Sökning: "N concentration"

Visar resultat 11 - 15 av 506 avhandlingar innehållade orden N concentration.

1. 11. N-acetylaspartate in brain - studies on efflux and function

   Författare :Mattias Tranberg; Göteborgs universitet; []
   Nyckelord :N-acetylaspartate; Hippocampal slice cultures; HPLC; NMDA; Excitotoxicity; Volume regulation; Canavan disease;

   Sammanfattning : N-acetylaspartate (NAA) is an amino acid derivative present in high concentration in the brain. The function of NAA is still unsettled in spite of 50 years of research. The mainly neuronal synthesis and glial breakdown of NAA requires a well regulated neuronal efflux and glial uptake. LÄS MER

3. 12. Nitrogen, parasites and plants : key interactions in boreal forest ecosystems

   Författare :Joachim Strengbom; Lars Ericson; Gaius R Shaver; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Critical loads; Deschampsia flexuosa; amino acids; mycorrhizal fungi; natural enemies; N deposition; N limitation; vegetational composition; Valdensia heterodoxa; Vaccinium myrtillus;

   Sammanfattning : In the work described in this thesis I studied how increases in nitrogen (N) inputs may affect plant community structure in boreal forest understorey vegetation. These phenomena were investigated in N fertilization experiments and along a national N deposition gradient. LÄS MER

4. 13. Peatland Bryophytes in a Changing Environment : Ecophysiological Traits and Ecosystem Function

   Författare :Gustaf Granath; Håkan Rydin; Joachim Strengbom; Steven K Rice; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; allometric scaling; chlorophyll fluorescence; competition; decomposition; flooding; mire; N concentration; nitrogen deposition; photosynthesis; succession; stoichiometry; Ecological Botany; Ekologisk botanik;

   Sammanfattning : Peatlands are peat forming ecosystems in which not fully decomposed plant material builds up the soil. The sequestration of carbon into peat is mainly associated with the bryophyte genus Sphagnum (peat mosses), which dominate and literally form most peatlands. LÄS MER

5. 14. Office type, performance and well-being : A study of how personality and work tasks interact with contemporary office environments and ways of working

   Författare :Aram Seddigh; Hugo Westerlund; Erik Berntson; Fredrik Jönsson; Eva Vingård; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Office type; open-plan office; flex office; cell office; performance; job satisfaction; distraction; self-rated health; well-being; cognitive stress; exhaustion; individual differences; personality; concentration; stim-ulus screening ability; memory; Kontorstyp; kontorslandskap; flexkontor; cellkontor; produktivitet; arbetstillfredsställelse; distraktion; självskattat hälsa; trivsel; kognitiv stress; utmattning; individuella skillnader; personlighet; koncentration; arbetsminne; Psychology; psykologi;

   Sammanfattning : Today, many organisations are adopting offices that have an open design with or without flexible seating. While advocates of open-plan offices propose that these office types lead to cost savings and aid inter and intra-team communication, opponents argue that these office types are associated with decreased performance and worsened health among employees. LÄS MER

7. 15. Quantitative NanoSIMS provides subcellular concentration and distribution of oligonucleotide therapeutics

   Författare :Cécile Becquart; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NanoSIMS; Antisense Oligonucleotide; Intracellular concentration;

   Sammanfattning : Antisense oligonucleotides (ASOs) represent a powerful therapeutic modality that can selectively modulate gene expression. However, ASOs face two major hurdles that restrict their use in the clinic. The first issue is delivery of the ASO to a tissue of therapeutic interest while reducing exposure to unrelated tissues. LÄS MER