京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第22345号 / 医博第4586号 / 新制||医||1042(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 上本 伸二, 教授 妹尾 浩, 教授 小西 靖彦 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DGAM

Supply chain management is found to be highly related to collaborations among stakeholders to create successful strategies for the supply chain. To leverage circularity in the textile and clothing industry, successful circular strategies that support the businesses in an economic and environmental manner are key. Through this research, the interconnection and communication between the relationships within the supply chain are found to be the most significant factor. In this qualitative study, the purpose of the research was to investigate how relationships and partnerships in the textile supply chain can affect and enable commercial scale for recycling of textiles-to-textiles. In-depth semi-structured interviews with six key stakeholders in the European textile industry. This study found that relationship characteristics such as trust, communication and strategic values through long-term relationships and key suppliers play an important role in realizing textile-to-textile recycling. Furthermore, findings confirm that the financial aspects are the most prominent condition for textile recycling to improve win-win partnership models to promote key operational conditions. With Europe having a leading position in the textile industry, the research study has geographically limited the empirical scope to solid focus on textile supply chain and business relationships in Italy to provide the study with accurate cluster accusation.

In light of the negative social and environmental impacts of the textile industry, a paradigm shift towards a more circular economy is inevitable. Automated textile sorting embodies a crucial but missing link to connect forward and reverse supply chains for circular economy, however scalability challenges exist. Therefore, the study explores how dynamic capabilities can overcome scalability challenges specific to automated textile sorting pilots in Northwestern Europe to create commercially viable solutions. A single case study using an abductive approach guided by the dynamic capabilities view explores automated textile sorting pilots’ approaches to dynamic capability microfoundations. Primary data include semi-structured interviews, which is complemented by secondary data documents, and both were analysed qualitatively via thematic analysis. The data reveal that known scalability challenges remain and new scalability challenges related to market disruptions exist, such as COVID-19. Scalability challenges are overcome through novel approaches to the microfoundations undergirding dynamic capabilities. These are found to take place in a continuous, overlapping process, and collaboration is found across all dynamic capabilities. As collaboration plays a prominent role, it should be integrated in approaches to dynamic capabilities. This study also adds to the literature on circular economy in the textile industry by confirming that known scalability challenges for automated textile sorting pilots remain, and new scalability challenges are developing in terms of market disruptions. Actors in the automated textile sorting supply chain may use these findings to support efforts to scale up automated textile sorting. For textile industry brands and recyclers, the findings can assess their readiness to participate in the automated textile sorting supply chain and support the achievement of their 2030 goals to use greater volumes of sorted textile waste fractions as feedstocks for their production processes and to be a collaborative member of the used textiles supply chain.

The value consumers attach to their clothing creates a high demand and frequent consumption of fast fashion. This results in the increase of post-consumer textile waste that ends up on landfills, which has a negative impact on the environment. This raises the critical issue of disposal methods and necessary education to create awareness and equip users to contribute to a circular economy that aims to extend the lifecycle of each garment. This study aims to design for the facilitation of a circular economy driven by post-consumer textile waste that encourages sustainable consumption. The short lifecycles of commercial interior due to the influence of societal taste results in the frequent alteration of these interiors, increasing building waste which has a negative environmental impact. This study explores how the lifecycle of an interior environment can be extended through the design principles derived from the design informants identified through the investigation of the theoretical framework, site, precedents, users and programme, and proposed brand. The result is the design of sustainable interior environments that encourages sustainable consumption. The design for multi-use programme allows for users to learn and contribute on various platforms to empower the local community and close the loop for fast fashion to generate a new fashion culture at 012 Central. Through the alteration of the identified interior environments the design intervention aims to reinvigorate the underutilised buildings at 012 Central to support a circular economy driven by post-consumer textile waste. The design intervention aims to provide an informative spatial experience that encourages interaction with space and object, empowering users to contribute to a circular economy driven by post-consumer textile waste. The technical resolution of the proposed design intervention is concerned with the design of sustainable interior environments and components that considers their environmental impact through a closed-loop design approach. / Mini Dissertation (MInt (Prof))--University of Pretoria, 2020. / Architecture / MInt (Prof) / Unrestricted

Content: A novel class of bio-based polymers have been developed within the LIFE BIOPOL European project aiming to replace traditional re-tanning and fat-liquoring products reducing environmental impacts and increasing the safety of leather. The purpose of the project is to enhance the recovery and reuse of different bio-derived by-products from leather and agro-industrial sector to produce eco-friendly and renewable bio-polymers with high re-tanning and fat-liquoring characteristics. The LIFE BIOPOL project aims to make bio-based polymers in order to reduce the following parameters in re-tanning phase: - 20-30% COD, - 50-60% of inorganic salts (Sulphates and Chlorides), - 90% of Cr (III) salts, - 20% of water used in the leather process. Other important goals of the project are: - reduction 70-90% of hazardous and environmental polluting substances normally found in conventional chemicals, - reactivity enhancement of 30-40% of the new biopolymers compared to the current leather - application technology, - reduction of 70-80% of the Product Environmental Footprint of the new biopolymers related to the state of the art. The vegetal biomasses and the tanned hides by-products were pretreated in order to obtain suitable building blocks for the production of bio-based polymers. Several protocols involving polymerization were used in order to achieve the synthesis of the biopolymers, which have been carried out at lab scale. Macromolecular characterization of the biopolymers was performed in order to rationalize the synthetic strategy and practical application of the products giving important parameters such as molecular weight and chemical composition of the new biopolymers. Performances of new bio-based polymers have been inspected and compared with traditional chemicals through application on different types of leather. The benefits of the new products within leather making process were evaluated through chemical analyses of re-tanning and fat-liquoring effluents. The upgrade of the developed chemistry will be performed within a new devised prototype plant specifically designed and built-up for producing the bio-based polymers at industrial scale Take-Away: Production of leather making biopolymers from biomasses and industrial by-products through Life Cycle Designed Processes

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The goal of this diploma thesis is to highlight the properties of cellulose fibers obtained from waste water and the importance of recycling of raw materials. The main objective is then to further explore the possibilities of using cellulose fibers as a valuable product on the market. The practical part of the thesis is focused on specific research of cellulose properties and design of equipment for sewage treatment plant according to its size.

This thesis describes a proposal for a rocker saw design. It addresses the general lack of current solutions, their description and it is drawing conclusions of these. The object of this thesis is to try to avoid potential problems which are being discussed in this thesis and therefore suggests solutions for enhancing the rocker saw, especially on the visual and ergonomic side.

Diplomová práca sa zaoberá novou kvalitatívnou analýzou kolagénových vrstiev pomocou cirkulárneho dichroizmu v pevnej fáze. Teoretická časť opisuje kolagén a jeho sekundárnu štruktúru, spektroskopické metódy cirkulárneho dichroizmu (CD) a zoslabenej úplnej reflektancie (ATR). Experimentálna časť sa zaoberá prípravou homogénnych a transparentných kolagénových filmov a optimalizáciou objemu, koncentrácie a sušenia. Následne sa zmerala a vyhodnotila kalibračná krivka s rôznymi pomermi kolagénu a želatíny. Získaná rovnica lineárnej regresie sa použila na stanovenie obsahu kolagénu v modifikovaných vzorkách. Výsledky hodnotených modifikovaných vzoriek boli porovnané s meraniami ATR spektroskopie. Merania ATR ukázali vyšší obsah kolagénu ako CD merania. Vzorky s najnižším a najvyšším obsahom kolagénu sú pre obe metódy rovnaké. Dokazuje to, že môžme porovnávať vzorky s rôznym obsahom kolagénu navzájom, ale nemôžeme určiť presný obsah kolagénu pripojením týchto dvoch metód. Optimalizovaná metóda CD sa môže použiť na prípravu a meranie presného obsahu kolagénu vo vzorkách, najmä v rámci výroby kolagénu, aby sa dosiahla konštantná kvalita kolagénu v každom kroku výroby.