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 149 for “"Air temperatures"”.
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A Study of Air Temperatures within Croupettes
… study was conducted to find the variations in air temperature which occur within Croupettes during treatment of infants and small children with respiratory infections, and to discover some of the factors which influence change of air temperature. Fifty children, two months to three years of …
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The semiannual cycle of sea surface and free air temperatures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
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Measurement of air temperatures and velocities in the fiber glass forming environment
… operating conditions. Experimental data on air temperatures and velocities were recorded within the forming environment without water sprays. Trials were run using an apparatus similar to one used in production, but of a much smaller scale. In production, a granular batch is continuously fed …
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How air temperature affects flight initiation distance in arid-zone birds
… conducted to try and understand how increasing temperatures will impact bird communities and population persistence in these areas. Understanding the mechanisms through which birds are vulnerable to climate change is key to answering these questions. This study investigated how changes in air …
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The critical seed-filling period duration is dependent on soybean planting date and cultivar maturity selection: implications for crop management
… rate, perhaps related to lower late-season night temperatures for the full-maturity cultivars meant that the longer seed-filling period did not result in higher yields. To investigate more closely how late-season air temperatures may interact with cultivar maturity. We used 92 total site-years of …
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Chironomid-based paleotemperature reconstruction of the North Slave Region, Northwest Territories during the Late Holocene
I reconstructed late Holocene mean July air temperatures using a chironomid-based inference model based on lake sediment collected from two shallow lakes within the North Slave Region, Northwest Territories. No significant shifts were identified in the chironomid species assemblages, which …
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Modeling of opening characteristics of an atrium in natural ventilation
… buildings to provide social contact, daylight, air circulation, and aesthetic requirements. Buoyancy-driven ventilation systems are common because they can maintain suitable thermal comfort and reduce energy. Modeling techniques used to simulate naturally ventilation include analytical models, …
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Influence of Isolate, Cultivar, and Heat Stress on Virulence of Rhizoctonia zeae on Tall Fescue
… determine the impact of prior exposure to high air temperatures on the severity of disease. Preliminary data showed that one week of exposure to higher air temperatures caused an initial increase in overall turf quality, but as length of exposure increased the quality of turfgrass declined. Tall …
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Statistical Modeling and Analysis of Bivariate Spatial-Temporal Data with the Application to Stream Temperature Study
… factors affecting stream water temperature, air temperature is one of the most important factors related to water temperature. To appropriately quantify the relationship between water and air temperatures over a large geographic region, it is important to accommodate the spatial and temporal …
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An experimental investigation of mixed convection heat transfer in a rectangular enclosure
… office size, rectangular enclosure. Surface and air temperatures were measured, convective heat fluxes were calculated, significant parameters were identified, and Nusselt number correlations were developed for various flow field and surface temperature configurations. Buoyant, mechanically …
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Historical Hydroclimatic Change At Theodore Roosevelt National Park: 1895 - 2011
… and mean minimum (T<sub>min</sub>) air temperatures at the 95% significance level. The mean annual air temperature increased at a rate of 1.6°C per century, while the mean annual maximum (T<sub>max</sub>) and minimum air temperatures increased at rates of 0.9°C and 2.1°C per …
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The role of atmospheric and oceanic forcing in Greenland outlet glacier behaviour
… sea surface temperature data and surface air temperature records from coastal Greenland weather stations were used to evaluate the respective roles of atmospheric and oceanic forcing on frontal position variations of Helheim, Kangerdlugssuaq Glacier and Jakobshavn Isbrae. At the seasonal …
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Oxygen dynamics in the bottom waters of lakes: Understanding the past to predict the future
… and dissolved oxygen. I demonstrated that spring air temperatures may play a greater role than summer air temperatures in shaping summer bottom-water dynamics. I then characterized the effects of declining bottom-water oxygen concentrations across diverse scales of analysis (i.e., using microcosm …
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Climatic variation, solute concentration and solute flux in meltwaters draining from an alpine glacier
… Since the 1970s, in the European Alps, warming air temperatures have resulted in increases in discharge from glacierised catchments.
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Development and evaluation of a wood furnace for grain drying
… for mixed and indirect heating of the drying air. The design of the combustion chamber volume, combustion cell, grate area, and heat exchanger were based on the following demands: thermal energy from 15 to 30 kW (12,898 to 25,795 kcal. h -1 ), drying air flow rate from 35 to 45 m³ min -1 and …
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Evaporative drying of cupric-chloride droplets in a thermo-chemical cycle of hydrogen production
… of water in CuCl2 slurry drying at low air temperatures.
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The Impact of Different Passive Roof Construction Types on Building Thermal Performance / Experimental Method for Optimizing the Thermal Performance of Building Enclosures
… surface area and can be utilized to minimize the air and surface temperatures of urban areas. The impact of solar radiation on clear days and the loss of heat during the night all affect the roof more than any other component of the building. The research in this dissertation demonstrates an …
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Study and prediction of the energy interactions between buildings and the urban climate
Urbanization produces higher air temperatures in cities than in the undeveloped rural surroundings. This phenomenon is known as the Urban Heat Island (UHI) effect and has been measured in different cities around the world. Conventional building energy programs use standard meteorological databases …
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Evaluating Overheating Preventative Measures in Residential Buildings and Passive Survivability
… internal heat loads. Additionally, indoor air temperatures are impacted by solar heat gain from glazed openings and heat transmitted by conduction through exterior wall surfaces. Natural ventilation strategies can reduce indoor air temperatures and increase air velocities close to the skin. …
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Determination of the thermoneutral zone in young males and females
… room. Subjects were exposed to 7 different air temperatures ranging from 15 to 36{dollar}\sp\circ{dollar}C. Values for the measurements were observed at each temperature. The estimated thermoneutral zone (TNZ) for the males in this study ranged between approximately 27 and …
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