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Letteratura scientifica selezionata sul tema "Production engineering - Environmental aspects"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 3 febbraio 2022

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Articoli di riviste sul tema "Production engineering - Environmental aspects"

Hoffmann, Józef, Krystyna Hoffmann, Magdalena Borowiec e Marta Huculak. "Environmental aspects of feed phosphates production". Polish Journal of Chemical Technology 11, n. 1 (1 gennaio 2009): 16–19. http://dx.doi.org/10.2478/v10026-009-0005-2.

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Environmental aspects of feed phosphates production The risks resulting from the selected feed phosphates application in animal nutrition were analyzed. The results of the analyses of the fodder phosphates obtained in laboratory conditions were presented, including the toxic and disadvantageous substances with regard to their impact upon the environment.

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Paunović, Perica. "Electrometallurgy: electrochemical, economic and environmental (3E) aspects". Macedonian Journal of Chemistry and Chemical Engineering 30, n. 1 (15 giugno 2011): 75. http://dx.doi.org/10.20450/mjcce.2011.72.

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This paper is concerned with electrolysis processes aimed for production and refining of metals. This engineering field is named electrometallurgy. The main aspects of electrometallurgy such as electrochemical, energetic/economic and environmental ones are given. The peculiarity of electrorefining and electrowining in both aqueous electrolytes and molten salts are shown. The impact of energetic parameters, such as cell voltage and current efficiency on the economic justification of the electrolysis process is analyzed. It is emphasized that electrolysis is considerably cleaner technology than the pyrometallurgical production and refining of metals.

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Dobson, Andrew. "Genetic Engineering and Environmental Ethics". Cambridge Quarterly of Healthcare Ethics 6, n. 2 (1997): 205–21. http://dx.doi.org/10.1017/s0963180100007817.

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When God gave humankind dominion over the earth he may not have known exactly what we would be able to do with it. The technical capacities to which the production and reproduction of our everyday life have given rise have grown at an astonishing and, it seems, ever-increasing rate. The instruments that we use to do work on the world have become sharper and more refined, and the implications of human interventions in the nonhuman environment are much more far-reaching than could have been imagined even forty years ago. It has become something of a cliche to say that our technical abilities have outstripped the wisdom to know when, where, and how we should appropriately use them, but techniques such as genetic engineering invite the dusting-off of the cliche and the asking of the question implicit in it: We know we can splice genes, but should we splice them? We might of course come to the conclusion that we should only splice some of them some of the time, but even arriving at that conclusion presupposes that the ethical question has been asked and answered.

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Ozola, Zanda U., Rudite Vesere, Silvija N. Kalnins e Dagnija Blumberga. "Paper Waste Recycling. Circular Economy Aspects". Environmental and Climate Technologies 23, n. 3 (1 dicembre 2019): 260–73. http://dx.doi.org/10.2478/rtuect-2019-0094.

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Abstract Paper waste is a raw material for a lot of products with different added value. The engineering, economic and environmental aspects of paper waste recycling are analysed for production of composite material, cellulose nanofibers and nanocrystals, bricks with paper components, porous carbon, film of biopolymer, enzymatic sugar and bioenergy: bioethanol, hydrogen and biofuel. Through multicriteria analysis, it was possible to determine the most feasible paper waste recycling product in case of four product groups: egg packaging boxes, cardboard, reused paper, cellulose nanomaterials (nanofibers and nanocrystals). The production of cellulose nanofibres and cellulose nanocrystals has an advantage over egg packaging and cardboard production as well as reusable paper.

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Martins, Roberta Guimarães, Igor Severo Gonçalves, Michele Greque de Morais e Jorge Alberto Vieira Costa. "Bioprocess Engineering Aspects of Biopolymer Production by the CyanobacteriumSpirulinaStrain LEB 18". International Journal of Polymer Science 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/895237.

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Microbial biopolymers can replace environmentally damaging plastics derived from petrochemicals. We investigated biopolymer synthesis by the cyanobacteriumSpirulinastrain LEB 18. Autotrophic culture used unmodified Zarrouk medium or modified Zarrouk medium in which the NaNO3content was reduced to 0.25 g L−1and the NaHCO3content reduced to 8.4 g L−1or increased to 25.2 g L−1. Heterotrophic culture used modified Zarrouk medium containing 0.25 g L−1NaNO3with the NaHCO3replaced by 0.2 g L−1, 0.4 g L−1, or 0.6 g L−1of glucose (C6H12O6) or sodium acetate (CH3COONa). Mixotrophic culture used modified Zarrouk medium containing 0.25 g L−1NaNO3plus 16.8 g L−1NaHCO3with the addition of 0.2 g L−1, 0.4 g L−1, or 0.6 g L−1of glucose or sodium acetate. The highest biopolymer yield was 44% when LEB 18 was growing autotrophically in media containing 0.25 g L−1NaNO3and 8.4 g L−1NaHCO3.

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Zueva, Svetlana, Andrey A. Kovalev, Yury V. Litti, Nicolò M. Ippolito, Valentina Innocenzi e Ida De Michelis. "Environmental and Economic Aspects of Biomethane Production from Organic Waste in Russia". Energies 14, n. 17 (24 agosto 2021): 5244. http://dx.doi.org/10.3390/en14175244.

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According to the International Energy Agency (IEA), only a tiny fraction of the full potential of energy from biomass is currently exploited in the world. Biogas is a good source of energy and heat, and a clean fuel. Converting it to biomethane creates a product that combines all the benefits of natural gas with zero greenhouse gas emissions. This is important given that the methane contained in biogas is a more potent greenhouse gas than carbon dioxide (CO2). The total amount of CO2 emission avoided due to the installation of biogas plants is around 3380 ton/year, as 1 m3 of biogas corresponds to 0.70 kg of CO2 saved. In Russia, despite the huge potential, the development of bioenergy is rather on the periphery, due to the abundance of cheap hydrocarbons and the lack of government support. Based on the data from an agro-industrial plant located in Central Russia, the authors of the article demonstrate that biogas technologies could be successfully used in Russia, provided that the Russian Government adopted Western-type measures of financial incentives.

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Da Silva, L. M., L. A. De Faria e J. F. C. Boodts. "Green processes for environmental application. Electrochemical ozone production". Pure and Applied Chemistry 73, n. 12 (1 gennaio 2001): 1871–84. http://dx.doi.org/10.1351/pac200173121871.

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Several aspects of electrochemical ozone production (EOP) on b-PbO2 were investigated. The morphology of the electrode material was determined in situ using extensive (total, external, and internal differential capacity) and intensive parameters (the morphology factor, j) permitting comparison with results of other laboratories if appropriate electrode characterization parameters are available. The influence of the nature of the supporting electrolyte on the oxygen evolution reaction (OER)/EOP processes was investigated using polarization curves, recorded under quasi-stationary conditions, point-by-point polarization, and chronopotentiometry. The performance of the several b-PbO2/electrolyte system was evaluated using the apparent specific power criterion. A detailed mechanism for EOP is proposed.

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Ghose, Agneta, e Gary Chinga-Carrasco. "Environmental aspects of Norwegian production of pulp fibres and printing paper". Journal of Cleaner Production 57 (ottobre 2013): 293–301. http://dx.doi.org/10.1016/j.jclepro.2013.06.019.

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Pritts, Marvin P. "USE OF ENVIRONMENTAL MANIPULATIONS IN SMALL FRUIT PRODUCTION". HortScience 25, n. 9 (settembre 1990): 1178e—1178. http://dx.doi.org/10.21273/hortsci.25.9.1178e.

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Manipulating light, temperature, moisture, and nutrients to favor plant growth and productivity is an important component of horticulture. The technology required to achieve such manipulation ranges from inexpensive, basic practices to elaborate, costly approaches involving the latest engineering advances. For example, pruning and mulching are relatively low-tech methods for improving light interception and soil moisture status in small fruit plantings. At the opposite extreme are glass houses with supplemental lighting, CO2 enrichment, and nutrient film hydroponic systems Of greatest value to small fruit growers, however, is technology that ran be applied in field situations, such as the use of overhead irrigation for maintaining soil moisture status, frost protection, and evaporative cooling. One of the greatest challenges to small fruit growers and rcsearchers is integrating new technology into production systems. The introduction of a new technique for environmental modification usually has indirect effects on other aspects of management, which may require additional technology to compensate for adverse changes while maintaining the favorable change. In addition, unique macro- and microclimates demand and market opportunities, specific solutions, and the result is a dynamic, diverse collage of production systems used by growers throughout the world.

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Vijatov, Tatjana, Gordana Dražić e Filip Jovanović. "Environmental aspects of biological wastewater treatment by different methods and microorganisms". Sustainable Forestry: Collection, n. 81-82 (2020): 133–47. http://dx.doi.org/10.5937/sustfor2081133v.

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The biological treatment of wastewaters (municipal and industrial) is an important topic in the field of biochemistry and biotechnology, as well as in the field of environmental engineering. It has many advantages, such as the simple operation of the basic bioreactor, the potential for the production of valuable bioproducts and efficient wastewater treatment in a short time. However, the biological wastewater treatment also has certain downsides, such as air pollution in places which are near bio-lagoons, and endangering the health of personnel involved in this process. By studying and analyzing data from the reference literature, this paper provides a comprehensive overview of information on microorganisms involved in the wastewater treatment process, the factors with a negative effect on their development, as well as the negative effects of these microorganisms and the biological wastewater treatment process on the environment.

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Più fonti

Tesi sul tema "Production engineering - Environmental aspects"

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 and product conditions after usage. Therefore, selective disassembly has been introduced as a more practical approach, where only a limited number of disassembly paths that lead to selected parts with recovering potential are considered. This research focuses on the development of a selective disassembly methodology by reversing an assembly sequencing approach. The methodology uses a step-by-step approach to generate a disassembly sequence diagram. This involves listing all the parts within the product, generating a liaison diagram to illustrate part relationships and then establishing precedence rules describing prerequisite actions for each liaison. This is followed by segregating disassembly paths that lead to the removal of selected parts or subassemblies. Then a winnowing process is applied to these paths to eliminate invalid disassembly states and transitions. The last step is to select the optimal disassembly path by using the time requirement as the main selection criterion. In order to shorten the time for carrying out the sequencing process, a javabased program that is capable of performing the first three steps has been created. The program requires three basic inputs in forms of precedence rules, and user-required part (s) and disassembly rules, prescribing which liaison (s) should be done subsequent to a particular liaison. The viability of the methodology and the program is proved through seven case studies conducted on a fishing reel, a single-hole punch, a kettle, an entire washing machine and three washing machine subassemblies. The application of the program allows the users to determine an optimal disassembly sequence in a very short time and with only basic product information as the input.

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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 a significant manufacturing cost saving, and it does not compromise product quality. However, it is not easy to be applied in reality. There are several uncertainties associated with reuse, the most common is the uncertainty of the product???s quality after use. A widespread implementation of the reuse strategy could be triggered, subject to the availability of reliable methods to assess the useful remaining life of parts. The evolution of such a methodology would play a pivotal role in making decisions on the supply chain process and the recovery value of returned products. Reliability assessment by life cycle data analysis is the basis of this research. The proposed methodology addresses the problem of reliability assessment of used parts by considering two important aspects. It performs statistical as well as condition monitoring data analysis for decision-making on reuse. The analysis is carried out in two stages. Firstly, a wellknown reliability assessment procedure, the Weibull analysis, is applied to analyse time-tofailure data to assess the overall reuse potential of components. In the second stage, the used capacity (actual life) of components is determined by analysing their operating history (condition monitoring data). The linear and nonlinear regression analysis, Kriging procedures and artificial neural networks (ANN) are employed in this stage. Finally, the Weibull analysis and ANNs are integrated to estimate the remaining useful life of components/assemblies of a product at the end of its first life cycle. The model was validated by using life cycle data from consumer products.

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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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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.
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 vast industry of small businesssuccesstools and quick fix solutions, When considering the high failure rates of small businesses,the concepts surrounding sustainable development come into question by pure method of association, Sustainable development issueshave become a top priority globally and have moved up the corporate agenda in recent years. When trying to "marry" these two concepts, questions arise regarding the effect of integrating sustainability principles and management systems,with contemporary small businessstrategy. Theaim of thisstudy isto investigate existingcritical successmodels and to integrate some simple initial stages of sustainable development business strategy within these models. Expectantly, some of the principles contained in the formalisation of management systems that address sustainability issues,could be incorporated in traditional management models in an attempt to identify possible interventions and tools that might positivelyimpact on the successrate of small businessenterprises. These concepts would be tested by means of implementing a formal environmental management system (based on the ISO 14001standard) as an initial approach to addressingsustainabilitygoals, as a case study, The successful implementation of an ISO 14001 environmental management system at this small businessenterprise, realised several advantages for the company, and have been used to adapt traditional management models to include for some of the simple concepts of sustainable development.
AFRIKAANSE OPSOMMING: Die Suid Afrikaanse ekonomie is in 'n groot mate afhanklik van klein besighede as 'n waardevolle bron van werkskepping, bruto binnelandse produk, asook van produk ontwikkeling en innovasie, Des nieteenstaande, bestaan daar ongelukkig 'n baie hoe faling syfer onder klein besighede, met 20%van aanvangsbesighede wat mislukbinne die eerste jaar van bedryf en ongeveer 60%van besighede wat mislukbinne die eerste 6jaar van bestaan. Hierdie statistieke het reeds verskeie navorsingstudiesgeinisieer en was reeds die tema van verskeie boeke, wat opsig self 'n reuse industrie genereer van sake sukseshandleidings en kits oplossings vir verskeie probleme, Wanneer hierdie hoe falings statistieke onder klein sake ondernemings oorweeg word, bevraagteken mens die konsepte rakende volhoubare ontwikkeiing, bloot as gevolg van assosiasie,Volhoubare ontwikkeling het in die laaste paar jaar baie aandag geniet op die prioriteitsagendas internationaal, asook van verskeie korporatiewe agendas. As gepoog word om hierdie twee konsepte met mekaar te vereenselwig, ontwikkel daar verskeievrae rakende die effek van die integrering van volhoubare ontwikkelingsbeginselsen verwante bestuurstelsels,met bestaande kiein sake onderneming strategie, Die doel van hierdie studie isom bestaande suksesmodelIe vir klein sake ondernemings te ondersoek, en om sommige van die begin fase beginselsvan volhoubare besigheids strategie, met mekaar te integreer. Daar sou verwag kon word dot sommige van .die konsepte bevat in die formaiisering van bestuurstelselsrakende volhoubare ontwikkeling, ook geinkorporeer kan word binne bestaande traditionele bestuursmodelle, in 'n poging om moontlike ingrypings en gereedskap te identifiseer wat 'n positiewe impak kan he op die suksessyfersvan kleinsake ondernemings. Hierdie konsepte is getoets aan die hand van 'n implimentering van 'n formele omgewingsbestuurstelsel(gebasseer op die ISO14001standaard) as 'ngevalle studie, wat die begin benadering vorm om die doelwitte van volhoubaarheid aan te spreek. Die suksesvolleimplimentering van 'n ISO 14001omgewingsbestuurselsel by 'n klein sake onderneming het verskeie voordele vir hierdie maatskappy tot gevolg gehad. en is gebruik om tradisionele suksesmodelleaan te pas, om voorsiening te maak vir sommige van die konsepte rakende volhoubare ontwikkeling.

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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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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 beneficial for field establishment. This endophyte differs from that in perennial ryegrass and tall fescue in that it does not confer resistance to Argentine stem weevil on mature plants, but only on seedlings. The extent of plant genetic seedling tolerance to adult Argentine stem weevil feeding was limited to broad inter-specific differences, with tall fescue more tolerant than perennial ryegrass and both of these more tolerant than Italian ryegrass. This ranking corresponds with previous observations on feeding preference on mature plants. A study of factors affecting the concentration of endophyte mycelia in infected seed of perennial ryegrass revealed that plant genetic factors had little effect. The major factors studied were: 1) the endophyte concentration in the maternal parent plant directly influenced the endophyte concentration in the seed. 2) nitrogen fertilizer applications to a seed crop reduced the concentration of mycelia in the seed, with earlier applications having a greater effect. 3) application of the fungicide propiconazole (Tilt) to a seed crop reduced the endophyte concentration in the seed. 4) the endophyte concentration in the seed was found to directly influence the endophyte concentration in seedlings, six month old plants and that of seed harvested from a first year seed crop. As there have been no previous reports of tetraploid perennial ryegrass cultivars with endophyte an experiment was conducted to determine if these could be developed by the standard procedure of colchicine treatment. The results revealed that endophyte was retained following colchicine treatment.

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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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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 hourly urban rooftop PV generation profile for 2009 was created from estimates of regional rooftop PV capacity and solar resource data. That profile was compared with the region's hourly fossil fuel generation profile for 2009 to determine how much urban rooftop PV generation reduced annual fossil fuel electricity generation and CO2 emissions. Those reductions were then projected for a range of additional multiples of rooftop PV capacity. The conclusions indicate that additional rooftop PV capacity in the region primarily displaces electricity from natural gas generators, and shows that the timing of rooftop PV generation corresponds with the use of fossil fuel generators. Each additional Wp/ capita of rooftop PV capacity reduces CO2 emissions by 9,600 to 7,300 tons/ year. The final discussion proposes some methods to maximize and focus rooftop PV impacts on CO2 emissions, and also suggests some questions for further research.

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Ashrafi, Karzan, e 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 slagtålighet - Analysera hur betong reagerar med kemikalier med olika pH-värde - Förhållandet mellan miljö och betong - Studera produktionen av betong Laborationstest, litteraturskällor och fältstudier användes som metoder för att få ett resultat av ovan nämnda punkter. Resultaten visar att betong kan användas som inredningsändamål och kan användas i större utsträckning än vad som är fallet idag. Sammanfattningsvis är betong ett bra material som används för inredningsändamål och den framtida tekniken kommer att minska koldioxidutsläppen som följer med produktionen av betongen. Det kommer att göra betong ännu bättre som material att använda i framtiden.
The following thesis aims to develop a new way to use concrete as interior material. Concrete has always been used in larger scale buildings, infrastructure and in other categories. Recently the modern interior design started to use concrete indoors for example as countertop or as a shelf. This thesis focuses on one main question: is concrete a good material choice for interior use. To answer that question, we decided to have sub questions to help to get to the main question. The following questions needed test and analysis methods to get to the answers: - Calculate and test the strength of concrete - Test impact resistance - Analyze how concrete reacts with chemicals with different PH-values - Study the production of concrete - Relation between environment and concrete Lab tests, literature sources, and field studies was used as methods to answer those questions. The results shows that concrete can be utilized as interior material and can be used to a greater extent than is the case today. In conclusion concrete is a good material as used for interior purposes and the future technology will decrease carbon dioxide emissions that comes with production of the concrete. That will make concrete even better as material to use in the future.

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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. The environmental changes, that have stressed river systems, have also damaged their value for both human use and environmental functions. Some of these stresses include changes in water quality and quantity, morphological modifications of the channel and/or floodplain, decline of native species and the introduction of alien species. This has led to changes in current river management philosophy, issues and techniques. Section n, the research portfolio of published work submitted as part of this thesis, focuses on the management of some aspects of environmental change within river systems, particularly problems relating to river rehabilitation and the introduction of invasive riparian plant species. Each published paper has its own individual abstract, summarising the key finding of the research. The research portfolio can be divided into three broad sections. The first section, the main published work, includes those papers approved by the University Research Committee as part of the Registration for the degree of PhD by Published Work in May 2000. These papers form the key part of the thesis. They are introduced in the critical review in the blue text boxes, in order of significance to the text discussed and not in chronological order. They are presented in full in the appendices (numbers as shown below) printed on light blue paper. The next section relates to additional relevant published work. These papers are also submitted as part of this thesis, but are considered to be secondary as a result of their date of publication, i.e. prior to 1995. In order to distinguish these papers clearly from the key papers, they are introduced in the critical review in green text boxes and presented in full in the appendices (numbers as shown below), printed on light green paper. The candidate's approximate contribution and the nature of this contribution to each joint paper have been indicated as a percentage and are shown on the title page of each appendix. The third part is other supporting material and is referred to in the critical review through inclusion of orange-brown text boxes. Since these publications consist mainly of consultancy reports and edited books, they are NOT submitted as part of this thesis and are not presented in full in the appendices. If necessary, this material can be made available to the internal and/or external examiners before or during the viva.

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Yu, Chuan, e 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 cycle analysis (LCA) evaluates the two principal functional parameters 1) energy efficiency and 2) Greenhouse Gas (GHG) balance of different feedstocks for biodiesel production from the cradle to the grave. By accounting a life cycle analysis stage by stage, we can ascertain the change in GHG emissions and energy demand that result from the various uses of feedstocks for the production of biodiesel. In this thesis, various life cycle analysis models are reviewed and evaluated with emphasis on specific biofuels. Different LCA models depend on different LCA calculation under different situations, including GREET, LEM, SimaPro, etc. The software SimaPro was used to compare the life cycle GHG emissions and energy demand from conventional petroleum fuels and several hydro-processed renewable green diesels. A consistent methodology was used for selected fuel pathways to facilitate relatively equitable comparisons. The building of life cycle flow tree in SimaPro combined the input and output with an emphasis on the following stages 1) raw material farming and acquisition, 2)liquid fuel production, 3)transport, 4)refueling, 5)liquid fuel conversion to biodiesel and 6) end uses. Consistent impact assessment methods were chosen for simulation, equitable comparisons and comprehensive analysis of selected fuel pathways for the calculation of Global Warming Potential (GWP) and Cumulative Energy Demand (CED). However, the results of the entire lifetime estimates vary dramatically in production chains, which make it difficult to take a holistic view about energy intake and yields, economic costs and values, environmental impacts and their benefits. Apart from the diversity in system boundaries and life cycle inventories, a variance in terminologies and the limitations of interdisciplinary communication are the main factors that affect the quality of the results.
published_or_final_version
Mechanical Engineering
Master
Master of Philosophy

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Libri sul tema "Production engineering - Environmental aspects"

Dodd, Vincent A. Intensive animal production and environmental engineering. (Dublin): (Department of Geography, University College Dublin), 1994.

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Environmentally-friendly production of pulp and paper. Hoboken, N.J: Wiley, 2010.

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Lemann, Martin F. Verfahrenstechnik und Umwelt. Bern: Peter Lang, 2000.

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Making things greener: Motivations and influences in the greening of manufacturing. Aldershot, England: Ashgate Pub., 1998.

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Yürüm, Yuda. Hydrogen Energy System: Production and Utilization of Hydrogen and Future Aspects. Dordrecht: Springer Netherlands, 1995.

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Environmentally improved production processes and products: An introduction. Dordrecht: Kluwer, 1996.

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Slater, Keith. Environmental impact of textiles: Production, processes and protection. Boca Raton: CRC Press, 2003.

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Environmentally conscious fossil energy production. Hoboken, N.J: Wiley, 2010.

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Yanli, Li, a cura di. Huan jing sheng chan yao su li lun yan jiu. Beijing: Ke xue chu ban she, 2010.

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Greener energy systems: Energy production technologies with minimum environmental impact. Boca Raton, FL: CRC Press, 2012.

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Capitoli di libri sul tema "Production engineering - Environmental aspects"

Heinemann, Tim. "Aluminium Die Casting and Its Environmental Aspects". In Sustainable Production, Life Cycle Engineering and Management, 7–64. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18815-7_2.

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Cerdas, Felipe, Stefan Andrew, Sebastian Thiede e Christoph Herrmann. "Environmental Aspects of the Recycling of Lithium-Ion Traction Batteries". In Sustainable Production, Life Cycle Engineering and Management, 267–88. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70572-9_16.

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Concas, Alessandro, Massimo Pisu e Giacomo Cao. "Engineering Aspects Related to the Use of Microalgae for Biofuel Production and CO2 Capture from Flue Gases". In Current Environmental Issues and Challenges, 73–111. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8777-2_5.

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Mazzara, Manuel, Alexandr Naumchev, Larisa Safina, Alberto Sillitti e Konstantin Urysov. "Teaching DevOps in Corporate Environments". In Software Engineering Aspects of Continuous Development and New Paradigms of Software Production and Deployment, 100–111. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06019-0_8.

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Mirhosseini, Samim, e Chris Parnin. "Opunit: Sanity Checks for Computing Environments". In Software Engineering Aspects of Continuous Development and New Paradigms of Software Production and Deployment, 167–80. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39306-9_12.

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Kassab, Mohamad, e Manuel Mazzara. "Towards Designing Smart Learning Environments with IoT". In Software Engineering Aspects of Continuous Development and New Paradigms of Software Production and Deployment, 152–66. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39306-9_11.

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Sanyal, Tapobrata. "Environmental Aspects". In Developments in Geotechnical Engineering, 141–47. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1932-6_12.

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Reddy, Krishna, Lionel Lemay, Amlan Mukherjee e Jeffrey Adams. "Environmental Aspects". In Engineering for Sustainable Communities, 87–97. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784414811.ch08.

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Bergmann, Ralf B. "Quality Aspects". In Lecture Notes in Production Engineering, 381–430. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-30916-8_10.

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Vollertsen, Frank. "Basic Aspects". In Lecture Notes in Production Engineering, 5–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-30916-8_2.

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Atti di convegni sul tema "Production engineering - Environmental aspects"

Kammash, T., e M. Orians. "Power production and environmental aspects of a fusion-hybrid reactor". In 2013 IEEE 25th Symposium on Fusion Engineering (SOFE). IEEE, 2013. http://dx.doi.org/10.1109/sofe.2013.6635289.

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Gniadek, Jacek, Robert Szewczyk e Izabela Piech. "The Role of the Land Layout Parameters and Production Efficiency in the Evaluation and Shaping of the Spatial Structure of Land". In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.191.

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The article contains the results of the plots layout research in the farms of the selected object in the southern Poland. The basic surface element adopted for the research, were continuous parts of the registry plots covered by one form of use. To carry out tests on such a large number of plots specialized computer programs used, which use data from the digital cadastral map and the descriptive part of the land and buildings registry documentation kept in digital system. The applied technology allowed obtaining more than 70 features, characterizing each analyzed plot. Detailed studies included the 15 basic features of plots layout, first four of which determine the spatial parameters of the plot, three features relate to the estimated costs of cultivation dependent on its layout, the next two describe the location of the plot in the village and in the farm, and the last five characterize the farm, that owns the plot. The obtained result allowed the identification of positive and negative aspects of the tested ground system indicating the necessary changes in terms of its improvement.

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Dreimanis, Karlis, Zane Indzere, Dagnija Blumberga e Vaida Šerevičienė. "Multicriteria Evaluaton of Efficiency in Fish Processing". In 11th International Conference “Environmental Engineering”. VGTU Technika, 2020. http://dx.doi.org/10.3846/enviro.2020.729.

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EU countries have agreed on GREEN DEAL and have committed to achieve carbon neutrality by 2050. Very important role for achieving the goal is playing production and manufacturing industry. This article is devoted to fish production industry, which is as subdivision of food production industry. During past decades the amount of fish caught has increased multiple times. Fishing industry nowadays is being strongly regulated and monitored by various institutions including. Which sets environmental legislation for controlling and improving industries impact (energy efficiency, pollution, waste) on the habitat and environment. For EU to make right decisions on how the member states could develop their fish production industry, it is necessary to have overall evaluation which includes the development opportunities. The efficiency of the fish production company characterizes the amount of resources used, as well as energy efficiency, water usage, the possibility to implement of circular economy, and other criteria which must be evaluated from the perspective if environmental, engineering, economic and social aspects. The fish production company analysis in this article are analysed using Data envelopement analysis (DEA) multicriteria analysis. First results show that fish manufacturers must pay attention to the technological processes in order to move towards carbon neutral society.

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Yilan, Gulsah, Arif Ozcan e Tanju Caglar. "Sustainable cardboard label production". In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p14.

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Recently, all industrial sectors have shown significantly increasing attention in reaching the sustainability goals regarding economic, environmental, social, and also technological aspects not only at the regional level but also nationwide and even global scale. Aside from being an economically popular concept, sustainability is strictly related to effective resource use and efficient waste disposal. Thus, it functions as a complementary issue to be considered in various production activities. The sustainable production approach includes reducing or (if possible) eliminating the negative impacts on the human health and environment, reducing the waste generated, increasing the recycling rate, and developing energy and material saving processes. The printing industry is one of the most important industries in reaching sustainable production goals. The need for the printed products, which is the focus of this study, is increasing in parallel with the changing consumer expectations and technological developments. However, from the point of the printing industry view, a solid sustainability consensus is not settled among the practitioners, yet. This study aims to evaluate the sustainability of the cardboard label production considering several combinations of raw materials such as paper, ink, and surface coating additives via appropriate Multi-Criteria Decision Analysis (MCDA) methods. The most frequently used paper and ink types are considered with three alternatives for each. To indicate the sustainability scores economic, environmental, and social evaluation criteria are selected. By applying the Multi-Attribute Utility Theory (MAUT), the sustainability score of each label is calculated to determine the optimum alternative in terms of the production process and also the material used. This evaluation provides detailed information to the producer and also to the consumer about the alternative production routes to use less energy and raw material, and also to decrease the environmental impacts while sustaining the economic feasibility. Besides, alternative solutions are offered to reach sustainability goals by considering the economic and environmental life cycle impacts of these materials. Hence, an increase in awareness about the printing industry and service channels is expected. Moreover, this study is also important in presenting the applicability of sustainability assessments in the printing industry.

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Yang, Yiran, e Lin Li. "Evaluation of Environmental Sustainability for Additive Manufacturing Batch Production". In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2957.

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Additive manufacturing (AM), owning to the unique layer-by-layer manufacturing method and its associated advantages, has been implemented in a great number of industries. To further expand the AM applications, the current low throughput of AM system needs to be improved. Consequently, the batch production method, where multiple parts are fabricated in one batch, has gained increasing research interest. In the current state of literature, most research efforts assess the batch production approach based on its manufacturing cost saving potential. Nevertheless, environmental sustainability, serving as a critical part in AM development, is less explored. Environmental sustainability of AM batch production needs to be thoroughly investigated and assessed, due to the potential environmental impacts and human health risks that AM batch production activities might cause. This research aims to advance the state-of-the-art on environmental sustainability evaluation for AM batch production, by experimentally comparing three main environmental sustainability aspects (i.e., energy consumption, emission, and material waste) for batch production processes with different batch sizes. Based on the experimental results, the feasibility of batch production method for AM is discussed. The outcomes of this research will help evaluate the AM batch production method from an environmental sustainability standpoint, and facilitate the development of AM batch production.

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Gonçalves, Maiara Moreira, Celso Kazuyuki Morooka e Ivan Rizzo Guilherme. "Selection of an Offshore Petroleum Production System by Evaluating an Environmental Impact Index". In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23461.

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The development of an offshore petroleum production system corresponds to define a set of equipment to make possible oil and gas extraction from an underwater petroleum reservoir. To better comprehension of the process, definition of this production system can be divided into phases. Phase I corresponds to the selection of number of wells and type of the well. Then, following the previous work (Franco, 2003), in the Phase II, the layout arrangement of wells and the set of the stationary Floating Production Unit (FPU) are selected. And, in the Phase III, storage and offloading alternatives for the produced oil and gas are selected. The present paper aims to identify environmental impacts associated with the each component of an offshore system for oil and gas production, and quantify each of them through indexes. It is expected to support the decision makers to select the best fitted system for a given offshore petroleum field. The increasing needs of petroleum to fulfill the energy matrix demanded in Brazil, the growing concern of the society for keeping the environment clean and the inclusion of an index related to the environment besides the technical and technological indexes usually taken makes it an important contribution to improve the process for selection and decision about the offshore production system. Particularly, it will be fundamental in the adverse condition of the Pre-salt scenario of petroleum production, in ultra-deep water depth and oil and gas with more aggressive contaminants to the system. The proposed methodology follows a similar procedure for the assessment of environmental impacts through the use of environmental sensitivity index (ESI) and the use of impact matrix (NOOA, 1997; Patin, 1999; Mariano and La Rovere, 2006). For the estimation of environmental impacts, it was defined the ESI of the area to be developed, and it was constructed an impact matrix based on the activities involved in the installation of platform, operational phase and decommissioning of a FPU and the elements from environment. Therefore, this systematic and structured approach allowed incorporating to the process of selection of the offshore production system for an oil and gas field the selection of alternative which combines the best technical and technological characteristics with better aspects from the environment.

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Zhang, Lianfeng, Jianxin Jiao e Shaligram Pokharel. "Process Platform-Based Production Configuration". In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85559.

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In nowadays’ changing manufacturing environment, designing product families based on product platforms has been well accepted as an effective means to fulfill product customization. The current production practice and academic research of platform based product development mostly focus on the design domain, whereas limited attention is paid to how production can take advantage of product families for realizing economy of scale through enormous repetitions. This paper puts forward a concept of process platforms, based on which an efficient and cost saving production configuration for new members of a product family can be achieved. A process platform implies three aspects, including generic representation, generic structures and generic planning. The issues and rationale of production configuration based on a process platform are presented. A multilevel system of nested colored object-oriented Petri Nets with changeable structures is proposed to model the configuration of production processes. To construct a process platform from existing process data, a data mining approach based on text mining and tree matching is introduced to identify the generic process structure of a process family. An industrial example of high variety production of vibration motors for hand phones is also reported.

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Bengtsson, N., J. Michaloski, F. Proctor, G. Shao e S. Venkatesh. "Towards Data-Driven Sustainable Machining: Combining MTConnect Production Data and Discrete Event Simulation". In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34178.

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Recently there has been an increased focus on the environmental aspects of the manufacturing industry across the world. Boeing and NIST have studied the incorporation of Life Cycle Assessments (LCA) parameters into Discrete Event Simulation (DES) as a means to analyze sustainable performance in the manufacturing area. Accurate analysis of manufacturing processes using Discrete Event Simulation requires detailed CNC production data. Using MTConnect, production LCA data from Boeing shop floor machine tools was acquired and was used to develop Discrete Event Simulation models. We will discuss our implementation, and analyze results of incorporating shop floor LCA data directly in DES models.

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Morooka, C. K., e G. T. Castro. "A Methodology for the Selection of an Alternative for a Floating Production System". In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28321.

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For the selection of a field production system in order to decide among several alternatives, in general, an oil company bases itself mainly on economical analysis aspects, such as net present value and internal rate of return. However, the evaluation of a field development project, generally speaking, needs a methodology for the selection of the best alternative that complies proportionally with all the objectives of the company. Which means that several other aspects besides the financial one should be taken into account in the selection decision process. The main purposes of the present work is to present the methodology for decision-making that supports selection of the best floating production system, for a given offshore oilfield. As an example, a typical field development project is evaluated based on this method. The present paper shows the importance to include technological, safety and environmental risk besides the usual financial one, used for selecting the best alternative of a floating production system in offshore field development.

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Shetty, Devdas, Tom Eppes, Lifeng Chao e Claudio Campana. "Integration of Modern Software Tools for Production Design". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16099.

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Engineers, irrespective of their disciplines, need effective tools to comprehensively design, model, synthesize and analyze the design a product. This is often closely followed by the need to fabricate a working prototype. Engineers need useful methodologies and tools that can be used in preparation for manufacturing. These tools need to effectively analyze assembly & disassembly since a good assembly design makes a product les expensive to service, repair and maintain. A suite of well-integrated tools assists designers to create, simulate and test in a comprehensive manner. Modern software tools can be used at each stage to create conceptual designs, simulate part geometries, analyze key parameters, and generate motion paths for efficient manufacturing. This paper presents a set of comprehensive procedures and tools that can easily be incorporated into product design and manufacturing from early design through analysis. They consider assembly and disassembly factors up to and including the creation of a working prototype. Due to environmental regulations, designers must think about the product life cycle, recycling and reuse aspects from the very beginning. There is a continuing need for more efficient and rapid design processes which can best be driven by better tools and techniques.

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Rapporti di organizzazioni sul tema "Production engineering - Environmental aspects"

Thumm, W., A. Finke, B. Neumeier, B. Beck, A. Kettrup, H. Steinberger, P. D. Moskowitz e R. Chapin. Environmental and health aspects of CIS-module production, use and disposal. Office of Scientific and Technical Information (OSTI), dicembre 1994. http://dx.doi.org/10.2172/34355.

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L. C. Lewis, D. C. Barg, C. L. Bendixsen, J. P. Henscheid, D. R. Wenzel e B. L. Denning. Idaho National Engineering and Environmental Laboratory Site Report on the Production and Use of Recycled Uranium. Office of Scientific and Technical Information (OSTI), settembre 2000. http://dx.doi.org/10.2172/768760.

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L. DeWayne, J. R. Green, P. Sharma S. Vogt, S. K. Frape, S. N. Davis e G. L. Cottrell. Chlorine-36 in Water, Snow, and Mid-Latitude Glacial Ice of North America: Meteoric and Weapons-Tests Production in the Vicinity of the Idaho National Engineering and Environmental Laboratory, Idaho. Office of Scientific and Technical Information (OSTI), gennaio 1999. http://dx.doi.org/10.2172/765561.

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Chlorine-36 in water, snow, and mid-latitude glacial ice of North America; meteoric and weapons-tests production in the vicinity of the Idaho National Engineering and Environmental Laboratory, Idaho. US Geological Survey, 1999. http://dx.doi.org/10.3133/wri994037.

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