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Teses / dissertações sobre o tema "Carbon dioxide (CO2)"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

NGUYEN, TUYET. "Carbon dioxide in ice rink refrigeration." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-118099.

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The average energy consumption of one ice rink is around 1000MWh/year, which approximately69% is occupied by the refrigeration unit and heating demand. With the aim of decreasing theenergy consumption, a new concept of refrigeration system with CO2 as a refrigerant has beendeveloped and it is promising to become a high potential next generation for refrigeration systemin ice rink.This thesis is to evaluate a new refrigerant application in ice rink refrigeration system underthree different aspects; energy performance, heat recovery potential and economic efﬁciency. Inorder to make this evaluati

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2

Dębek, Radoslaw. "Novel catalysts for chemical CO2 utilization." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066215/document.

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L'augmentation des émissions de dioxyde de carbone force l'implémentation de différentes stratégies de réduction des émissions de CO2 qui peuvent être divisées en deux groupes principaux: (i) Le captage du carbone et stockage (CCS) and (ii) le captage du carbone et utilisation (CCU). Un des procédés convertissant le CO2 en un produit à valeur ajoutée est le reformage à sec du méthane (DRM). Cependant le procédé de DRM n'a pas été commercialisé en raison de la forte endothermicité de la réaction et par manque de catalyseur actif, stable et bon marché à ce jour. Les matériaux possédant des propr

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3

Dervieux, Emmanuel. "Non-invasive transcutaneous characterisation of blood carbon dioxide (CO2) content." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAD043.

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Cette thèse cherche à développer une méthode non-invasive de mesure du taux de dioxyde de carbone (CO2) artériel, dont la connaissance est cruciale sur le plan clinique. Deux approches principales sont étudiées : la carbamétrie pulsée, qui extrapole les principes de l'oxymétrie à la carbamino-hémoglobine via des techniques spectrophotométriques, et l’étude de la diffusion transcutanée du CO2, qui donne des indications sur le contenu en CO2 des tissus sous-cutanés. La première approche s'est révélée être une impasse, tandis que la seconde montre un plus grand potentiel. En particulier, la piste

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4

Murray, Paul R. "High peak power, pulsed, planar waveguide CO2 lasers." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/1225.

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5

Momin, Farhana. "Reaction of sulfur dioxide (SO2) with reversible ionic liquids (RevILs) for carbon dioxide (CO2) capture." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/47525.

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Silylated amines, also known as reversible ionic liquids (RevILs), have been designed and structurally modified by our group for potential use as solvents for CO₂ capture from flue gas. An ideal CO₂ capture ionic liquid should be able to selectively and reversibly capture CO₂ and have tolerance for other components in flue gas, including SO₂, NO₂, and O₂. In this project, we study the reactivity, selectivity, uptake capacity, and reversibility of RevILs in the presence of pure SO₂ and mixed gas streams tosimulate flue gas compositions. Tripropylsilylamine (TPSA), a candidate CO₂ capture RevIL,

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6

Dingilian, Kayane Kohar. "Homogeneous Nucleation of Carbon Dioxide (CO2) in Supersonic Nozzles." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1607019789125519.

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7

Marszewska, Jowita E. "Development of microporosity in carbons for carbon dioxide adsorption." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1492043634249216.

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8

González, Fabra Joan. "Computational Design of Catalysts for Carbon Dioxide Recycling." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/664728.

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La utilització del diòxid de carboni com a substrat s'ha convertit en una estratègia popular des d'una perspectiva ambiental i econòmica per mitigar les emissions de CO2 a l'atmosfera i, al mateix temps, reduir la dependència del petroli per proporcionar substrats amb carboni. L'activació del diòxid de carboni és un procés complicat a causa de la seva estabilitat. El disseny de nous catalitzadors és una tasca complexa que requereix la combinació de tècniques experimentals i teòriques. Una d'aquestes és la modelització molecular, que permet descriure detalladament el sistema i comprendre com e

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9

Saada, Rim. "Catalytic conversion of carbon dioxide (CO2) into value added chemicals." Thesis, London South Bank University, 2015. http://researchopen.lsbu.ac.uk/1649/.

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Atmospheric concentrations of carbon dioxide (CO2) are significantly increasing since the industrial revolution at an accelerating rate causing environmental impact such as global warming and climate change. Projections indicate that CO2 concentrations will continue to rise to unsustainable levels. This highlights the scale of the challenge our scientists are facing in order to reduce CO2 emissions and underpins the importance of promoting green process engineering for the utilisation of CO2 as a valuable commodity in the process industry. The transformation of CO2 to value-added chemicals suc

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10

Erlandsson, Jennifer, and Fredrik Tannoury. "Climate Footprint on Transportation and Storage of Carbon Dioxide (CO2)." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281757.

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In order to combat climate change there is a need to achieve negative emissions. Bio-energy with carbon capture and storage (BECCS) is a promising technology that offers the possibility to remove carbon dioxide (CO2) emissions from the atmosphere. However, this also implies that the BECCS process needs to store more CO2 than it emits. The purpose of this study is to examine the liquefaction, intermediate storage, transportation and long term storage of CO2 and evaluate the climate impact of the energy use and the leakage of CO2. This thesis is based on data collected through an extensive liter

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11

Kilpatrick, Andrew David. "Fluid-mineral-CO2 interactions during geological storage of carbon dioxide." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/8889/.

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In order utilise geological carbon dioxide storage (GCS) at an industrial scale predictions of reservoir scale behaviour, both chemical and physical must be made. In order to ground-truth the geochemical data underlying such predictions, laboratory experiments at temperatures and CO2 pressures relevant to GCS are essential. Mineral dissolution rate, CO2 solubility and pH data has been collected from batch experiments carried out on quartz, K-feldspar, albite, calcite, dolomite and Sherwood Sandstone materials. These experiments were designed to assess the influence of a variety of factors on d

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12

Gao, Min. "Carbon dioxide absorption in metal organic frameworks." Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/23195.

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With the emission of carbon dioxide (CO2) becoming an international worry due its role in climate change, solutions such as CO2 capture and storage technologies are needed to decrease the emissions. The main proportion of CO2 gas emissions is from fossil fuel combustion in a range of industries, including power generation. To develop the CO2 capture system for these operations, new materials are needed for CO2 capture. Metal-organic framework (MOF) materials have porous crystal structures containing organic molecules (organic ligands) linked to each other by metalcontaining nodes. The large in

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13

Ford, Jackson Walker. "Designing for sustainability with CO2-tunable solvents." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19866.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. Charles A. Eckert; Committee Co-Chair: Dr. Charles L. Liotta; Committee Member: Dr. Amyn Teja; Committee Member: Dr. Dennis W. Hess; Committee Member: Dr. Victor Breedveld.

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14

Mosquera, Canchingre Alex. "Carbon dioxide utilization in the food industry. Synthesis of carbohydrates and their precursors via photocatalytic reduction of carbon dioxide." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282818.

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Today’s society strives to eliminate the carbon dioxide (CO2) emissions, which is the main greenhouse gas emitted through anthropogenic activities and contributes to climate change. In this project utilization of CO2 emissions from waste to energy plants to carbohydrates via photocatalytic reduction with water and further carbon coupling reactions is investigated. Two routes for the synthesis of carbohydrates have been investigated. Both methods use photocatalytic reduction of carbon dioxide to methanol and then proceed via different steps to produce carbohydrates or their precursors. The firs

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15

Ghannoum, Oula, of Western Sydney Hawkesbury University, Faculty of Agriculture and Horticulture, and School of Horticulture. "Responses of C3 and C4 Panicum grasses to CO2 enrichment." THESIS_FAH_HOR_Ghannoum_O.xml, 1997. http://handle.uws.edu.au:8081/1959.7/139.

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This project aims at investigating the effect of CO2 enrichment on the growth and gas exchange of C3, C3-C4 and C4 Panicum grasses. Potted plants were grown in soil under well watered conditions, in artificially lit environmentally controlled cabinets or naturally lit greenhouses at varying levels of CO2 enrichment. CO2 enrichment enhanced the dry weight of C3 and C4 Panicum species under optimal light and N supplies, but had no effect on the total leaf N or TNC concentrations. The high-CO2 induced photosynthetic reaction in the C3 species was accompanied by a reduced Rubisco concentration and

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16

Rodríguez, Sosa Sonia Amalia [UNESP]. "Reação histopatológica do tecido conjuntivo do dorso de ratos irradiado com laser de CO2 ou de Er:YAG." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/90395.

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Made available in DSpace on 2014-06-11T19:24:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-04-13Bitstream added on 2014-06-13T20:12:43Z : No. of bitstreams: 1 rodriguezsosa_sa_me_arafo.pdf: 4002699 bytes, checksum: b46c684f709232ac6c42ba9b90cd96e6 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O presente estudo avaliou a reação do tecido conjuntivo irradiado com os lasers de CO2 e de Er:YAG em feridas confeccionadas no dorso de ratos. Foram confeccionadas 2 feridas no dorso de

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17

Wright, Alfiya. "Economics of CCS CO2-EOR and permanent CO2 sequestration in the UKCS." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=239233.

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Carbon Capture and Storage (CCS) technology could help reduce anthropogenic CO2 emissions to the atmosphere. So far, CCS has failed to attract government support in the UK due to high costs of implementation. The broad deployment of CO2-EOR could aid the development of CCS by providing additional revenue streams for investors. The success of the CO2- EOR in the United States has raised the question of whether this success could be replicated in the UKCS. This thesis answers these questions by introducing two distinct models, which analyse the similarities and differences between the two oil pr

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18

Castro, Gómez Fernando Simón. "Theoretical studies on transition metal catalyzed carbon dioxide fixation." Doctoral thesis, Universitat Rovira i Virgili, 2014. http://hdl.handle.net/10803/403368.

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S’han dut a terme estudis teòrics amb la finalitat d’avaluar mecanismes de reacció per a processos de fixació de CO2, catalitzats per complexos de metalls de transició. D’aquesta forma, s’han descrit detalladament els passos del mecanisme de reacció (reaccions d’opertura d’anell, inserció de CO2 i tancament de l’anell) per la formació de carbonats cíclics a partir de CO2 i diferents epòxids, sota l’acció catalítica de complexos de Zn(salen), conjuntament amb Nbu4X (X = I, Br). Les energies d’activació calculades DFT calculationsmitjançant DFT són qualitatives, seguint la línea dels resultats e

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19

Green, Vicki C. "CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196688.

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20

Wilson, Solita. "Activation and Reduction of Carbon Dioxide Using Bis-Mesityl Imidazole Ylidene." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1559308312820674.

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21

Yoo, Seung Youl. "Geochemical Clogging in Carbonate Mineralization on Carbon Dioxide Sequestration." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/160987.

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22

Wei, Yang. "Effects of pure and impure carbon dioxide (CO2) on soil chemistry." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/10831/.

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A cleaner use of fossil fuels supported by Carbon Capture and Storage (CCS) techniques is considered to be one of the main short-term strategies for addressing the global climate change problem. However, potential CO2 or CO2/SO2 seepage during some of the phases of a CCS project not only reduces its performing efficiency, but also impacts the local environment, which could have further impacts on human health. It is therefore essential to assess the potential risks and provide evidence that the impacts are well understood. Moreover, studying the effects of CO2 leakage is useful for identifying

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23

Billy, Joshua Thomas Billy. "Investigating the Electrochemical Conversion of Carbon Dioxide to Fuels." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1515158634103019.

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24

Sawalha, Samer. "Carbon Dioxide in Supermarket Refrigeration." Doctoral thesis, Stockholm : Energiteknik, Energy Technology, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4753.

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25

Li, Dongfang. "Copper-based Metal-Organic-Framework for Electrochemical Carbon Dioxide Reduction." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29915.

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Copper has generated variable studies and applications in electrochemical CO2 reduction reaction (CO2RR) due to its difference in product diversity compared with other transition metals. Metal-Organic Frameworks (MOFs) as high-porosity structures have huge potential in many fields, such as energy storage and conversion, UiO-67 is widely used, especially in scenarios where thermal stability and alkaline environments are required. Here this project will induct Cu@UiO-67 and Cu@UiO-bpy could be electrochemical catalysts for CO2RR under alkaline conditions. It investigated the factor of reacting w

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Peixoto, Hugo Rocha. "Modeling of CO2 separation in post-combustion processes by PSA." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14096.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Adsorption processes involving carbon dioxide (CO2) capture and sequestration have been objects of different studies. A typical problem is the separation of CO2 from fuel gases emitted in power plants in order to mitigate the global warming effects. Recently, Pressure Swing Adsorption (PSA) technology is being applied to this separation. However, design and analysis of adsorption processes are a difficult task due to the large number of parameters involved. This work studies the dynamics of this separation in activated carbons C141

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Goodman, Joseph. "Economic and technical study of carbon dioxide reduction technologies." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-10182006-153257/.

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Defiani, Made Ria, of Western Sydney Hawkesbury University, Faculty of Science and Technology, and Centre for Horticulture and Plant Sciences. "Zinc requirements of rice at elevated CO2." THESIS_FST_HPS_Defiani_M.xml, 1999. http://handle.uws.edu.au:8081/1959.7/143.

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The current atmospheric CO2 partial pressure of 36 Pa is expected to nearly double by the end of the 21st Century.Increases of this magnitude are likely to profoundly change the biochemistry, growth and morphology of plants, particularly C3 species.The research in this thesis focuses on the micronutrient Zinc (Zn), because this element is associated with a number of macromolecules which play key roles in plant growth and development, particularly on the shoot apex.The main objective of the work was to study the influence of elevated CO2 Zn nutrition of rice in the vegetative phase.A second obj

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Baird, Russell A. "Novel techniques for interfacial tension and contact angle measurements in polymer/CO2 systems." Connect to this title online, 2005. http://hdl.handle.net/1811/306.

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Senior Honors Thesis (Chemical Engineering)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains 27 p.; also includes graphics Includes bibliographical references (p. 24-25). Available online via Ohio State University's Knowledge Bank.

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Larsson, Cecilia. "Effects of forestry on emission of CO2 from boreal lakes." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-67985.

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Inland waters have long been neglected in the global carbon cycle. They represent only 2,8% of the land area, but it has come clear that inland waters play a key role in the transformation of terrestrial fixed carbon to the atmosphere. Human activities do have an impact on the carbon cycling and it is important to understand how these changes affects natural biogeochemical and climatological processes. The purpose of this report was to investigate how forestry impacts the emission of carbon dioxide from boreal lakes and to evaluate which role lakes play in the global carbon cycle. The study wa

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Zargarzadeh, Payam. "Structural integrity of Carbon Dioxide transportation infrastructures." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/8059.

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Carbon Capture and Storage (CCS) is recognised as having a significant role to play in tackling climate change and reducing carbon dioxide (CO2) emissions. In CCS schemes, CO2 is captured from anthropogenic sources, and transported to suitable sites either for EOR (Enhanced Oil Recovery) or storage. The transport of such huge amount of CO2 causes new challenges. The main concern is in the difference between natural gas and CO2 transportation pipelines. CO2 phase behaviour during decompression, existence of different impurities and very high operating pressure are some of the new challenges for

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Frogneux, Xavier. "Transformations réductrices du CO2 pour la formation de liaisons C-N et C-C." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112136/document.

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Dans le monde actuel, le dioxyde de carbone (CO2) est le déchet majoritaire issu de l’utilisation des ressources fossiles mais il est encore peu utilisé dans les applications à grande échelle. Afin de tirer parti de son abondance, le développement de nouvelles transformations chimiques du CO2 pour accéder à des produits de chimie fine connait un intérêt croissant au sein de la communauté scientifique. Tout particulièrement, la formation de liaison(s) C-N à partir du CO2 et d’un substrat azotés permet d’accéder à des produits à hautes valeurs énergétiques et commerciales. Un second type de tran

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Wang, Xia. "Artificial Photosynthesis : Carbon dioxide photoreduction and catalyst heterogenization within solid materials." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLET025/document.

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Dans le contexte du réchauffement climatique et de l’usage abusif de combustibles fossiles, la recherche de sources d’énergie propres et durables est l’un des défis les plus importants de notre époque. Récemment, le stockage d’énergie solaire par la réduction de CO2 a fait l’objet d’un nouvel intérêt. Bien que la réduction de CO2 en carburants liquides ou gazeux soit une question à la fois fascinante et fondamentale, sa mise en œuvre dans les dispositifs technologiques reste très difficile à cause de la grande stabilité de CO2 et du caractère endergonique de sa transformation. On outre, les ré

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Gória, Marina Meloni [UNESP]. "Impacto do aumento da concentração de CO2 do ar sobre a brusone do arroz." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/97211.

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Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-10Bitstream added on 2014-06-13T20:18:27Z : No. of bitstreams: 1 goria_mm_me_botfca.pdf: 385248 bytes, checksum: aedd73597ba4895b9c4451da9ed36770 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O impacto da elevação da concentração de CO2 do ar sobre a brusone do arroz foi avaliado em estufas de topo aberto (OTCs) na Embrapa Meio Ambiente, Jaguariúna/SP, por dois anos. Foram realizados ensaios com cultivares de arroz em estufas com injeção de CO2, estufas sem in

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Lacerda, Lucy Mara Cacia Ferreira 1982. "Otimização de sistemas de microalgas para mitigação de CO2 e produção de biodiesel : Optimization of microalgae systems for CO2 mitigation and biodiesel production." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266635.

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Orientador: Telma Teixeira Franco<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-23T04:10:59Z (GMT). No. of bitstreams: 1 Lacerda_LucyMaraCaciaFerreira_D.pdf: 5787877 bytes, checksum: 81afde238358667a3fdefa912b6c3725 (MD5) Previous issue date: 2013<br>Resumo: O uso de microalgas em processos de mitigação ambiental e produção de energia renovável vêm ganhando destaque, mas a otimização das etapas de "upstream" e "downstream" são essenciais para que a viabilidade técnica e econômica seja alcançada e o processo imp

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Ho, Minh Trang Thi Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Techno-economic modelling of CO2 capture systems for Australian industrial sources." Awarded by:University of New South Wales. School of Chemical Sciences and Engineering, 2007. http://handle.unsw.edu.au/1959.4/30566.

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Australia is recognising that carbon capture and storage (CCS) may be a feasible pathway for addressing increasing levels of CO2 emissions. This thesis presents a preliminary economic assessment and comparison of the capture costs for different Australian CO2 emission sources. The capture technologies evaluated include solvent absorption, pressure swing adsorption (PSA), gas separation membranes and low temperature separation. The capture cost estimated for hydrogen production, IGCC power plants and natural gas processing is less than A$30/tonne CO2 avoided. CO2 capture cost for iron productio

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Chen, Chen. "The Manufacture of Polymer Nanocomposite Materials Using Supercritical Carbon Dioxide." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/30020.

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The use of supercritical carbon dioxide (scCO2) as a processing aid to help exfoliate nano-clays and improve their dispersion during melt blending in polymer matrices has been reported in the literature. One of the best processes in terms of improving the degree of nano-clay dispersion and composite mechanical properties was developed in our laboratory. This process allows the clay to be in direct contact with scCO2 and expanding the clay-CO2 mixture via rapid depressurization into a two-stage screw extruder to mix with the polymer pellets. However, composites with clay loading higher than 6.6

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Dennis, Wilson Dennis. "Estimation of Carbon Dioxide emissions from forest soils based on CO2 concentrations." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-33240.

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Forest soil is an important source of atmospheric CO2. Emission of CO2 from soil is the result of respiration of plant roots and soil organisms (Autotrophic and Heterotrophic respiration). This soil CO2 emission has a variation throughout the year with maximum emissions being in the summer. However, the seasonal variation affected by the external factors is not fully known. The aim of this thesis is to analyze a relationship between concentration of CO2 in the soil-atmosphere and CO2 emissions to the aboveground atmosphere. When knowing the relationship between CO2 concentration in the soil-at

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Gultekin, Cagdas. "Feasibilty Study Of Sequestration Of Carbon Dioxide In Geological Formations." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612756/index.pdf.

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Although there are some carbon capture and storage (CCS-CO2 sequestration) projects in all over the world, feasibility problems exist due to the high economical issues. The aim of this study is to evaluate the feasibility of a potential CCS project where the source of CO2 is Afsin Elbistan Thermal Power Plant. Selection of candidate sites in the vicinity of Diyarbakir, Batman and Adiyaman regions depends on sequestration criteria. According to sequestration criteria, CCS can be applied to &Ccedil<br>aylarbasi mature oil field, Midyat saline aquifer and Dodan CO2 gas field. Disposing of CO2 fro

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Sahibzada, Mortaza. "Methanol synthesis from CO2/H2 over Pd-promoted Cu/ZnO/A12)3 catalysts." Thesis, Imperial College London, 1995. http://hdl.handle.net/10044/1/11472.

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McElwain, Jennifer Claire. "Fossil stomatal parameters as indicators of palaeo-atmospheric CO2 concentration through Phanerozoic time." Thesis, Royal Holloway, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362713.

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Sejnoha, Milena. "Vapour-liquid equilibria of benzene and cyclohexane with CO2." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66092.

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Gaikwad, Rohit. "Carbon Dioxide To Methanol: Stoichiometric Catalytic Hydrogenation Under High Pressure Conditions." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/586089.

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El CO2 en la atmósfera aumenta a raíz del empleo de combustibles fósiles. La hidrogenación de CO2 ofrece una ruta única para transformar esta molécula en productos químicos o combustibles como el metanol. El uso de alta presión en el ratio CO2:H2 = 1:>3 permite incrementar la cinética de la reacción, alcanzando así la conversión termodinámica como ya se ha reportado. No obstante, el mayor inconveniente del mencionado proceso es el tratamiento del hidrógeno sin reaccionar. Por ello, se evaluaron las ventajas de realizar la reacción a alta presión en condiciones estequiométricas (CO2:H2=1:3

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Amado, Verónica Catarina Ferreira. "“One-pot” enzymatic conversion of CO2 to methanol." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10900.

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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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Pepper, David A. "Investigation of the long term physiological response of Huon pine (Lagarostrobos franklinii) to changes in atmospheric CO2 and climate using stable isotopes." Phd thesis, School of Biological Sciences, 1999. http://hdl.handle.net/2123/4032.

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Thesis (Ph. D.)--University of Sydney, 2000.<br>Title from title screen (viewed February 12, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2000; thesis submitted 1999. The 2 in the title is in subscript. Includes bibliographical references. Also available in print form.

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Rodríguez, Sosa Sonia Amalia. "Reação histopatológica do tecido conjuntivo do dorso de ratos irradiado com laser de CO2 ou de Er:YAG /." Araraquara : [s.n.], 2004. http://hdl.handle.net/11449/90395.

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Resumo: O presente estudo avaliou a reação do tecido conjuntivo irradiado com os lasers de CO2 e de Er:YAG em feridas confeccionadas no dorso de ratos. Foram confeccionadas 2 feridas no dorso de 30 ratos com um punch de 3mm de diâmetro. Os animais foram divididos em três grupos de 10: no Grupo I as feridas foram irradiadas com o laser de CO2, l 10,6 mm, (1,5 W -50 Hz); no Grupo II as feridas foram irradiadas com o laser de Er:YAG, l 2,94 mm (300 mJ -10 Hz), tempo de irradiação de 23 segundos em ambos os grupos; e no grupo III as feridas não foram submetidas à irradiação. Após o ato operatório,

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Afonso, Joana da Costa Franco. "Catalytic hydrogenation of carbon dioxide to form methanol and methane." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10854.

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Laferty, Edward Alan. "Oxygen and Carbon Dioxide Levels During Qualitative Respirator Fit Testing." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1086808006.

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Sánchez-Cañete, Enrique P., Russell L. Scott, Haren Joost van, and Greg A. Barron-Gafford. "Improving the accuracy of the gradient method for determining soil carbon dioxide efflux." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/623105.

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Soil CO2 efflux (F-soil) represents a significant source of ecosystem CO2 emissions that is rarely quantified with high-temporal-resolution data in carbon flux studies. F-soil estimates can be obtained by the low-cost gradient method (GM), but the utility of the method is hindered by uncertainties in the application of published models for the diffusion coefficient. Therefore, to address and resolve these uncertainties, we compared F-soil measured by 2 soil CO2 efflux chambers and F-soil estimated by 16 gas transport models using the GM across 1year. We used 14 published empirical gas diffusio

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