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Träfflista för sökning "WFRF:(Ma Xu) "

Search: WFRF:(Ma Xu)

  • Result 1-10 of 1057
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  • Beal, Jacob, et al. (author)
  • Robust estimation of bacterial cell count from optical density
  • 2020
  • In: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 3:1
  • Journal article (peer-reviewed)abstract
    • Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data.
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  • 2019
  • Journal article (peer-reviewed)
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  • Ablikim, M., et al. (author)
  • Observation of psi(3686) -> eta ' e(+)e(-)
  • 2018
  • In: Physics Letters B. - : ELSEVIER SCIENCE BV. - 0370-2693 .- 1873-2445. ; 783, s. 452-458
  • Journal article (peer-reviewed)abstract
    • Using a data sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector at the BEPCII collider, we report the first observation of the electromagnetic Dalitz decay psi(3686) -> eta'e(+)e(-), with significances of 7.0 sigma and 6.3 sigma when reconstructing the eta' meson via its decay modes eta' -> gamma pi(+)pi(-) and eta' -> pi(+)pi(-) eta (eta -> gamma gamma), respectively. The weighted average branching fraction is determined to be B(psi(3686) -> eta'e(+)e(-)) = (1.90 +/- 0.25 +/- 0.11) x 10(-6), where the first uncertainty is statistical and the second systematic.
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  • Ablikim, M., et al. (author)
  • Search for the rare decays D -> h(h((')))e(+) e(-)
  • 2018
  • In: Physical Review D. - : AMER PHYSICAL SOC. - 2470-0010 .- 2470-0029. ; 97:7
  • Journal article (peer-reviewed)abstract
    • We search for rare decays of D mesons to hadrons accompanied by an electron-positron pair (h(h((')))e(+)e(- )),using an e(+)e(-) collision sample corresponding to an integrated luminosity of 2.93 fb(-1) collected with the BESIII detector at root s = 3.773 GeV. No significant signals are observed, and the corresponding upper limits on the branching fractions at the 90% confidence level are determined. The sensitivities of the results are at the level of 10(-5)-10(-6), providing a large improvement over previous searches.
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  • Result 1-10 of 1057
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Zhemchugov, A. (605)
Jin, S. (602)
Cetin, S. A. (599)
Ouyang, Q. (597)
Cakir, O. (592)
Chen, X. (575)
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Liu, J. B. (565)
Liu, D. (560)
Zhang, J. (555)
Yang, Y. (539)
Berger, N. (524)
Peters, K. (507)
Chen, S. (504)
Bai, Y. (486)
Wang, J. (482)
Werner, M. (477)
Zhou, B. (475)
Liu, Y. (474)
Wang, H. (473)
Yang, H. (473)
Wang, C. (472)
Zhu, H. (472)
Li, H. (471)
Zhang, X. (471)
Lee, S. C. (470)
Ye, J. (470)
Borisov, A. (469)
Kim, S. H. (469)
Zhang, Z. (469)
King, M. (467)
Wilson, A. (467)
Chen, H. (466)
Diglio, S. (466)
Francis, D. (466)
Meyer, J. (466)
Sliwa, K. (466)
Tanaka, S. (466)
Yu, J. (466)
Yuan, L. (466)
Zhu, J. (466)
Ferrer, A. (465)
Kobayashi, T. (465)
Losada, M. (465)
Moore, R. W. (465)
Robson, A. (465)
Vlachos, S. (465)
Vrba, V. (465)
Wu, S. L. (465)
Yamamoto, A. (465)
Yamamoto, S. (465)
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