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Sökning: db:Swepub > Övrigt vetenskapligt/konstnärligt > Kungliga Tekniska Högskolan > Sveriges Lantbruksuniversitet

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2.
  • Bergström, Roger, et al. (författare)
  • Utbildning och forskning
  • 2016
  • Ingår i: <em>Jaktens historia i Sverige: Vilt – människa – samhälle – kultur</em>. - Stockholm : Liber Hermods. - 9789147112944 ; , s. 291-300
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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3.
  • Bhattacharya, Prosun, et al. (författare)
  • Genesis of arsenic enriched groundwater and relationship with bedrock geology in northern Sweden
  • 2012
  • Ingår i: Metals and related substances in drinking water. - LONDON : IWA PUBLISHING. ; , s. 242-246
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • A growing concern over incidents of widespread human exposure to arsenic (As) from groundwater sources has been noticed during the past three decades. Vaasterbotten county in northern Sweden hosts a large number of sulphide ore deposits and a number of gold deposits are recently discovered. Both are accompanied by elevated arsenic contents. Proterozoic metasediments sandwiched in the bedrock and mixed into the till contains elevated amounts of arsenic as well. During the present study about 80 groundwater samples were collected from dug wells, bore-wells and springs in the Skellefte field in Vasterbotten County in northern Sweden. Data from community environmental offices were also collected and included in the study. Arsenic concentrations were elevated in borewells and wetland springs while none of the dug wells had arsenic contents above 10 mg/l. The highest content seen in borewells was 300 mg/l and in wetland springs 100 mg/l. The As(III)/As(tot) varied largely in borewells while it was mostly above 0.8 in wetland springs indicating more reducing contents in the latter. The use of a redox classification indicated that two nechanisms were involved in the mobilisation of he arsenic, oxidation of sulphides and reduction of ferric oxyhydroxides. In some cases the borewells showed a mixed pattern, indicating inflow from different environments.
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  • Capezza, Antonio Jose (författare)
  • Sustainable Biobased Protein Superabsorbents from Agricultural Co-Products
  • 2020
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The preparation of sustainable protein superabsorbents from agricultural industry side-streams is reported. Wheat gluten (WG), a co-product from the ethanol/starch industry, was processed into foams with sponge-like behavior and high liquid uptake. The materials were obtained by phase-separation of aqueous WG dispersions followed by ambient drying, or by lyophilization. The use of a natural and non-toxic cross-linker (genipin) resulted in foams with high water swelling properties (~18 g/g in 10 min). The rapid swelling may be of use in bio-based foams in e.g., sanitary pads.As an alternative, potato protein concentrate (PPC, side-stream from the starch industry), was functionalized and prepared as particles. The liquid swelling capacity was compared after acylation with five different agents. It is shown that the PPC can be acylated to replicate the chemistry of synthetic superabsorbent polymers (SAP), showing water swelling capacity >10 g/g. The acylation (using EDTAD) of WG suspensions resulted in protein particles with water and saline uptake of 22 and 5 g/g, respectively. Limited network stability was however observed when acylating WG in low-protein suspensions. This was addressed by mixing the acylated protein with genipin, which provided a stable protein network. The process gave functionalized particles with swelling capacity ~40 g/g and ~80 % retention of swelling in centrifuge retention tests.The extrusion of WG showed that porous WG with water uptake of 500 % can be produced. Further, the scalability of PPC production was pilot-tested by functionalizing potato fruit juice (PFJ), containing the potato protein in its soluble state before the industrial drying used to obtain PPC. This resulted in water swelling capacities >10 g/g, which was comparable to the PPC-functionalized materials. The results pave the way for future optimization of high-throughput production techniques using protein sources in mass production of sustainable protein-based SAPs.
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  • Eriksson, Dennis, et al. (författare)
  • Options to Reform the European Union Legislation on GMOs : Scope and Definitions
  • 2020
  • Ingår i: Trends in Biotechnology. - : Elsevier BV. - 0167-7799 .- 1879-3096. ; 38:3, s. 231-234
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • We discuss options to reform the EU genetically modified organisms (GMO) regulatory framework, make risk assessment and decision-making more consistent with scientific principles, and lay the groundwork for international coherence. The first in a threepart series, this article focuses on reform options related to the scope of the legislation and the GMO definition.
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8.
  • Eriksson, Dennis, et al. (författare)
  • Options to Reform the European Union Legislation on GMOs : Risk Governance
  • 2020
  • Ingår i: Trends in Biotechnology. - : Elsevier BV. - 0167-7799 .- 1879-3096. ; 38:4, s. 349-351
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Here, we discuss options to reform the EU genetically modified organism (GMO) regulatory framework, to make risk assessment and decision-making more consistent with scientific principles, and to lay the groundwork for international coherence. We discussed the scope and definitions in a previous article and, thus, here we focus on the procedures for risk assessment and risk management.
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