getting more attention. The trade-offs among performance, power, and heat must be well modeled and evaluated from the early stage of GPU design. This necessitates a tool that allows GPU architects to quickly and accurately evaluate …
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Theoretical and Computational Generalizations on Hyperthermia using Magnetic Nanoparticles including Optimization, Control, and Aggregation
… to demonstrate the advantages of changing IONP heat dissipation in time, which can increase energy density inside tumors while decreasing the energy delivered in healthy tissue. Here, this is defined as target-specificity. Second, this model is used to demonstrate that time-dependent IONP heat …
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Study of Surface Tension, Natural Evaporation, and Subcooled Boiling Evaporation of Aqueous Surfactant Solutions
… studied in relation to water loss prevention and heat dissipation. Surfactants could be useful under drought conditions which present challenges to water management on a yearly basis in arid areas of the world. Recent water scarcity in the greater Los Angeles area, south eastern Africa nations, …
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Heat tolerance of Southern Pied Babblers in the Kalahari Desert : how will they respond to climate change?
… effort and efficiency and the presence of heat-dissipation behaviours were assessed to determine the mechanisms by which increased temperature affect babbler body condition.
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Efficient mobile computing
… 6 GPU cores and caches. Due to power-density and heat-dissipation constraints of such integration level, providing high performance on demand in an efficient way is a complex control problem. In the A10 architecture, assigning the right cores at the right time to running threads is a challenging …
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Refurbished and 3D Modeled Thermal Vacuum Chamber
… The ATS Chiller was able to absorb up to 500W of heat dissipation from a component mounted to the platen inside of the vacuum chamber.</p> <p>Thermal modeling of the apparatus was performed in Thermal Desktop. The model was incorporated with the test data to extract interface resistance …
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A framework for dynamic characterization and short-term thermal capability assessment of electric machines and inverters in motor drives
… and experimental approaches. Three decoupled heating regimes that characterize time ratings ranging from modest to severe overloads are identified. The characterizations show that recent general-purpose open-drip-proof induction machines can handle up to 25 times more heat dissipation than …
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Switching density analysis for power and reliability in VLSI circuits
… becomes a serious concern for packaging, heat dissipation, and energy efficiency reasons. Reliability of such complex circuits also is a serious design concern since failure of a single transistor may induce functional failure of the entire circuit. In this thesis, four key issues relating …
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A piezoelectric translational flow agitator for active air cooling of electronics.
As heat dissipation from electronic components dramatically increases due to the rapid development of integrated circuits with micro-nano fabrication, the need increases for powerful cooling facilities. Different cooling schemes such as liquid cooling, direct sprays, boiling heat transfer, etc. …
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Distributed Modeling Approach for Electrical and Thermal Analysis of High-Frequency Transistors
… of different semiconductor substrates. Heat dissipation issues associated with some substrate materials, such as sapphire, silicon, and silicon carbide are identified, and thinning the substrates is proposed as a preliminary solution for addressing them. This leads to a comprehensive and …
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Thermal Management of Power Electronic Building Blocks
… scheme that will manage the module's high heat dissipation levels. As temperatures in electronics are closely associated with operating efficiency and failure rates, management of thermal loads is necessary to ensure proper and reliable device performance. The current work investigates the …
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ΘΕΡΜΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΚΑΙ ΒΕΛΤΙΣΤΕΣ ΔΙΑΣΤΑΣΕΙΣ ΚΥΚΛΙΚΩΝ ΠΤΕΡΥΓΙΩΝ ΠΟΥ ΠΕΡΙΕΧΟΥΝ ΘΕΡΜΙΚΕΣ ΠΗΓΕΣ
… ARE SPECIFIED BY THE PROBLEM, NAMELY THE DESIRED HEAT DISSIPATION Q, OR VOLUME (V) OF FIN, THE THERMAL PARAMETERS H,K,ΘΒ AND THE HEAT GENERATION (9G). THE RESULTS ARE GENERALIZED BY EXPRESSING THE DIMENSIONLESS BASE THICKNESS AND WIDTH OF THE FIN WHICH ARE DEFINED IN THE TEXT OF THIS THESIS, AS …
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Comprehensive modeling of thin film evaporation in micropillar wicks
… As the power density of these devices increases, heat dissipation threatens to become the limiting factor for growth in the electronics industry. In order to sustain rapid growth, the development of advanced thermal management strategies to efficiently dissipate heat from electronics is …
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Fabrication process for openable microfluidic devices and externally actuated microfluidic switch
… substrate provides channel strength and short heat dissipation times, and the use of aluminum oxide enhances light energy absorption, which provides the possibility of further laser actuation. Also, the combination of micro fabrication process and actuation technique makes possible the further …
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INVESTIGATIONS OF OXIDE AND SULFIDE BASED LOW DIMENSIONAL NANO STRUCTURES FOR CONDUCTOMETRIC GAS SENSORS, MEMRISTORS AND PHOTODETECTORS
… measurements. Further, the effect of self heating in some nanostructures was also explored. Since self-heating is a prospective power-efficient energy delivery channel to the conductometric chemical sensors that require elevated temperatures for their operation, the unprecedentedly low …
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