| 1. |
- Broms, Loove, 1977-, et al.
(author)
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Sensing energy : Forming stories through speculative design artefacts
- 2017
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In: Energy Research & Social Science. - : ELSEVIER SCIENCE BV. - 2214-6296 .- 2214-6326. ; 31, s. 194-204
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Journal article (peer-reviewed)abstract
- The artificial world is part of an on-going negotiation of meaning, manifesting in social practice. From a sustainability perspective it is thus important to critically examine what norms are imprinted into the artificial, as well as to imagine, materialize and suggest artefacts that could afford more sustainable stories and practices to form. The project Sensing Energy is an attempt to explore how design could contribute to a re-imagination of everyday life and society, as well as what imaginaries (artefacts and related stories) could come out of such an endeavour. A critical and speculative design programme comprising the three leitmotifs Natureculture, Microsizing modernity, and Focal things and practices, provided a frame and foundation for a series of design experiments. The resulting artefacts were presented at two different workshops in which participants were asked to form stories that integrated one or more of the design experiments into their everyday life. Based on the material from the workshops we can conclude that the design experiments worked well as parts of or catalysts for new stories of the everyday.
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| 2. |
- George, Zandra, 1985, et al.
(author)
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Improved performance and life time of inverted organic photovoltaics by using polymer interfacial materials
- 2015
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In: Solar Energy Materials and Solar Cells. - : Elsevier BV. - 0927-0248. ; 133, s. 99-104
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Journal article (peer-reviewed)abstract
- A previously published fluorene based interlayer polymer is here compared to three similar polymers where the fluorene monomer has been exchanged with monomers that have been reported to have a higher photo-chemical stability. The polymer interlayers have been studied in terms of their influence on device performance and stability on inverted devices with an active layer of P3HT:PC61BM. By acting as a hole-blocking layer the polymers are able to increase the efficiency of the devices with similar to 50% compared to devices with an ITO cathode. In addition, the polymers also improve the photo-stability of the devices, mainly as an effect of a reduced decrease in open-circuit voltage and fill factor. This indicates that solution processable polymer interlayers could be a way towards both higher efficiency and improved stability of inverted organic solar cells.
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| 3. |
- Johansson, Ellen, et al.
(author)
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Revising the embryonic origin of thyroid C cells in mice and humans
- 2015
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In: Development (Cambridge, England). - : The Company of Biologists. - 1477-9129 .- 0950-1991. ; 142:20, s. 3519-3528
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Journal article (peer-reviewed)abstract
- Current understanding infers a neural crest origin of thyroid C cells, the major source of calcitonin in mammals and ancestors to neuroendocrine thyroid tumors. The concept is primarily based on investigations in quail-chick chimeras involving fate-mapping of neural crest cells to the ultimobranchial glands that regulate Ca(2+) homeostasis in birds, reptiles, amphibians and fishes, but whether mammalian C cell development implicates a homologous ontogenetic trajectory has not been experimentally verified. With lineage tracing we now provide direct evidence that Sox17+ anterior endoderm is the only source of differentiated C cells and their progenitors in mice. In similarity with many gut endoderm derivatives embryonic C cells were found to co-express pioneer factors forkhead box (Fox) a1 and Foxa2 before neuroendocrine differentiation takes place. In the ultimobranchial body epithelium emerging from pharyngeal pouch endoderm in early organogenesis differential Foxa1/Foxa2 expression distinguished two spatially separated pools of C cell precursors with different growth properties. A similar expression pattern was recapitulated in medullary thyroid carcinoma cells in vivo consistent with a growth-promoting role of Foxa1. Contrasting embryonic precursor cells, C cell-derived tumor cells invading the stromal compartment down-regulated Foxa2 foregoing epithelial-mesenchymal transition designated by loss of E-cadherin; both Foxa2 and E-cadherin were re-expressed at metastatic sites. These findings revise mammalian C cell ontogeny, expand the neuroendocrine repertoire of endoderm, and redefine the boundaries of neural crest diversification. The data further underpin distinct functions of Foxa1 and Foxa2 in both embryonic and tumor development.
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| 4. |
- Sulistyawati, Sulistyawati, et al.
(author)
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Dengue Vector Control through Community Empowerment : Lessons Learned from a Community-Based Study in Yogyakarta, Indonesia
- 2019
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In: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 16:6
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Journal article (peer-reviewed)abstract
- Effort to control dengue transmission requires community participation to ensure its sustainability. We carried out a knowledge attitude and practice (KAP) survey of dengue prevention to inform the design of a vector control intervention. A cross-sectional survey was conducted in June⁻August 2014 among 521 households in two villages of Yogyakarta, Indonesia. Demographic characteristics and KAP questions were asked using a self-managed questionnaire. Knowledge, attitudes and practice scores were summarized for the population according to sex, age, occupation and education. The average knowledge score was rather poor-3.7 out of 8-although both attitude and practice scores were good: 25.5 out of 32 and 9.2 out of 11 respectively. The best knowledge within the different groups were found among women, the age group 30⁻44 years, people with a university degree and government employees. Best practice scores were found among retired people and housewives. There were several significant gaps in knowledge with respect to basic dengue symptoms, preventive practices and biting and breeding habits of the Aedes mosquito. In contrast, people's practices were considered good, although many respondents failed to recognize outdoor containers as mosquito breeding sites. Accordingly, we developed a vector control card to support people's container cleaning practices. The card was assessed for eight consecutive weeks in 2015, with pre-post larvae positive houses and containers as primary outcome measures. The use of control cards reached a low engagement of the community. Despite ongoing campaigns aiming to engage the community in dengue prevention, knowledge levels were meagre and adherence to taught routines poor in many societal groups. To increase motivation levels, bottom-up strategies are needed to involve all community members in dengue control, not only those that already comply with best practices.
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