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  • Lorentzon, Ann
    et al.
    RISE - Research Institutes of Sweden, Bioeconomy.
    Lindström, Annika
    RISE - Research Institutes of Sweden, Bioeconomy.
    Wickholm, Kristina
    RISE - Research Institutes of Sweden, Bioeconomy.
    Williams, Helen
    Karlstad university.
    Wikström, Fredrik
    Karlstad university.
    Förpackningssystem för minskat matsvinn: Slutrapportering del 2 : samverkansprojekt2017Report (Other academic)
    Abstract [sv]

    Matsvinn är en stor global samhällsutmaning. Det är ett komplext problem som kräver samverkan och en mängd lösningar för att lösas. Samverkansprojektet har tittat på hur förpackningssystem kan bidra till att minska det globala samhällsproblemet med matsvinn. Resultatet från projektet manifesteras i de nya förpackningslösningar som tagits fram för projektets tre produkter salsa, salladsmix och risgröt. Lösningarna är utvecklade för att minska matsvinn genom hela kedjan, från fyllning till konsument. Inledande konsumenttester indikerar att lösningarna skulle tas väl emot på marknaden. En förenklad klimatanalys visar på att lösningarna medför minskad miljöpåverkan. Utöver förpackningslösningarna, som tagits fram i fysiska prototyper, har projektet lett till att deltagande parter – genom projektets frekventa samverkan i workshopar, uppföljningsmöten samt studiebesök – fått nya kunskaper och fördjupad förståelse kring utmaningar längs produkternas hela värdekedja.

  • Donnelly, Liam
    et al.
    UCD Forestry, University College Dublin, Ireland.
    Lundqvist, Sven-Olof
    RISE, Innventia.
    O'€™Reilly, Connor
    UCD Forestry, University College Dublin, Ireland.
    Inter-and intra-annual wood property variation in juvenile wood between six Sitka spruce clones2017In: Silva Fennica, ISSN 0037-5330, E-ISSN 2242-4075, Vol. 51, no 4Article in journal (Refereed)
    Abstract [en]

    Increased growth rates have reduced rotation lengths, increasing the proportion of juvenile wood relative to mature wood, which may negatively affect mechanical performance of sawn timber. However, there is limited information available on the potential impact of breeding for vigour on juvenile wood in Sitka spruce (Picea sitchensis (Bong.) CarriÚre). In this study, the relationship between vigour (based on total height) and wood properties was investigated in six-year-old Sitka spruce clones grown in two replicated field trials in Ireland. Six clones were evaluated, two clones from each of three vigour (high, intermediate and low) classes. Discs were cut from the base of one ramet per replication for each clone to assess wood quality attributes. Radial tracheid width was significantly and positively correlated with ring width and height, and was negatively correlated with density. The wood of the most vigorous clone had significantly larger ring width with thinner cell walls and wider tracheids than all clones in the two other vigour classes, resulting in lower mean wood density. Latewood properties for all wood attributes measured differed significantly between the two sites. Wood property differences resulted primarily from variation in the proportions of early- and latewood in each annual ring. Additionally, the width of early- and latewood bands in each ring was found to be a more important determinant of juvenile wood quality than the characteristics of the cells within each band. Wood properties differed greatly between clones, suggesting that there is potential to improve juvenile wood properties through selective breeding.

  • Larsson, Fredrik
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Electronics.
    Mellander, Bengt-Erik
    Chalmers University of Technology, Sweden.
    Lithium-ion Batteries used in Electrified Vehicles – General Risk Assessment and Construction Guidelines from a Fire and Gas Release Perspective2017Report (Other academic)
    Abstract [en]

    This report presents a general and broad risk assessment and construction guidelines for lithium-ion battery systems used in electrified vehicles, from the perspectives of fire and gas release. General types of Li-ion battery systems and electrified vehicles, ranging from light to heavy-duty vehicles, are included. The findings in the report are based on results obtained in the project “Safer battery systems in electrified vehicles – develop knowledge, design and requirements to secure a broad introduction of electrified vehicles”, conducted between the years 2012-2017 and lead by RISE Research Institutes of Sweden. The guidelines focus on both how to design the battery system and on how to integrate and place the battery in the vehicle in order to increase the safety in terms or fire and gas release.

  • Aarstad, Olav
    et al.
    NOBIPOL,NTNU Norwegian University of Science and Technology, Norway.
    Heggset, Ellinor B.
    RISE - Research Institutes of Sweden, Bioeconomy, PFI.
    Pedersen, Ina Sander
    NOBIPOL,NTNU Norwegian University of Science and Technology, Norway.
    Björnöy, Sindre H.
    NOBIPOL,NTNU Norwegian University of Science and Technology, Norway.
    Syverud, Kristin
    RISE - Research Institutes of Sweden, Bioeconomy, PFI.
    Strand, Berit L.
    NOBIPOL,NTNU Norwegian University of Science and Technology, Norway.
    Mechanical properties of composite hydrogels of alginate and cellulose nanofibrils2017In: Polymers, ISSN 2073-4360, E-ISSN 2073-4360, Vol. 9, no 8, 378Article in journal (Refereed)
    Abstract [en]

    Alginate and cellulose nanofibrils (CNF) are attractive materials for tissue engineering and regenerative medicine. CNF gels are generally weaker and more brittle than alginate gels, while alginate gels are elastic and have high rupture strength. Alginate properties depend on their guluronan and mannuronan content and their sequence pattern and molecular weight. Likewise, CNF exists in various qualities with properties depending on, e.g., morphology and charge density. In this study combinations of three types of alginate with different composition and two types of CNF with different charge and degree of fibrillation have been studied. Assessments of the composite gels revealed that attractive properties like high rupture strength, high compressibility, high gel rigidity at small deformations (Young’s modulus), and low syneresis was obtained compared to the pure gels. The effects varied with relative amounts of CNF and alginate, alginate type, and CNF quality. The largest effects were obtained by combining oxidized CNF with the alginates. Hence, by combining the two biopolymers in composite gels, it is possible to tune the rupture strength, Young’s modulus, syneresis, as well as stability in physiological saline solution, which are all important properties for the use as scaffolds in tissue engineering.

  • Skagestad, Ragnhild
    et al.
    Tel-Tek, Norway.
    Normann, Fredrik
    Chalmers University of Technology, Sweden.
    Gardarsdottir, Stefania Osk
    Chalmers University of Technology, Sweden.
    Sundqvist, Maria
    RISE - Research Institutes of Sweden, Swerea, Swerea MEFOS.
    Anheden, Marie
    RISE, Innventia. RISE - Research Institutes of Sweden, Bioeconomy.
    Eldrup, Nils H.
    HSN, Norway.
    Ali, Hassan
    HSN, Norway.
    Haugen, Hans Aksel
    Tel-Tek, Norway.
    Mathisen, Anette
    Tel-Tek, Norway.
    CO2stCap - Cutting Cost of CO2 Capture in Process Industry2017In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 114, 6303-6315 p.Article in journal (Refereed)
    Abstract [en]

    This paper is a presentation of the CO2stCap project to be undertaken in the four year project period (2015 - 2019). The project focuses on partial CO2 capture in process industry and how this can be applied to reduce cost. By performing techno-economic analyses, the optimal capture rate, including optimal design, application and configuration for different industry sources can be obtained. Cost estimation methods are used as a basis to identify and verify potentials for cost reduction when applying different options for implementation of partial CO2 capture. CO2stCap. Industries studied in this project are pulp & paper, steel, cement and metallurgical production of silicon for solar cells.

  • Vermina Lundstrom, Frida
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Sjöström, Johan
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Lärdomar från inträffade vegetations-bränder under vinterhalvåret2017Report (Other academic)
    Abstract [en]

    Although wildland fires are not common during the cold season in the Nordic countries, there is a risk for uncontrolled spread. This was proved during a mild winter in Norway in 2014, when three large fires occurred. Therefore, a fire weather forecast running during winter time could provide the rescue service with knowledge on the risk of spreading fires. In this report, data from previous fires is gathered to gain knowledge on how to modify a risk index for fire weather during the Swedish winter.

  • Li, Dan
    et al.
    Chalmers university of technology.
    Fast-Berglund, Åsa
    Chalmers university of technology.
    Gullander, Per
    RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
    Ruud, Lars
    Identifying Improvement Areas in Production Planning Meetings by Assessing Organisation and Information Systems at a Small Production Company2016Conference paper (Refereed)
    Abstract [en]

    The increased mass-customisation of production requires operators to manage an increasing number of complex work tasks. From a social sustainability perspective, better sharing and dissemination of production information supports operators cognitively to manage and understand their work tasks, which in turn improves quality of work. So, the focus of this paper is to study how production planning meetings can be improved. Previous research suggests that the MEET model can be used as a framework for improving meetings and information sharing by studying 10 different areas within a company’s Organisation System (OS) and Information System (IS) whilst considering the time and place prerequisites and aims for these meetings. In this paper, the applicability of the MEET model and its 10 areas are tested at a small production company by applying two different approaches. First, a questionnaire was presented to and filled out by a manager, the results of the questionnaire identifies the improvement potential of each of the 10 areas. Second, a comprehensive current-state analysis based on observations on the shop-floor and interviews with operators were carried out with regards to the 10 areas. The results from these two approaches were compared and the comparison showed that both approaches point towards similar areas for potential improvements. This paper concludes that the MEET model can be used as a general framework to inspire change by suggesting areas with potential improvement in information sharing. While the selfassessment questionnaire can identify a direction, additional information and involvement of other stakeholders are recommended for actual implementations of change. For future research, the methods based on the MEET model will be further developed to improve accuracy and the suggestions provided to the case company in this paper will be tested as a validation of the model.

  • Engström, Jonas
    et al.
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Lagnelöv, Oscar
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Batteridriven autonom jordbruksmaskin: Simulering av maskinaktiviteter på en svensk gård2017Report (Other academic)
    Abstract [en]

    In the project "Concept study battery-powered autonomous agricultural machine", an electric autonomous agricultural machine has been compared with a conventional diesel tractor by simulating all machine activities in a field on an organic dairy farm of 200 hectares during one year. Combine Harvesting was not included.

    The results show that it is possible to replace a conventional tractor (160 kW) with two autonomous battery-powered machines (36 kW engine, 113 kWh battery) with 15% lower costs. Even better, energy consumption was reduced by 58% and greenhouse gas emissions by 92% compared to diesel when energy consumption and greenhouse gas emissions from battery manufacturing were included.

    Furthermore local emissions were avoided and the sound pollution greatly reduced.  The major efficiency increase can be explained by the higher efficiency of electric power drivelines, and that the Swedish and Nordic electricity mix has very low greenhouse gas emissions and environmental impact. We also see that the weight of the conventional diesel tractor is more than four times the weight of the autonomous battery-powered, and that's only the tractor without any implements or payload. In the sensitivity calculations, changes in the cost of implements or driver / operator costs have the greatest impact on the total price. It is also important not to have a charger with low power, while the battery price does not have such big impact on the total cost.

    Continued research is needed to verify the theoretical simulation by building a test platform where knowledge can be gathered about the problems and opportunities in practical work - both in the field of battery-electric operation and autonomous driving.

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