Sökning: "4C"

Visar resultat 11 - 15 av 23 avhandlingar innehållade ordet 4C.

1. 11. Regulation of chromatin transitions in the 3D architecture of the nucleus

   Författare :Honglei Zhao; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The thesis explores the dynamic features and functions of chromatin crosstalk in the 3D nucleus space, with a focus on the regulation of chromatin transitions. In Paper I we employed the circular chromosome conformation capture assay (4C) and Chromatin in situ Proximity (ChrISP) technique to uncover an inter-chromosomal chromatin fiber interactome comprising both transcriptionally active circadian genes and repressed lamina-associated domains (LADs). LÄS MER

3. 12. Organic geochemical investigation of sources, transport and fate of terrestrial organic matter in the southeast Laptev Sea

   Författare :Emma Karlsson; Örjan Gustafsson; Volker Brüchert; Sebastian Sobek; Rienk Smittenberg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biogeochemistry; biogeokemi; Marine Geoscience; marin geovetenskap; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Permafrost carbon stores have been suggested to react to warming trends with increased terrestrial loading to its coastal waters. Presently, the warming has been seen to be especially high in the East Siberian Arctic and the fate of the major release of terrestrial matter to these coasts is yet to be detailed. LÄS MER

4. 13. The Control of the Epigenome

   Författare :Magda Lezcano; Rolf Ohlsson; Matthias Merkenschlager; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Epigenetics; chromosome interactions; replication timing; histone modifications; epigenetic surveillance; Biologi; Biology; Biologi;

   Sammanfattning : The genetic information required for the existence of a living cell of any kind is encoded in the sequence information scripted in the double helix DNA. A modern trend in biology struggles to come to grip with the amazing fact that there are so many different cell types in our body and that they are directed from the same genomic blueprint. LÄS MER

5. 14. Modification of flavonoid content and photosynthesis by ultraviolet-B radiation. Atrazine-tolerant and -sensitive ultivars of Brassica napus

   Författare :Louise Olsson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; recovery; quercetin; photosynthesis; photoinhibition; photoacoustics; leaf anatomy; kaempferol; flavonoid; D1 protein; fluorescence; cold stress; carbon dioxide; atrazine tolerance; Brassica napus; UV-B; Physiological biophysics; Växtfysiologi;

   Sammanfattning : Levels of ultraviolet-B (UV-B, 280-320 nm) radiation reaching the Earth´s surface increase due to stratospheric ozone depletion. In this thesis the effect of enhanced UV-B radiation was studied on the atrazine-tolerant mutant Stallion, susceptible to photoinhibition, and the atrazine-sensitive cultivar Paroll of Brassica napus (oilseed rape). LÄS MER

7. 15. Rapid solidification behaviour of Fe and Al based alloys

   Författare :Sathees Ranganathan; Hasse Fredriksson; Zhongyun Fan; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rapid solidification; Melt spinning; Metastable phases; Fe based alloys.; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

   Sammanfattning : Rapid solidification experiment on Fe-Cr-Mo-Mn-Si-C alloy was performed to investigate metastable phases formed during the solidification. A wide range of cooling rate was used to analyse the sample from melt spinning technique (~107 K/s) to water quenching method (~102 K/s). LÄS MER