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 50 for “"diesel exhaust"”.
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Inhalation exposure system for diesel exhaust particulates
… Chamber was modified to minimize the amount of diesel exhaust particulate (DEP) needed for animal inhalation exposures. Second, instrumentation was evaluated for aerosolizing DEP, monitoring the mass concentration and size distribution, and determining the uniformity of the aerosol.;The …
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The Origin of Polycyclic Aromatic Hydrocarbons in Diesel Exhaust Emissions
Emission limits for diesel engine exhaust pollutants are being continually reduced in line with increasingly stringent emissions legislation. Essential to the task of reducing diesel exhaust emissions is an understanding of the origin of the exhaust pollutants. This research has investigated the …
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Design strategy for and implementation of electrostatic control of diesel exhaust
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.
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System modeling, analysis, and optimization methodology for diesel exhaust after-treatment technologies
… technologies to meet emission regulations for diesel engines is a growing problem for many automotive companies and suppliers. Balancing manufacturing cost, meeting emission performance, developing competitive engine power, reducing weight and operational costs are all tradeoffs that companies …
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A fogging scrubber to treat diesel exhaust: field testing and a mechanistic model
Diesel particulate matter (DPM) is comprised of two main fractions, organic carbon (OC) and elemental carbon (EC). DPM is the solid portion of diesel exhaust and particles are submicron in size typically ranging from 10 to 1000 nanometers. DPM is a known respirable hazard and occupational exposure …
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Modulation of thiols and pulmonary immune responses due to diesel exhaust particle (DEP) exposure
Environmental exposure to diesel exhaust particles (DEP) has been of concern because of its potential contribution to the increased prevalence of acute and chronic airway diseases. The objective of this study was to investigate the role of thiol changes (due to DEP exposure) in immune responses. …
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Gas chromatographic determination of carbon dioxide, carbon monoxide, and nitric oxide in diesel exhaust
… dioxide, carbon monoxide, and nitric oxide in diesel exhaust was developed. A gas chromatograph containing a liquid phase column in series with a molecular sieve column, each of which eluted into thermal conductivity detectors, was utilized. Activation of the molecular sieve column was achieved …
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Biomonitoring of exposure to diesel exhaust. Development and application of techniques, using 1-nitropyrene as a marker.
Contains fulltext : 145653.pdf (Publisher’s version ) (Open Access)
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Lubricant oil consumption effects on diesel exhaust ash emissions using a sulfur dioxide trace technique and thermogravimetry
… targeting lubricant consumption effects on ,diesel exhaust ash levels using a model year 2002 5.9L diesel engine, high and low Sulfur commercial lubricants, and clean diesel fuels. Regulatory decreases in allowable particulate matter emissions for on road diesel engines are driving industry …
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The effect of hypoxia on the cytotoxicity of diesel exhaust particles and a novel oxygenating therapeutic in four cell lines.
… as Ox66™. Another major human health concern is diesel exhaust particles (DEP), a prominent component of air pollution. This study evaluates the toxicity of DEP, Ox66™, and a mixture of both during both hypoxia and normoxia and in 24- and 48-hour exposures using four cell lines. The effect of …
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The Fate of Naphthalene and n-Alkylnaphthalenes During Combustion, and an Evaluation of the Sources of these Compounds in Diesel Exhaust Emissions
… of naphthalene and n-alkylnaphthalenes during diesel combustion, and an evaluation of their sources in diesel exhaust emissions. This was achieved by the use of a procedure which employed a [14C]radiolabelled PAH technique and a diesel enriched fuel technique (DEFT). The combustion of diesel …
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The Association Between Childhood Traffic Exhaust Exposure and Asthma Differs Between Normal and Overweight Children
Objective: Examine the association between diesel exhaust particles and asthma development in normal and overweight children at age seven.Study Design: Newborn children (n = 592) were monitored for exposure to diesel exhaust particles from birth to age seven. Clinical examinations were performed at …
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HC-SCR of NO\(_x\) emissions over Ag-AL\(_2\)O\(_3\) catalysts using diesel fuel as a reductant
… (Ag-Al\(_2\)O\(_3\)) catalysts, in diesel exhaust gas, has been investigated and presented in this research thesis. The work involved the use of H\(_2\) to activate diesel-type HC reductants. Numerous HC-SCR studies have been conducted (to date) by various authors and research groups …
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Effects of combustion derived air pollution on vascular and fibrinolytic function in man
… In Europe, the contribution to urban PM from diesel emissions is increasing with the popularity of diesel engines for road transport. Despite the strength of the epidemiological evidence and the emergence of promising hypotheses, the important constituents and biological mechanisms responsible …
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Exploring the Mechanistic Landscape of Nitric Oxide Oxidation and Ammonia Selective Catalytic Reduction of Nitric Oxide on Cu-Zeolites via Kinetic and Spectroscopic Characterization
… reduce emissions of nitrogen oxides (NOx) from exhausts of heavy-duty diesel engines has set the stage to delve into a detailed investigation of engine after-treatment catalysts in order to understand the chemistry during their operation and design the next generation of catalytic formulations …
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The Control of Diesel Particulates in Underground Coal Mines
… which focused at reducing employee exposure to diesel particulate in underground coal mines. The four aims were to: a) Develop a method to test disposable diesel exhaust filters and if possible improve their performance b) Investigate the relationship between maintenance and diesel particulate …
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Shaping the terms of competition : environmental regulation and corporate strategies to reduce diesel vehicle emissions
… regulatory strategies are pursued in the diesel vehicle and fuel industry. Growing public concern about the health effects of diesel exhaust has led countries to implement several cycles of increasingly stringent emission and fuel regulations over the past two decades.
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Catalytic reduction of nitric oxide by solid carbonaceous material under lean condition
The reactions of O_2, NO_x and soot from Diesel exhaust over Cu containing catalysts can significantly reduce soot and NO_x emissions while producing N_2 and CO_2. The author has evaluated the performance of Cu ion exchanged ZSM-5 and Cu adsorbed on Granulated Activated Carbon (Cu-GAC) using GAC as …
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A Laboratory Investigation of Abatement of Airborne Diesel Particulate Matter Using Water Droplets
The term diesel particulate matter (DPM) is used to refer to the solid phase of diesel exhaust, which is mainly composed of elemental carbon and organic carbon. DPM is generally in the nano-size range (i.e., 10-1,000 nm). Occupational exposure is a health concern, with effects ranging from minor …
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