5 research outputs found
Förgröning pÄ à kerslÀtts förskola
Det finns i dagslÀget bÄde forskning och allmÀnna rÄd som beskriver att vegetation spelar en viktig
roll i en hÀlsosam utemiljö för barn. Det verkar dÀremot inte finnas vetenskaplig litteratur som
beskriver vilken typ av vegetation eller vilka arter som skulle kunna vara lÀmpade för de utmanande
förutsÀttningarna pÄ förskolegÄrdar, ofta med problematik som omfattande slitage och
markkompaktering. Den kunskapen Àr nÄgot man efterfrÄgar generellt inom branschen och
Ă
kerslÀtts förskolegÄrd Àr en av mÄnga dÀr man Àr i behov av vegetation som kan hjÀlpa till att
reglera temperaturer och erbjuda skugga. Syftet i arbetet har varit att med hjÀlp av kunskap frÄn
yrkesverksamma, i form av litteratur och intervju, undersöka vilka vÀxter som kan vara bÀst lÀmpade
för förskolegÄrdar och sammanfatta dessa i en vÀxtlista samt undersöka faktorer som skulle kunna
underlÀtta vid etablering. Vidare har Àven forskningsbaserade ramverk undersökts i syfte att hitta
verktyg att i framtiden anvĂ€nda vid utformning av förskolegĂ„rdar. Ett övergripande gestaltningsförslag till Ă
kerslÀtts förskola har anvÀnts för att exemplifiera delar av resultatet och behandlar
frÀmst aspekterna skuggning av sÀrskilt populÀra platser och kommunikation med verksamheten.
Arbetet belyser Àven att lerjordar kan vara i högre grad problematiska gÀllande kompaktering. Det
Àr svÄrt att etablera vegetation i förskolemiljö, men det finns ÄtgÀrder som kan underlÀtta processen.
GÀllande vÀxtmaterialet bör det först och frÀmst vara anpassat för stÄndorten för att kunna klassas
som lÀmpligt, men att antingen ha sÀrskilt starkvÀxande egenskaper alternativt ett slitstarkt grenverk
kan underlÀtta avsevÀrt. För sÀkerstÀlla en optimal vegetation och en hÀlsosam utemiljö bör man
dock bevara befintlig vegetation vid utformning av nya förskolegÄrdar.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 Ă
kerslÀtt'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
Ă
kerslÀtt'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
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