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 22 for “"Dust emissions"”.
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Dust emissions from grain handling and processing operations
Digitized by Kansas Correctional Industries
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Dust emissions from grain handling and processing operations
Digitized by Kansas Correctional Industries
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Investigation of Machinability and Dust Emissions in Edge Trimming of Laminated Carbon Fiber Composites
… machining, CFRP produces powder like chips or dust which are electrically conductive and currently classified as a nuisance particulate. Further machining challenges of CRFP include delamination, fuzzing, fiber pullout, and short tool life due to the inhomogeneity of the material and abrasive …
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Biosphere-atmosphere interactions over semi-arid regions : modeling the role of mineral aerosols and irrigation in the regional climate system
… and Northwest Africa. The interactions between dust emissions, irrigation, and climate processes are studied and quantified using a regional climate model to perform a series of carefully designed numerical experiments. The performance of the numerical model is tested by comparing simulation …
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Interactions Between Dust and Ecosystem, and Landscape at Multiple Scales
Atmospheric dust is the largest contributor to global aerosols from land. Dust emissions rate and properties are influenced by meteorological conditions, parent soil, and landscape, and in turn, it affects impacts on climate, ecosystems, and human societies through various pathways. This …
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Optical Remote Sensing of Airborne Particulate Matter to Quantify Opacity and Mass Emissions
… to obtain in-situ measurements of PM mass emissions for the dust plumes that are generated from unique military activities. The method was then tested in the field to measure dust emissions from artillery back blast and tracked vehicle movement in desert areas. Dust plumes were also …
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An Analysis of the Differences Between Two Seasonal Saudi Arabian Dust Storms Using WRF-Chem
… atmospheric conditions between two major dust storms in Saudi Arabia. These two types of dust storms occur annually over Saudi Arabia with different seasons, sources, and atmospheric dynamics. We analyzed the Sharav case study in the spring season from 31 March 2015 and the Shamal case …
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Comparison of three dust sources in Iceland: Dyngjusandur, Mýrdalssandur and Sandkluftavatn
Dust, a growing concern due to its impact on ecosystems and human health, has prompted increased research and awareness. This study focuses on dust source activity in Iceland, specifically in Dyngjusandur, Mýrdalssandur, and Sandkluftavatn. These locations are known as "hot spots" for dust events. …
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Unraveling the Mystery of Extreme trans-Atlantic African Dust Events: Insights from Case Studies
North Africa is the world’s largest source of dust. Each summer, the Saharan Air Layer transports massive amounts of mineral dust across the Atlantic Ocean, affecting weather, climate, ecosystem, and public health across large areas. While considerable attention has been devoted to extreme events …
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Simulating and quantifying land-surface biogeochemical, hydrological, and biogeophysical processes using the Community Land Model version 4
… variations. Last but not least, mineral dust, a type of atmospheric aerosol, alters surface radiation/energy balance, and may act as cloud condensation nuclei to modify precipitation rates and eventually the hydrological cycle. Therefore, we were motivated to investigate these processes …
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Оценка и снижение экологической опасности отвалов горного производства в Новороссийской промышленной агломерации
… of the cement factory in the Novorossiysk industrial agglomeration (NW Caucasus, Russia) are hazardous because of fugitive dust emissions, erosion and possible occurrence of a debris-flow disaster. Having high sorption capacity, dust accumulates pollutants contained in the atmospheric air and …
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Definizione di una metodologia integrata per la stima delle emissioni di PM da superfici di materiali granulari esposte all’erosione eolica
… matter (PM) from granular surfaces (industrial wind erosion). In industrial environments such as mining and metallurgical plants, granular materials, typically stored in open yards, can act as fugitive dust sources and affect air quality in surrounding environments. This work develops …
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Mineral dust lofting and interactions with cold pools
Convective dust storms, or haboobs, form when strong surface winds loft loose soils in convective storm outflow boundaries. Haboobs are a public safety hazard and can cause a near instantaneous loss of visibility, inimical air quality, and contribute significantly to regional dust and radiation …
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Sustainable advancements in rural infrastructure: Enhancing gravel road performance, stabilization, and intelligent monitoring
… persistent challenges, including excessive dust emissions, rapid surface deterioration, and inefficient monitoring, hinder effective maintenance. This dissertation addresses these challenges by developing an integrated context that combines predictive modeling, chemical stabilization, and a …
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Characterising South Africa’s major dust sources
… study investigates the surface controls of major dust emissions and determines the patial distribution of major dust source in South Africa. This study follows a multi-disciplinary approach where primary and secondary data were used. The main objective of the study is to determine the spatial …
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Variability, origin and physical characteristics of dust aerosol in Iceland
Emissions of particulate matter from the natural sources account for a significant part of the total particulate air pollution. Less industrialized and inhibited regions, such as deserts, can contribute remarkably to air pollution. Iceland is a good example of such areas. The trends in long-term …
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Managing rangeland change in New South Wales for landscape repair
… with the focus on direct measurement of dust emissions. However, in the past decade there has been a pivot towards using remote sensing products to monitor groundcover as a proxy for dust, allowing more flexible and adaptive monitoring regimes. This in turn creates an opportunity to …
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Environmental change and soil organic carbon storage in a dust emission hotspot, Free State, South Africa
… management practices which may contribute to dust emissions and soil loss, a common symptom of land degradation. The goal of this study was to establish how the shift in land cover or land use change affects the occurrence of dust and determine the climate constraints and mitigations to crop …
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Simulations and projections of major air pollutants over the United States and uncertainty analyses, effects of natural change and human activities
Changes in global climate and pollutant emissions are very likely to continue in the coming decades driven by the human-related activities and natural fluctuations in the Earth climate system. These potential changes would have very important consequences on regional air quality over the contiguous …
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