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Träfflista för sökning "WFRF:(Reddy A) srt2:(2000-2004)"

Sökning: WFRF:(Reddy A) > (2000-2004)

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1.
  • Neusser, A, et al. (författare)
  • Superdeformed band at very high spin in Nd-140
  • 2004
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 70:6
  • Tidskriftsartikel (refereegranskat)abstract
    • A new high-spin superdeformed band has been discovered in Nd-140(60)80. It was populated in the Zr-96(Ca-48,4n) reaction and investigated using the EUROBALL gamma-ray spectrometer array. The band is observed in the approximate spin range of I=36 to 66. It is associated with shell gaps around Z=60 and at N=80 at large deformation. These gaps produce a pronounced minimum in the calculated total Routhian surfaces at a quadrupole deformation of epsilon(2)=0.45. The new band which lies between the high-deformation bands in the Aapproximate to130 region and the superdeformed bands in Aapproximate to150 nuclei provides insight into the development of the deformation between these two regions. Two possible configurations are suggested involving four neutrons of i(13/2) origin (nu6(4)) and either six protons of h(11/2)/h(9/2) origin (pi5(6)) or five protons of h(11/2)/h(9/2) and one of i(13/2) origin (pi5(5)6(1)).
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2.
  • Thomsson, Kristina A, 1969, et al. (författare)
  • The salivary mucin MG1 (MUC5B) carries a repertoire of unique oligosaccharides that is large and diverse.
  • 2002
  • Ingår i: Glycobiology. - 0959-6658 .- 1460-2423. ; 12:1, s. 1-14
  • Tidskriftsartikel (refereegranskat)abstract
    • The high-molecular-mass salivary mucin MG1, one of two major mucins produced by human salivary glands, plays an important role in oral health by coating the tooth surface and by acting as a bacterial receptor. Here this mucin was purified from the submandibular/sublingual saliva of a blood group O individual. The presence of MUC5B as the major mucin in this preparation was confirmed by amino acid analysis and its reactivity with the monoclonal antibody PAN H2. To structurally characterize MG1 carbohydrates the O-glycans were released by reductive beta-elimination. Nuclear magnetic resonance spectroscopy of the nonfractionated mixture showed that (1) fucose was present in blood group H, Le(a), Le(x), Le(b), and Le(y) epitopes; (2) NeuAc was mainly linked alpha 2-3 to Gal or alpha 2-6 to GalNAcol; and (3) the major internal structures were core 1 and core 2 sequences. After this preliminary analysis the released oligosaccharides were separated into neutral (56%), sialylated (26%), and sulfated (19%) fractions, with an average length of 13, 17, and 41 sugar residues, respectively. Gas chromatography-mass spectrometry and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry of mixtures of neutral and sialylated oligosaccharides revealed at least 62 neutral and 25 sialylated oligosaccharides consisting of up to 20 monosaccharide residues. These results showed that the MG1-derived oligosaccharides were much longer than those of MG2, and only a few species were found on both molecules. Thus, these two mucins create an enormous repertoire of potential binding sites for microorganisms at one of the major portals where infectious organisms enter the body.
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