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

  • Result 11-20 of 33
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11.
  • Adler, SS, et al. (author)
  • Scaling properties of proton and antiproton production in root s(NN)=200 GeV Au+Au collisions
  • 2003
  • In: Physical Review Letters. - 1079-7114. ; 91:17: 172301
  • Journal article (peer-reviewed)abstract
    • We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at rootS(NN)=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider. In central collisions at intermediate transverse momenta (1.5
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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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14.
  • Zhou, J., et al. (author)
  • Self-excited piezoelectric microcantilever for gas detection
  • 2003
  • In: Microelectronic Engineering. - 0167-9317 .- 1873-5568. ; 69:1, s. 37-46
  • Journal article (peer-reviewed)abstract
    • Design, fabrication and results from theoretical and experimental studies on the self-excited piezoelectric microcantilever are presented in this paper. Theoretical studies have been carried out to design the microcantilever and have been extended to harmonic analysis using the finite element technique. Silicon microfabrication has been successfully completed to create microcantilever devices. Experimental studies have been performed to obtain the resonance frequencies. Applied as a mass-sensitive sensor, the microcantilever has a sensitivity of - 0.0024%/ppm and a minimum mass loading of 3.5 x 10(-9) g with the help of a zeolite sensitive layer to freon.
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20.
  • da Silva, A. F., et al. (author)
  • Electrical resistivity of acceptor carbon in GaAs
  • 2004
  • In: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 95:5, s. 2532-2535
  • Journal article (peer-reviewed)abstract
    • The electrical resistivity was investigated from room temperature down to 1.7 K for the shallow acceptor carbon in GaAs prepared by ion implantation with impurity concentrations between 10(17) and 10(19) cm(-3). Good agreement was obtained between the measured resistivities and resistivities calculated by a generalized Drude approach at similar temperatures and doping concentrations. The critical impurity concentration for the metal-nonmetal transition was found to be about 10(18) cm(-3).
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  • Result 11-20 of 33

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