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 69 for “"smog"”.
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Photochemical smog in greater Cape Town
Photochemical smog is the name given to a complex sequence of chemical reactions that occurs in the presence of sunlight. These reactions comprise a mix of organic and inorganic compounds, including a number of toxic secondary pollutants such as ozone (O3) and peroxyacetyl nitrate. These substances …
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Even slower : the great smog of Beijing
… not extensively altered the intensity of the smog-filled sky. This phenomena have generated an opportunity to redefine the position of architecture within the context of slow catastrophe in the form of the corrupted air particles. Instead of appearing to be physically and mentally defective, …
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Experimental Studies of the Heterogeneous Kinetics of OH Radicals with terbuthylazine, Adsorbed on Self- Synthesized SiO2 Particles, in a Temperature Controlled Aerosol Smog Chamber
Atmospheric lifetimes of pesticides are limited by reactions with OH, which have been studied for a long time. Most studies were focused on the gas phase and only very few experiments on semivolatile pesticides investigated their OH reactions with aerosol-borne compounds. In this work, the reaction …
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Photochemical oxidant air pollution : peroxyacetyl nitrate (PAN) as an indicator of photochemical activity
Photochemical smog is formed by the interaction of sunlight with nitrogen oxides and hydrocarbons. These precursors are principally emitted by anthropogenic sources. As the major component of the photochemical oxidants is ozone, it is used as the indicator of photochemical smog and air quality …
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Enabling seamless wide area migration of online games
… To meet these requirements, we propose SMOG, a framework that dynamically migrates game servers to their optimal location, using orchestrated route control to optimize the network path to the server. Through deployment of a prototype implementation on a Tier-1 ISP's backbone and a user …
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Air pollution in Christchurch: the current state of affairs
… city in the world to suffer a "Los Angeles" type smog in summer and also a "London" type smog in winter." International Union of Air Pollution Prevention Associations, 1977. This article is an attempt to fill a gap in the literature relating to air pollution in Christchurch. Most, if not all, …
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BUILDING A MODEL TO SIMULATE PROTEIN AGGREGATION AT ATOMISTIC DETAIL.
… The first version was based on a software called SMOG which creates SB models using a protein structure as input. In the first year I developed a python script to merge different SMOG models into one and perform MD simulations using GROMACS. The method was developed using a short peptide derived …
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Relationship between Adult Patient's Reading Levels and Comprehension of Consent Form
… of a selected patient consent form using Fry and SMOG formulas, (b) determine the reading levels of the participants using WRAT-R Level 2 Reading subtest, (c) determine the participants comprehension of the consent form using the Cloze technique, and (d) determine the relationship between the …
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Product descriptors for early product development : an interface between environmental experts and designers
… depletion, acidification, eutrophication, winter smog, and summer smog.
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Rising temperatures and expanding megacities : improving air quality in Mexico City through Urban Heat Island mitigation
… ambient temperatures help speed the formation of smog. This study examines what Tokyo and Singapore have done in terms of an UHI mitigation plan, analyzes what can be done to reduce the UHI effects in Mexico City to improve air quality and quantifies the effects of potential physical changes. …
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Experimental and theoretical examination of the chemical kinetics of a pollutant coating on porous particles
… - between gas and particle phase. In an aerosol smog chamber could be simulated the atmospheric degradation of airborne substances through hydroxyl radicals. The smog-chamber was cooled on 2 and -10°C and the degradation kinetic of semivolatile substance (Aldrin) coated on fine quartz particles …
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Aqueous Atmospheric Species, a Dual Study: 1. Comparison of the Effects of Temperature, Oxygen Level, Ionic Strength, and pH on the Reaction of Benzene with Hydroxyl Radicals at the Air-water Interface to the Bulk Aqueous Phase. 2. Determination of Carbonyl Compounds in Fog Water Samples via Online Concentration and HPLC
… (SOA) and are precursors to photochemical smog. In order to better understand fog/smog processes and characterization, fog water samples, collected in Baton Rouge, LA, were analyzed for aldehydes and ketones with a method adapted from U.S. EPA Method 8315A. By using a manual injection …
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Elucidating the chemistry of particulate and chlorinated nitrates in the troposphere through method development, and chamber and field studies
… (SOA) was investigated in a newly constructed smog chamber. Uptake probabilities (γ) were determined by box modeling constrained to measured ClNO2 mixing ratios and SMPS derived aerosol surface area. An upper limit of γ< 4x10-4 was determined for (NH4)2SO4 and NH4HSO4 aerosol, but larger values …
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Ludgate Circus: St. Paul's AS prospect
Why does a London smog heavy with the dark smell of diesel on a drizzly gray afternoon bring a keen sense of deja vu, o spasm of Anglophilia, to one who grew up in the Pacific Northwest of the United States? Perhaps it is the similar climate. Perhaps The City is perceived as ”achieved” rather than …
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Changing the Rules of the Game: Rule-Adjustment Mechanics in Tabletop Games
… development of several game prototypes including SMOG, an educational game focused on passing environmental regulations. The paper concludes with a discussion around the creative, strategic, and educational opportunities that rule-adjustment mechanics offer players and a set of recommendations for …
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Chemical and Physical Studies of Secondary Organic Aerosol Formed from Beta-pinene Photooxidation
… were conducted in the York University smog chamber. The main objective was to identify the gas and particle phase products with an atmospheric pressure chemical ionization mass spectrometer (APCI-MS/MS). A wide variety of products were identified containing various functional groups …
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Formation of Nitrous Acid on Urban Surfaces
… urban surfaces were further investigated in a smog chamber using a White-type DOAS multi-reflection system. The NO2 uptake coefficients on these surfaces were calculated to be gNO2 ~10-8 on Teflon, ~10-7 on PE foil, ~10-5 on asphalt and concrete, ~3 x 10-6 on roof-tiles and flagstone-tiles, and …
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