There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESIII and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESIII, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESIII during the remaining operation period of BEPCII. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCII to higher luminosity.

The research activities in the development of recyclable and reprocessable covalently crosslinked networks, and the construction of polymers from renewable resources are both stemmed from the economical and environmental problems associated with traditional thermosets. However, there is little effort in combination of these two attractive strategies in material designs. This article reported a bio‐based vitrimer constructed from isosorbide‐derived epoxy and aromatic diamines containing disulfide bonds. The resulted dynamic epoxy resins showed comparable thermomechanical properties as compared to similar epoxy networks cured by traditional curing agent. Rheological tests demonstrated the fast stress relaxation of the dynamic network due to the rapid metathesis of disulfide bonds at temperature higher than glass transition temperature. This feature permitted the recycling and reprocessing of the fragmented samples for several times by hot press. The dynamic epoxy resins also exhibited shape‐memory effect, and it is demonstrated that the shape recovery ratio could be readily adjusted by controlling the stress relaxation in the temporary state at programming temperature. Moreover, the degradability of the dynamic epoxy resins in alkaline aqueous solution was also demonstrated. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1790–1799

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Polydopamine particles were used as fillers for constructing multifunctional composites for the first time.

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The Born cross section for the process e þ e − → pp is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets corresponding to an integrated luminosity of 7.5 fb −1 , collected with the BESIII detector at the BEPCII collider at center of mass energies between 3.773 and 4.600 GeV. The Born cross section for the process e þ e − → pp and the proton effective form factor are determined in the pp invariant mass range between 2.0 and 3.8 GeV=c 2 divided into 30 intervals. The proton form factor ratio (jG E j=jG M j) is measured in 3 intervals of the pp invariant mass between 2.0 and 3.0 GeV=c 2 .

In this paper, we reported on the electrocatalytic activities for methanol oxidation of Pt0.495Ru0.505/C, Pt0.526Sn0.474/C, Pt0.467Ru0.495Sn0.038/C, Pt0.472Ru0.413Sn0.115/C, Pt0.504Ru0.354Sn0.142/C, Pt0.537Ru0.243Sn0.22/C, and Pt0.487Ru0.152Sn0.361/C catalysts. The carbon-supported alloy catalysts were prepared by a modified electroless deposition method. The electrocatalytic activities for methanol oxidation were investigated by using cyclic voltammetry, chronoamperometry, slow linear sweep measurements, and Tafel steady-state plots. The results indicate that the Pt0.472Ru0.413Sn0.115/C catalyst exhibits superior electrochemical performance for methanol oxidation. Tafel plots demonstrate that the addition of Sn into the binary Pt−Ru system could accelerate the rate-determining reactions (RDS) of methanol oxidation rather than alter the RDS step. The apparent activation energies for methanol oxidation of the binary and ternary catalysts were determined by Tafel plots at different temperatures, showing that Pt0.472Ru0.413Sn0.115/C can significantly lower the activation energy in comparison with that of Pt−Ru/C and Pt−Sn/C. The present results confirm the synergy effect of Ru and Sn in the electrocatalysts and meanwhile suggest the applicability of Pt0.472Ru0.413Sn0.115/C for methanol oxidation with reduced catalyst price and enhanced catalytic activity.

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