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 657 for “"ozone"”.
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Kinetic and mass transfer studies of ozone degradation of organics in liquid/gas-ozone and liquid/solid-ozone systems.
… of mass transfer and kinetic parameters of ozone reactions with four organic compounds from different families, namely reactive dye RO16, triclocarban, naphthalene and methanol. In order to understand the mechanisms of ozone reactions with the organic pollutants, a radical scavenger …
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Ozone Inactivation of Listeria Monocytogenes
… concluded that SOD is an enzyme responsible for ozone resistance. The hypersensitivity of the SOD-negative strain to ozone exposure indicates that L. monocytogenes requires SOD for survival under oxidative stress as a trigger of the detoxification process. Ozone injury and recovery studies showed …
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Inactivation of Enteroviruses by Ozone
Made available in DSpace on 2014-12-13T19:32:00Z (GMT). No. of bitstreams: 1 8009151.pdf: 4521830 bytes, checksum: aac6c6d2a555dd0150f5081cbcb31f37 (MD5) Previous issue date: 1979
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Surface Ozone and Population Health
Atmospheric ozone is attracting ever-growing research attention, as i) stratospheric ozone depletion will expose the biosphere to stronger hazardous ultraviolet radiation, which has been emphasised in the Montreal Protocol; ii) ozone as a greenhouse gas can alter the atmospheric thermodynamics; …
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Remote sensing of mesospheric ozone.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1971. Ph.D.
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Ozone Precursor Sources and Box Modeling of Ozone in Mexico City Under Altered Emission Conditions
This dissertation investigated ozone (O3) precursor sources and their impact on O3 formation in Mexico City Metropolitan Area (MCMA) under altered emission condition for March-May, 2016. Since the O3 formation regime in the MCMA has transitioned to VOC-limitation, the identification of key VOCs …
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An observational study of the austral spring statosphere : dynamics, ozone transport, and the "ozone dilution effect"
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1993.
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Pea Protein De-flavoring by Ozone
… study focuses on examining the effectiveness of ozone in diminishing the concentration of off-flavors and its influence on the structure and functionality of pea protein isolate. The research aims to provide valuable insights into addressing the challenge of unappealing taste in plant-based …
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Stratospheric ozone in the Earth system
Ozone in the stratosphere protects life on Earth by absorbing much of the ultraviolet solar radiation, as well as being a major source of ozone to the troposphere. A number of factors can influence stratospheric ozone levels and explain past, present and future changes. While there is a large …
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Catalytic oxidation of cresols using molecular ozone
Catalytic oxidation of cresols using molecular ozone. The environment, both in general and specifically our habitable segment is currently under threat from surfacing chemical pollutants that are generated mostly from pharmaceutical and industrial sectors. The extended use of cresols (meta-, …
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Stabilization dynamics of the ozone molecular system
… concentrations of heavier isotopologues of ozone known as 'ozone isotopic anomaly' in the stratosphere is a mass-independent effect (in contrast to most kinetic isotope effects familiar to chemists) that is traced back to the recombination process in the formation of ozone in the Chapman …
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Symmetry Specific Study of Ozone Isotopomer Formation
… unusual isotope effect in the formation of the ozone molecule is not yet understood, even 25 years after its discovery. Furthermore, the experimental database is still unsatisfactory, particularly with regard to application of the heavy oxygen from ozone as an atmospheric tracer. To close a gap …
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Ozone-bromide-NOM interactions in water treatment
Ozonation (O$\sb3$) of waters containing bromide (Br$\sp{-}$) results in Br$\sp{-}$ oxidation to first hypobromite ion (OBr$\sp{-}$) and its conjugate acid (HOBr), and eventually bromate (BrO$\sb{3\sp{-}}$), a suspected carcinogen. Natural organic matter (NOM) reads with HOBr/OBr$\sp{-}$ to form …
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Ozone effects on red oak root dynamics
… concerning the possible deleterious effects of ozone on forest health have been conducted on individual tree species. The common goal of these projects has been to identify mechanisms of damage by ozone, and then extrapolate research results to forests. Results from seedling studies are used to …
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Summertime ozone pollution in China: Observations and Simulations
Ground-level ozone is a secondary atmospheric pollutant that damages human and vegetation health. The chemical production of ground-level ozone involves the photochemical reactions between nitrogen oxides (NOX = NO + NO2) and volatile organic compounds (VOCs). China is experiencing high levels of …
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Optimisation of ozone generation using dielectric barrier discharge
… understanding the fundamental kinetics of ozone generation using dielectric barrier discharge and investigating the potential to optimize the process to improve ozone generation efficiency.The kinetics of ozone generation and its limitations are reviewed. The discharge characteristics of …
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Aqueous reactions of ozone with primary aromatic amines
Ozone reacts readily with primary aromatic amines (aniline, 3-methylaniline, 3-chloroaniline, 4-bromoaniline, 4-nitroaniline) in dilute aqueous solutions (10$\sp{-5}$-10$\sp{-4}$ M). The major isolated reaction products identified by GC/MS were nitrosobenzenes, nitrobenzenes, azobenzenes, …
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