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1

Frost, Robin. "Quantifying greenhouse gases in business supply chains." Thesis, Lancaster University, 2017. http://eprints.lancs.ac.uk/87614/.

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This thesis is written in the context of a world that is on the brink of experiencing severe climate change, and as a result must explore a variety of methods for reducing greenhouse gas (GHG) emissions. Whilst national governments and international organisations enact treaties and frameworks, the role of business as a driver of increasing GHG emissions is also being examined. In these circumstances the measurement of organisational footprints is of considerable interest. (Berners-Lee, et al., 2011) showed how the supply chain footprint of a small leisure business could be estimated using Envi
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2

Jachym, Anne-Laure. "Economic Growth, Greenhouse Gases and Environmental Regulation." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/38154.

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Dans cette étude, nous cherchons à mesurer l’impact des émissions anthropogéniques de gaz à effet de serre sur la croissance économique dans un modèle de convergence conditionnelle. Nous nous intéressons au dioxyde de carbone, au méthane, au protoxyde d’azote et au groupe des "gaz F", ainsi qu’à l’effet de la somme de ces polluants, c’est-à-dire la quasi totalité des gaz à effet de serre. Notre échantillon est composé de 81 pays, avec une variété de niveaux de revenu par habitant, entre 1993 et 2012. Nous définissons deux sous-périodes de 10 ans et nous régressons la croissance économique sur
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3

Boereboom, Thierry. "Greenhouse gases investigations in ice from periglacial environments." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209673.

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L’environnement périglaciaire en général et les régions de permafrost en particulier, connus pour être très sensibles au changement climatique actuel, sont le sujet de beaucoup d’études sur les émissions de gaz à effet de serre. En effet, le dégel de ces milieux engendre la mobilisation d’une quantité importante de matière organique, précédemment piégée par le froid, favorisant les émissions de dioxyde de carbone et/ou de méthane. L’objectif premier, du présent travail, est de contribuer à l’étude des gaz enfermés dans certains types de glace de ces régions afin de mieux quantifier leur impact
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4

Leung, Wing Chi. "Modelling greenhouse gases in a general equilibrium model." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/43724.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.<br>Includes bibliographical references (leaves 51-52).<br>by Wing Chi Leung.<br>M.Eng.
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5

Anselmo, Christophe. "Atmospheric greenhouse gases detection by optical similitude absorption spectroscopy." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1131/document.

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Cette thèse porte sur le développement théorique et expérimental d’une nouvelle méthodologie de détection des gaz à effet de serre basée sur la spectroscopie optique d’absorption. La question posée était : est-il possible d’évaluer de manière univoque la concentration d’un gaz à partir d’une mesure par spectroscopie d’absorption différentielle, dans laquelle l’étendue spectrale de la source lumineuse est plus large que celle d’une ou de plusieurs raies d'absorption de la molécule considérée et que, de plus la détection n’est pas résolue spectralement ? La réponse à cette question permettra d’e
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6

Prabhu, Anil K. "Catalytic Transformation of Greenhouse Gases in a Membrane Reactor." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26430.

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Supported Ni and Rh catalysts were developed for the reforming of two greenhouse gases, methane and carbon dioxide to syngas (a mixture of hydrogen and carbon monoxide). This is an endothermic, equilibrium limited reaction. To overcome the thermodynamic limitations, a commercially available porous membrane (Vycor glass) was used in a combined reactor-separator configuration. This was to selectively remove one or more of the products from the reaction chamber, and consequently shift the equilibrium to the right. However, the separation mechanism in this membrane involved Knudsen diffusion,
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7

O'Shea, Sebastian James. "Airborne observations and regional flux estimates of greenhouse gases." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/airborne-observations-and-regional-flux-estimates-of-greenhouse-gases(9cc17627-8320-4ffd-9cf7-faf4688bf20d).html.

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Methane is the second most important long-lived greenhouse gas. However, it is typically emitted to the atmosphere by spatially and temporally heterogeneous sources, meaning that local measurements cannot easily be extrapolated to represent global scales. As a consequence, its global sources and sinks are generally poorly quantified. This thesis focuses on the use of airborne observations to improve flux estimates of methane at regional scales. A commercially available cavity-enhanced absorption spectrometer has been modified here for airborne measurements of methane and carbon dioxide. An alg
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8

Hill, Heather. "Local government and greenhouse action in South Australia /." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09ENV/09envh646.pdf.

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9

Figueras, Valls Marc. "Nanostructured transition metal carbides as potential catalysts for greenhouse gases conversion." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673020.

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Over the recent decades, several studies revealed the precarious climate situation which is threatening all Life forms on earth, including mankind, even if sometimes we tend to ignore the actual fragility of our situation. Ironically, the human species is at the origin of the rapid change on climate, mostly by practicing unsustainable activities, such as the unregulated consumption of fossil fuels, excessive deforestation, extensive agriculture, and intensive livestock. All these practices have increased the concentration of greenhouse gases in the atmosphere, producing a rapid increase in the
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10

Maltby, Johanna [Verfasser]. "Production of greenhouse gases in organic-rich sediments / Johanna Maltby." Kiel : Universitätsbibliothek Kiel, 2015. http://d-nb.info/1078504245/34.

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11

Totterdill, Anna Elizabeth MacKinlay. "On the mesospheric removal of very long-lived greenhouse gases." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/20509/.

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The fluorinated gases SF6, NF3 and CFC-115 are chemically inert with atmospheric lifetimes of many centuries which, combined with their strong absorption of infrared radiation, results in unusually high global warming potentials. Very long lifetimes imply that potential mesospheric sinks could make important contributions to their atmospheric removal. In order to investigate this, the reactions of each species with the neutral metal atoms Na, K, Mg and Fe, which are produced by meteoric ablation in the upper mesosphere, were therefore studied. The observed non-Arrhenius temperature dependences
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12

Olesniewicz, Timothy J. "Unanticipated Consequences of Regional Greenhouse Gas Policies: Criteria Emissions and the Regional Greenhouse Gas Initiave." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/OlesniewiczTJ2008.pdf.

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13

Morris, Samantha Anne. "Molecular ecology of methane-oxidising bacteria in drained and flooded peat." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269192.

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Evidence has shown that changes in land-use can affect the potential of the soil to act as a methane sink. The Lakenheath site consists of drained fenland peat, which is being re-converted to wetland. At the time of this study the site consisted of four land-use types, an intensively cultivated plot, unmanaged grassland, woodland, and wetland. Peat cores were taken from the four plots and compared for their ability to act as a methane sink. CH4 uptake was measured throughout the depth profiles using gas chromatography. Clear differences in methane oxidation rates were recorded with depth and l
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14

Stepp, Matthew. "Limiting transportation sector greenhouse gas emissions : the role of system interaction on policy portfolio effectiveness /." Online version of thesis, 2009. http://hdl.handle.net/1850/10633.

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15

Lee, Yu-tao. "A study on greenhouse gases in Hong Kong : sources and mitigation /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21301694.

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16

Nkongolo, Nsalambi Vakanda. "Quantification of greenhouse gas fluxes from soil in agricultural fields." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1474.

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Field studies were conducted at Lincoln University of Missouri (USA) and Hokkaido University (Japan) to: (i) study the relationships between greenhouse gases emissions and soil properties, (ii) assess the influence of agricultural practices on greenhouse gas fluxes and soil properties and (iii) improve the quantification of greenhouse gases from soil in agricultural fields using geospatial technologies. Results showed that besides soil temperature (T), soil thermal properties such as thermal conductivity (K), resistivity (R) and diffusivity (D) and soil pore spaces indices such as the pore tor
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17

Anderson, Linse N. "A greenhouse gas emissions inventory and emissions offset strategies for the University of Wyoming." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1663116701&sid=2&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Thesis (M.A.)--University of Wyoming, 2008.<br>Title from PDF title page (viewed on August 4, 2009). Interdisciplinary thesis in International Studies and Environment and Natural Resources. Includes bibliographical references (p. 58-63).
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18

Wiegard, Jean, and JWiegard@groupwise swin edu au. "Quantification of Greenhouse Gases at Visy Industries using Life Cycle Assessment." Swinburne University of Technology. School of Engineering and Science, 2001. http://adt.lib.swin.edu.au./public/adt-VSWT20030729.140753.

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Greenhouse gases (GHGs) are vital components of the earth�s atmosphere, trapping heat around the earth, maintaining temperatures necessary for human existence. Until the Industrial Revolution, these gases existed in a natural equilibrium with the environment. Since that time, anthropogenic activities such as fossil fuel burning and land clearing have increased the quantity of GHGs, such as carbon dioxide (CO2) and methane (CH4), in the earth�s atmosphere. Evidence indicates that global warming is occurring as a result of the additional accumulation of GHGs in the atmosphere. International
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19

Lee, Yu-tao, and 李裕韜。. "A study on greenhouse gases in Hong Kong: sources and mitigation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31254317.

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20

Hall, Edith Carol Sonne. "Greenhouse gas emissions from Pacific Northwest forestry operations : implications for forest management /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5596.

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21

Rata, Nigel David. "Development of new cryogenic extraction techniques for studying stable isotopic ratios in atmospheric methane." Thesis, Royal Holloway, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312798.

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22

Richer, Hannah R. "Mechanistic studies of the photo-oxidation of some halogenated species of atmospheric interest." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238804.

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23

Lott, Robert Martin Terence. "Investigations into new methods for the destruction of CF←4 and C←2F←6." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389335.

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24

Al-Batty, Sirhan Ibrahim. "Utilization of CO2 to Mitigate Greenhouse Gas Effect." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271443724.

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25

Hermans, Renee Elisabeth Maria. "Impact of forest-to-bog restoration on greenhouse gas fluxes." Thesis, University of Stirling, 2018. http://hdl.handle.net/1893/27319.

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Large areas of northern peatlands have been drained and afforested in the second half of the 20th century with significant impacts on important ecosystem services, including loss of biodiversity and potential changes in C storage. A considerable effort is currently invested into restoring original peatland function and ecosystem services, with an increasing area of newly restored peatland areas over recent years. However, the effect of restoration on the greenhouse gas (GHG) budget is unknown. This study is the first quantification of CO2, CH4 and N2O fluxes from forest-to-bog restoration site
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26

Lam, Chung, and 林松. "Greenhouse gas emissions in Hong Kong: sources, mitigations, and prospects." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31255887.

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27

Feliciano, Diana. "The contribution of rural land uses to greenhouse gas neutral regions." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=189641.

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28

Silveira, Raiza Felismino. "Energy partition and nitrogen utilization by growing goats fed encapsulated calcium nitrate /." Jaboticabal, 2017. http://hdl.handle.net/11449/151442.

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Orientador: Kleber Tomás de Resende<br>Coorientador: Marcia Helena Machado da Rocha Fernandes<br>Banca: Rafael Canonenco de Araújo<br>Banca: Carla Joice Härter<br>Resumo: O nitrato de cálcio encapsulado (NCE) tem sido estudado nos últimos anos como uma fonte de nitrogênio não proteico (NNP) e representa uma alternativa ao uso do hidrogênio livre no ambiente ruminal, reduzindo assim a emissão de metano e possibilitando uma maior eficiência no uso da energia. Assim, o objetivo do presente estudo foi avaliar o uso do nitrato de cálcio encapsulado como substituto do farelo de soja na partição de e
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29

Holtwisch, Christoph. "Das Nichteinhaltungsverfahren des Kyoto-Protokolls : Enstehung - Gestalt - Wirkung /." Berlin : Duncker & Humblot, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015046094&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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30

Chadwick, David R. "The effect of climate on decomposition in forest ecosystems." Thesis, Lancaster University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282376.

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31

Holloway, Lewis E. "Global warming and changing patterns of horticultural production in the United Kingdom." Thesis, Coventry University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282604.

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32

Dowrick, David John. "Laboratory studies of biogeochemical processes in wetlands subject to simulated climate change." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262748.

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McManus, Marcelle. "Life cycle assessment of rapeseed and mineral oil based fluid power systems." Thesis, University of Bath, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340991.

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Greally, Brian Roger. "Development of an analytical system for the determination of highly fluorinated compounds in air samples." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302161.

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35

Miller, Gemma A. "The impacts of agricultural land management on soil carbon stabilisation." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25437.

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Soil is the largest terrestrial carbon (C) store, containing an estimated ~1500 Gt C in the upper 1 m of soil. The long term storage of soil organic C (SOC) requires that it is somehow protected from microbial decomposition – or ‘stabilised’ – in the soil matrix. Three mechanisms are commonly identified as factors controlling the stability of SOM: chemical recalcitrance, physical protection in aggregates and adsorption to soil mineral surfaces. The stability of SOC in the soil matrix can be influenced by management practices and changes in soil structure can lead to loss of SOC and increases i
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Reinklou, Johan. "Livscykelanalys av granulärt svavel respektive torv : Vilken produkt genererar minst utsläpp av växthusgaser?" Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-122924.

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The purpose of this report was to investigate which of the two products peat and granular sulphur that generates the least greenhouse gas emissions. The study was performed by doing a comparative Life Cycle Assessment (LCA) on the two different products. To perform the LCA, a standard from the Swedish Standards Institute was used. Data to put into the calculation was obtained from both Umeå Energi, their contractors and different internet-sources. The data was then multiplied with specific emission factors to get the total emission of greenhouse gases, expressed as carbon dioxide equivalents.
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37

Lee, S. E. "Modelling interactions between climate and global vegetation in response to climate change." Thesis, University of Sheffield, 1997. http://etheses.whiterose.ac.uk/2063/.

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Climate change associated with increasing concentrations of the greenhouse gas, carbon dioxide(CO2), is expected to lead to an increase in global mean temperature of between 1 and 3.5 deg C by the end of the 21st century, with regional changes in rainfall and humidity. This thesis is concerned with modelling the effects of a changing climate and atmospheric C02 concentration on global vegetation. The process-based model, DOLY (Dynamic glObal phtogeographY), is used. It is able to operate using three climate variables, two soil variables and an atmospheric CO2 concentration. Its outputs are lea
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Hughes, Peter Samuel. "A strategy for reducing emissions of greenhouse gases from personal travel in Britain." Thesis, n.p, 1992. http://oro.open.ac.uk/19843/.

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Builes, Toro Santiago. "Understanding the behavior of materials for caputre of greenhouse gases by molecular simulations." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/83951.

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Establecer una cota global a las emisiones de gases de efecto invernadero ha sido imposibilitado por la complejidad que conlleva demostrar los efectos de la contribución humana al efecto invernadero. Para alcanzar un desarrollo sostenible es necesario, primero limitar y en lo posible eliminar las emisiones de dichos gases a la atmosfera. En este contexto, la adsorción de gases se ha establecido como una de las alternativas más efectivas a mediano plazo para la reducción de emisiones de gases de efecto invernadero. Por lo tanto, en esta tesis, el objetivo principal es estudiar a nivel mol
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Tran, Julie. "Greenhouse gases embodied in international trade : an input-output analysis for Canada : 2002." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39774.

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Both climate change and actions to fight it are occurring against rapidly expanding international trade flows, which increasingly lead to the separation of production and consumption patterns. Through the trade of goods in a globally interdependent world, the consumption in each country is linked to greenhouse gases (GHG) emissions in other countries because GHGs are emitted throughout the supply chain involved in producing those goods; a phenomenon referred to as ‘embodied GHG’. In this research, taking a consumption-based approach and using an environmental input-output analysis, I explore
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Ganesan, Anita Lakshmi. "Quantifying emissions of greenhouse gases from South Asia through a targeted measurement campaign." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82307.

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Thesis (Ph. D. in Climate Physics and Chemistry)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 161-167).<br>Methane (CH 4 ), nitrous oxide (N20) and sulfur hexafluoride (SF6) are powerful greenhouse gases with global budgets that are well-known but regional distributions that are not adequately constrained for the purposes of mitigation and policy initiatives. Quantifying emissions using inverse approaches at the national scale requires measurements that spec
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Novais, Sarah Vieira. "Biochars in the mitigation of greenhouse gases and on phosphorus removal and reuse." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-10052018-170240/.

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Measures aimed at mitigating environmental impacts, especially the anthropic ones, are being progressively studied. Increasing greenhouse gases (GHG) emissions are among the biggest environmental problems in the world, with agriculture one of the major contributors to this impact. Water eutrophication from land misuse and agricultural systems also fits into such a scenario of concern. Biochar, the product of the pyrolysis of organic materials, appears as a recover of a list of environmental problems, among them the mitigation of GHG and the recovery of eutrophic or wastewater. In this sense, b
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Dias, Lívia Cristina Pinto. "Patterns of land use and greenhouse gases emissions from Brazilian agriculture (1940-2014)." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/11612.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2017-08-24T13:59:27Z No. of bitstreams: 1 texto completo.pdf: 3166266 bytes, checksum: 204ca5ff74b0dc51070dadfd7275ddb5 (MD5)<br>Made available in DSpace on 2017-08-24T13:59:27Z (GMT). No. of bitstreams: 1 texto completo.pdf: 3166266 bytes, checksum: 204ca5ff74b0dc51070dadfd7275ddb5 (MD5) Previous issue date: 2017-06-14<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Dada a grande extensão do Brasil, sua enorme diversidade de vegetação e heterogeneidade agrícola, o desenvolvimento de políticas agrícolas e
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Marinheiro, Joana Filipa Jorge. "Quantification of greenhouse gas emissions from the biodegradation of garden waste." Master's thesis, ISA, 2019. http://hdl.handle.net/10400.5/19478.

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Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia<br>The primary aim of this study was to quantify garden waste potential for GHG emissions (with focus on CH4 and N2O); and to identify relationships between these GHG emissions and meteorological variables in different climates. The study was carried out in two countries with contrasting climates and soil structures: Portugal with a Mediterranean climate and Scotland with a hyperoceanic climate. A closed static chamber methodology was used for measure N2O and CH4 gaseous flux in three types of treatments installed in contain
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Gupta, Manish. "Restricting greenhouse gas emissions : economic implications for India /." New Delhi : Serials Publ, 2006. http://www.gbv.de/dms/zbw/522298486.pdf.

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Nariman, Mostafavi Seyed. "Literature Review and Analysis of Greenhouse Gases in the LEED Rating Program : A review of the currently available literature with regards to greenhouse gas calculations for green buildings." Thesis, KTH, Industriell ekologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-108292.

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Choi, Chuen-yin, and 蔡雋妍. "Combating climate change: the control of greenhouse gas emissions in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50254856.

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Assunção, Marcelo Henrique Correa [UNESP]. "Emissões de gases do efeito estufa em sistemas multitróficos de aquicultura." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150932.

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Submitted by MARCELO HENRIQUE CORREA ASSUNÇÃO null (marcelohassuncao@yahoo.com.br) on 2017-06-20T02:54:52Z No. of bitstreams: 1 tese_marceloassuncao_final.pdf: 1226336 bytes, checksum: f3c615d93eada896ca7e57893d573911 (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-06-21T13:27:50Z (GMT) No. of bitstreams: 1 assuncao_mhc_dr_jabo.pdf: 1226336 bytes, checksum: f3c615d93eada896ca7e57893d573911 (MD5)<br>Made available in DSpace on 2017-06-21T13:27:50Z (GMT). No. of bitstreams: 1 assuncao_mhc_dr_jabo.pdf: 1226336 bytes, checksum: f3c615d93eada896ca7e57893
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Hyman, Robert C., John M. Reilly, Mustafa H. M. Babiker, and Masin Ardoin De. "Modeling non-CO₂ greenhouse gases." 2002. http://hdl.handle.net/1721.1/3617.

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Although emissions of CO₂ are the largest anthropogenic contributor to the risks of climate change, other substances are important in the formulation of a cost-effective response. To provide improved facilities for addressing their role, we develop an approach for endogenizing control of these other greenhouse gases within a computable general equilibrium (CGE) model of the world economy. The calculation is consistent with underlying economic production theory. For parameterization it is able to draw on marginal abatement cost (MAC) functions for these gases based on detailed technological des
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Chen, Yi-Wen, and 陳意雯. "A Study of Using Low Greenhouse Effect Gases as Tracer Gases." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/89741401656780697260.

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碩士<br>長榮大學<br>職業安全與衛生學系碩士班<br>103<br>Sulfur hexafluoride (SF6) is often used as the tracer gas to determine the performance of general ventilation or local exhaust ventilation, although SF6 is stable, non-toxic, incombustibly and non-existing substance in nature. It looks perfect to meet the requirement of being a tracer gas, but it has high global warming potential (GWP) 22,800 and great potential hazard to the environment. The global warming situation became more serious in recent years. We have to find other gases to replace SF6 as the tracer gas. Recent researches discussed the possible
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