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 180 for “"regrowth"”.
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Optimization of Growth Parameters for Algal Regrowth Potential Experiments
… A standardized methodology for conducting a regrowth potential experiment was outlined by the research. One phase of this methodology included reintroduction of nutrients consumed during the first round of growth. Prior to continuing with this methodology the effect of supplementing trace …
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Measuring tropical forest disturbance and regrowth with spaceborne lidar
… answer ecological questions about the impact of regrowth and disturbance in tropical forests. In doing so, I argue that GEDI can be used to monitor tropical forest changes – sometimes, in unexpected ways that exceed the limitations assumed by prior research. This finding has important …
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Regrowth-free monolithic vertical integration of passive and active waveguides
… material substrate wafer. Existing methods use regrowth techniques to selectively replace material around the chip, but regrowth is expensive and time consuming. This work vertically integrated a passive waveguide above an active waveguide using regrowth-free monolithic integration. The passive …
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Regrowth of Chlorella sorokiniana on Recycled Media with Replenished Nutrients
… that inhibition was observed in each round of regrowth. The productivity growth rate (OD<sub>750</sub>/day) of DOE1412 was not inhibited in media recycled 1-3 times. The productivity growth rate of DOE1412 was inhibited by 13±3% when grown in media recycled 4 times with a 99% level of …
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Critical factors controlling regrowth of opportunistic pathogens in premise plumbing
… the factors driving their occurrence and regrowth mechanisms, and also the complexity of premise plumbing conditions. The goal of this study is to identify key factors governing occurrence of opportunistic pathogens in drinking water distribution systems, particularly premise plumbing, via …
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Carbon storage during the regrowth and conversion of Virginia Piedmont forests
Recent increases in atmospheric carbon dioxide caused by the combustion of fossil fuels and tropical deforestation may result in global warming. Carbon accumulation by regrowing temperate forests, in regions such as the southeastern United States, may have been extensive enough to counterbalance …
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Regrowth analysis of alfalfa (Medicago sativa, L.) during three seasons in 1966
The rate of alfalfa regrowth during three seasons was associated with different parameters with the objective of finding a most suitable date of cutting in each season. The rate and total dry matter produced was higher during spring and early summer seasons than in late summer. The higher L.A.I. …
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Growth analysis and regrowth potential of three cool season grasses in spring
… Schreb., and Bromus inermis L. along with the regrowth potential under field conditions and under controlled environments (in light at three temperature regimes and in the dark at one temperature) for different stages of growth were studied. The analysis of the accumulating canopies showed that …
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Effects of defoliation on regrowth and carbon budgets of three semi-arid Karoo shrubs
Plant regrowth, nonstructural carbohydrate utilization patterns, photosynthesis and the partitioning of photosynthetic products in response to foliage removal were studied for the following karoo shrubs: Osteospermum sinuatum, a dwarf deciduous shrub with fleshy leaves, Pteronia pallens, a dwarf …
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Factors Affecting the Regrowth of <i>Ilex glabra</i> in a Routinely Burned Longleaf Forest
… stems/m<sup>2</sup> and factors affecting the regrowth of <em>I. glabra</em> after a prescribed burn to gain beneficial knowledge for management purposes. Environmental factors and morphological parameters of <em>I. glabra</em> were sampled before and after a prescribed burn of the Longleaf …
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Design and fabrication of single-mode tunable lasers for regrowth-free monolithically integrated photonic circuits
… the case of the photonics fabrication, epitaxial regrowth and advanced lithography steps are slow and expensive parts of the fabrication, and are one of the first targets for streamlining the process. In addition to reducing the cost of the fabrication itself, the integrated electronics approach …
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Regrowth of E. coli and S. faecalis in treated sewage after chlorination in a continuous-flow reactor
The objective of this study was to examine the regrowth of E. coli and &. faecalis in chlorinated, secondary-treated sewage effluent using a continuous flow system. Regrowth was evaluated at varying chlorine contact times and chlorine residuals. In addition, chemical and physical characteristics of …
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Effect of Standard Post-harvest Interventions on the Survival and Regrowth of Antibiotic-Resistant Bacteria on Fresh Produce
Raw vegetables can sometimes be the source of outbreaks of human illness; however the potential for fresh vegetables to serve as a vehicle for antibiotic -resistant bacteria is poorly understood. Antibiotics and antibiotic-resistant bacteria have been shown to persist in manure of animals …
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Regrowth of Festuca hallii (Vasey Piper) and Stipa curtiseta [(A.S. Hitch.) Barkworth] following defoliation on a hummocky landscape in Central Saskatchewan
A 4-year study was conducted on the Missouri Coteau in the Mixed Grassland Ecoregion of Saskatchewan to determine the effects of mowing to a 7.5 cm stubble height on the growth of Festuca hallii (Vasey) Piper and Stipa curtiseta (A.S. Hitch.) Barkworth. Green standing crop (GSC), dead standing crop …
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Effects of Clearcutting with Whole Tree Harvesting on Woody and Herbaceous Plant Diversity After 17-Years of Regrowth in a Southern Appalachian Forest
This study examines the effects of clearcut regeneration with whole-tree harvesting on plant diversity. Three approaches were used to study changes in species composition and structure: (1) forest level, (2) stand level, and (3) diversity indices. Within each approach the forest was stratified into …
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Impact of Flow Rate and Water Age on Opportunistic Pathogen Growth: Implications for Water Conservation, Fixture Design, and Policy
… disinfectant residual presence, and microbial regrowth in hot and cold pipes. In cold water, total bacterial regrowth was a function of water age, plateauing after approximately 6 days at cell counts 20 times higher than influent water with minimal disinfectants. In warm (40 °C) water, most …
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Effect of Various Water Chemistry Factors on Legionella Proliferation and the Premise Plumbing Microbiome Composition
… methods for control of L. pneumophila and total regrowth. The first line of study involved a series of experiments with simulated glass water heaters (SGWHs) to investigate interactions between specific water chemistry factors and L. pneumophila regrowth, and the second used laboratory grade …
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Canada Thistle Management Systems for Sustainable and Organic Farms
… accessions to evaluate morphological traits, regrowth potential, and suitability for cover cropping and biofuel applications. Canonical variates in Canonical Discriminant Analysis (CDA) indicated that the traits of unmowed tiller number, regrowth tiller number, and regrowth biomass were the …
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Leaf area index, light penetration, and carbohydrate reserves during growth of Kentucky 31 tall fescue (Festuca arundinacea Schreb.)
… and carbohydrate reserve fluctuations during regrowth under different growth stages and cutting managements of Kentucky 31 tall fescue were studied in three field experiments during spring and summer. Stages of growth (vegetative to reproductive) had marked influence on LAI development and …
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