| 11. |
- Abraham, Nerilie, et al.
(författare)
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The third phase of the PAGES 2k network
- 2017
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Ingår i: Past Global Changes Magazine. - : Past Global Changes (PAGES). - 2411-605X .- 2411-9180. ; 25, s. 71-74
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The past 2000 years (the “2k” interval) provides critical context for our understanding of recent anthropogenic forcing of the climate, as well as baseline information about Earth’s natural climate variability. It also provides opportunities to improve the interpretation of paleoclimate proxy observations, and to perform out-of-sample evaluation of the climate and earth system models that are used to generate projections of future climate change
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| 12. |
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| 13. |
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| 14. |
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| 15. |
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| 16. |
- Marcano, Laura, et al.
(författare)
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Towards Effective Automatic Feedback for Simulator Training
- 2017
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Ingår i: Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58)Reykjavik, Iceland, September 25th – 27th, 2017. - : Linköping University Electronic Press. - 9789176854174 ; , s. 203-208
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Konferensbidrag (refereegranskat)abstract
- The presence of an expert instructor during simulator training is of great importance for the trainees, if not indispensable. The instructor’s role is to give feedback and guide the trainees to help them make the right decisions on time as effectively as possible. The instructor starts or pauses the training scenarios when needed and facilitates reflection during and after the scenarios. However, the fact that simulator-training sessions are very dependent on the participation of a guiding instructor can be a drawback, since there are not always sufficient expert instructors to fulfil the training demands. In this work, an intelligent tutoring system (ITS) is proposed as an automatic feedback solution for simulator training. It is based on effective assessment of the system conditions using a clustering based anomaly detection technique as a core component. Furthermore, we provide insights into the design of a proper interface for our ITS. The article presents the methodology for developing such a system which consists of three stages: data collection, data analysis and delivering feedback.
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| 17. |
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| 19. |
- Souza Filho, Pedro, 1990-
(författare)
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Fungi-based biorefinery model for food industry waste : progress toward a circular economy
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The food industry, one of the most important industrial sectors worldwide, generates large amounts of biodegradable waste with high organic load. In recent years, the traditional management methods to treat this waste (e.g., landfilling) have been considered not suitable because they do not exploit the potential of the waste material. Alternatively, valorization of food industry waste via a biorefinery model using filamentous fungi is considered to represent an attractive strategy because it minimizes the negative impacts while recovering the nutrients and energy of the waste, in accordance with the concept of the circular economy.In this thesis, four food processing wastes were utilized as case studies: potato protein liquor (PPL, the soluble fraction of potato starch production waste), the peels wasted during orange juice production, the starchy byproduct of pea protein processes, and the wastewater of a wheat-starch plant. Rhizopus oryzae, a zygomycetous filamentous fungus, was grown with these wastes as a substrate, yielding biomass containing 43% (w/w) protein together with 51% removal of the chemical oxygen demand when cultivated in tenfold-diluted PPL. Moreover, protein-rich biomass was produced using the pea-processing byproduct (55%) and wheat-starch wastewater (51%). In contrast, cultivation in orange peel extract yielded a biomass rich in lipids (20%). The use of PPL was also studied in terms of the economy of fungal cultivation. The biotreatment was found to require only 46% of the capital investment necessary for treating PPL by the traditional strategy (application as fertilizer). In comparison, the ascomycetous fungus Aspergillus oryzae yielded superior results compared to those of R. oryzae when grown in the starchy residues. The high protein content of the fungal biomass encouraged the investigation of its use for bioplastic production. The addition of 20% fungal biomass in a pectin matrix increased the tensile yield of the film and reduced the elongation at break. Moreover, a positive effect on water vapor permeability of the film was also observed.These results indicate the ability of the filamentous fungi to convert resources wasted by the food industry into new products with positive impacts on the economy and the environment.
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| 20. |
- Van Alstine, JM, et al.
(författare)
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Poly(ethylene glycol) amphiphiles: Surface behavior of biotechnical significance
- 1997
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Ingår i: Langmuir. - 0743-7463 .- 1520-5827. ; 13, s. 4044-4053
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Tidskriftsartikel (refereegranskat)abstract
- The interfacial behavior of surface localized, poly(ethylene glycol) (1PEG) esterified fatty acid amphiphiles was comparatively studied at microparticle surfaces via phase partition, and at flat surfaces via in situ null ellipsometry. Ellipsometry was performed on methylsilane (MeSi), phosphatidic acid (PA) and phosphatidylcholine (PC) coated silica slides, while human erythrocyte and PC liposomes were subjected to partition in aqueous PEG, dextran two-phase systems. Analogous results from both methods suggest that PEG-amphiphile adsorption can be relatively independent of the underlying surface. Ellipsometry indicated that members of a series of PEG-fatty acid esters of type Ci:j-EO151 (16≤i≤18, 0≤j≤2) adsorb similarly at MeSi-, PC-, and PA-coated surfaces, reaching a plateau (≈0.1 PEG chains * nm-2) independent of micelle formation. When normalized for acyl tail hydrophobicity, PEG-amphiphile adsorption is relatively non-cooperative and independent of acyl tail; saturation being largely determined by repulsive PEG inter-chain interactions. At saturation EO151-ester layers were 10-15 nm thick, suggesting close packed PEG molecules unfolded normal to the target surface. Ellipsometry also indicated the average PEG concentration in the layer was ≈0.07 g * cm-3, and greater than in the PEG-enriched phase of >many two-phase systems. This suggests the partition of PEG-coated colloids reflects interfacial free energy differences between solution- and surface-localized, polymer-enriched phases. PEG-ester adsorption (mg * m-2) isotherms determined on flat slides via ellipsometry correlate directly with those reflected by the partition of analogous microparticles. These results help explain previous observations that changes in partition induced by surface localized PEG, mirror the effects of such localization on the physiological behavior of bio-active colloids.
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