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Träfflista för sökning "WFRF:(Botelho A) srt2:(2005-2009)"

Sökning: WFRF:(Botelho A) > (2005-2009)

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1.
  • Adcox, K, et al. (författare)
  • Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration
  • 2005
  • Ingår i: Nuclear Physics, Section A. - : Elsevier BV. - 0375-9474. ; 757:1-2, s. 184-283
  • Forskningsöversikt (refereegranskat)abstract
    • Extensive experimental data from high-energy nucleus-nucleus collisions were recorded using the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). The comprehensive set of measurements from the first three years of RHIC operation includes charged particle multiplicities, transverse energy, yield ratios and spectra of identified hadrons in a wide range of transverse momenta (PT), elliptic flow, two-particle correlations, nonstatistical fluctuations, and suppression of particle production at high PT. The results are examined with an emphasis on implications for the formation of a new state of dense matter. We find that the state of matter created at RHIC cannot be described in terms of ordinary color neutral hadrons.
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2.
  • Calado Botelho, Salomé, et al. (författare)
  • The association of Brahma with the Balbiani ring 1 gene of Chironomus tentans studied by immunoelectron microscopy and chromatin immunoprecipitation
  • 2008
  • Ingår i: Insect molecular biology (Print). - : Wiley. - 0962-1075 .- 1365-2583. ; 17:5, s. 505-13
  • Tidskriftsartikel (refereegranskat)abstract
    • Many steps of gene expression take place during transcription, and important functional information can thus be obtained by determining the distribution of specific factors along a transcribed gene. The Balbiani ring (BR) genes of the dipteran Chironomus tentans constitute a unique system for mapping the association of specific factors along a eukaryotic gene using immuno-electron microscopy (immuno-EM). The chromatin immunoprecipitation (ChIP) technique has provided an alternative, more general method for studying the association of proteins with specific genomic sequences. The immuno-EM and the ChIP methods suffer from different limitations, and thus a combination of both is advantageous. We have established optimal conditions for ChIP on chromatin extracted from the salivary glands of C. tentans, and we have analyzed the association of the SWI/SNF chromatin remodelling factor Brahma (Brm) with the BR1 gene by combined immuno-EM and ChIP. We show that Brm is not restricted to the promoter of the BR1 gene but is also associated with sequences in the middle and distal portions of the gene, which suggests that Brm has additional roles apart from regulating transcription initiation.
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