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“Waste prevention is one of those difficult things” - An interview study in collaboration with the Översta steget project on Skåne municipalities choice to work with waste preventionBendahl, Linn, Karlsson, Elin January 2017 (has links)
Fördelarna med att förebygga avfall har visat sig vara många; besparingar i pengar och resurser, förbättrad arbetsmiljö etc. Trots det har utvecklingen gått trögt och få kommuner har prioriterat avfallstrappans översta steg. Under 2017 startades coachningsprojektet Översta steget för att få fler kommuner i Skåne att arbeta med förebyggande av avfall. Fokus ligger på kommunernas egna verksamheter. Inbjudan till projektet har gått ut till alla Skånes 33 kommuner men endast 4 har valt att delta. I studien har 13 kommuner intervjuats om deras beslut angående projektet samt om förebyggande av avfall i stort. Vi har identifierat tre huvudkategorier av hinder; kommunikativa hinder, organisatoriska hinder och hinder som rör vårt ekonomiska system. Förebyggande av avfall är på grund av att det är ett nytt arbetsområde inte lika konkret som återvinning och därmed svårkommunicerat. Det som har lockat kommuner att delta är de ekonomiska besparingar som kan göras samt att projektet erbjuder stöd i arbetet. Även förbättrad miljöprestanda lockar sekundärt. Vi anser att resultaten och fördelarna med att förebyggande av avfall måste spridas smart i olika typer av nätverk för att få igång samtalet kring förebyggande av avfall. På så sätt kan idéerna även konkretiseras och göras mer lättmottagliga för verksamheter och personal. / The advantages of preventing waste have proven to be many: savings in money and resources, improved work environment, etc. Despite this, development of waste prevention has been slow, and few municipalities have prioritized the top step of the waste management hierarchy. In 2017, the coaching project, Översta steget, was initiated to get more municipalities in Skåne to work on waste prevention. The project focus was on the municipalities' own activities. All of Skåne’s 33 municipalities in Skåne were invited to the join the project, but only 4 have chosen to participate. In the present study, 13 municipalities have been interviewed about their decisions regarding the project in general and waste prevention in particular. We have identified three main categories of obstacles; communicative barriers, organizational barriers and obstacles connected to our economic system. Prevention of waste is, because it is new area of work, not concrete enough and difficult mediated/experienced difficult. What has tempted the municipalities to participate in the project is the economic savings that can be made and that the project offers coaching. Improved environmental performance also is a secondly reason. We believe that the results and benefits of waste prevention must be spread smartly across different types of networks in order to initiate the call on prevention. This way it can also be more concrete and made more receptive to municipalities and their staff.
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Právní úprava nakládání s odpady / Legal regulation of waste disposalMichálková, Tereza January 2014 (has links)
The thesis deals with waste management. The aim of the thesis is to describe and evaluate present waste legislation including amendmets to several waste management institutions and comparison to waste legislation of European Union. The thesis is divided into eight chapters. The first chapter focuses on introducing into general range of waste management. The second chapter deals with sources of law, both national and international. The third chapter describes the central term of waste management and of the thesis, i. e. waste, and presents its definition, exceptions from the definition and exception from regulation of the Waste Act 185/2001. The fourth chapter focuses on the waste hierarchy and explains it. The fifht chapter includes the waste management plans, and presents them in accordance with their importance in the hierarchy of waste management plans. The chapter explains content and meaning of the waste management plans. The sixth chapter refers subjects to the obligations given by Waste Act . At the end of the sixth chapter author mentions the matter of legal liability in case of the subjects being in breach of the obligations. The seventh chapter deals with all operations with waste, and divides them into waste prevention, means of waste handling according to waste hierarchy and other waste...
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Synthesis of NIR-emitting InAs-based core/shell quantum dots with the use of tripyrazolylarsane as arsenic precursorTietze, Remo, Panzer, Rene, Starzynski, Thorben, Guhrenz, Chris, Frenzel, Florian, Würth, Christian, Resch-Genger, Ute, Weigand, Jan J., Eychmüller, Alexander 02 May 2019 (has links)
Tris(3,5-dimethylpyrazolyl)arsane (1) is introduced as an low-cost and convenient to handle arsenic precursor for the straight forward synthesis of InAs quantum dots (QDs). Transamination of 1 with the solvent oleylamine (OLAH) gives trioleylarsane (As(OLA)3) which in the presence of the reducing agents DIBAL-H or P(OLA)3 yields InAs QDs via a typical hot injection approach. The size of the obtained InAs core QDs are tuned by varying the reaction time, the amount of the applied reducing agent, or even more effectively by changing the indium and/or zinc halide precursors, InX3 and ZnX2 (Cl, Br, or I). Passivation of the resulting InAs particles with a protective ZnS or ZnSe shell results in improved photoluminescence (PL) of the core/shell QDs covering a spectral range between 600–1150 nm.
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Disposing the future : An institutional analysis of municipal food waste prevention in SwedenOnn, Beatrice January 2021 (has links)
Food waste is a complex issue with environmental, social, and economic consequences. Approximately one third of the food produced for human consumption is annually wasted and the need to prevent food waste is discussed in the public debate, policy outcomes, and sustainable development goals. Food waste prevention is complex and need to be practiced all along the food supply chain. In Sweden, municipalities are self-governing entities that have been assigned the formal responsibility to prevent food waste among households and municipal functions. However, the distributed responsibility and complexity around food waste prevention entail various barriers to successfully implement food waste prevention strategies. The purpose of this study is thus to investigate how institutions influence municipal food waste prevention. The study is inspired by an ethnographic approach and is founded on an empirical material consisting of 137 waste plans and 10 interviews with municipal and public authority representatives. An institutional perspective is applied to understand how institutions influence municipal food waste prevention. The results from the analysis conclude that a) food waste prevention strategies in Sweden construct the consumer as the main cause of food waste generation; b) the institutionalized freedom of choice is perceived as a barrier to implement stronger food waste prevention strategies such as regulation or legislation; and c) institutions offer an important component to understand the construction of the problem around food waste prevention. / Matsvinn är ett komplext problem som påverkar miljö, samhälle och ekonomi. Av den mat som årligen produceras för mänsklig konsumtion slängs ungefär en tredjedel, och behovet av förebyggande åtgärder mot matsvinn blir alltmer uppmärksammat genom samhällsdebatten, policy, och hållbarhetsmål. Förebyggande av matsvinn är komplext och åtgärder för att minska matsvinn är nödvändiga längs hela livsmedelkedjan. Sveriges kommuner är självstyrande och har blivit delegerade det formella ansvaret att förhindra matsvinn i hushåll och kommunala funktioner. Att implementera strategier för att förebygga matsvinn är dock ett komplext arbete med delat ansvar som möter många barriärer. Syftet med denna studie är därför att undersöka hur institutioner påverkar kommunalt matsvinnsförebyggande. Studien är inspirerad av en etnografisk ansats och baseras på ett empiriskt material bestående av 137 avfallsplaner och 10 intervjuer med kommunala och statliga representanter. Ett institutionellt perspektiv är anammat för att förstå hur institutioner influerar kommunalt avfallsförebyggande. De tre viktigaste slutsatserna från resultatet visar att a) strategier för att förebyggande matsvinn konstruerar konsumenten som den främsta orsaken till att matsvinn uppstår; b) en institutionaliserad valfrihet uppfattas som en barriär för att implementera hårda åtgärder så som lagstiftning och reglering; och c) institutioner utgör en viktig förklarande komponent för att förstå hur problemet kring matsvinn konstrueras.
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Reducing fabric consumption : by improving marker efficiencyWidanalage, Varuna Lasantha Kumara, Kizilirmak, Serkan January 2020 (has links)
Resource degradation is a significant problem in the world, which is directly related to the textile and fashion industry. Efficient use of the material has been identified as an essential aspect to be addressed seriously. It is a critical topic that has attracted the attention of people and companies in recent years and has become a fundamental issue of sustainability. This research study was based on UN sustainable development goals number 12 and 8, which focuses on resource efficiency. The research is designed in considering fabric consumption, which has a significant impact on the textile and clothing industry to contribute to a brighter future and a more sustainable life. The purpose of this study is to reduce the fabric consumption through improving marker efficiency. The research focuses on investigating the behaviour of marker efficiency concerning usable fabric widths, markers with different sizes and marker with style combinations to reduce fabric consumption. The improvements of the existing markers lead to reduce fabric wastage during the cutting process while improving resource efficiency in consumption and production. In this study, the explanatory sequential design of mixed research method is employed with carrying out experiments to collect and analyze quantitative data, explained and elaborated with qualitative findings through expert interviews to get insights into the quantitative findings in a deductive approach. The marker efficiency significantly varies according to the combination of sizes and style and usable fabric width. The improvements of the marker efficiency, reduce the fabric consumption per garment and increase resource efficiency while preventing waste generation. A saving of 1% of a material which consumed millions of tons per year, significantly affect on reducing resource depletion and environmental pollution. This study is limited to five usable fabric widths, four size marker combinations and two style combinations. Moreover, it is focused on material efficiency, and cost efficiency is not considered. There are possibilities for clothing manufactures’ to improve resource efficiency by improving marker efficiency while planning the demand, considering multi-size and multi-style markers. They can concern usable fabric widths, which provide higher marker efficiencies during material purchasing.
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Food Waste Diversion Programming in Post-Secondary EducationAlattar, Manar Arica 30 March 2018 (has links)
The urgent need for reform of USA and global food systems is evident in the pervasiveness of both food waste and food insecurity. Such an inefficient system strains the environmental, social, and economic systems on which it relies. Although policy and infrastructure changes are essential, consumers can play a significant role by decreasing their food waste, given that consumer waste represents 60% of the waste along the food cycle in developed countries. Incorporation of food literacy and food waste education in school curricula may provide a meaningful entry point for promoting food waste reduction skills.
This dissertation presents context on the suitability of food systems for science and climate change education. Practical implementation of this concept is then explored through a survey of 495 students at Portland State University that presents the reported knowledge, attitudes, emotions, and beliefs related to food waste. The underlying factors that influence student food waste behavior and intent to change such behavior are likewise explored. I also provide a description and assessment of a food waste diversion program, No Scrap Left Behind, that was developed and piloted at PSU.
I found that knowledge, attitudes, emotions, beliefs, and reported food-related behaviors were generally positive. Students were also interested in taking action and perceived that their food-related actions could make a difference. Intent to change food waste behaviors was influenced by: 1) sustainability actions, 2) food waste diversion actions, 3) attitudes about composting, 4) composting, 5) reported household food waste, 6) material reuse attitudes. Reported food waste diversion behaviors were related to: 1) intent to reduce food waste, 2) knowledge and attitudes towards composting, and 3) attitudes about reuse.
The measures of reported knowledge, attitudes, emotions, beliefs, and behaviors were not significantly influenced by No Scrap Left Behind programming, but actual measured food waste was decreased by one-fourth both over an academic year and within an academic term of programming. This indicates that students are amenable to food waste behavior change when given the encouragement and infrastructure to make that change. Further research may consider opportunities for food waste education beyond the cafeteria setting, particularly as an entry into more complex discussions around environmental, social, and economic systems and concepts.
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Versatile Tri(pyrazolyl)phosphanes – Application as phosphorus precursors for the synthesis of highly emitting InP/ZnS quantum dotsPanzer, Rene, Guhrenz, Chris, Haubold, Danny, Hübner, Rene, Gaponik, Nikolai, Eychmüller, Alexander, Weigand, Jan J. 29 August 2018 (has links)
Tri(pyrazolyl)phosphanes (5R1,R2) are utilized as an alternative, cheap and low-toxic phosphorus source for the convenient synthesis of InP/ZnS quantum dots (QDs). From these precursors, remarkably long-term stable stock solutions (>6 months) of P(OLA)3 (OLAH = oleylamine) are generated from which the respective pyrazoles are conveniently recovered. P(OLA)3 acts simultaneously as phosphorus source and reducing agent in the synthesis of highly emitting InP/ZnS core/shell QDs. These QDs are characterized by a spectral range between 530–620 nm and photoluminescence quantum yields (PL QYs) between 51–62%. A proof-of-concept white light-emitting diode (LED) applying the InP/ZnS QDs as color conversion layer was built to demonstrate their applicability and processibility.
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Plýtvání potravinami v USA jako otázka tvorby federální politiky / Food Waste in the United States as an Issue of Federal Public Policy MakingHlaváčková, Anna January 2020 (has links)
The Master's thesis "Food Waste in the United States as an Issue of Federal Public Policy Making" analyzes the role of the federal government in dealing with food waste. It mainly focuses on federal legislation, but it also examines actions on the state level to illustrate the contrast between the two. In the thesis, the author examines the causes and sources of food waste, federal jurisdiction for intervention, and the history of passed legislation, as well as proposed legislation, and solutions. The main goal of the thesis is to demonstrate that federal involvement is fundamental in achieving any significant change, but so far has failed to do so. Primary literature consisting largely of bills, materials published by federal agencies, and reports by non-profit organizations were used to uncover the character of passed legislation. Academic secondary literature in the form of articles, reports, and factsheets offered context to understand the scope and impacts of the legislation. Analysis of those sources revealed federal authority to deal with the issue, as well as possible obstacles standing in the way of an extensive federal intervention. Research also showed that in the absence of federal action, some states have stepped up to introduce legislation to reduce food waste, but this legislation is...
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Responsabilidade compartilhada pelo ciclo de vida do produto na cadeia de resíduos eletroeletrônicos / Product lifecycle shared responsibility in the supply chain of waste electrical and electronic equipmentMendes, João Múcio Amado 26 March 2015 (has links)
O objetivo do presente trabalho consistiu na análise jurídica da responsabilidade compartilhada pelo ciclo de vida do produto (RCCVP) e suas principais implicações na cadeia de resíduos eletroeletrônicos, no contexto brasileiro da Política Nacional de Resíduos Sólidos, instituída pela Lei Federal n. 12.305/2010 (PNRS). A análise desenvolvida compreendeu os principais deveres relacionados à prevenção de resíduos e à logística reversa, com um enfoque especial na gestão integrada de resíduos eletroeletrônicos. Baseada nos princípios do poluidor-pagador, da cooperação, da prevenção e da precaução, a RCCVP impõe à cadeia de suprimentos a priorização de medidas de prevenção e redução de resíduos por meio de uma concepção ecológica (ecodesign) para produtos e embalagens, bem como pelo reaproveitamento de materiais residuais como insumos, seja em seu próprio ciclo, seja em outros ciclos produtivos, inclusive mediante sistemas de logística reversa e coleta seletiva, estendendo a responsabilidade do berço ao berço e flertando com um modelo econômico circular. Com vistas a desestimular a estratégia da obsolescência planejada de qualidade, a relevante informação sobre o tempo de vida útil de cada produto durável, em especial a dos eletroeletrônicos, deverá ser ampla e obrigatoriamente prestada pela cadeia produtiva, para que os consumidores, uma vez informados e esclarecidos sobre a sua durabilidade objetivamente aferida, tenham condições reais de exercer, na prática, o seu direito e ao mesmo tempo dever de efetuar escolhas de consumo (ou desconsumo), da maneira mais consciente possível, inclusive sob a perspectiva ecológica. No momento, encontra-se em andamento no país o processo de construção de acordo setorial de abrangência nacional para implementação da logística reversa de eletroeletrônicos de uso doméstico, inclusive os provenientes do setor de telefonia móvel. / The aim of this work was the legal analysis of product lifecycle shared responsibility and its implications in the supply chain of waste electrical and electronic equipment (WEEE), within the scope of the Brazilian National Solid Waste Policy, established by Federal Law 12,305/2010. The analysis encompassed the main duties related to waste prevention and reverse logistics, with a particular focus on the WEEE integrated management. Based on the principles of polluter pays, cooperation, prevention and precaution, the product lifecycle shared responsibility requires the supply chain to prioritize waste prevention and reduction measures through an eco-design approach for products and packaging, as well as the reuse of waste materials as inputs, either in its own cycle, or in other production cycles, including through reverse logistics systems and selective collection, extending responsibility \"cradle to cradle\" and flirting with a circular economic model. In order to discourage the planned obsolescence strategy, the relevant information about the lifetime of each durable product, especially of electronics, should be comprehensive and mandatorily provided by the production chain, so that consumers, once informed and enlightened about its durability objectively measured, have actual ability to exercise in practice their right and duty at the same time to make consumer choices (or non-consumption), the most sensible way possible, even from the ecological point of view. Procedure for implementation of consumer WEEE take-back systems with a national scope, through preparation of Sector Agreement, is currently in progress in Brazil, including those from mobile industry.
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Responsabilidade compartilhada pelo ciclo de vida do produto na cadeia de resíduos eletroeletrônicos / Product lifecycle shared responsibility in the supply chain of waste electrical and electronic equipmentJoão Múcio Amado Mendes 26 March 2015 (has links)
O objetivo do presente trabalho consistiu na análise jurídica da responsabilidade compartilhada pelo ciclo de vida do produto (RCCVP) e suas principais implicações na cadeia de resíduos eletroeletrônicos, no contexto brasileiro da Política Nacional de Resíduos Sólidos, instituída pela Lei Federal n. 12.305/2010 (PNRS). A análise desenvolvida compreendeu os principais deveres relacionados à prevenção de resíduos e à logística reversa, com um enfoque especial na gestão integrada de resíduos eletroeletrônicos. Baseada nos princípios do poluidor-pagador, da cooperação, da prevenção e da precaução, a RCCVP impõe à cadeia de suprimentos a priorização de medidas de prevenção e redução de resíduos por meio de uma concepção ecológica (ecodesign) para produtos e embalagens, bem como pelo reaproveitamento de materiais residuais como insumos, seja em seu próprio ciclo, seja em outros ciclos produtivos, inclusive mediante sistemas de logística reversa e coleta seletiva, estendendo a responsabilidade do berço ao berço e flertando com um modelo econômico circular. Com vistas a desestimular a estratégia da obsolescência planejada de qualidade, a relevante informação sobre o tempo de vida útil de cada produto durável, em especial a dos eletroeletrônicos, deverá ser ampla e obrigatoriamente prestada pela cadeia produtiva, para que os consumidores, uma vez informados e esclarecidos sobre a sua durabilidade objetivamente aferida, tenham condições reais de exercer, na prática, o seu direito e ao mesmo tempo dever de efetuar escolhas de consumo (ou desconsumo), da maneira mais consciente possível, inclusive sob a perspectiva ecológica. No momento, encontra-se em andamento no país o processo de construção de acordo setorial de abrangência nacional para implementação da logística reversa de eletroeletrônicos de uso doméstico, inclusive os provenientes do setor de telefonia móvel. / The aim of this work was the legal analysis of product lifecycle shared responsibility and its implications in the supply chain of waste electrical and electronic equipment (WEEE), within the scope of the Brazilian National Solid Waste Policy, established by Federal Law 12,305/2010. The analysis encompassed the main duties related to waste prevention and reverse logistics, with a particular focus on the WEEE integrated management. Based on the principles of polluter pays, cooperation, prevention and precaution, the product lifecycle shared responsibility requires the supply chain to prioritize waste prevention and reduction measures through an eco-design approach for products and packaging, as well as the reuse of waste materials as inputs, either in its own cycle, or in other production cycles, including through reverse logistics systems and selective collection, extending responsibility \"cradle to cradle\" and flirting with a circular economic model. In order to discourage the planned obsolescence strategy, the relevant information about the lifetime of each durable product, especially of electronics, should be comprehensive and mandatorily provided by the production chain, so that consumers, once informed and enlightened about its durability objectively measured, have actual ability to exercise in practice their right and duty at the same time to make consumer choices (or non-consumption), the most sensible way possible, even from the ecological point of view. Procedure for implementation of consumer WEEE take-back systems with a national scope, through preparation of Sector Agreement, is currently in progress in Brazil, including those from mobile industry.
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