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Träfflista för sökning "WFRF:(Raut M) "

Sökning: WFRF:(Raut M)

  • Resultat 1-10 av 26
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1.
  • Aad, G., et al. (författare)
  • 2015
  • Tidskriftsartikel (refereegranskat)
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2.
  • Aad, G., et al. (författare)
  • 2014
  • Ingår i: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :11
  • Tidskriftsartikel (refereegranskat)
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3.
  • Aad, G., et al. (författare)
  • 2012
  • swepub:Mat__t (refereegranskat)
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4.
  • Khatibi, Ali, et al. (författare)
  • Structural and mechanical properties of Cr-Al-O-N thin films grown by cathodic arc deposition
  • 2012
  • Ingår i: Acta Materialia. - : Elsevier. - 1359-6454 .- 1873-2453. ; 60:19, s. 6494-6507
  • Tidskriftsartikel (refereegranskat)abstract
    • Coatings of (CrxAl1-x)(delta)(O1-yNy)(xi) with 0.33 less than= x less than= 0.96, 0 less than= y less than= 1 and 0.63 less than= delta/xi less than= 1.30 were deposited using cathodic arc evaporation in N-2/O-2 reactive gas mixtures on 50 V negatively biased WC-10 wt.% Co substrates from different Cr and Al alloys with three different Cr/Al compositional ratios. For N-2 less than 63% of the total gas, ternary (Cr,Al)(2)O-3 films containing less than1 at.% of N forms; as determined by elastic recoil detection analysis. Increasing the N-2 fraction to 75% and above results in formation of quaternary oxynitride films. Phase analyses of the films by X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy show the predominance of cubic Cr-Al-N and cubic-(Cr,Al)(2)O-3 solid solutions and secondary hexagonal alpha-(Cr,Al)(2)O-3 solid solution. High Cr and Al contents result in films with higher roughness, while high N and O contents result in smoother surfaces. Nanoindentation hardness measurements showed that Al-rich oxide or nitride films have hardness values of 24-28 GPa, whereas the oxynitride films have a hardness of similar to 30 GPa, regardless of the Cr and Al contents. Metal cutting performance tests showed that the good wear properties are mainly correlated to the oxygen-rich coatings, regardless of the cubic or corundum fractions.
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5.
  • Simmons, Aaron T., et al. (författare)
  • Environmental consequences of a consumer shift from dairy- to soy-based products
  • 2024
  • Ingår i: Crop and Pasture Science. - : CSIRO Publishing. - 1836-0947 .- 1836-5795. ; 75:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Context. Climate change and water scarcity are global challenges facing humanity. Animal agriculture generates considerable greenhouse gas (GHG) emissions and consumes large volumes of water from rivers, streams and lakes. Reducing consumption of animal agricultural products with a relatively high carbon or water footprint, such as dairy, is often promoted as a mechanism to reduce the environmental impacts of food production. Attributionally-based footprints do not, however, assess the consequences of a change in demand for a product. Aims. This study aimed to assess the water and climate change consequences of replacing NSW dairy production, and co-products of dairy production, with plant-based alternatives. Methods. Process-based consequential life cycle assessment was used. Key results. Water savings associated with the change would be limited and GHG emissions reductions would be ~86% of that as estimated by the carbon footprint of production. When NSW dairy production was replaced with soy-based alternatives and two GHG emissions reduction strategies were implemented across the industry, namely enteric methane inhibitors and flaring methane from effluent ponds, GHG emissions increased by 0.63 Mt carbon dioxide equivalent when dairy production was replaced. Conclusions. The environmental benefits associated with replacing NSW dairy production with plant-based alternatives should not be determined by attributionally-based approaches. Implications. Policies that aim to reduce the environmental impacts of agricultural production need to consider the market effects of a change in demand for products and not rely on estimated impacts of current production.
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6.
  • Staaf, Mikael, 1971- (författare)
  • Structural and conformational studies of bacterial polysaccharides employing NMR spectroscopy
  • 2000
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Methods and approaches for performing structural and conformational analysis of bacterial polysaccharides in solution are described. The structure of one exopolysaccharide from Lactobacillus helveticus and two O-antigens from Escherichia coli have been determined using NMR spectroscopy, chemical degradation and mass spectrometry. This thesis discusses different problems encountered in connection with these structural elucidations, namely, overlap of NMR signals, heterogeneity in the polysaccharide sequence and the configurations of a nonulosonic acid.A conformational analysis of the enterobacterial common antigen (ECA) in the form of a cyclic dodecamer is described. Nuclear Overhauser effects (NOEs) and heteronuclear three-bond coupling constants (3JCH) over the glycosidic linkages were determined and used to calculate proton-proton distances and torsion angles. Residual dipolar couplings were measured in a liquid crystalline medium. These couplings provide orientational information distinct from that contained in the local NOE and 3JCH data. The experimental data were compared to the averaged distances, three-bond proton-carbon coupling constants and C-H vector orientations in a model obtained by molecular dynamics simulations. From a fragment that were in agreement with experimental data, a three-dimensional structure was generated for the cyclic ECA in solution
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7.
  • Khan, B., et al. (författare)
  • Current Progress in Conductive Hydrogels and Their Applications in Wearable Bioelectronics and Therapeutics
  • 2023
  • Ingår i: Micromachines. - : MDPI. - 2072-666X. ; 14:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Wearable bioelectronics and therapeutics are a rapidly evolving area of research, with researchers exploring new materials that offer greater flexibility and sophistication. Conductive hydrogels have emerged as a promising material due to their tunable electrical properties, flexible mechanical properties, high elasticity, stretchability, excellent biocompatibility, and responsiveness to stimuli. This review presents an overview of recent breakthroughs in conductive hydrogels, including their materials, classification, and applications. By providing a comprehensive review of current research, this paper aims to equip researchers with a deeper understanding of conductive hydrogels and inspire new design approaches for various healthcare applications.
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