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

Search: WFRF:(Yang Yang) > (2000-2004)

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  • Hillier, Ladeana W, et al. (author)
  • Sequence and comparative analysis of the chicken genome provide unique perspectives on vertebrate evolution
  • 2004
  • In: Nature. - 0028-0836 .- 1476-4687. ; 432:7018, s. 695-716
  • Journal article (peer-reviewed)abstract
    • We present here a draft genome sequence of the red jungle fowl, Gallus gallus. Because the chicken is a modern descendant of the dinosaurs and the first non-mammalian amniote to have its genome sequenced, the draft sequence of its genome--composed of approximately one billion base pairs of sequence and an estimated 20,000-23,000 genes--provides a new perspective on vertebrate genome evolution, while also improving the annotation of mammalian genomes. For example, the evolutionary distance between chicken and human provides high specificity in detecting functional elements, both non-coding and coding. Notably, many conserved non-coding sequences are far from genes and cannot be assigned to defined functional classes. In coding regions the evolutionary dynamics of protein domains and orthologous groups illustrate processes that distinguish the lineages leading to birds and mammals. The distinctive properties of avian microchromosomes, together with the inferred patterns of conserved synteny, provide additional insights into vertebrate chromosome architecture.
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  • Liu, Bingbing, et al. (author)
  • Synthesis and characterization of single-walled nanotubes produced with Ce as catalyst
  • 2000
  • In: Molecular Materials: Molecular Crystals and Liquid Crystals Section C, vol. 13. - : Overseas Publishers Association N.V.. ; , s. 75-80
  • Conference paper (peer-reviewed)abstract
    • We have studied the effect of using rare-earth elements C (typically +4 oxide state) and Eu (typically +2 oxide state) together with nanometer Ni as catalysts to synthesize SWNT in high yield by arc evaporation. A black collar deposit containing mainly SWNT was formed in the presence of Ce/Ni while only nanometer carbon particles were formed using Eu/Ni, as identified by SEM, TEM and Raman spectra. The Raman spectra of our SWNT mats show difference from spectra shown in the literature in a low frequency range, indicating that our mats contain chiral tubes. The temperature dependent resistance of SWNT mats was also measured. A semiconducting behaviour was observed with a negative dR/dT and no resistance minimum from 2 to 350 K. The resistance follows a 2D variable range hopping behaviour.
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  • Liu, Bingbing, et al. (author)
  • Synthesis and characterization of single-walled nanotubes produced with Ce/Ni as catalysts.
  • 2000
  • In: Chemical Physics Letters. - : Elsevier B.V.. - 0009-2614 .- 1873-4448. ; 320:3-4, s. 365-372
  • Journal article (peer-reviewed)abstract
    • SWNTs were synthesized in high yield in the presence of Ce/Ni as catalyst. Raman and SEM results show that a fraction of the tubes are chiral and have small diameters (the smallest one is 0.79 nm), indicating that Ce plays an important role in the formation. Acid treatment is effective in eliminating impurities but changes the morphology and the electric resistance of mats with increasing treatment time. The resistance of as-grown and short time acid-treated mats follow a 2D VRH behaviour while mats treated for a long time follow a 3D model. The results indicate that hopping conduction occurs on bundles or on tubes and that there are intrinsic links between tubes in as-grown mats.
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  • Result 1-10 of 308
Type of publication
journal article (226)
conference paper (54)
doctoral thesis (14)
book chapter (7)
licentiate thesis (5)
reports (2)
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Type of content
peer-reviewed (265)
other academic/artistic (42)
pop. science, debate, etc. (1)
Author/Editor
Yang, Y. (25)
Yang, H. (18)
Mao, Y. (9)
Garpman, Sten (8)
Gustafsson, Hans-Åke (8)
Nystrand, Joakim (8)
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Oskarsson, Anders (8)
Otterlund, Ingvar (8)
Silvermyr, David (8)
Stenlund, Evert (8)
Tydesjö, Henrik (8)
Jia, J. (8)
Liu, Y. (8)
Milov, A. (8)
Nakamura, T. (8)
Tojo, J. (8)
Lebedev, A. (8)
Bathe, S. (8)
Kim, HJ (8)
Aphecetche, L. (8)
Averbeck, R. (8)
Baldisseri, A. (8)
Berdnikov, Y. (8)
Borel, H. (8)
Buesching, H. (8)
Chujo, T. (8)
Constantin, P. (8)
Delagrange, H. (8)
Enokizono, A. (8)
Glenn, A. (8)
Hamagaki, H. (8)
Klein-Boesing, C. (8)
Kwon, Y. (8)
Miake, Y. (8)
Newby, J. (8)
Oyama, K. (8)
Peitzmann, T. (8)
Reygers, K. (8)
Rosnet, P. (8)
Santo, R. (8)
Schutz, Y. (8)
Shigaki, K. (8)
Staley, F. (8)
Sugitate, T. (8)
Torii, H. (8)
Zhou, S. (8)
Esumi, S. (8)
Sakai, S. (8)
Bucher, D. (8)
Gosset, J. (8)
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University
Karolinska Institutet (96)
Lund University (43)
Uppsala University (39)
Chalmers University of Technology (38)
Royal Institute of Technology (33)
Linköping University (33)
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University of Gothenburg (14)
Umeå University (12)
Stockholm University (6)
Luleå University of Technology (5)
RISE (3)
Örebro University (2)
Marie Cederschiöld högskola (2)
Södertörn University (1)
University of Skövde (1)
University of Borås (1)
Högskolan Dalarna (1)
Swedish Museum of Natural History (1)
Blekinge Institute of Technology (1)
VTI - The Swedish National Road and Transport Research Institute (1)
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Language
English (304)
Chinese (4)
Research subject (UKÄ/SCB)
Engineering and Technology (61)
Natural sciences (52)
Medical and Health Sciences (36)
Social Sciences (9)
Humanities (1)

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