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Visar resultat 11 - 15 av 149 avhandlingar som matchar ovanstående sökkriterier.

  1. 11. Repair or replace? Guidance from indicators and life cycle assessment on circular economy strategies for energy-using products

    Författare :Adeline Jerome; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; use extension; indicator; environmental assessment; life cycle assessment; circular economy;

    Sammanfattning : Various circular economy (CE) strategies, such as use extension with repair or reuse, have been suggested as a means for addressing the increasing resource and environmental footprint of society. To identify effective CE strategies, companies or policy makers seek guidance from the evaluation of resource use and environmental impact of alternatives that introduce different CE strategies to product systems. LÄS MER

  3. 12. Macroscale Modelling of 3D-Woven Composites: Inelasticity, Progressive Damage and Final Failure

    Författare :Carolyn Oddy; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D-woven composites; Anisotropy; Damage; Inelasticity; Phase-field; Failure;

    Sammanfattning : Composites with 3D-woven reinforcement have been slowly making their way into different industrial applications. The interlacement of yarns, not only in-plane but also through-thickness, means that in many applications 3D-woven composites can outperform their laminated counterparts. LÄS MER

  4. 13. Millimeter-wave Communication and Radar Sensing — Opportunities, Challenges, and Solutions

    Författare :Sining An; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dynamic; BiCMOS; OFDM; synchronization; Millimeter-wave; range accuracy; radar; communication system; micrometer; high data rate; frequency divider; wideband; phase modulated; monitoring; carrier recovery; distance measurement; mobile network; sensing; fast Fourier transformation FFT .; SiGe;

    Sammanfattning : With the development of communication and radar sensing technology, people are able to seek for a more convenient life and better experiences. The fifth generation (5G) mobile network provides high speed communication and internet services with a data rate up to several gigabit per second (Gbps). LÄS MER

  5. 14. Frame dynamics and stakeholders in risk governance

    Författare :Beatrice Bengtsson; Research Policy Institute (RPI); []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; GMOs; framing; EU; stakeholders; expertise; governance rationalities; policy; feed; boundary framing; frame extension; intertextuality; food chain; participation; EFSA; DG SANCO; risk assessment; risk management; threshold; risks.;

    Sammanfattning : The EU governance of food safety and GM food and feed has gone through significant changes since the BSE crisis and food scares during the 1990s. This work focuses on one particular new feature; the role of stakeholders representing the food chain: biotech associations, farmer organizations, food and feed processors, consumer organizations and environmental NGOs. LÄS MER

  7. 15. Extension of PC-SAFT to model inhomogeneous and transport properties

    Författare :Gulou Shen; Georgios Kontogeorgis; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

    Sammanfattning : CO2 separation plays an important role in greenhouse gas emission mitigation, in bio-fuel production via biomass gasification as well as in biogas upgrading. The current CO2 separation technologies are energy intensive, and new cost-effective CO2 separation technologies are needed. LÄS MER