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.
Results
Showing 1 to 9 of 9 for “"DNBR"”.
-
Evaluating dNBR and CBI for Fire Severity Estimation in Fennoscandian Boreal Surface Fires
… of the differenced Normalized Burn Ratio (dNBR), a widely used satellite-derived spectral index, and the Composite Burn Index (CBI), a field-based ground truthing index, in estimating fire severity following a low- to moderate-intensity surface fire in Fennoscandia. Using a prescribed burn …
-
Greenhouse Gas Production and Nutrient Reductions in Denitrifying Bioreactors
… excess nitrogen, and denitrifying bioreactors (DNBRs) are an emerging technology harnessing this biochemical process. Previous DNBR research has established successful nitrate removal, whereas this study examines the potential to expand DNBR functionality to address excess phosphorus and …
-
Autonomous Experimentation to Accelerate Boiling Heat Transfer Research
… the Departure from Nucleate Boiling Ratio (DNBR) using unprocessed, time-dependent infrared radiation distributions without prior knowledge of heat flux, achieving over 95% accuracy. This methodology enabled online and quasi-real-time monitoring of DNBR and estimation of Critical Heat Flux …
-
Impact of Biochar Amendment, Hydraulic Retention Time, and Influent Concentration on N and P Removal in Horizontal Flow-Through Bioreactors
… In the mid-1990s, denitrifying bioreactors (DNBRs), a subsurface, edge-of-field best management practice (BMP) that intercepts and treats agricultural drainage by supporting nitrate-attenuating denitrification with a saturated, carbon-filled substrate, were developed. Since then, their …
-
Innovative fuel designs for high power density pressurized water reactor
… array, since the hot red will have a balanced MDNBR in the inner and outer channels. With proportional increase in coolant flow rate, this annular fuel can increase PWR power density by 50% with the same DNBR margin, while reducing by 1000 'C the peak fuel temperature. Five issues involving …
-
Determining primary drivers of river bead functionality in mountain headwater streams
… as well as delta normalized burn index (dNBR) and catchment slope, which approximate sediment inputs into the stream corridor. Biotic driver variables include wood load, beaver modifications, and riparian vegetation. Response variables include normalized difference vegetation index …
-
Resposta espectral da vegetação desidratada e valoresde NBR (Normalized Burn Ratio) obtidos via dados MSI Sentinel – 2 em regiões tropicais
… analisou-se a dinâmica do NBR e a sua variação dNBR (pré e pós-fogo) a qual, está correlacionado com a severidade de queima. Constatou-se que a resposta da vegetação combustível pré-queima é bem diferente da vegetação verde, com exceção da floresta Amazônica, onde o fogo é colocado em áreas com …
-
Beaver moderated fire resistance in the North Cascades and potential for climate change adaptation
… comparing post fire burn severity, measured as dNBR, within valley bottoms and upland zones. Potential plant water stress of riparian grasses, shrubs, and upland conifers was compared at one site and a paired reference reach at the beginning, middle and end of the fire season using NDVI analysis …
-
Biochar and pH as Drivers of Greenhouse Gas Production in Denitrification Systems
Nitrous oxide (N2O) is a greenhouse gas (GHG) with 300 times the radiative forcing in the atmosphere of carbon dioxide (CO2), and has recently become a subject of great concern because the nitrogen (N) fertilizers which have been necessary to increase agricultural productivity have also …