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Dissertations / Theses on the topic 'Sustainable solvent'

Author: Grafiati

Published: 5 October 2024

Last updated: 31 July 2025

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1

Dakubo, Francis. "Sustainable Mining - Solving the Problem of Chalcopyrite Treatment/Processing - Leaching, Solvent Extraction & Flotation." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/604862.

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Chalcopyrite ore forms the significant fraction of copper deposits in the earth crust. However, it is also the most difficult to treat using conventional ferric leaching methods. Smelting and electro-refining are currently the methods used in treating chalcopyrite concentrate obtained from froth flotation. Due to the ever increasing environmental requirements on smelters by the Environmental Protection Agency, new smelters are scarce in the United States. The scarcity of smelters has led to the urgent need to find a novel leaching method for the abundant chalcopyrite deposits in the USA and th

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2

Draucker, Laura Christine. "Novel Solvent Systems for the Development of Sustainable Technology." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16188.

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Sustainable development in chemical engineering offers technical, industrially relevant solutions to environmental and economic issues. This work focuses on three specific issues; improving solvent selection and reducing costly experimentation, improving catalyst recovery while reducing reaction time, and producing commercial viable biofuels by cost effective pretreatments and valuable side product extractions. Novel solvent systems are a sustainable solution because they provide the ability to replace costly solvents with cheap, benign, and recyclable systems. Specifically, this work investi

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Onwukamike, Kelechukwu Nnabuike. "Sustainable cellulose solubilization, regeneration and derivatization in a DBU-CO2 switchable solvent system." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0016/document.

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Source de carbone la plus abondante du règne végétal et non concurrentielle de la chaîne alimentaire, la cellulose est une alternative aux ressources fossiles crédible pour le développement de nouveaux matériaux polymères. Néanmoins, à ce jour, les nombreux travaux décrits dans la littérature et visant la valorisation et la modification chimique de ce biopolymère fascinant ne répondent pas suffisamment, ou tout au moins que très partiellement, aux critères de durabilité. Pour répondre à ces critères de développement durable, le caractère renouvelable de la cellulose et les concepts de procédés

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Whitaker, Mariah R. "Design of Heterogeneous Catalysts Incorporating Solvent-Like Surface Functionality for Sustainable Chemical Production." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1563303994362428.

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Fullarton, Claire. "Working towards a new sustainable rechargeable battery : zinc, conducting polymer and deep eutectic solvent system." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/31863.

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Electronically conducting polymers based on functionalised thiophenes and pyrroles have continued to stimulate academic interest as well as starting to be employed in practical applications and uses. This thesis describes studies of the electronic properties of mixed thiophene-pyrrole polymers (based on custom synthesised mixed monomer precursors) and polymers electrodeposited from commercially available monomers, pyrrole and 3,4-ethylenedioxythiophene, in respect to energy storage applications including batteries and ion selective membranes. In such applications the movement of ion and solven

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6

BHANDARI, SHASHANK. "Design of a solvent recovery system in a pharmaceutical manufacturing plant." Thesis, KTH, Skolan för kemivetenskap (CHE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190901.

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Solvents play a crucial role in the Active Pharmaceutical Ingredient (API) manufacturing and are used in large quantities. Most of the industries incinerate the waste solvents or send it to waste management companies for destruction to avoid waste handling and cross-contamination. It is not a cost effective method and also hazardous to the environment. This study has been performed at AstraZeneca’s API manufacturing plant at Sodertalje, Sweden. In order to find a solution, a solvent recovery system is modeled and simulated using ASPEN plus and ASPEN batch modeler. The waste streams were select

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Shearouse, William C. "Development and mechanistic understanding of ball milling as a sustainable alternative to traditional synthesis." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353089340.

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Zhang, Zhaoxi. "A study of solute-solvent interactions in methanol solutions : potential new sustainable technologies for refinery product upgrading/separating and methanol utilization." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:c01e67d6-ed58-4c7c-8913-00f3e0a6408c.

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The upgrading of fluid catalytic cracking (FCC) gasoline is a significant refinery process which is required to decrease FCC gasoline's alkenes and organosulfur compounds (OSCs) levels to meet stringent, regulated specifications, whilst maintaining or increasing the octane number. The separation and recovery of alkene contents in gaseous alkene and alkane mixtures produced in the refining process is presently a substantial consumer of both energy and resources. The current processes for these upgrading or separation processes rely heavily upon energy - intensive technologies which require seve

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9

Onwukamike, Kelechukwu Nnabuike [Verfasser], M. A. R. [Akademischer Betreuer] Meier, and H. [Akademischer Betreuer] Cramail. "Sustainable Cellulose Solubilization, Regeneration and Derivatization in a DBU-CO$_2}$ Switchable Solvent System / Kelechukwu Nnabuike Onwukamike ; Betreuer: M.A.R. Meier, H. Cramail." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1181190525/34.

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Chagnoleau, Jean-Baptiste. "Extraction de composés naturels à l'aide de solvants durables : expérience et modélisation." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5023.

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Les extraits naturels de plantes sont des ingrédients précieux pour un large éventail d'applications, notamment dans les industries cosmétiques ou pharmaceutiques ou dans les industries des parfums ou alimentaires. Mais l'extraction de ces composés naturels reste majoritairement réalisée à l'aide de solvants organiques volatils (COV) et de procédés ayant des impacts environnementaux importants. Dans le contexte récent de la chimie verte et de l'éco-extraction, des solvants alternatifs durables ont été développés pour remplacer les COV. Parmi ces solvants, les solvants biosourcés (BioSol), les

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Piovani, Laura. "Study of low environmental coating products: bio-based water products and solvent based products deriving from PET recycling." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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In this study three different projects are presented.The first consist in the analysis of two different bio resins with which a white and a transparent water-based base coat, a transparent water-based top coat and a water-based hydro-oil are formulated, applied and characterized, replacing the fossil based resins. First, the two bio resins are analyzed in terms of compatibility with other resins, additives and solvents and then the products formulated are characterized in terms of viscosity and chemical resistances. After the application, the products are analyzed in terms of filming capacity.

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Kassner, Michelle Kimberly. "Novel sustainable solvents for bioprocessing applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26683.

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Thesis (Ph. D.)--Chemical Engineering, Georgia Institute of Technology, 2009.<br>Committee Co-Chair: Eckert, Charles; Committee Co-Chair: Liotta, Charles; Committee Member: Bommarius, Andreas; Committee Member: FernÃ¡ndez, Facundo; Committee Member: Lu, Hang. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Hart, Ryan J. "Designing switchable solvents for sustainable process development." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/39631.

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Novel solvents utilizing a reversible CO₂ induced property switch are presented. The synthetic procedure for designing the solvents is discussed, along with detailed characterizations on both solvent forms to serve as a tool for optimal solvent identification as well as future solvent design. A reflectance infrared spectroscopic technique is introduced to allow for the examination of CO₂ and solvent composition under high pressures and temperatures. The magnitude of solvent property changes afforded by this "switch" creates opportunities for sustainable processing; discussed are the applicatio

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Vagnoni, Martina <1993&gt. "CO2 utilization and alternative solvents: effective tools for sustainable applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10428/1/CO2%20UTILIZATION%20AND%20ALTERNATIVE%20SOLVENTS%20EFFECTIVE%20TOOLS%20FOR%20SUSTAINABLE%20APPLICATIONS.pdf.

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The growing concentration of CO2 in the atmosphere and its harmful consequences has led the scientific community to direct its efforts towards sustainable processes. Among the possible approaches, the use of CO2 and alternative solvents are two strategies that are having widespread diffusion. In this work the reuse of CO2 is expressed by using it as a reaction reagent and as trigger to change the physical properties of a catalyst thus facilitating its recovery. As regards the CO2 use as reagent, two catalytic systems have been developed for the conversion of CO2 and epoxides into cyclic ca

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Donaldson, Megan Elizabeth. "Development and application of novel solvents for sustainable reactions and separations." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24749.

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Thesis (Ph.D.)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Charles A. Eckert; Committee Co-Chair: Charles L. Liotta; Committee Member: Christopher W. Jones; Committee Member: Facundo M. Fernandez; Committee Member: Thomas F. Fuller.

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Marus, Gregory Alan. "The application of green chemistry and engineering to novel sustainable solvents and processes." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43755.

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The implementation of sustainable solvents and processes is critical to new developments in reducing environmental impact, improving net efficiency, and securing economic profitability in the chemical and pharmaceutical industries. In order to address the challenge of sustainability, researchers have used switchable solvents for both reaction and separation by utilizing a built-in switch to undergo a step change in chemical and physical properties. This allows us to facilitate reactions in the solvent then activate the switch to enable separation and facile product recovery. Subsequently, we

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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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Wickström, Sofia, and Jessica Danielsson. "Sustainable working capital management : A case study of five successful firms." Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227059.

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With the financial crisis, many firms suffered from liquidity shortages and needed to quickly change their way of working to release capital from the operations. Scholars argue that firms should handle immediate crisis with short-term measures first, and then change the underlying organizational routines to prevent recurrence. The management of working capital has received increased attention amongst corporate managers as a result of the crisis, whereby it is interesting to understand how firms can reduce their working capital in a sustainable way. By using the problem-finding and problem-solv

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Medina-Ramos, Wilmarie. "Water and carbon dioxide for sustainable synthesis and separation of pharmaceutical intermediates." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52915.

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The research projects presented in this thesis are mainly focused toward green chemistry and engineering: developing innovative strategies to minimize waste, improve process efficiency and reduce energy consumption. Specifically, the work was centered on the design and applications of green solvents and processes for the sustainable production of pharmaceuticals. The first project was focused on the use of CO₂ to enhance Suzuki coupling reactions of substrates containing unprotected primary amines. This work established that exceptionally challenging substrates like halogenated amino pyridin

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Fadhel, Ali Zuhair. "Designing for sustainability: applications of tunable solvents, switchable solvents, and catalysis to industrial processes." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39646.

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The focus of this research was to improve the sustainability of various processes by employing tunable solvents, switchable solvents, and catalysis. In Chapter 2, we report applications of tunable solvents to metal and enzyme catalyzed reactions of hydrophobic substrates. Tunable solvents are defined as solvent that change properties rapidly but continuously upon the application of an external physical stimulus and we utilize these solvents to couple homogeneous reactions with heterogeneous separations. We developed organic-aqueous tunable solvents that utilize propane for efficient phase sepa

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Paggiola, Giulia. "Multi-perspective analysis of the applicability of bio-based solvents as sustainable options for biocatalysis." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/15797/.

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Biocatalysis and sustainable solvents are two increasingly popular instruments of the green synthetic toolkit. This thesis explores the use of bio-based solvents in reactions catalysed by Candida Antarctica lipase B, and discusses their greenness and wider applicability. Firstly, to clarify the mechanism of solvent influence on enzyme catalysis, a systematic multi-variable approach is applied for the first time. The results challenge the established theory which relied solely on partition coefficient, logP, revealing that catalytic performance is governed instead by the solvent’s ability to en

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Zaytseva, K. "Methods of formation scenarios for solving the problems of sustainable development of regions." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26817.

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Nora, Perk. "Transformation Towards Sustainable Transportation : Solving the "First and Last-mile" Problem in Europe." Thesis, Blekinge Tekniska Högskola, Institutionen för fysisk planering, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19583.

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The thesis emphasizes the transformation towards sustainable mobility and the role of urban planning for such transformation. The aim of this thesis is to provide a comprehensive overview of different examples of solving the so-called “the first and last-mile problem” (FMLM) (which is conceptualized as a major problem for the transformation towards sustainable forms of travel) which have been tested or implemented in European cities, as well as provide an understanding of the role of the planner in these examples. The following questions were asked: What solutions to the “First and last-mile”

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Song, Ingu. "Role of carbon dioxide in gas expanded liquids for removal of photoresist and etch residue." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26473.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Hess, Dennis; Committee Member: Eckert, Charles; Committee Member: Frazier, Bruno; Committee Member: Henderson, Clifford; Committee Member: Liotta, Charles. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Hunter, Dale. "Facilitation of sustainable co-operative processes in organisations /." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20031107.153926/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, 2003.<br>"A thesis presented to the University of Western Sydney School of Social Ecology and Lifelong Learning in fulfilment of the requirements for the degree of Doctor of Philosophy" "March 2003" Bibliography: 238 - 249.

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Cong, Yongqing. "Sustainable Public Pension System for Florida Local Governments: Financial Solvency, Paradigm Switch, and Interperiod Equity." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1455.

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The issue of increasing unfunded pension liabilities of state and local governments has drawn increasing attentions in the last few years, especially after the 2008 stock market downturn. To maintain sustainability many state and local governments have put public pension reform at the top of their priority list. Previous research and practices provide two strategies to reform the current pension systems: Incremental changes to amend the existing defined benefit plans (DB plans), and the pension model switch from the DB model to defined contribution plans (DC plans). This study aims to uncover

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Ada, Ketchie, Nehe Meret, and Shapira Hila. "For the Creative Problem-Solver : An Integrated Process of Design Thinking and Strategic Sustainable Development." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4208.

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Since the dawn of humanity design has influenced human life. Today, facing the depletion of the socio-ecological system, increasing complex problems threaten humanity’s existence. Design has been a contributor to creating such problems, yet with appropriate tools can become a source for solutions. Design Thinking (DT) was identified as a possible approach that could contribute to Strategic Sustainable Development (SSD). The purpose of this thesis is to examine potential contributors and hindrances of the DT process with regards to SSD, and create a prototype for an integrated process that coul

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Silva, Liliana Cristina Vieira da. "Development of a sustainable method for the extraction of lycopene and β-carotene from food wastes". Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15490.

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Mestrado em Biotecnologia - Biotecnologia Alimentar<br>The main objective of the present work is the study of a profitable process not only in the extraction and selective separation of lycopene and β-carotene, two compounds present in tomato, but also in its potential application to food industry wastes. This is one of the industries that produce larger amounts of wastes, which are rich in high value biomolecules with great economic interest. However, the conventional methods used to extract this kind of compounds are expensive which limits their application at large scale. Lycopene and βcaro

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Hunter, Dale. "Facilitation of sustainable co-operative processes in organisations." Thesis, View thesis, 2003. http://handle.uws.edu.au:8081/1959.7/482.

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This thesis explores the quality and sustainability of facilitated co-operative processes in organisations, and the difficulties and opportunities associated with this way of working. Three complementary research methods have been used: a survey, an Internet dialogue and a co-operative inquiry of facilitators, managers and academics. The survey revealed that facilitators have diverse and sometimes contradictory approaches to their organisational work, co-operative processes are not easy to sustain within hierarchical organisations, and that facilitator ethics need clarification. The developmen

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Nixon, Emily Cummings. "Silanes in sustainable synthesis: applications in polymer grafting, carbon dioxide capture, and gold nanoparticle synthesis." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45847.

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Vinyltrialkoxysilanes are grafted onto polyolefins via a radical mechanism; in a subsequent step, the pendant alkoxysilanes hydrolyze and condense upon exposure to water, resulting formation of crosslinks. Straight chain hydrocarbons were used as model compounds to investigate the regioselectivity of vinyltrimethoxysilane grafting. To stabilize the water-sensitive grafted products, the methoxy groups were substituted using phenyllithium. It was found that this reaction must be carried out for a minimum of three days to ensure full substitution. The grafted products were then separated on a wei

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Mario, Benini. "Improving Decision Making in Real-world Applications by Solving Combinatorial Optimization Problems." Doctoral thesis, Università di Siena, 2022. https://hdl.handle.net/11365/1221594.

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The motivation for this work is to study complex real-world scenarios and provide tools that can actually improve decision-making in those problems. To do so, we mainly adopt techniques from the fields of Operations Research and Combinatorial Optimization. In this dissertation, we focus on three real-world applications from different industries that can be modeled as combinatorial optimization problems and address them with operations research techniques. The dissertation is divided in chapters, each of which is related to a different topic. In Chapter 1, a problem concerning the transportat

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Sacadura, João Arriaga e. Cunha Cabral de. "Consulting to social entrepreneurship initiatives - using business skills to help solve social problems: ERG: a sustainable approach." Master's thesis, NSBE - UNL, 2010. http://hdl.handle.net/10362/10314.

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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics<br>Escolinha de Rugby da Galiza is a Social Entrepreneurship project from Santa Casa da Misericórdia de Cascais that uses an innovative approach to social integrate children from the community of Fim do Mundo. Through the study and analysis of this project, it was identified the need to improve the sustainability approach currently used. A set of proposals were developed to diversify its sources of donations and generate its own revenues in

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Boehme, Michelle. "Towards a tripartite partnership for sustainable development in the Rustenburg platinum region / Michelle Boehme." Thesis, North-West University, 2006. http://hdl.handle.net/10394/158.

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Development has always been problematic especially in the mining sector where it often takes place at a rapid pace. Not only is the physical environment influenced but other aspects such as legislation and the relationship between role players are also influenced. The focus of this thesis is tripartite partnership formation between business, local government and the community for sustainable development in the Rustenburg platinum region. In essence the study was about answering the broad question of "how can one improve the chances of setting up a sound foundation, that in turn can lead to a s

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Fournier, Antoine. "Développement de procédés écoresponsables pour la synthèse de solvants et d'organocatalyseurs biosourcés." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK046/document.

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Les oxazolidinones sont des composés prometteurs pour des applications industrielles, mais aucune méthode ne convient à ce jour pour les produire à large échelle, à cause de l'utilisation de réactifs et de catalyseurs métalliques nocifs pour la santé et l'environnement. Une nouvelle méthode de synthèse de ces composés a donc été élaborée en utilisant des aminoalcools et du carbonate de diéthyle. Cette réaction est catalysée par un hydrogénocarbonate d'imidazolium biosourcé qui est produit par voie électrochimique afin de réduire son impact sur l'environnement.Cette méthode de synthèse d'oxazol

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George, John H. "Preparing Math Deficient University Students for STEM Achievement and Sustainable Learning." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1369580586.

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Lindeberg, Anna, Claudia Dina, Håkan Augustsson, and Mariana Vasileva. "Importance of Leadership Competencies for the Transition to Sustainable Healthcare in Sweden." Thesis, Blekinge Tekniska Högskola, Institutionen för strategisk hållbar utveckling, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20027.

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Our unsustainable way of living has created a precondition for the emergence of more and new illnesses, jeopardizing the overall health of society. The Swedish healthcare system faces complex challenges that threaten its ability to live up to its obligations as stated in the law. It is proven that leaders in public organisations can have a substantial function in leading towards sustainability. Leadership competencies have a big role to play in that journey.This thesis explores the complex challenges administration leaders in the healthcare sector of two Swedish public organisations – Region B

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Mahram, Mona, and Sadegh Shabnam Marboot. "Environmental impact and toxicity of chemicals used at University College of Borås." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19889.

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Spaulding, Jeannette. "Tackling Wicked Problems : The Development of a New Decision-Making Tool, Applied to the Estonian Oil Shale Conundrum." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-226505.

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Wicked problems are a special subset of particularly complex issues that current problem-solving tools fail tofully address. Because of this deficiency, a new tool for evaluating and resolving wicked problems must be developed. Theories such as anti-positivism and systems thinking are explored in order to understand the nature of wicked problems, which are often defined by the involvement of multiple stakeholders as well as non-linear interrelations between various elements of the problem. Although traditional problem-solving methods are inadequate for wicked problems, there are certain tools

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Escárcega, Bobadilla Martha Verónica. "Organometallic compounds and metal nanoparticles as catalysts in low environmental impact solvents." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/9114.

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Durant les darreres dècades, el disseny de processos en el marc de la química sostenible ha anat creixent de forma exponencial. La recerca constant de processos mes benignes amb el medi ambient ha implicat un gran esforç per obtenir millors rendiments mitjançant l'activació de llocs específics, i possant especial èmfasi amb el control de la quimio-, la regio- i la enantioselectivitat, punts crucials per a l'economia atómica. En aquest sentit, els dissolvents juguen un paper crític, i com podrà veure's al llarg d'aquesta memòria..<br/>Aquesta Tesi s'enfoca en l'ús de mitjans de reacció alternat

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Wigum, Kristin Støren. "Human and ecological problem solving through radical design thinking : Analyses and development of design theory and design framework based on long-term human needs and ecological sustainable principles." Doctoral thesis, Norwegian University of Science and Technology, Department of Product Design, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-549.

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Anderson, Pia. "Miljöetiska perspektiv på offentlig upphandling." Thesis, Uppsala universitet, Teologiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425822.

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There are directives for how public procurement should be conducted, in terms of quality,price, non-discrimination, transparency, equal treatment, reasonable requirements and how environmental, social and labor law considerations should be taken into account. Public procurement must also solve societal problems with the aim of achieving the global goals, but despite these guidelines, environmental ethical problems still remain for how a purchaser should prioritize and evaluate between the social, ecological and economic responsibility in public procurement. The purpose was to investigate wheth

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Maccaferri, Cristian. "Valorization and recycling of raw materials through a waste management system, case of study Koinonia Community, Lusaka, Zambia." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13571/.

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This thesis presents the implementation and the optimization of a waste management system (WMS) in the Koinonia community (that is sited in the Chilanga district near Lusaka), showing the challenges that must be faced, implementing a WMS in a developing country. In the first part of the thesis it will be contextualized the waste management in the Zambian economy showing how a diversification involving the it could fit with the needs of the Nation. In the second part it will be treated the waste management hierarchy through the illustration of some European policies (like Circular Economy Packa

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Ferreira, Ana Maria da Conceição. "Ionic liquids aqueous solutions as sustainable solvents in separation processes." Doctoral thesis, 2018. http://hdl.handle.net/10773/24094.

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This work is focused on the development of sustainable and cost-effective solvents and separation processes, particularly by applying aqueous solutions of ionic liquids (ILs). It is shown the potential of ILs aqueous solutions as alternative solvents to extract value-added compounds from biomass, avoiding the use of the commonly applied volatile organic solvents, and their use as phase-forming components of aqueous biphasic systems (ABS) to develop reversible and/or integrated separation platforms. In the first set of results, it is demonstrated the high performance of ILs aqueous solutions t

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林躍龍. "From the perspective of sustainable development to discuss Indigenous community of eco-tourist crossfire and solvent－the example of Atayal Tribe Lunpi community, Datong Hsiang, Yilan County." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/6u28km.

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碩士<br>佛光大學<br>公共事務學系<br>96<br>Abstract The research of contemporary Taiwanese local development has been showed two topics. One is development of community tour and the other is environment maintenance. Since the 921 earthquake, government highly respected maintenance of ecological for preventing disaster due to voice of ecological conservation was up surging and The World Summit on Sustainable Development has took place in South Africa in 2002, the subject is environment and impoverishment. According to author opinion, the research of sustainable development of aborigine community ecological

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Santos, Maria João Martins dos. "Towards solving a robust and sustainable Vehicle Routing Problem with Backhauls." Doctoral thesis, 2020. https://hdl.handle.net/10216/129823.

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Santos, Maria João Martins dos. "Towards solving a robust and sustainable Vehicle Routing Problem with Backhauls." Tese, 2020. https://hdl.handle.net/10216/129823.

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Mara, Setyo Tri Windras, and Setyo Tri Windras Mara. "SOLVING A MULTI-OBJECTIVE SUSTAINABLE LOCATION-ROUTING PROBLEM USING DISCRETE MULTI-OBJECTIVE SINE-COSINE ALGORITHM." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/59r5es.

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碩士<br>國立臺灣科技大學<br>工業管理系<br>107<br>The location-routing problem (LRP) is an emerging area in logistics research which combines two well-known distribution planning tasks: facility location problem (FLP) and vehicle routing problem (VRP). The main goal of planning a distribution network is to obtain a minimum systemwide cost, which resembles companies’ economical objective. However, in order to achieve a more sustainable future, nowadays companies have to start to give attention to the sustainability issue, such as providing workload balance for their employees and producing less emission from t

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Damabi, Roya Mohebbi Pour. "Problem-solving politics : debt, discourse and the International Monetary Fund." Thesis, 2005. http://hdl.handle.net/10413/2684.

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This dissertation aims to problematize the concept (and proposed policy) of "debt sustainability", particularly in relation to those countries classified as "low-income", by attempting to map the logic behind what is presented as neutral, technical fact (i.e., "best practice") and seeing what work this logic does, i.e., what its effects are. Debt sustainability is not a free-floating concept, but one that is operationalized in policy. This means that the outcomes of employing a debt sustainability framework for low-income countries may have tangible consequences; in this way, and most importan

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Craveiro, Rita Paula Paiva. "Engineering bio-based polymers using alternative solvents and processes." Doctoral thesis, 2015. http://hdl.handle.net/10362/17121.

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The work presented in this thesis explores novel routes for the processing of bio-based polymers, developing a sustainable approach based on the use of alternative solvents such as supercritical carbon dioxide (scCO2), ionic liquids (ILs) and deep eutectic solvents (DES). The feasibility to produce polymeric foams via supercritical fluid (SCF) foaming, combined with these solvents was assessed, in order to replace conventional foaming techniques that use toxic and harmful solvents. A polymer processing methodology is presented, based on SCF foaming and using scCO2 as a foaming agent. The SCF

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Tai, Kuo-Kuang, and 戴國銧. "How to Perform Sustainable Management and Solve the Problems It Faces – A Distributing Company." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7svmw2.

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碩士<br>國立交通大學<br>管理學院高階主管管理碩士學程<br>107<br>Bio-Med Industry changes for the better day by day, now with AI, IOT Big Data joining, it advances much more at a tremendous pace. Viewing the high speedy growth globally, within recent years Taiwan Bio-Med Industry have grown rapidly with satisfactory results too under the government’s encouragement using antibodies and cell to gradually cure diseases which before taken as uncured. Also, it is effective for earlier detection and curing. Based on the earlier detection of tau-protein, there makes great process. Bio-Med Industry is surely a good weapon to

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