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 2489 for “"Greenhouse"”.
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Greenhouse Tomatoes: Process Simulation
… technology of significant interest is the use of greenhouses for food production. Greenhouses create a stable and adaptable environment for crops such as tomatoes to grow year-round. Fresh tomatoes are the second most consumed vegetable per capita in U.S. diets, currently averaging 20.7 pounds. …
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Greenhouse climate model : an aid to estimate the influence of supplemental lighting on greenhouse climate
GeoGreenhouse project involves the construction of a greenhouse for growing tomatoes in Iceland. The first stage consists of a gross area of five hectares. Due to the peculiarities of such project and because of the unique weather, a greenhouse climate model is advisable to analyze various design …
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Greenhouse gas metabolizing prokaryotes in peatlands
… processes involved in the fluxes of the greenhouse gases methane (CH4) and nitrous oxide (N2O) from peatlands. Five model peatlands with contrasting features (e.g., nitrate content, mean annual temperature, pH) were assessed. A pH-neutral fen produced CH4 in situ as well as in …
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The management of local greenhouse gas emissions.
… being taken at various spatial levels to reduce greenhouse gas emissions. Most efforts at the local level are focused on the development and implementation of policies to tackle climate change but there is little research on how their progress is measured. This thesis explores the progress of UK …
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Trace Greenhouse Gas Fluxes in Upland Forests
Tree stems can act as a conduit for trace greenhouse gases (GHG) produced in the soil. However, the majority of studies describing tree stem fluxes of methane (CH₄) and nitrous oxide (N₂O) have focused on wetland ecosystems. Tree stem fluxes of GHGs on free-draining soils are understudied, but they …
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Quantifying greenhouse gases in business supply chains
… must explore a variety of methods for reducing greenhouse gas (GHG) emissions. Whilst national governments and international organisations enact treaties and frameworks, the role of business as a driver of increasing GHG emissions is also being examined. In these circumstances the measurement of …
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Automated Pruning of Greenhouse Indeterminate Tomato Plants
… are contributing to the depleting profits of greenhouse tomato farmers. Rises in population are the driving force behind the need for efficient growing techniques. The major contribution of this thesis is a computer vision algorithm for detecting greenhouse tomato pruning points without the …
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Anemometry tools and procedures for greenhouse experiments
Greenhouses provide a useful environment for conducting plant studies, facilitating manipulation and measurement of many variables in the plant microclimate. Photosynthesis, transpiration, thigmomorphogenic responses, and particle transport all depend on the level of air speed at the …
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Greenhouse Democracy: A Political Theory for Climate Change
… problem of climate violence, I end by outlining ‘greenhouse democracy’ a set of ecologically sensitive democratic commitments and provocations. According to greenhouse democracy the experience of living under the threat of climate violence, rather than any official citizenship granted by states, …
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The greenhouse tomato industry in Delta, British Columbia
This focus of this dissertation is the greenhouse tomato industry in Delta, British Columbia. Using a conceptual framework assembled from Regulation theory (including the concept of food regimes) and the political economy of agriculture, I explore the origins and development of the industry in …
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Variability in greenhouse gas footprints of crop production
Contains fulltext : 230400.pdf (Publisher’s version ) (Open Access)
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Influence of temperature on flowering of greenhouse carnations
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Horticulture, 1952
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Midlatitude Storm Track Response to Increased Greenhouse Warming
… the storm track response to increased greenhouse warming and the dynamical mechanisms driving the changes in the storm tracks. First, by analyzing the eddy statistics simulated in the Geophysical Fluid Dynamics Laboratory (GFDL) CM2.1 model simulations (IPCC AR4 model), we confirm the …
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Modeling an integrated all-season passive greenhouse design
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Evaluating greenhouse gas emissions from Illinois agriculture systems
… their long-term impacts on crop yields and soil greenhouse gas (GHG) emissions. Likewise, the inclusion of cover crops (CCs) has been proposed to scavenge surplus soil N, which might lead to a decrease in the substrate needed for N2O production from the field and aqueous N losses. In chapter 2 of …
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Greenhouse gas equivalency metrics for evaluating energy technologies
This thesis addresses a long-standing question about how to compare energy technologies that emit different types of climate forcers during their life cycles. This problem is challenging because these forcers have dissimilar lifetimes in the atmosphere, ranging from days (black carbon) to decades …
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Modelling greenhouse gases in a general equilibrium model
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Development of a Greenhouse Tobacco Seedling Performance Index
… controlled laboratory conditions. However, under greenhouse conditions, seed lots with equal 14-d germination may exhibit substantial differences in uniformity of early seedling growth and spiral root incidence that impact the number of usable transplants. A seedling performance index (SPI) was …
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Molecular Characterization of Viruses Infecting Greenhouse Vegetables in Ontario
Greenhouse vegetable production is a very important and successful agricultural sector in Ontario. However, newly emerging viral or virus-like diseases have become a major limiting factor in greenhouse vegetable production. To determine the identity of the viral pathogens in the three major …
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