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 132 for “"Energy Budget"”.
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The energy budget of the stratosphere during 1965
… processes on the zonal momentum, heat and energy budgets for three layers of the 1965 stratosphere. Geostrophic wind components were computed from IQSY data at 100, 50, 30 and 10 mb for use in calculating the statistical quantities -used in the analysis. It was found that temporal and …
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The energy budget of the middle and upper stratosphere.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1973.
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An energy budget for the South African abalone Haliotis Midae
… to quantify both the individual and population energy budgets of the large edible gastropod Haliotis midae, and is divided into three major sections. Section 1 deals with diet and section 2 the consumption rate, absorption efficiency, respiration rate and rate of ammonia excretion, each of which …
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An Organic Energy Budget for the New York State Barge Canal
An annual energy budget is presented for the New York State Barge Canal, a first order man-made waterway in western New York. The ecosystem approach, in which all input and output of energy as organic matter are measured, is used to describe the energy flow in an 1130-meter segment of the canal. …
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Growth and the energy budget of juveniles of the abalone Haliotis tuberculata (L.)
… and temperatures (15, 18 and 22C) on growth and energy budget of juvenile abalone H. tuberculata over a 210 day period. Energy budget was obtained by Ingestion (I), Egestion (E), Somatic growth (Pg), Reproductive investment (Pr), Excretion (U) and Pedal mucus production (M). All these parameters …
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Linking individual-based models and dynamic energy budget theory : lessons for ecology and ecotoxicology
… In this thesis, I explored whether Dynamic Energy Budget (DEB) theory is suitable for being used as a standard submodel in individual-based models, both for ecological risk assessment and theoretical population ecology. First, I developed a generic implementation of DEB theory in an …
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Developing dynamic energy budget (DEB) models for small pelagic fishes in the Southern Benguela
Dynamic energy budget models are useful for describing energy flow in individual organisms as functions of their state (e.g., age, size, and energetic reserves) and environment (e.g., food and temperature). Anchovy (Engraulis encrasicolus), redeye round herring (Etrumeus whiteheadi) and sardine …
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Energy budget and foraging behaviour of the Cape gannet Morus capensis during the breeding season
This thesis deals with the energy expenditure of free-ranging Cape gannets Morus capensis breeding at Malgas Island, South Africa. I sought to determine the energy budget of family units and to extrapolate this to the whole population. Energy expenditure was measured using the doubly labelled water …
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Energy Budget Analysis of Slow-Slip Tremor Events Along the Cascadia Subduction Zone Using Continuous GPS Array Data
… half of the total tectonic convergence energy in the region, implying that approximately half of the energy will be available in the next megathrust earthquake. This inference is supported by agreement with observed interseismic deformation patterns, which is consistent with significant …
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Using a surface energy budget framework to characterize grass-biophysical response to changes in climate in support of on-farm decision making in Ireland
… a land surface scheme (LSS) based on a surface energy budget theory, available environmental observations, land surface and atmospheric analyses, to understand essential mechanistic factors that determine grass growth response across the Irish landscape. A soil moisture model parameter (C soil) …
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Spatiotemporal Variations in the Radiant Energy Budgets of Mars and Earth
A planetary body’s radiant energy budget is a critical geophysical parameter in the context of its climate. For a terrestrial planet, the delicate balancing between the absorbed solar power and emitted thermal power is directly responsible for the circulatory behavior its atmosphere (and oceans, in …
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Energy-Efficient, Utility Accrual Real-Time Scheduling
In this dissertation, we consider timeliness and energy optimization in battery-powered, mobile embedded real-time systems. We focus on real-time systems that operate in environments with dynamically uncertain properties, including context-dependent activity execution times and arbitrary activity …
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The structural and functional dynamics of selected species -populations of freshwater snails:towards a systems approach
… species is considered in terms of the classical energy budget statement and indicates that mucus secretions are important elements of their function and functioning. The philosophical implications of the mechano-reductionist, energy budget statement are discussed and criticised. The relevance of …
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Living costs of ocean acidification and warming in herbivorous gastropods and their adaptations
… Ocean acidification and warming can raise the energy demand of marine organisms, impacting their energy budget and ultimately survival. After a prolonged exposure period, I found that ocean acidification has limited effect on the energy budget and survival of subtidal gastropods (Thalotia …
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Understanding changes in precipitation with climate change over wet and dry land
… This study uses the perturbation atmospheric energy budget to understand the projected increase in precipitation over dry and wet land with climate change. Using global climate model output, the change in each term in the perturbation energy budget was calculated as a regional average over wet …
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Evaluation of the pathogenicity in goats of Trypanosoma Congolense from Matutuine, Mozambique
… One group (of four goats) was kept on a low energy budget (9.72 MJ of metabolizable energy per kg and 0.16 kg of digestible protein per kg) whereas another group (of four goats) was kept on a high-energy budget (9.72 MJ of metabolizable energy per kg and 0.09 kg of digestible protein per kg). …
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Simple Models for Complex Tropical Dynamics
… Circulation, and the modeling of the tropical energy budget. We begin with an examination of tropical SSTs and the ITCZ under warming, finding that the Hadley cells weaken and tropical SST gradients decrease in a warmer climate. The ocean's subtropical cells strengthen and transport more energy …
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Uncertainties in space-based estimates of clouds and precipitation: implications for deriving global diabatic heating
… weather and climate is driven by the exchange of energy between the sun, atmosphere, surface, and space and energy transport required to establish a global balance. Clouds and precipitation play an integral role in this exchange, enhancing reflection of solar radiation to space, trapping thermal …
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Assessment of RANS Turbulence Models for Hypersonic Flat Plates
… include velocity, temperature, turbulent kinetic energy, modeled turbulent kinetic energy budget terms, eddy viscosity, Reynolds stresses, heat fluxes, wall skin friction, wall heat transfer, and Reynolds analogy factor. Generally, the SA model performs better than the SST model in capturing the …
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The ecological energetics of the net-spinning caddisfly, Hydropsyche venularis Banks (Trichoptera: Hydropsychidae)
… The purpose of this study was to calculate energy budget equations for a net-spinning caddisfly, Hydropsyche venularis Banks, and to develop, or modify, methods used to determine consumption and growth in the field. The method used to determine consumption rate was a modification of the …
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