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- Abbas, Aamer, 1973, et al.
(författare)
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Chemical images of marine bio-active compounds by surface enhanced Raman spectroscopy and transposed orthogonal partial least squares (T-OPLS)
- 2012
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Ingår i: Analytica Chimica Acta. - : Elsevier BV. - 0003-2670 .- 1873-4324. ; 737, s. 37-44
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Tidskriftsartikel (refereegranskat)abstract
- Surface enhanced Raman spectroscopy combined with transposed Orthogonal Partial Least Squares (T-OPLS) was shown to produce chemical images of the natural antibacterial surface-active compound 1,1,3,3-tetrabromo-2-heptanone (TBH) on Bonnemaisonia hamifera. The use of gold colloids function-alised with the internal standard 4-mercapto-benzonitrile (MBN) made it possible to create images of the relative concentration of TBH over the surfaces. A gradient of TBH could be mapped over and in the close vicinity of the B. hamifera algal vesicles at the attomol/pixel level. T-OPLS produced a measure of the spectral correlation for each pixel of the hyperspectral images whilst not including spectral variation that was linearly independent of the target spectrum. In this paper we show the possibility to retrieve specific spectral information with a low magnitude in a complex matrix.
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| 5. |
- Albers, Eva, 1966, et al.
(författare)
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Influence of preservation methods on biochemical composition and downstream processing of cultivated Saccharina latissima biomass
- 2021
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Ingår i: Algal Research. - : Elsevier BV. - 2211-9264. ; 55
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Tidskriftsartikel (refereegranskat)abstract
- Saccharina latissima biomass cultivated along the Swedish west coast was subjected to four different scalable preservation methods after harvest; freezing, sun-drying, oven-drying and ensiling. Freeze-drying and freezing at -80 ?C were also included to provide dry and wet references. The effects of the different preservation methods on the composition of Saccharina biomass (on dry weight, DW, basis), and the recovery as well as properties of high-quality protein, alginate and biogas were evaluated. Sun-drying significantly reduced protein, alginate and fatty acid content of the seaweeds and thereby concentrated ash in the biomass compared to the other methods. Protein/amino acids and fatty acids were significantly concentrated in ensiled biomass, while mannitol and laminarin were reduced compared to the other biomasses. Oven-drying and -20 ?C freezing affected the composition the least, with lower ash content and alterations in some specific amino and fatty acids. Sun-drying and ensiling resulted in significantly lower protein solubility at high pH compared to the other biomasses which translated into the lowest total seaweed protein recovery using the pH-shift process. Highest protein yield was obtained with the freeze-dried reference. Ensiling lead to a significant decrease in the molecular weight of alginate, while sun-drying caused a negative effect on alginate by inducing a shift in the guluronic and mannuronic acids composition of alginate. Sun-drying gave the lowest methane yield in the anaerobic digestion experiments while freezing at -80 ?C gave the highest yield, closely followed by freezing at -20 ?C and ensiling. To conclude, preservation methods must be carefully chosen to protect the valuable component in Saccharina latissima, and to achieve an efficient downstream processing ultimately yielding high quality products as part of a seaweed biorefinery.
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- Carmona, Matthew, et al.
(författare)
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Public space in an age of austerity
- 2019
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Ingår i: Urban Design International. - : Springer. - 1357-5317 .- 1468-4519. ; 24:4, s. 241-259
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Tidskriftsartikel (refereegranskat)abstract
- Through an overview of the decade 2008 to 2017, and looking comparatively across four northern European cities, this paper reflects on the changing nature of public space during these austerity years and on the processes of shaping public spaces. The paper draws from the experiences of London, Copenhagen, Malmo and Oslo to explore processes of the design, development, use and management of public spaces during this period. The evidence suggests that we have witnessed a period of significant innovation, side by side with major challenges to the collective approach to public spaces. This has led to distinct forms of public spaces that for good or ill have multiplied as a result of the trends discussed in the paper, spaces of; expectation; the private/public sphere; spectacle; respite; infrastructure; diversion; income generation; security; the ephemeral city; community control; occupation; disadvantage; and decline. Episodes of changing practice are set out in the paper and cumulatively reveal distinct and significant changes during the austerity era, although not necessarily in the manner that might have been expected. Instead, in these four cities, the impact of austerity seems to have been eclipsed by other evolving and competing public policy goals, and by the evolving range of public space types.
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- Kärrholm, Mattias, et al.
(författare)
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Escalating Consumption and Spatial Planning : Notes on the Evolution of Swedish Retail Spaces
- 2011
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Ingår i: European Planning Studies. - : Taylor & Francis. - 0965-4313 .- 1469-5944. ; 19:6, s. 1043-1059
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this article is to describe and investigate how the Swedish escalation in consumption and restructuring of retail spaces are dealt with in Swedish spatial planning. In the first part of this article, we present a history and an overview of the Swedish retail evolution. The major changes are presented, followed by a short discussion of some main actors in this evolution. In the second part of this article, we focus on policies and the planning process, discussing how the municipalities are expected to fulfil their tasks as the agents responsible for physical planning of commercial centres in the light of the ongoing rapid escalation of retail planning projects. Recent guidelines from the national and regional authorities for improvement of the current situation are analysed. Finally, we discuss recent research maintaining that a new form for project planning is emerging within commercial planning. This new form sometimes bypasses traditional planning practices and thus requires new instruments and organizations for a more effective planning of urban retail.
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- Kärrholm, Mattias, et al.
(författare)
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Spatial resilience and urban planning : Addressing the interdependence of urban retail areas
- 2014
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Ingår i: Cities. - : Elsevier. - 0264-2751 .- 1873-6084. ; 36:1, s. 121-130
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Tidskriftsartikel (refereegranskat)abstract
- In this article we look at examples of three predominant kinds of Swedish retail places – the pedestrianised city centre, the neighbourhood centre and the regional shopping mall – all of which play important (winning or losing) roles in contemporary retail development. This investigation is based on an empirical study of the Malmö region (in southern Sweden) and the findings suggest that the different retail areas are developing independently following the logic of their own business. They have failed to relate their business to the retailscape of the urban region. We also develop spatial resilience as a concept that can be used to acknowledge the interdependence of different retail areas in discussions of urban and regional planning. We argue that more fluid or associative means of stabilisation seem to be overlooked in the present strategies for retail resilience, leaving more classical network stabilization as the only means of choice.
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