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Tesi sul tema "Production engineering - Environmental aspects"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 3 febbraio 2022

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1

Pornprasitpol, Pornwan Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Selective disassembly for re-use of industrial products." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2006. http://handle.unsw.edu.au/1959.4/24274.

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As a result of rapid product development, the product life cycle has become shorter, and thus the amount of waste from discarded industrial products has risen dramatically. An awareness of the world???s environmental problems has stimulated researchers to explore the opportunities to reuse, recycle and remanufacture end-of-life products. Disassembly is a systematic approach to separating products into components or subassemblies in order to facilitate recovery of components or materials. However, the full disassembly of a product tends to be unproductive due to technical and cost constraints a

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Mazhar, Muhammad Ilyas Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Lifetime monitoring of appliances for reuse." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2006. http://handle.unsw.edu.au/1959.4/25963.

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Environmental awareness and legislative pressures have made manufacturers responsible for the take-back and end-of-life treatment of their products. Therefore, manufacturers are struggling to find ways to recover maximum value from returned products. This goal can best be achieved by promoting multiple reuse programs as reuse is one of the most effective ways to enhance a sustainable engineering economy. Since the essential goal of the reuse strategy is to reuse parts, the reliability of used parts becomes a core issue. Research indicates that reuse is technologically feasible, associated with

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3

Larwood, Andrew John. "Cleaner production : promoting and achieving it in the South Australian foundry industry." Title page, table of contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09ENV/09envl336.pdf.

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Bibliography: leaves 123-130. The literature search and the findings from the investigation have been used to provide recommendations for a sector specific cooperative approach using regulation, self-regulation, voluntary agreements, economic incentatives and educational/information strategies to promote and acheive cleaner production in the South Australian foundry industry.

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4

Bezuidenhout, Sol. "Advantages associated with the implementation and integration of environmental management systems in small manufacturing businesses." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/20902.

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Thesis (MIng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: TheSouthAfrican economy islargely dependant on small enterprisesas a valuable source of job creation, gross domestic product as well as product development and innovation, However, unfortunately there existsan extremeiy high failure rate among small businesswith 20%of startup businessesfailing within the firstyear of operation, and an almost 60% failure rate within the first6 years of existence, Thesestatisticshave initiated several research studies,and have been the focus of many businessbooks, in itseif, creating a

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5

Nolte, Mirco. "Commercial biodiesel production in South Africa : a preliminary economic feasibility study." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/369.

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6

Stewart, Alan V. "Plant breeding aspects of ryegrasses (Lolium sp.) infected with endophytic fungi." Phd thesis, University of Canterbury. Lincoln College, 1987. http://theses.lincoln.ac.nz/public/adt-NZLIU20071005.172250/.

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Some aspects of the presence of systemic endophytic fungi in agriculturally important New Zealand grasses were studied in relation to plant breeding. Seedling resistance to adult Argentine stem weevil feeding in perennial ryegrass, Italian ryegrass and tall fescue was found to be related to the presence of their respective Acremonium endophytes in the seed rather than to plant genetic resistance. In addition a study of perennial ryegrass revealed that this resistance was independent of endophyte viability. The seedling resistance conferred by the endophyte of Italian ryegrass was found to be b

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7

Weiland, Daniel Albert. "Rooftop pv impacts on fossil fuel electricity generation and co2 emissions in the pacific northwest." Thesis, Portland State University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1547603.

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<p> This thesis estimates the impacts of rooftop photovoltaic (PV) capacity on electricity generation and CO2 emissions in America's Pacific Northwest. The region's demand for electricity is increasing at the same time that it is attempting to reduce its greenhouse gas emissions. The electricity generated by rooftop PV capacity is expected to displace electricity from fossil fueled electricity generators and reduce CO2 emissions, but when and how much? And how can this region maximize and focus the impacts of additional rooftop PV capacity on CO2 emissions? To answer these questions, an ho

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8

Ashrafi, Karzan, and Ahmed Ibrahim Ali. "Testning av betongskivor för inredningsändamål." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-104763.

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Detta examensarbete syftar till att utveckla ett nytt sätt att använda betong för inredningsändamål. Betong har alltid använts i större byggnader, infrastruktur och andra kategorier. Nyligen började den moderna inredningen använda betong inomhus, till exempel som bänkskiva eller som en hylla. Arbetet fokuserar på en huvudfråga: Är betong ett bra materialval för inredning? För att besvara denna fråga bestämdes några punkter för att komma till huvudfrågan. Följande punkter behövde testat och analyserad för att komma till svaren: - Beräkna och testa betongens hållfasthet - Testa slagtålighe

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9

De, Waal Louise Christina. "Environmental aspects of river management." Thesis, University of Wolverhampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247784.

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This work consists of two distinct and separate sections with differing aims and outcomes. Section A is the critical review, which provides a context for the published work presented in Section B. Section A, the critical review, summarises the current literature in the subject area of environmental aspects of river management and sets the research portfolio in context. The physical landscape has been increasingly influenced by a variety of economic and social changes in recent history. During these approximately 6,000 years, human impact on river systems has been substantial and widespread. Th

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10

Yu, Chuan, and 余川. "Life cycle analysis of different feedstocks of biodiesel production." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49618027.

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The scarcity of fossil fuel and its environmental impact have shifted the world focus on green innovations At a time when the use of fossil fuel means increasing energy scarcity and an environmental crisis in the world in which we live, we need green innovations now more than ever. Growing attention has been drawn to the use of biofuels, such as bioethanol and biodiesel, which have gradually come to make up part of the total energy supply. Uncertainties about the environmental and ecological aspects of the production and consumption of biofuel still exist despite its rapid development. A life

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11

Revheim, Lars Petter Rein. "Energy and Environmental Aspects of an FPSO for LNG Production." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12880.

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The floating production unit HLNG FPSO-1 has been evaluated with respect to its energy consumption and emissions to air, and improvement potentials within the same context have been suggested. The thesis describes theory of combustion of natural gas, emission calculations, energy consumption of compressors and theory of fuel gas consumption for gas turbines. A literature study of LNG processes suitable for offshore applications has also been included. The CO2 emissions from the HLNG FPSO-1 add up to about 6% of the CO2 emissions from the Norwegian oil and gas industry (2005), which is a notice

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12

Kimm, Nicola Karin. "Economic and Environmental Aspects of Integration in Chemical Production Sites." [S.l. : s.n.], 2008. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000009071.

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13

Helldal, Michael, and Sofia Tenne. "Positiva miljöeffekter i kölvattnet av Lean produktion : Kan en integrering av miljöaspekter och Lean produktion bidra till att nå synergieffekter och minska risken för suboptimering?" Thesis, Linköping University, Linköping University, Department of Management and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17649.

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<p>Denna rapport är resultatet av ett examensarbete utfört vid Institutionen för industriell och ekonomisk utveckling vid Linköpings universitet på uppdrag av konsultbolaget Sustainia AB. Lean produktion, ofta benämnt Lean, har det senaste decenniet blivit en allt mer attraktiv produktionsfilosofi för att minska kostnader och öka kundnöjdhet genom förbättrad leveransservice och effektivare flöde. Ett flertal författare har påpekat att införandet av Lean direkt kan förbättra ett företags miljöprestanda, främst till följd av det minskade slöseri som Lean avser ge upphov till. Vidare finns studie

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14

Aschner, Andrew Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Planning for sustainability through cleaner production." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2004. http://handle.unsw.edu.au/1959.4/20669.

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The concept of sustainable development is receiving a great deal of attention in industry. However, the operational processes for industrial environmental management are still at an early stage of development and despite the best efforts of operations management and environmental specialists a great many products and services continue to be unsustainable. This presents threats to society and risks for survival to manufacturers. The purpose of the Thesis is to accelerate environmental improvements through the uptake of Cleaner Production concepts by developing a methodology for guiding manufact

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15

Biehl, Markus. "The value of clean manufacturing strategies for manufacturing management under the influence of environmental policy." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/30330.

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16

Coulter, Stewart. "Reducing environmental impact through systematic product evolution." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/17932.

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17

El-Hajaji, A. H. S. "Desalination technologies and environmental aspects : case study in Libya." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/8585/.

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Water, otherwise known as the pool of life, is the very essence of all living things and as such is vital for survival, whether for living beings, social, economic development or for environmental sustainability. However, its continuing existence is severely threatened for future as a result of climate change, carbon footprint, population growth, environmental damage, combined with natural disasters like droughts and floods. The prospect of an alternative solution such as desalination of sea or brackish water to counter the limit on conventional water resources such as groundwater, which canno

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18

Egeröd, Jens, and Emma Nordling. "Strategic Supplier Evaluation - Considering environmental aspects." Thesis, Linköpings universitet, Logistik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-63197.

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This study aims at presenting a strategic supplier evaluation model that can assist Cederroth in strategic supplier selection and give indications on potential areas for strategic supplier development. The evaluation model aims at assessing supplier performance also with respect to environmental aspects. The final model has been developed through five steps, five models, with starting point in a theoretical review and basic empirical data. Following the model was developed through four iterations of workshops, interviews, weighting and case studies. The final model includes 7 criteria categori

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19

Groode, Tiffany Amber 1979. "Biomass to ethanol : potential production and environmental impacts." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43144.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.<br>Includes bibliographical references.<br>This study models and assesses the current and future fossil fuel consumption and greenhouse gas impacts of ethanol produced from three feedstocks; corn grain, corn stover, and switchgrass. A life-cycle assessment approach with an integrated Monte Carlo uncertainty analysis is applied to each of these three bioethanol pathways. Incorporating a Monte Carlo uncertainty analysis within a life-cycle model enables one to account for system variability within the

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20

Upton, David P. "Some aspects of drill performance." Thesis, Aston University, 1987. http://publications.aston.ac.uk/11854/.

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High speed twist drills are probably the most common of all metal cutting tools and also the least efficient. In this study, detailed research was undertaken into aspects of drill performance and ways in which drilling could be improved in short hole depths of up to two diameters. The work included an evaluation of twist drill geometry and grinding parameters. It was established that errors in point grinding lead to increased hole oversize and reduced drill life. A fundamental analysis was made to establish predictive equations for the drill torque and thrust using modified orthogonal cutting

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21

Page, Andre Paul. "The barriers and opportunities of resource efficiency and cleaner production within a South African context." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2800.

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Thesis (MTech (Business Administration))--Cape Peninsula University of Technology, 2017.<br>This research study investigates how environmental tools such as Resource Efficiency and Cleaner Production (RECP) can contribute to sustaining and supporting economic growth in South Africa. Resource optimisation is crucial when considering the concept of sustainable development. It also contributes to addressing the challenges of global warming and climate change, which in turn threaten industrial growth and sustainability in the long term. The study places emphasis on the barriers that prevent indust

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22

Sørum, Lars. "Environmental aspects of municipal solid waste combustion." Doctoral thesis, Norwegian University of Science and Technology, Norwegian University of Science and Technology, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1488.

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23

Wilgenbusch, Brian. "Developing an information management system for an environmental and economic monitoring system." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17331.

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24

Kim, Carl Chong-Soo. "Geotechnical aspects of recirculating well design." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/44495.

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25

Mneimneh, Saadeddine S. "Algorithmic aspects of high speed switching." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8373.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.<br>Includes bibliographical references (p. 145-148).<br>A major drawback of the traditional output queuing technique is that it requires a switch speedup of N, where N is the size of the switch. This dependence on N makes the switch non-scalable at high speeds. Input queuing has been suggested instead. The introduction of input queuing creates the necessity for developing switching algorithms to decide which packets to keep waiting at the input, and which packets to forward across the swi

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26

Alverbro, Karin. "Environmental and ethical aspects of destruction of ammunition." Licentiate thesis, KTH, Miljöstrategisk analys, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-27345.

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Many decision-making situations today affect the safety of individuals and the environment,for instance hazardous waste management. In practice, many of these decisions are madewithout an overall view and with the focus on either the environment or safety. Now and then the areas of regulation are in conflict, i.e. the best alternative according to environmental considerations is not always the safest way and vice versa.A tool for taking an overall view within the areas of safety and environment would simplify matters and provide authorities and industry with a better basis for their work. This

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27

Malmqvist, Tove. "Methodological aspects of environmental assessment of buildings." Doctoral thesis, KTH, Miljöstrategisk analys, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9742.

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The built environment contributes extensively to the overall environmental impact of society. An increasing number of tools have been developed worldwide for comprehensive environmental assessment and rating of buildings in order to make the building sector more sustainable. These tools are expected to drive and facilitate future environmental improvements and market transformation in the sector. This thesis explores different methodological aspects in tool development using experiences from two large Swedish projects, the EcoEffect and ByggaBo tools, which were developed with a high level of

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28

Chan, Tak-him, and 陳德謙. "From international regulation to green production: continuous challenges to our textile and clothingindustry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B43893648.

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Chow, Kwok-on Desmond, and 周國安. "The environmental improvement due to the relocation of base load gas production plant from Ma Tau Kok to Tai Po industrial estate." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B4257433X.

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30

Loria, Mark Henry II. "Microalgal-Bacterial Consortia for Biofuel Production and Wastewater Treatment." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1510234025755737.

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31

Flanagan, Mark Steven. "Environmental and agronomic aspects of municipal solid waste heavy fraction used for turfgrass production." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134805/.

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32

Pandit, Shalmalee(Shalmalee Dhananjay). "Environmental remediation and biofuel production through nanoparticle stimulation of yeast." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/128313.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Biological Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 43-47).<br>Artificially photosynthetic systems aim to store solar energy and chemically reduce carbon dioxide. These systems have been developed in order to use light to drive processes for carbon fixation into biomass and/or liquid fuels. We have developed a hybrid-biological system that manages both genetically controlled generation of products along with the photoactivability of a semiconductor system. We show

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33

Kurta, Mykola. "Environmental and Energy Saving Technologies of Vinyl Chloride Production." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4352.

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Recently, because of the increase of environmental concerns in process design, the need to enhance conversion to product and prevent generation of wasteful byproducts in the reactor network has become urgent. This prevents high cost treatment and separation costs downstream in the process. Therefore, in this thesis I focus on making production of vinyl chloride monomer (VCM) more efficient and on possible ways of industrial organochlorine waste (OCW) recycling. In particular, in the first experiment, we investigate how catalyst and its structure can affect product output. Infrared spectroscopy

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34

Butler, Keith J. "The design of environmental test rigs." Thesis, Aston University, 1986. http://publications.aston.ac.uk/11929/.

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Product reliability and its environmental performance have become critical elements within a product's specification and design. To obtain a high level of confidence in the reliability of the design it is customary to test the design under realistic conditions in a laboratory. The objective of the work is to examine the feasibility of designing mechanical test rigs which exhibit prescribed dynamical characteristics. The design is then attached to the rig and excitation is applied to the rig, which then transmits representative vibration levels into the product. The philosophical considerations

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35

Ellis, Ciaran R. "Valuing wild pollinators for sustainable crop production." Thesis, University of Stirling, 2014. http://hdl.handle.net/1893/22327.

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This thesis looks at the role of wild pollinators in providing services to crops. Two data chapters (2 and 3) are accompanied by a modelling chapter (4) which build on the findings of the field studies. The thesis ends with an overview of the trends in pollinator populations and how these relate to the needs of farmers in the UK (chap-ter 5). It is often assumed that commercial pollinators are appropriate substitutes of wild pollinators on farms; however this view neglects the differing roles that particular pollinator taxa might play in providing pollination services. For example, crops with

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36

Ritzén, Sofia. "Integration environmental aspects into product development : proactive measures." Doctoral thesis, KTH, Maskinkonstruktion, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2936.

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Environmental concern has greatly increased in magnitude within the companies of Swedish industry. Product development has become a strategic area: the environmental adaptation of products is fundamental for a decrease in environmental impact from human activities, and product development is an area of the greatest importance to the competitiveness of companies. Integrating environmental aspects into product development at operations level is needed to achieve product improvements. The theme of this thesis is how to integrate environmental aspects into product development. An overarching purpo

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Muller, Johannes Christoffel. "Comparative financial and environmental life cycle assessment of three South African pork production chains." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96815.

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Thesis (MScAgric)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The world demand for animal proteins and profit-driven production has led to producing animal proteins intensively. Intensive pork production systems have traditionally had a poor image with the public, because these production systems are associated with environmental pollution. Currently, pigs are produced on highly specialised farms, and are fed concentrated (often imported) pig feed. The resulting higher production and higher animal densities contribute to an increased pollution of water, soil and air. The aim of t

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38

Hassan, Djihan. "Environmental sustainability assessment & associated experimental investigations of magnesia production routes." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648574.

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Scannell, Luke Weber. "An analysis of performance criteria of porous ceramic water filter production methods." Thesis, State University of New York at Buffalo, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10163904.

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<p> The World Health Organization estimated in 2013 that 768 million people lack access to improved drinking water sources. Ceramic water filters have grown in popularity over the past several decades as a point-of-use treatment option to improve water quality. Water treatment reduces the health risks from disease from microbial pollution and potentially other causes. To improve filter design, a more thorough analysis is needed of the effects of the clay and organic materials used to make ceramic water filters. The research presented in this dissertation investigates the effect of four variabl

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Anestis, Ioannis D. "Preference avoidance reactions of rainbow trout (Salmo gairdneri) following long term sublethal exposure to chromium and copper." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75767.

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A standard methodology was developed for performing avoidance-preference tests, using Rainbow Trout (Salmo gairdneri) as the test organism. Experiments were conducted in a hydraulic channel, 9.15 m long by 0.30 m wide, partly divided along its length, and at a flow depth of 0.30 m. The design combined steep and shallow gradient characteristics. The toxicants investigated included Cu(II), Cr(III) and Cr(VI). The lowest avoidance threshold values were established at 2.1 $ mu$g/l for Cu(II) and 0.0026 mg/l and 0.026 mg/l for Cr(III) and Cr(VI) respectively while avoidance reactions increased with

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41

Hanifzadeh, MohammadMatin. "Approaches for Sustainable Production of Microalgae with High Productivity and Flexible Composition." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1521591139408701.

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Wang, Bei. "Microalgal Lipids Production and NitrogenPhosphorus Removal Using the Green Alga Neochloris oleoabundans." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28571.

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A Neochloris oleoabundans strain screened in our lab was demonstrated to have the ability to accumulate large quantities of triglycerides, the feedstock of biodiesel production, and to remove nitrogen and phosphorus from wastewater efficiently. Box-Behnken experimental design (BBD) and response surface method (RSM) were used to study the effects of a large number of nutrients on cell growth and lipid accumulation. The optimized medium supported a lipid concentration of 641.4 mg/l and a cell density of 2.54 g/l, which were 4.5-fold and 2.2-fold of that obtained with the basic medium, modified B

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Elvin, Alex A. (Alex Allan). "Several aspects of polycrystalline ice behavior based on micromechanical modeling." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/42575.

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Hoisungwan, Piyatida. "China's food production under water and land limitations." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60791.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 175-178).<br>The future availability of the natural resources (water and land) needed for food production is highly uncertain. Evidence shows diminishing natural resources and growing food demand throughout many parts of the world. China is one of the countries that face the challenge of managing its finite water and land resources to support their population. Difficulties mainly arise from: (1) the geogr

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Yazdianpour, Hamid. "Some aspects of system design for production management in the rolling-mill industry." Thesis, Aston University, 1989. http://publications.aston.ac.uk/11916/.

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Case studies in copper-alloy rolling mill companies showed that existing planning systems suffer from numerous shortcomings. Where computerised systems are in use, these tend to simply emulate older manual systems and still rely heavily on modification by experienced planners on the shopfloor. As the size and number of orders increase, the task of process planners, while seeking to optimise the manufacturing objectives and keep within the production constraints, becomes extremely complicated because of the number of options for mixing or splitting the orders into batches. This thesis develops

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46

Barekat, Matthew M. "Aspects of the design and operation of production control systems in manufacturing industry." Thesis, Aston University, 1989. http://publications.aston.ac.uk/11921/.

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Computerised production control developments have concentrated on Manufacturing Resources Planning (MRP II) systems. The literature suggests however, that despite the massive investment in hardware, software and management education, successful implementation of such systems in manufacturing industries has proved difficult. This thesis reviews the development of production planning and control systems, in particular, investigates the causes of failures in implementing MRP/MRP II systems in industrial environments and argues that the centralised and top-down planning structure, as well as the r

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47

Neill, Holly Ann. "The Production of Organic Nitrates in Portland Oregon and the Columbia River Gorge." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/681.

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This work studied the production of aerosol-phase organic nitrates in both Portland and the Columbia River Gorge (CRG). Ozone and NOx species were investigated for correlation with organic nitrate aerosol, as they function as precursors to the production of organic nitrates. These ambient gas-phase measurements were collected in the same locations as high-volume (Hi-Vol) filters samples, in an urban and rural gorge setting to investigate correlations at the origin of the pollution plume and downwind. A novel Soxhlet extraction method for Hi-Vol filters was developed based on literature and EPA

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Smith, Kiara L. "Anaerobic Degradation of Polycyclic Aromatic Hydrocarbons at a Creosote-Contaminated Superfund Site and the Significance of Increased Methane Production in an Organophilic Clay Sediment Cap." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/101.

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The overall goal of this work was to investigate microbial activity leading to the anaerobic degradation of polycyclic aromatic hydrocarbons and an organophilic clay sediment cap used at a creosote-contaminated Superfund site. To determine whether or not PAHs were being degraded under anaerobic conditions in situ, groundwater and sediment porewater samples were analyzed for metabolic biomarkers, or metabolites, formed in the anaerobic degradation of naphthalene (a low-molecular weight PAH). In addition, a groundwater push-pull method was developed to evaluate whether the transformation of deut

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Sanson, Joseph. "Hemicellulose and Cellulose Hydrolysis for Butanol Fuel Production." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1371218027.

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Invally, Krutika Ravi. "Process optimization for rhamnolipids production and their environmental impacts." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1541755267451868.

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