5 research outputs found

    Förgröning pĂ„ ÅkerslĂ€tts förskola

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    Det finns i dagslĂ€get bĂ„de forskning och allmĂ€nna rĂ„d som beskriver att vegetation spelar en viktig roll i en hĂ€lsosam utemiljö för barn. Det verkar dĂ€remot inte finnas vetenskaplig litteratur som beskriver vilken typ av vegetation eller vilka arter som skulle kunna vara lĂ€mpade för de utmanande förutsĂ€ttningarna pĂ„ förskolegĂ„rdar, ofta med problematik som omfattande slitage och markkompaktering. Den kunskapen Ă€r nĂ„got man efterfrĂ„gar generellt inom branschen och ÅkerslĂ€tts förskolegĂ„rd Ă€r en av mĂ„nga dĂ€r man Ă€r i behov av vegetation som kan hjĂ€lpa till att reglera temperaturer och erbjuda skugga. Syftet i arbetet har varit att med hjĂ€lp av kunskap frĂ„n yrkesverksamma, i form av litteratur och intervju, undersöka vilka vĂ€xter som kan vara bĂ€st lĂ€mpade för förskolegĂ„rdar och sammanfatta dessa i en vĂ€xtlista samt undersöka faktorer som skulle kunna underlĂ€tta vid etablering. Vidare har Ă€ven forskningsbaserade ramverk undersökts i syfte att hitta verktyg att i framtiden anvĂ€nda vid utformning av förskolegĂ„rdar. Ett övergripande gestaltningsförslag till ÅkerslĂ€tts förskola har anvĂ€nts för att exemplifiera delar av resultatet och behandlar frĂ€mst aspekterna skuggning av sĂ€rskilt populĂ€ra platser och kommunikation med verksamheten. Arbetet belyser Ă€ven att lerjordar kan vara i högre grad problematiska gĂ€llande kompaktering. Det Ă€r svĂ„rt att etablera vegetation i förskolemiljö, men det finns Ă„tgĂ€rder som kan underlĂ€tta processen. GĂ€llande vĂ€xtmaterialet bör det först och frĂ€mst vara anpassat för stĂ„ndorten för att kunna klassas som lĂ€mpligt, men att antingen ha sĂ€rskilt starkvĂ€xande egenskaper alternativt ett slitstarkt grenverk kan underlĂ€tta avsevĂ€rt. För sĂ€kerstĂ€lla en optimal vegetation och en hĂ€lsosam utemiljö bör man dock bevara befintlig vegetation vid utformning av nya förskolegĂ„rdar.There are currently both research and general advice that describes how vegetation plays an important role in a healthy outdoor environment for children. On the other hand, there does not seem to be any scientific literature that describes what type of vegetation or which species could be suitable for the challenging conditions on preschool yards, often with problems such as extensive wear and soil compaction. That knowledge is something that is generally demanded in the industry and ÅkerslĂ€tt's preschool yard is one of many in need of vegetation that can help regulate temperatures and offer shade. The purpose of the essay has been to, with knowledge from professionals, in the form of literature and interviews, investigate which plants may be best suited for preschools and summarize these in a plant list and investigate factors that could facilitate establishment. Furthermore, research-based frameworks have also been investigated in order to find tools that can be used in the future when designing preschool yards. An overall design proposal for ÅkerslĂ€tt's preschool has been used to exemplify parts of the results and mainly deals with the aspects of shading particularly popular places and communication with the preschool. The essay also highlights that clay soils can be more problematic in terms of compaction. It is difficult to establish vegetation in a preschool environment, but there are measures that can facilitate the process. Regarding the plant material, it should first and foremost be adapted to the site in order to be classified as suitable, but either having particularly strong-growing properties or durable branches can make it considerably easier. However, in order to ensure optimal vegetation and a healthy outdoor environment, existing vegetation should be preserved when designing new preschools

    Characterization of human embryonic stem cell lines by the International Stem Cell Initiative

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    The International Stem Cell Initiative characterized 59 human embryonic stem cell lines from 17 laboratories worldwide. Despite diverse genotypes and different techniques used for derivation and maintenance, all lines exhibited similar expression patterns for several markers of human embryonic stem cells. They expressed the glycolipid antigens SSEA3 and SSEA4, the keratan sulfate antigens TRA-1-60, TRA-1-81, GCTM2 and GCT343, and the protein antigens CD9, Thy1 (also known as CD90), tissue- nonspecific alkaline phosphatase and class 1 HLA, as well as the strongly developmentally regulated genes NANOG, POU5F1 (formerly known as OCT4), TDGF1, DNMT3B, GABRB3 and GDF3. Nevertheless, the lines were not identical: differences in expression of several lineage markers were evident, and several imprinted genes showed generally similar allele-specific expression patterns, but some gene-dependent variation was observed. Also, some female lines expressed readily detectable levels of XIST whereas others did not. No significant contamination of the lines with mycoplasma, bacteria or cytopathic viruses was detected
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