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 12 of 12 for “"pine needles"”.
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Experimental analysis of stove top designs for pine needle combustion in a semi-gasifier burner
… role that the stove top plays in a stove where pine needles are the main fuel source. Pine needles have distinct characteristics in their combustion cycle that make it challenging to effectively harness the energy released for cooking purposes. Processed pine needles are currently used as a fuel …
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Characteristics of pine needle combustion in a semi-gasifier burner
… was to develop a stronger understanding of pine needle combustion behavior in a semi-gasifier, in order to ultimately design an effective pine needle cook stove for people in the developing world. Pine needles are a cheap, energy-dense fuel source that can be harnessed for cooking purposes, …
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Nutrient Cycling Between Litters and Soil after Fire in Native Woodland and Pinus radiata Plantations
… and the effects of thermal alteration of pine needles on soil nitrogen cycling and the soil microbial biomass. The materials for this work were generated from forestry reserves that had recently been exposed to an uncontrolled fire. These reserves included Eucalyptus woodlands (‘native’) …
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Local Variation in the Chemical Defence of European Pine Sawfly (Neodiprion sertifer): Effects of Host Tree Chemistry and Social Environment
… distributions and local abundances. The European pine sawfly (Neodiprion sertifer) is an example of a chemically defending forest pest insect that sequesters resinous acids from the host plant for its antipredator defence. It is also a social insect that feeds and defends cooperatively in a group …
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A molecular characterization of the fungal endophytes within the needles of ponderosa pine (Pinus ponderosa)
… studied, the endophyte communities within the needles are not well characterized by molecular means: thus, the goal of this study was to do so. Needles were sampled at two sites located five kilometers apart along a slight precipitation gradient in Eastern Washington State. Fungal DNA (along …
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Soil Carbon and Nitrogen Dynamics Across the Hillslope-Riparian Interface in Adjacent Watersheds with Contrasting Cellulosic Biofuel Systems
… watershed treatments. Decomposition of loblolly pine needles was assessed in each watershed using an in situ litter bag method. Seasonal in situ net nitrogen mineralization was measured using a sequential core method, and an anaerobic incubation for N mineralization potential of composite soils …
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Effects of Moisture on Combustion Characteristics of Live California Chaparral and Utah Foliage
… correlations based on fires burning through dead pine needles. There is a need to increase the accuracy of modeling wildfires in live vegetation. This project investigates the quantitative and qualitative ignition characteristics of eight live fuels, four from southern California (manzanita, scrub …
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Discovery and characterisation of viral-like sequences and viruses associated with Phytophthora pluvialis in New Zealand
… of PplRV1 via zoospores was 100%. A detached pine needle assay showed that the RNC symptoms developed on pine needles inoculated with PplRV1b-infected P. pluvialis were more severe than PplRV1b-cured P. pluvialis. These combined results suggest PplRV1b may induce hypervirulence in P. …
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Soil weathering under mountain pine beetle killed trees, Grand County, Colorado
… in soil weathering processes under mountain pine beetle killed trees, as compared to soil weathering under living trees. As pine beetle (Dendroctonus pondersoae) infected trees die, pine needles are shed and accumulate on the forest floor, which may lead to changes in soil pH and soil …
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Structure and function of western red cedar and western hemlock forests on northern Vancouver Island
… rate of a standard substrate, lodgepole pine needles was almost the same in the two types, suggesting that environmental conditions for decomposers are similar in the two types. Cedar foliar litter in the CH type decomposed more slowly than the foliar litter of other species in either …
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Weathered
<p>Weathered focuses on themes of change, accumulation, time, and acceptance. Each artwork holds layers of information and experiences that form a unique narrative for all its viewers. The construction of each piece is a symbol of the physical ability it takes to create each painting. After my …
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The dynamics of litterfall in eucalypt woodland surrounding pine plantations
… and in particular, the invasive species radiata pine (Pinus radiata D. Don) is of considerable concern. Radiata pine has a very limited distribution in the northern hemisphere in its natural range. Its utility in the timber and manufacturing industries, however, has lead to widespread planting, …