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Träfflista för sökning "WFRF:(JENSEN G) srt2:(1995-1999)"

Search: WFRF:(JENSEN G) > (1995-1999)

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  • Anne, R., et al. (author)
  • Projectile Coulomb-Excitation with Fast Radioactive Beams
  • 1995
  • In: Zeitschrift fur Physik A Hadrons and Nuclei. - 1431-5831 .- 0939-7922. ; 352:4, s. 397-401
  • Journal article (peer-reviewed)abstract
    • We report a search for gamma rays emanating from Coulomb excitation of fast (30-46 MeV/u) radioactive projectiles He-8, Be-11,Be-12,Be-14 interacting with a lead target. These are clearly identified by their Doppler shift. The 320 keV 1/2(-) --> 1/2(+)gamma transition from Be-11 was observed with a cross-section of 191 +/- 26 mb which is noticeably less than expected from the known lifetime and in the perturbation limit of pure Coulomb excitation. In the other nuclei rather stringent upper limits of 0.01 to 0.2 Weisskopf units, are placed on the hypothetical transition to 1(-) states.
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  • Haaima, G., et al. (author)
  • Peptide nucleic acids (PNA) derived from N-(N-methylaminoethyl)glycine. Synthesis, hybridization and structural properties
  • 1999
  • In: New Journal of Chemistry. - 1369-9261 .- 1144-0546. ; 23:8, s. 833-840
  • Journal article (peer-reviewed)abstract
    • Backbone N-methylated peptide nucleic acids (PNAs) containing the four nucleobases adenine, cytosine, guanine and thymine were synthesized via solid phase peptide oligomerization. The oligomers bind to their complementary target with a thermal stability that is 1.5-4.5 degrees C lower per "N-methyl nucleobase unit" [dependent on the number and position(s) of the N-methyl] than that of unmodified PNA. However, even fully N-methyl modified PNAs bind as efficiently to DNA or RNA targets as DNA itself. Furthermore, the hybridization efficiency per N-methyl unit in a PNA decreased with increasing N-methyl content, and the effect was more pronounced when the N-methyl backbone units are present in the Hoogsteen versus the Watson-Crick strand in (PNA)(2)-DNA triplexes. Interestingly, CD spectral analyses indicate that 30% (3 out of ten) substitution with N-methyl nucleobases did not alter the structure of PNA-DNA (or RNA) duplexes or (PNA)(2)-DNA triplexes, and likewise CD spectroscopy and X-ray crystallography showed no major structural differences between N-methylated (30%) and unmodified PNA-PNA duplexes. However, PNA-DNA duplexes as well as triplexes adopted a different conformation when formed with all-Ai-methyl PNAs.
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  • Result 1-10 of 25
Type of publication
journal article (21)
book chapter (2)
reports (1)
other publication (1)
Type of content
peer-reviewed (21)
other academic/artistic (3)
pop. science, debate, etc. (1)
Author/Editor
Jensen, G (5)
Olsson, C (3)
Nielsen, T. (3)
Holm, T (2)
Ferlini, A. (2)
Bentwich, Z (2)
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Phillips, A. (2)
Clotet, B (2)
Clumeck, N (2)
Gatell, J (2)
Antunes, F (2)
Danner, S (2)
Hirschel, B (2)
Katlama, C (2)
Pinching, A (2)
Vella, S (2)
Barton, S (2)
Nilsson, H (2)
Mulcahy, F (2)
Boman, K. (2)
Svensson, O (2)
Ahlberg, G (2)
Leoni, S. (2)
Herskind, B (2)
PEDERSEN, C (2)
LUNDGREN, JD (2)
GERSTOFT, J (2)
Pehrson, P (2)
Melbye, M (2)
Yust, I (2)
Lazzarin, A (2)
Hemmer, R (2)
Miro, J (2)
Johnson, A (2)
Giannelli, F. (2)
Ingebretsen, F (2)
Young, Simon (2)
Ranki, A. (2)
Jensen, B (2)
Ejdebäck, Mikael, 19 ... (2)
Thygesen, K (2)
Nicol, P (2)
Wilhelmsen, L (2)
Skinhoj, P. (2)
Lilja, M (2)
Ledergerber, B (2)
Lehto, S. (2)
Linde, B (2)
Goebel, FD (2)
Dietrich, M. (2)
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University
Karolinska Institutet (11)
Chalmers University of Technology (4)
Uppsala University (3)
Lund University (2)
University of Skövde (2)
University of Gothenburg (1)
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Umeå University (1)
Stockholm University (1)
University of Gävle (1)
Jönköping University (1)
RISE (1)
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Language
English (24)
Swedish (1)
Research subject (UKÄ/SCB)
Natural sciences (7)
Agricultural Sciences (2)
Social Sciences (2)
Engineering and Technology (1)
Medical and Health Sciences (1)

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